Commit Graph

951025 Commits

Author SHA1 Message Date
Linus Torvalds 549738f15d Linux 5.9-rc8 2020-10-04 16:04:34 -07:00
Linus Torvalds 22fbc037cd Two bugfix patches.
-----BEGIN PGP SIGNATURE-----
 
 iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAl94P3QUHHBib256aW5p
 QHJlZGhhdC5jb20ACgkQv/vSX3jHroP7+AgAm4NqCkxr4SqfYX3WHCiJP5Go9wQY
 9P5SP9YZFfDY/lqPuFMhUv2u/IumO0ErgSzrdmGIqSfjY9/Qf8Y4csc22/XZzvD+
 t8Jxmst51td9sO8vDC2u7Qnb1/Kbfk8rg9DXEre2Gw6EaO8EtGGyOMXtPUmGFEDS
 AKk+k081Mebs3rao8oy8MMDq0/AddE2afi4Cgi0yRkeMqxVOxaEe1gsBbZpOKrXO
 0n1RwaAEsZlZaDIUdu8pmwh/KMNJwhn3qvyG4XgfJsIWQSphB5y5EMhCnnoI/SMb
 auK4XSUDP8Y+ZwDRKxuIxBgBY4xix0aFKdZVSoPGdapVL/o8daYjaRt4ig==
 =4KCW
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Two bugfixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept
  KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest
2020-10-03 12:19:23 -07:00
Linus Torvalds 5ee56135b2 xen: branch for v5.9-rc8
-----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCX3goZAAKCRCAXGG7T9hj
 viTvAP9RdCXpqUtMMkOn+EjEuPSassK+o5ErF1XSEUTTXht5mwEAzk01afa5i/vH
 7cI2qzy9PuKvuFWmS1guxFnlwZtncgw=
 =vnRB
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-5.9b-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "Fix a regression introduced in 5.9-rc3 which caused a system running
  as fully virtualized guest under Xen to crash when using legacy
  devices like a floppy"

* tag 'for-linus-5.9b-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: don't use chip_data for legacy IRQs
2020-10-03 11:57:39 -07:00
Linus Torvalds 5f05663851 USB/PHY fixes for 5.9-rc8
Here are some small USB and PHY driver fixes for 5.9-rc8
 
 The PHY driver fix resolves an issue found by Dan Carpenter for a memory
 leak.
 
 The USB fixes fall into two groups:
 	- usb gadget fix from Bryan that is a fix for a previous
 	  security fix that showed up in in-the-wild testing
 	- usb core driver matching bugfixes.  This fixes a bug that has
 	  plagued the both the usbip driver and syzbot testing tools
 	  this -rc release cycle.  All is now working properly so usbip
 	  connections will work, and syzbot can get back to fuzzing USB
 	  drivers properly.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCX3iJwg8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymhTACfYc818o/wXpEwc6pr3ABAdDy2U1UAnRb0PwZf
 FJeW+3sSUbM8wzn+SAc7
 =/rl/
 -----END PGP SIGNATURE-----

Merge tag 'usb-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY fixes from Greg KH:
 "Here are some small USB and PHY driver fixes for 5.9-rc8

  The PHY driver fix resolves an issue found by Dan Carpenter for a
  memory leak.

  The USB fixes fall into two groups:

   - usb gadget fix from Bryan that is a fix for a previous security fix
     that showed up in in-the-wild testing

   - usb core driver matching bugfixes. This fixes a bug that has
     plagued the both the usbip driver and syzbot testing tools this -rc
     release cycle. All is now working properly so usbip connections
     will work, and syzbot can get back to fuzzing USB drivers properly.

  All have been in linux-next for a while with no reported issues"

* tag 'usb-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usbcore/driver: Accommodate usbip
  usbcore/driver: Fix incorrect downcast
  usbcore/driver: Fix specific driver selection
  Revert "usbip: Implement a match function to fix usbip"
  USB: gadget: f_ncm: Fix NDP16 datagram validation
  phy: ti: am654: Fix a leak in serdes_am654_probe()
2020-10-03 11:47:35 -07:00
Linus Torvalds f35c08e0bb Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "Some more driver fixes for i2c"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: npcm7xx: Clear LAST bit after a failed transaction.
  i2c: cpm: Fix i2c_ram structure
  i2c: i801: Exclude device from suspend direct complete optimization
2020-10-03 11:40:22 -07:00
Linus Torvalds 72af7b411d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
 "A couple more driver quirks, now enabling newer trackpoints from
  Synaptics for real"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add nopnp quirk for Acer Aspire 5 A515
  Input: trackpoint - enable Synaptics trackpoints
2020-10-03 11:37:23 -07:00
Eric Biggers d43ca1386b scripts/spelling.txt: fix malformed entry
One of the entries has three fields "mistake||correction||correction"
rather than the expected two fields "mistake||correction".  Fix it.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200930234359.255295-1-ebiggers@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-03 11:28:12 -07:00
Joonsoo Kim 1d91df85f3 mm/page_alloc: handle a missing case for memalloc_nocma_{save/restore} APIs
memalloc_nocma_{save/restore} APIs can be used to skip page allocation
on CMA area, but, there is a missing case and the page on CMA area could
be allocated even if APIs are used.  This patch handles this case to fix
the potential issue.

For now, these APIs are used to prevent long-term pinning on the CMA
page.  When the long-term pinning is requested on the CMA page, it is
migrated to the non-CMA page before pinning.  This non-CMA page is
allocated by using memalloc_nocma_{save/restore} APIs.  If APIs doesn't
work as intended, the CMA page is allocated and it is pinned for a long
time.  This long-term pin for the CMA page causes cma_alloc() failure
and it could result in wrong behaviour on the device driver who uses the
cma_alloc().

Missing case is an allocation from the pcplist.  MIGRATE_MOVABLE pcplist
could have the pages on CMA area so we need to skip it if ALLOC_CMA
isn't specified.

Fixes: 8510e69c8e (mm/page_alloc: fix memalloc_nocma_{save/restore} APIs)
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Link: https://lkml.kernel.org/r/1601429472-12599-1-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-03 11:28:12 -07:00
Eric Farman 484cfaca95 mm, slub: restore initial kmem_cache flags
The routine that applies debug flags to the kmem_cache slabs
inadvertantly prevents non-debug flags from being applied to those
same objects.  That is, if slub_debug=<flag>,<slab> is specified,
non-debugged slabs will end up having flags of zero, and the slabs
may be unusable.

Fix this by including the input flags for non-matching slabs with the
contents of slub_debug, so that the caches are created as expected
alongside any debugging options that may be requested.  With this, we
can remove the check for a NULL slub_debug_string, since it's covered
by the loop itself.

Fixes: e17f1dfba3 ("mm, slub: extend slub_debug syntax for multiple blocks")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kees Cook <keescook@chromium.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lkml.kernel.org/r/20200930161931.28575-1-farman@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-03 11:28:12 -07:00
Paolo Bonzini e2e1a1c86b KVM/arm64 fixes for 5.9, take #3
- Fix synchronization of VTTBR update on TLB invalidation for nVHE systems
 -----BEGIN PGP SIGNATURE-----
 
 iQJDBAABCgAtFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAl91qtQPHG1hekBrZXJu
 ZWwub3JnAAoJECPQ0LrRPXpD2eoQAKEpLbbWycXVKikz+O1yev8EELmWMpvV/7uM
 Q+4+FjO2swcb5FEPBw6hicZKXIFRi7AP3xFp6hKuWyLfdnYST+WOf5KCI1DcDdG+
 /+5bpiS9F1Z+K9Inm6XwpXCnWFuo1P8i1T65mT5HKIm/9+zRwFY5X8svXXvnP4h1
 OVgDSI+8jn14yf9aMnvznmvAiSN9GXiVt4v3h9W/1B5FWw3sUT1bTdFIwjh4q7M5
 Q32fLeWYdLqTnFOaYtLJNRElE9JSUFkwNpSg1nqoFUH+8gK5oBEEnhzdPzJ9figz
 tXrMKlWylswX3ySHSe1L2m9hekwwF3p/h3r4QlpbR2feI8jhOG9mG1YNvPSCdgKh
 xWDXWLUnymw4EZGyREeFdMe26gg4xVKqNnVB7Na3PFOSQklg6oqdcUyQccgyWd/6
 i8ePA+djVFA/C+iVanv/xphAalT0DmNEe3isBSxkt0RZcrLoCDBoOsTRTRQv8d+y
 xBwl3k/DAfGtYjJwntxUNjuQUOzn9E3cc/L/z4Y0ON+sYGzDbv9cPU2oMNyrqFTj
 /AZVumCxz3gjjBah62iu7m0hkXIrh7H86ua/dAn/CC0dtAAcANQn+2373C02IPN9
 ntCEjc+8aMdw4yph31Ngxd/IT6CQxCOpVJd++kzP5BpLvysUsUGy1M/3Hsd1c88v
 hKWU5aS4
 =YFeP
 -----END PGP SIGNATURE-----

Merge tag 'kvmarm-fixes-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master

KVM/arm64 fixes for 5.9, take #3

- Fix synchronization of VTTBR update on TLB invalidation for nVHE systems
2020-10-03 05:07:59 -04:00
Paolo Bonzini b502e6ecdc KVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept
The PFEC_MASK and PFEC_MATCH fields in the VMCS reverse the meaning of
the #PF intercept bit in the exception bitmap when they do not match.
This means that, if PFEC_MASK and/or PFEC_MATCH are set, the
hypervisor can get a vmexit for #PF exceptions even when the
corresponding bit is clear in the exception bitmap.

This is unexpected and is promptly detected by a WARN_ON_ONCE.
To fix it, reset PFEC_MASK and PFEC_MATCH when the #PF intercept
is disabled (as is common with enable_ept && !allow_smaller_maxphyaddr).

Reported-by: Qian Cai <cai@redhat.com>>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-03 05:07:40 -04:00
Linus Torvalds d3d45f8220 Pin control fixes for the v5.9 kernel:
- Fix a mux problem for I2C in the MVEBU driver.
 
 - Fix a really hairy inversion problem in the Intel Cherryview
   driver.
 
 - Fix the register for the sdc2_clk in the Qualcomm SM8250
   driver.
 
 - Check the virtual GPIO boot failur in the Mediatek driver.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEElDRnuGcz/wPCXQWMQRCzN7AZXXMFAl93nTMACgkQQRCzN7AZ
 XXPe8g//VBK5yWSV/2bJam6/VrGFinlueBrlfH4O29frvjVpnd8xbBlLRApGsKOG
 bXgPlFXgI6X3V4yF94YHWNvG76/RPZTZ2CXULfQCpO+kG2TO+xfbNuskK+UAiyy8
 nZ7EThjV+DsZ/hA7BA56rJetgLo0QeIUTLrMS/YLxQW4czhr26Aq5vE7sehypBOW
 9CwU1ngDXVpUuCgT8ibbKoKDrO3UZm9hn6wcygV920TBOfndtDSmsFcs1H0B9L7o
 Iq6S0L5F5ouTrd4emHSbwyH0MKMFOeee++QDXu1ZeXnEByXCXwqrrIkiZOFmI3ft
 RuNpskRAOZFGQtZPDnyL/EIfegZJQ10cFReRXbBH+wzqycc2oe3/9O1PR0zt9oTR
 GU3Dqk93goAyqFG0dek5Et4BZbCQPdYdFWYSpldkoFGclrgKMA+burdwpcsfRoxw
 BwzgQEDRtrUZjnpEsoXfucPqB9ao1bLv8UjhVn2RjzjLO8tfpg4sJapiJPZRvGw1
 eluTxfLaO+SW24fRRVsa3WzW/1sGbmz+p5J3/nisVDAGsy9cEzPiupuWt80BBwYh
 xlWO018FZlOWLuj/tC3uZghlXmphSvBexsZuiK0/uX3Nin99elUqpOTNNVB4pIqM
 eX+3IJc5fvKaDM4pJlsNZc3VOnZjQTAIwa/6FFt6I3fc5jakDGQ=
 =rZhj
 -----END PGP SIGNATURE-----

Merge tag 'pinctrl-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Some pin control fixes here. All of them are driver fixes, the Intel
  Cherryview being the most interesting one.

   - Fix a mux problem for I2C in the MVEBU driver.

   - Fix a really hairy inversion problem in the Intel Cherryview
     driver.

   - Fix the register for the sdc2_clk in the Qualcomm SM8250 driver.

   - Check the virtual GPIO boot failur in the Mediatek driver"

* tag 'pinctrl-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: mediatek: check mtk_is_virt_gpio input parameter
  pinctrl: qcom: sm8250: correct sdc2_clk
  pinctrl: cherryview: Preserve CHV_PADCTRL1_INVRXTX_TXDATA flag on GPIOs
  pinctrl: mvebu: Fix i2c sda definition for 98DX3236
2020-10-02 14:51:34 -07:00
Linus Torvalds 4d9c3a688a pci-v5.9-fixes-2
-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAl93fEMUHGJoZWxnYWFz
 QGdvb2dsZS5jb20ACgkQWYigwDrT+vyuQw/9HLM3l2pDB+sFBBEu7V7qZRKVaesh
 t1+B2Y8TE+Fklav1Nmh75ctMZPsAiOs+A5fhJjcqEjQkWnptorQvJ9LbjGIW/J++
 STzFUMCsK03zug1b20/2Zd+iL6vAd4nS8kQEGybwO0hNPRllYiqPJe0CdFS/A+PI
 uwGKU9wdPJqSnnourbyY2XM1zplrI42l02O6YBwmDgvgbK0I397AWFJxENNfCNFA
 C8HaMN0qGbnYv/UhFwb5An1VpRZ0zL4wnwr24mRAlHLN+eLoUZwQ0JfmAbqJSsfH
 6ynFLYGCkBLIDhlJkvHxiROxfzc7XT59pTL82pPqm3+dtAVsG09zWizAQRXKESi3
 MkU8ohlHE50J2JNvGepuEsop5DGtIaW3yO7vxKujp1/LC67HX9Jdaf2Ojd2euy45
 njVer28Rhjc4OkkElhDQ4TfOalVE+5TwsjXlmJgM7MmvHIuyXQzSYYDhEmJ/pUlx
 ecn+OHNdOmCmlodV/43jyBUpwGCixkglN/ZV3+cVaReSkSinNIngy7963Pef+kLD
 mTYc3VpLPSnQ5U+cer2j41fEG7MJ1keS+kePUMmZO7UCjPF8pgDqdDD+/eL97tb7
 NFw74rKmhdXRooJIJPhlB5oxt15NNC9ij4s5VzXygUsBdj+X3di6g31IOwF32V1P
 aEFpY9gEMiUtw+c=
 =PtpT
 -----END PGP SIGNATURE-----

Merge tag 'pci-v5.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix rockchip regression in rockchip_pcie_valid_device() (Lorenzo
   Pieralisi)

 - Add Pali Rohár as aardvark PCI maintainer (Pali Rohár)

* tag 'pci-v5.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  MAINTAINERS: Add Pali Rohár as aardvark PCI maintainer
  PCI: rockchip: Fix bus checks in rockchip_pcie_valid_device()
2020-10-02 14:48:25 -07:00
Linus Torvalds cb6f55af1f SCSI fixes on 20201002
Two patches in driver frameworks.  The iscsi one corrects a bug
 induced by a BPF change to network locking and the other is a
 regression we introduced.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
 -----BEGIN PGP SIGNATURE-----
 
 iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCX3d3QyYcamFtZXMuYm90
 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishWv9AP9lxJ1U
 32sHZ5d46Idsd8ipfYmEqCh8s/9cTvx9VEwmdQEAzeH3nvAEJXX4YEzmnsKeF6Nf
 IFLoRQ7RLEhfmNfJ/L0=
 =96lr
 -----END PGP SIGNATURE-----

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two patches in driver frameworks. The iscsi one corrects a bug induced
  by a BPF change to network locking and the other is a regression we
  introduced"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi: iscsi_tcp: Avoid holding spinlock while calling getpeername()
  scsi: target: Fix lun lookup for TARGET_SCF_LOOKUP_LUN_FROM_TAG case
2020-10-02 14:42:13 -07:00
Linus Torvalds 702bfc891d io_uring-5.9-2020-10-02
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl93Z48QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpmp4EACwxi4UVnL0zhaOBmXfqxDuaXViwkfVZNxx
 d40y+DcCewnpZMk2G9cES8OKG+Tu2GFX2yl1m2XdrIWJ6jpnGFKJOkNQGfPDQrT3
 fI7qFrEDeSVeLUMMBxtvZLW8w2D0KcNCgla4h/ESXI9xtPTZdYXhYQY0zfuWalUC
 ZplUgAWlHx82qJari7ZmIfeVtpAoujTvkccRe+/RtPv5vO+UsvP7kqPSCYMGqhHS
 7z5gK3Nw+PNMWrzZVZ6Rw5nLeExx9PJGgiEkitEjn7mRJELXV9eWnTt9D0eVwaec
 WO7OSQmrJLmMFER4ZhkDNJkXZFvlYUCygnwJQmH70LflRqUEA00O6wX4J32O3NIg
 fIDWKMGGANFU5atL+RHqfQgUYq0GY1UsIvZxJnwRwv1QssmJoQq9fpT6VYqiQMik
 2JAeWyMqTGI4vRNmVJKTR/13SpRUYrvS3wHN53kCaBBhE5Y/vFksgOGgXZBG/TPk
 odpegeJOTa5xuS0YcKIK6yL/xHENct1Y1BtVjczrXKJz0E90n5ZdIR0lEg6Ij3B1
 jZUwKiS2sY09eBaJIQvtD4hIaw5VgqtwinKTyt7MBw/6pCqJpSZtaV0Uvgvjq/Se
 1ifUo4cWwQBccZLgWeWoEalio2fNIyb+J+sm7eu9Xygjl67U2M8oMfAN2JjkM7As
 btLazer4lg==
 =fo3Z
 -----END PGP SIGNATURE-----

Merge tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:

 - fix for async buffered reads if read-ahead is fully disabled (Hao)

 - double poll match fix

 - ->show_fdinfo() potential ABBA deadlock complaint fix

* tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block:
  io_uring: fix async buffered reads when readahead is disabled
  io_uring: fix potential ABBA deadlock in ->show_fdinfo()
  io_uring: always delete double poll wait entry on match
2020-10-02 14:38:10 -07:00
Linus Torvalds f016a54052 block-5.9-2020-10-02
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl93Z28QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpucFEACjn38JQGjFxcT9034e4rTys3kPFcvC6yik
 8BZI33rYeuX3GAkuOAUeAoK5k8EfZBhjgHKX0DTaW4RZbggZC4fT9vVEKsRz1Ee2
 E0xLc1jUoUqQ397H+AhOHnVHylQJqUzy6dywyz7QHTH/fWmemKqvZLZrA/ujDkhS
 AxiKI+/E6DxYByi9mgOfSCCQSZVEUTS0Z9S9+fcKAJ9VSiJNu3d3UWFkcrCECmb8
 ChBgNuf/qpAT0lW6/L3eGv+qzDCgYw7VTEtGEONEJKLm84wYdcGWEFr3pNHTkxl6
 ZXHyfVno1DctGpiDEE84FYBvBW7lKogwJVJkh8niEOm9vkXUJYrSAJvuTyw9KRHJ
 wEse1Y3+uMhPLFmIkFMMayn/ErzddD64WGN7CJLMsiXs3z08cFNmLLU57nvrC3um
 AC0rJ10eYMxEQkJuTAoMOWzz3zjhwDxNZL1v/aUr73Tag5uFSoj3esJMKKAdjH82
 OYl6SB6rTcvnTcnaja0AzWCy5dSV1sbGWxc2PuEcobNkmrht24KsQk8Enw1YsnRa
 aLmrh8a6Ya8rbv3L9A1Uz51QXMAwtZJ/43l6nWwppuxntR1/ufZo8e4qt0XNqp/s
 4NJPoHHE4iqpw2+BnZjlzuomUQAStMew4h91J5d2QJZe+sl5+KMDvquW4uIUU4vr
 FBvHbrn1fA==
 =p7wt
 -----END PGP SIGNATURE-----

Merge tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Single fix for a ->commit_rqs failure case"

* tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block:
  blk-mq: call commit_rqs while list empty but error happen
2020-10-02 14:34:52 -07:00
Linus Torvalds d4fce2e20f Merge branch 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull epoll fixes from Al Viro:
 "Several race fixes in epoll"

* 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ep_create_wakeup_source(): dentry name can change under you...
  epoll: EPOLL_CTL_ADD: close the race in decision to take fast path
  epoll: replace ->visited/visited_list with generation count
  epoll: do not insert into poll queues until all sanity checks are done
2020-10-02 10:37:08 -07:00
Linus Torvalds db23baa28e RISC-V Fixes for 5.9
I have two fixes for this week:
 
 * The addition of a symbol export for clint_time_val, which has been inlined
   into some timex functions and can be used by drivers.
 * A fix to avoid calling get_cycles() before the timers have been probed.
 
 These both only effect !MMU systems.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAl93T4MTHHBhbG1lckBk
 YWJiZWx0LmNvbQAKCRAuExnzX7sYiYjFEACV2VwRp2Poy26NlVnGnk2dJRcsgSyo
 XFusL/nDUh1lp6UKHfxXt6DZYNZKit8MlEwbqCKBk76IaXJe8PG4e4nUxQ4MeTUU
 nHuIfzUN2OOUnubevF/P5cQB7/8IO6kdCTNksFaOcHDoARbufJiCvSnOX2onAnuD
 7FHgo3MjQURi9iAlaGez8ma1IcpyApVBs35WeThPNXZAu2xwRTOJEliQDOmWrGQL
 W+lQumiupuwnMVrOd2SFB0+2/O+GU8jv1tourV72B5uTDKl7P3MiwKdjR/GjqvN6
 Aopk7NxXLw1kW1PhuwFGDTs45r1VOrWQBwKOxGDfLHytVhWCq2B6u1DkC3pDc7KK
 nppcQgWF0VI2D24ZC39OgT/42V6lHgY9PQcP0ILA3XSNWEwW3zMVFJ3vDRble7an
 pTZ6cN74AMb0GoHPNTTwRWwpTF66EsHZz5Hrgde6E6MjEGHr7FTKPTuI1dJGMxFn
 mJj91daTRb9P8bYhdn4DSStz8qxP+ctv/KOjNtnvgOFgGQAnxddtYVEOGoLi3j1e
 3qJauIXdgnRBw8SegkbcbBukF8uyOXqUEfA62O/BXtiRcz+KNLf3/B1VbdM6xMvQ
 nVIb/OjFhty9dwWYLjyEyw4tM3X+UiKFeSnRxfELjHpe4xdrFVMAAGBVjPcmIq+O
 82F8bQxoFsZ7Ug==
 =C3QV
 -----END PGP SIGNATURE-----

Merge tag 'riscv-for-linus-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:
 "Two fixes for this week:

   - The addition of a symbol export for clint_time_val, which has been
     inlined into some timex functions and can be used by drivers.

   - A fix to avoid calling get_cycles() before the timers have been
     probed.

  These both only effect !MMU systems"

* tag 'riscv-for-linus-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Check clint_time_val before use
  clocksource: clint: Export clint_time_val for modules
2020-10-02 10:13:05 -07:00
Linus Torvalds 4e3b9ce271 for-5.9-rc7-tag
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAl93REAACgkQxWXV+ddt
 WDv0/A//XYr1XLC/5sMILHqYZ4ogiFxC3Nfjeyt6vfBPX3J0d2eHnw5Rw+ZHHHdQ
 qtoKWom9ZwCxjybghwmvfxJuohy+6Sc764aEj+rYpUcCmmUZsAZZpmwpZqpYG+0H
 DEn9p45T0MO+r5lsF/GdNqqsdXZfUlZy7PweIhZucQxENM8cowklqKCo4AU2IEW4
 203THU3UxQayn0um6kaiesioh8TtT+R9UVAyyA3n6lGINHKG8AMy0ulS/M2Uzgq5
 eAzWne4Opy+wLxubBdeqruPiQrFQp+JV/YhTTEHGKRXykRYXwZnCDYdK27X4UKkt
 g3Ne0cEd/JuxZfb3Mzsd7+MF0xr9xKJPziFXv7YZt0LkiHE+B0b/DwA9FksR9sdO
 4BY2oe0gztstIMqQ5qnriJMDQxonyUt2G65YW8sCI9b32vRYaHLhCWZRYzbmftEO
 W4FJOnAI2It3Ib0CUkBjkPYkmH113Q6g59k015IpoYRGmExhnC59zhuijdmthxFJ
 S5PXFymVhxt9iMOKM0jE17Rp/j4hVg/bdFVHJryzlOsldjq63Vukqoo24SQhiqfY
 qYn/Ilkc/h1YD/pxehFAhZcbGfEdjD5oo8OkGoKIUXfv35r7JH/5F/x+4DxZNnYk
 n0oHJ7WBR01AlHAcuTvsN7z9O2ZX6wZufkkgKYLBvtGtyC71T3A=
 =MT2i
 -----END PGP SIGNATURE-----

Merge tag 'for-5.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "Two more fixes.

  One is for a lockdep warning/lockup (also caught by syzbot), that one
  has been seen in practice. Regarding the other syzbot reports
  mentioned last time, they don't seem to be urgent and reliably
  reproducible so they'll be fixed later.

  The second fix is for a potential corruption when device replace
  finishes and the in-memory state of trim is not copied to the new
  device"

* tag 'for-5.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix filesystem corruption after a device replace
  btrfs: move btrfs_rm_dev_replace_free_srcdev outside of all locks
  btrfs: move btrfs_scratch_superblocks into btrfs_dev_replace_finishing
2020-10-02 10:09:40 -07:00
Linus Torvalds c513091103 Power management fixes for 5.9-rc8
- Fix up RCU usage for cpuidle on the ARM imx6q platform (Ulf
    Hansson).
 
  - Fix typo in the PM documentation (Yoann Congal).
 
  - Add return statement that is missing after recent changes
    in the intel_pstate driver (Zhang Rui).
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl93WHASHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRx9E4P/10ZjF3mCjYJlegRyvTsLPgFGbnE5zAY
 SFpa46kcMnX1gOaiNmQiPvi7PT7EB3SMI8yTdqqvXmPQObu5d+IDQzPEIOXaOGzy
 34FrF26NXEGzMLazQNOM/2qF2vIgsOgs/og308bJKKBlMyuHIjoDnu3CLaVV59Gw
 EDaeOzoLXCxcuXDsl0+ca2jOfPf31r5bEthgGKmMUWPT65gqvrjfJIYW4m0Qz6tu
 6FfX0opq4W85wei0ss3CU+m27uDgTPm4nZanmYe4aCYuKzqPlJLDNkfiERdsOs4b
 aNv/lbHqErz9Iz3Wn7wYAbXkh3hah318w0TXNOFHxwLsrhITZGz15/lLdE5D0RBq
 wOc9qkqBx9HKcVyA/Xlxzi2zTfe2sVLNBVobzBM5EeNs7v2/9iYBRTofsPhMsTdt
 MrtrL0cazVd1/jc9nn0zWMwJu5MZKwOnM613Hqfhc8+yaP8aA0+s7eNL/cP6Wkes
 XOmWYe4uUW/7qUk0bWSZlPT6eeXVuw06X/NTniLGS2bTPkwAXLeqaxlwSArXDdl7
 6qELZTLIe8lQ/CWiaYj5ycEpGXVPfO/liPJo/5r3GDRNvQM+TVPu9ZVgDdySJPH3
 djYFIRpipA07P9v/hqruHLDo0Cd/n+EaA/D1PFjib/2Ri3VnPr4Dmnzuq/wHvOcR
 HV9eVacatZpE
 =uZW1
 -----END PGP SIGNATURE-----

Merge tag 'pm-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix one more issue related to the recent RCU-lockdep changes, a
  typo in documentation and add a missing return statement to
  intel_pstate.

  Specifics:

   - Fix up RCU usage for cpuidle on the ARM imx6q platform (Ulf
     Hansson)

   - Fix typo in the PM documentation (Yoann Congal)

   - Add return statement that is missing after recent changes in the
     intel_pstate driver (Zhang Rui)"

* tag 'pm-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ARM: imx6q: Fixup RCU usage for cpuidle
  Documentation: PM: Fix a reStructuredText syntax error
  cpufreq: intel_pstate: Fix missing return statement
2020-10-02 10:05:56 -07:00
Linus Torvalds cc8ad8fa84 IIO fixes for 5.9-rc8
Here are two small IIO driver fixes for 5.9-rc8 that resolve some
 reported issues:
 	- driver name fixed in one driver
 	- device name typo fixed
 
 Both have been in linux-next for a while with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCX3c1MQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ykJIwCfe97UHoOUlJWH5IOM2e0Qfsfk9tAAoND99JYB
 LeLRvFzTFwLfmyEjoK4U
 =I4IP
 -----END PGP SIGNATURE-----

Merge tag 'staging-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull IIO fixes from Greg KH:
 "Here are two small IIO driver fixes for 5.9-rc8 that resolve some
  reported issues:

   - driver name fixed in one driver

   - device name typo fixed

  Both have been in linux-next for a while with no reported problems"

* tag 'staging-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: adc: qcom-spmi-adc5: fix driver name
  iio: adc: ad7124: Fix typo in device name
2020-10-02 10:01:00 -07:00
Linus Torvalds 0bf0dfda00 Some late GPIO fixes for the v5.9 series:
- Fix compiler warnings on the OMAP when PM is disabled
 
 - Clear the interrupt when setting edge sensitivity on the
   Spreadtrum driver.
 
 - Fix up spurious interrupts on the TC35894.
 
 - Support threaded interrupts on the Siox controller.
 
 - Fix resource leaks on the mockup driver.
 
 - Fix line event handling in syscall compatible mode
   for the character device.
 
 - Fix an unitialized variable in the PCA953A driver.
 
 - Fix access to all GPIO IRQs on the Aspeed AST2600.
 
 - Fix line direction on the AMD FCH driver.
 
 - Use the bitmap API instead of compiler intrinsics for
   bit manipulation in the PCA953x driver.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEElDRnuGcz/wPCXQWMQRCzN7AZXXMFAl928nQACgkQQRCzN7AZ
 XXNA2w//diOGCrrsGhnstCeSH1I0Aym26YjHtKaOhseJOxMjpdUGuhmUeJZo5hdR
 RmTcjPJTFROyiGAst/lQLXDt0FQSBnxm6mm0LEfTGjCErga5xqZ8l7WJNauJAlmt
 sia2SmRvN6gq5Bn1YcssNTiuDwoETbYHLfqHWP7tGMjjkpIkBjwdP5m2md4aA+jB
 JBZWqEBT1rxKw8Ksl37n/w4kuw3v/MioBy9VCV8XHEKEhOe15a0zejo6RM5OUpiV
 BxEz3HqsZa9FzXGwt+Es92XgxB8qvu3CQ++M4o1QDS5UZUGaZsUTCzqqbzbq/xFG
 zm2O3s/d0ZynwYpDy0CjBCuNNZPqeNMacp6Ad65rH5njw2rs79bI8W+aIZOOcqq8
 ft4hWKeUCMmLgsDW38+5hvXM8WPZTEQH1PZO1O2MWhSWS3tV2PYSqZCcYw895duD
 EPeGATs9zYt1DTysacaq+p2ZVd+NAgXwApMfNdpZh93igYBM6fdaZ+nd88tEfQCf
 wIVW4mtM7+Om+Jcm2XFYVKbUjQtNrMygQO19DpHig9K5PcXyRS93gavbPrNQ6gId
 21R8mtUNH1qiPU7/oFFnld4NKYYabdelEoS8EFebDlU4VHSvCQturXBMvhtEc9YE
 uaquBC1zG42zk3ZjH9/b00hf+TGfcfC26eVa3OavFDytlvwLJXo=
 =295T
 -----END PGP SIGNATURE-----

Merge tag 'gpio-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some late GPIO fixes for the v5.9 series:

   - Fix compiler warnings on the OMAP when PM is disabled

   - Clear the interrupt when setting edge sensitivity on the Spreadtrum
     driver.

   - Fix up spurious interrupts on the TC35894.

   - Support threaded interrupts on the Siox controller.

   - Fix resource leaks on the mockup driver.

   - Fix line event handling in syscall compatible mode for the
     character device.

   - Fix an unitialized variable in the PCA953A driver.

   - Fix access to all GPIO IRQs on the Aspeed AST2600.

   - Fix line direction on the AMD FCH driver.

   - Use the bitmap API instead of compiler intrinsics for bit
     manipulation in the PCA953x driver"

* tag 'gpio-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x
  gpio: pca953x: Use bitmap API over implicit GCC extension
  gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION
  gpio: aspeed: fix ast2600 bank properties
  gpio/aspeed-sgpio: don't enable all interrupts by default
  gpio/aspeed-sgpio: enable access to all 80 input & output sgpios
  gpio: pca953x: Fix uninitialized pending variable
  gpiolib: Fix line event handling in syscall compatible mode
  gpio: mockup: fix resource leak in error path
  gpio: siox: explicitly support only threaded irqs
  gpio: tc35894: fix up tc35894 interrupt configuration
  gpio: sprd: Clear interrupt when setting the type as edge
  gpio: omap: Fix warnings if PM is disabled
2020-10-02 09:51:42 -07:00
Linus Torvalds 2270b890bc MEMSTICK core:
- Fix deadlock when removing the host
 
 MMC host:
  - sdhci-pci: Workaround broken CMDQ on Intel GLK based IRBIS models
 -----BEGIN PGP SIGNATURE-----
 
 iQJLBAABCgA1FiEEugLDXPmKSktSkQsV/iaEJXNYjCkFAl923DcXHHVsZi5oYW5z
 c29uQGxpbmFyby5vcmcACgkQ/iaEJXNYjCkZMBAAlE9Evd4HUF1Haeb+CsBCVLb9
 sBvaMw3u/7Gxgc+W7EGVenJRU6/j3aXxuNel3witJVIsJIXKWUYNS4Kt1l9OFJZi
 YB4gxZ62SsSlCgfz3HYX4H+fo3bVXvXXIYYAdp8WohAwpckFVHmrr48mc0HV//R4
 Wg3fWK66k30pUzJLXpwgca9nP/u7RP69IjYW50xo8Xky+yghhzqPGV7VuEtPCUXp
 N9QZQbq6L5URI1Zmgc1L63GcOHM2VDVxKkMI9WeU4s7rObU2kZvScPD3jDd/68r2
 JH9wU1C30AlPTCwBeesJVhN9m+R3Bj5Z3+yEtk0fJJ0mTDSlp0W+7QNe7t83Y+KV
 TOcOEHNdCCuGlAr+b1Cq9Tr0seMAa++Kvs313++MhxJB5DE2m0RKqJF6bqluM3jf
 n/f+IjdnLEk3cdxndFgKmgsuuXytg41Qw7PKLY0N4MrI2Dkw5dCpJ7WXAHwOx03O
 mAquuJSUU0CL74CNCZjSVICRVOzGFc1/UBF8mQ3R8rU4FnpwWUI4mkbhqs3Fr1s/
 puUXMLfCk/rz9e/8kTehoEw+/A7xGx0q/EPpNp0SeqLaf+rlT3rKNKK+QvyAKBof
 YPCrA2n9QJYaSSzXcI7qjtUTkxioS5SrB8tuE8SCA3A1AaAgzBooUr/1qPMvTVUL
 vtr+rtk2slCdfOcTsq8=
 =0yiW
 -----END PGP SIGNATURE-----

Merge tag 'mmc-v5.9-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

 - Fix deadlock when removing MEMSTICK host

 - Workaround broken CMDQ on Intel GLK based IRBIS models

* tag 'mmc-v5.9-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci: Workaround broken command queuing on Intel GLK based IRBIS models
  memstick: Skip allocating card when removing host
2020-10-02 09:40:09 -07:00
Thibaut Sautereau 09a6b0bc3b random32: Restore __latent_entropy attribute on net_rand_state
Commit f227e3ec3b ("random32: update the net random state on interrupt
and activity") broke compilation and was temporarily fixed by Linus in
83bdc7275e ("random32: remove net_rand_state from the latent entropy
gcc plugin") by entirely moving net_rand_state out of the things handled
by the latent_entropy GCC plugin.

From what I understand when reading the plugin code, using the
__latent_entropy attribute on a declaration was the wrong part and
simply keeping the __latent_entropy attribute on the variable definition
was the correct fix.

Fixes: 83bdc7275e ("random32: remove net_rand_state from the latent entropy gcc plugin")
Acked-by: Willy Tarreau <w@1wt.eu>
Cc: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-02 09:31:54 -07:00
Rafael J. Wysocki 7bbe8f2a7e Merge branch 'pm-cpufreq'
* pm-cpufreq:
  cpufreq: intel_pstate: Fix missing return statement
2020-10-02 18:30:30 +02:00
Roman Gushchin be458311cd mm: memcg/slab: fix slab statistics in !SMP configuration
Since commit ea426c2a7d ("mm: memcg: prepare for byte-sized vmstat
items") the write side of slab counters accepts a value in bytes and
converts it to pages.  It happens in __mod_node_page_state().

However a non-SMP version of __mod_node_page_state() doesn't perform
this conversion.  It leads to incorrect (unrealistically high) slab
counters values.  Fix this by adding a similar conversion to the non-SMP
version of __mod_node_page_state().

Signed-off-by: Roman Gushchin <guro@fb.com>
Reported-and-tested-by: Bastian Bittorf <bb@npl.de>
Fixes: ea426c2a7d ("mm: memcg: prepare for byte-sized vmstat items")
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-02 09:13:41 -07:00
Linus Torvalds 472e5b056f pipe: remove pipe_wait() and fix wakeup race with splice
The pipe splice code still used the old model of waiting for pipe IO by
using a non-specific "pipe_wait()" that waited for any pipe event to
happen, which depended on all pipe IO being entirely serialized by the
pipe lock.  So by checking the state you were waiting for, and then
adding yourself to the wait queue before dropping the lock, you were
guaranteed to see all the wakeups.

Strictly speaking, the actual wakeups were not done under the lock, but
the pipe_wait() model still worked, because since the waiter held the
lock when checking whether it should sleep, it would always see the
current state, and the wakeup was always done after updating the state.

However, commit 0ddad21d3e ("pipe: use exclusive waits when reading or
writing") split the single wait-queue into two, and in the process also
made the "wait for event" code wait for _two_ wait queues, and that then
showed a race with the wakers that were not serialized by the pipe lock.

It's only splice that used that "pipe_wait()" model, so the problem
wasn't obvious, but Josef Bacik reports:

 "I hit a hang with fstest btrfs/187, which does a btrfs send into
  /dev/null. This works by creating a pipe, the write side is given to
  the kernel to write into, and the read side is handed to a thread that
  splices into a file, in this case /dev/null.

  The box that was hung had the write side stuck here [pipe_write] and
  the read side stuck here [splice_from_pipe_next -> pipe_wait].

  [ more details about pipe_wait() scenario ]

  The problem is we're doing the prepare_to_wait, which sets our state
  each time, however we can be woken up either with reads or writes. In
  the case above we race with the WRITER waking us up, and re-set our
  state to INTERRUPTIBLE, and thus never break out of schedule"

Josef had a patch that avoided the issue in pipe_wait() by just making
it set the state only once, but the deeper problem is that pipe_wait()
depends on a level of synchonization by the pipe mutex that it really
shouldn't.  And the whole "wait for any pipe state change" model really
isn't very good to begin with.

So rather than trying to work around things in pipe_wait(), remove that
legacy model of "wait for arbitrary pipe event" entirely, and actually
create functions that wait for the pipe actually being readable or
writable, and can do so without depending on the pipe lock serializing
everything.

Fixes: 0ddad21d3e ("pipe: use exclusive waits when reading or writing")
Link: https://lore.kernel.org/linux-fsdevel/bfa88b5ad6f069b2b679316b9e495a970130416c.1601567868.git.josef@toxicpanda.com/
Reported-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-and-tested-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-01 19:14:36 -07:00
Linus Torvalds 44b6e23be3 IOMMU Fixes for Linux v5.9-rc7
Including:
 
 	- Fix a device reference counting bug in the Exynos IOMMU
 	  driver.
 
 	- Lockdep fix for the Intel VT-d driver.
 
 	- Fix a bug in the AMD IOMMU driver which caused corruption of
 	  the IVRS ACPI table and caused IOMMU driver initialization
 	  failures in kdump kernels.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEr9jSbILcajRFYWYyK/BELZcBGuMFAl92Iw8ACgkQK/BELZcB
 GuPI9g//QNQJlLsOVWPVh1es5s3CGA8FJ3INa/SXMCD3q+izsyLX7+MpWhEAO4SN
 38F1rFbEkMNKDDuOCzRtBvg8QpJHDrgD5V5IXeK07BDBcVDWO2PgMDAdIx4GGSWL
 PztJ03swki643vp4fr3eOgkuQlJs+mVRVIbtWh6Xj/ioG/AGaOzVhKehmyjaJ5O9
 poQe85/aJ4fkmegNPI4NMxU/QokAi0oY+JBuN5IdkvjbSUiC9JYimisjYGMwthfj
 UYUuxy7M1OQuO5DMURYth8wJJtU6ipUI4UwQBj16His4SVabTLWDWvNS2R/vmIOt
 ogqyAx9hbv4xzhMvCbQDvrzmKsvQheEhz2XXPFKJy0zPSKeMghqymOoNrsMSIjVG
 gd8fYJPgBi6P8O6rYHRPBjqqjdYyoFusu94es9j6/pflRQu4M5edvLv1se+GFhUN
 UkwN8KyVFQ2RNLoJg07S6PC136xGhb9cW9FX+xmzOVpeiK839pVykWWhqDd0dPCU
 x6KXnBZGBKMpyHcWLv+FusHIQB2KXhJWYR9q28oZdy06ut9Agw3OBo/fYoR6dRAD
 7jwQM/0MIt+3eLPWcSvJgWWl7ivaT7bUDm8qiLSU1SniMv7MtTMAlauqLq7hGnoX
 kHX5q1xHz56PLS38QpKQWBhky7GHZLBXxqfvuVzggt/lNo8/QAE=
 =3prr
 -----END PGP SIGNATURE-----

Merge tag 'iommu-fixes-v5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:

 - Fix a device reference counting bug in the Exynos IOMMU driver.

 - Lockdep fix for the Intel VT-d driver.

 - Fix a bug in the AMD IOMMU driver which caused corruption of the IVRS
   ACPI table and caused IOMMU driver initialization failures in kdump
   kernels.

* tag 'iommu-fixes-v5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()
  iommu/amd: Fix the overwritten field in IVMD header
  iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()
2020-10-01 12:59:36 -07:00
Linus Torvalds eed2ef4403 A previous commit to prevent AML memory opregions from accessing the
kernel memory turned out to be too restrictive. Relax the permission
 check to permit the ACPI core to map kernel memory used for table
 overrides.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAl92EsYACgkQa9axLQDI
 XvEQgg/+PXA8mjVvRzgeEIWggJJWJOgStTuiyynSSLO8KiBXUXYs2MHCib8aNvAM
 z3GwJnoRUY1Le5gt69PTDC3Aka8ZEz+fij+kXp94H0BtotKLtB4dEeeac/2dKOTE
 mzmPnWbG6JMCiuTs7Ce0ItBCF+Pvwv/1BtUf12NTHCXXo156zUcYr7y2UztF7hLm
 8Hb4kbYDDiy4a3tBvu99u4OUqaimXc8vmXsD1Hl/Op+riGU/oEoZ5+PcsC3s5jz0
 eLO3RQDB36IQXoXSXMGJ59UO5IkXV5V9TadmuzlOeVjuejFSJWkLGA/CQoUWQ+Kq
 lcdwYwBqCrQvsVl1d/kyQDHbdEq409XTpQlsExlX/mh4fAV1He7TWTtCIhbGnz/x
 2YP/vV0FNBKNv/mtcBvH/BJKNlXZy5xdYLin+iCJtHby9lIt1bV0nFCLwSvQnDC4
 wm/Lo68gOoaCm0uHuledU1VSqmRQb9zJiGywgzVnB4PXycrdIGGRZOPxCGUfMACk
 fJE3t4MmenLgbPLa4gCUiMAxipIHiBc3prNE/4dFNH/PpUyHoXiZodVGdkff3GYy
 o9q691GwR352T5dc+jQx7t7ng1NqZqa6DZA4+oMfQbStXeM0m4AoDSqX0j6CAg9c
 JyReQ8BxqZ/jNzbCZaFoqNSbJwvWewvNNiSzBkHtZXrOZfi8H7U=
 =wQ+N
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fix from Catalin Marinas:
 "A previous commit to prevent AML memory opregions from accessing the
  kernel memory turned out to be too restrictive. Relax the permission
  check to permit the ACPI core to map kernel memory used for table
  overrides"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: permit ACPI core to map kernel memory used for table overrides
2020-10-01 11:49:01 -07:00
Linus Torvalds fcadab7404 drm amd/vmwgfx fixes for 5.9-rc8
vmwgfx:
 - fix a regression due to TTM refactor
 
 amdgpu:
 - Fix potential double free in userptr handling
 - Sienna Cichlid and Navy Flounder udpates
 - Add Sienna Cichlid PCI IDs
 - Drop experimental flag for navi12
 - Raven fixes
 - Renoir fixes
 - HDCP fix
 - DCN3 fix for clang and older versions of gcc
 - Fix a runtime pm refcount issue
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJfdXGyAAoJEAx081l5xIa+MgoP/jhkWg4mn1rTx+UKUr8Y0xW3
 iOY3exYMmCWcpoot8Pz9YsJkKkL0UXMg+4GjJoyGpeqK6dmHMsTCtjslFueSUjAk
 5PTTFB2q/JsbibOfXmPEm37iICATUQZIRpyS9oV00iHLS49MhyNJjtzCBDGuyFci
 hzThJF2+4ihLTtMpcXVBbyxTx5x8zTdgxbeu7If5Mhqa9cTFhE5p971oUMhlnzMr
 L138iMad12AFDfhCZoX2qdaWMximu2fpTzJHSSF3PuZazYAdleZMpY953ZNLvOEo
 /KhKRRoUnIe0t22CyF59DbwuVLlr2c67r/KQ8cbsyHnyWTj0q5GnXxRAUnG7ql76
 KpWNQG6WA0zd7ou9Dhp7JlwwYQdUqG41MN7WWg2BTUTTSd9gpqMgoVAvOGCmGvEt
 MTCn4BGB95WtR99k/cIFwYVPbOMDlI22TNC3o1LdivMuJDXpSrVVHJv1uGuWyRRE
 XtLM30A6eKCxD+Wup6pXpBlzOIkYLWPOxtpdmRmRhu2f8AyUOZYr2SUXsV8UKXyL
 jnk7mhJSXxZZZUycZGj5amg2pbcUI8TgyHupKiVVcOpOmULgm5u6G9eAqeaK02DL
 +0JK+IoofZ8aNU9ZjiGjbIb+wEi38+atKwxf8MpKMwCD549x6CNIAyeUQtbUg4TR
 HpO2f8/8pk2NrrKY6pFi
 =WyKj
 -----END PGP SIGNATURE-----

Merge tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "AMD and vmwgfx fixes.

  Just dequeuing these a bit early as the AMD ones are bit larger than
  I'd prefer, but Alex missed last week so it's a double set of fixes.
  The larger ones are just register header fixes for the new chips that
  were just introduced in rc1 along with some new PCI IDs for new hw.
  Otherwise it is usual fixes.

  The vmwgfx fix was due to some testing I was doing and found we
  weren't booting properly, vmware had the fix internally so hurried it

  vmwgfx:
   - fix a regression due to TTM refactor

  amdgpu:
   - Fix potential double free in userptr handling
   - Sienna Cichlid and Navy Flounder udpates
   - Add Sienna Cichlid PCI IDs
   - Drop experimental flag for navi12
   - Raven fixes
   - Renoir fixes
   - HDCP fix
   - DCN3 fix for clang and older versions of gcc
   - Fix a runtime pm refcount issue"

* tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: disable gfxoff temporarily for navy_flounder
  drm/amd/pm: setup APU dpm clock table in SMU HW initialization
  drm/vmwgfx: Fix error handling in get_node
  drm/amd/display: remove duplicate call to rn_vbios_smu_get_smu_version()
  drm/amdgpu/swsmu/smu12: fix force clock handling for mclk
  drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
  drm/amdgpu/display: fix CFLAGS setup for DCN30
  drm/amd/display: fix return value check for hdcp_work
  drm/amdgpu: remove gpu_info fw support for sienna_cichlid etc.
  drm/amd/pm: Removed fixed clock in auto mode DPM
  drm/amdgpu: remove experimental flag from navi12
  drm/amdgpu: add device ID for sienna_cichlid (v2)
  drm/amdgpu: use the AV1 defines for VCN 3.0
  drm/amdgpu: add VCN 3.0 AV1 registers
  drm/amdgpu: add the GC 10.3 VRS registers
  drm/amdgpu: prevent double kfree ttm->sg
2020-10-01 09:45:37 -07:00
Linus Torvalds aa5ff93523 Two tracing fixes:
- Fix temp buffer accounting that caused a WARNING for
   ftrace_dump_on_opps()
 
 - Move the recursion check in one of the function callback helpers to the
   beginning of the function, as if the rcu_is_watching() gets traced, it
   will cause a recursive loop that will crash the kernel.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCX3UZ7hQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qlelAP4nzEIyE7s8HkKHo+IEvzEiYL523Xq7
 zrTm27XnLjZ+EQD9ECbtea9me8kL+zBcG8H3Wu/ykN15LIT2ZsvVTrWYmwI=
 =eTh4
 -----END PGP SIGNATURE-----

Merge tag 'trace-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Two tracing fixes:

   - Fix temp buffer accounting that caused a WARNING for
     ftrace_dump_on_opps()

   - Move the recursion check in one of the function callback helpers to
     the beginning of the function, as if the rcu_is_watching() gets
     traced, it will cause a recursive loop that will crash the kernel"

* tag 'trace-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Move RCU is watching check after recursion check
  tracing: Fix trace_find_next_entry() accounting of temp buffer size
2020-10-01 09:41:02 -07:00
Lu Baolu 1a3f2fd7fc iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()
Lock(&iommu->lock) without disabling irq causes lockdep warnings.

[   12.703950] ========================================================
[   12.703962] WARNING: possible irq lock inversion dependency detected
[   12.703975] 5.9.0-rc6+ #659 Not tainted
[   12.703983] --------------------------------------------------------
[   12.703995] systemd-udevd/284 just changed the state of lock:
[   12.704007] ffffffffbd6ff4d8 (device_domain_lock){..-.}-{2:2}, at:
               iommu_flush_dev_iotlb.part.57+0x2e/0x90
[   12.704031] but this lock took another, SOFTIRQ-unsafe lock in the past:
[   12.704043]  (&iommu->lock){+.+.}-{2:2}
[   12.704045]

               and interrupts could create inverse lock ordering between
               them.

[   12.704073]
               other info that might help us debug this:
[   12.704085]  Possible interrupt unsafe locking scenario:

[   12.704097]        CPU0                    CPU1
[   12.704106]        ----                    ----
[   12.704115]   lock(&iommu->lock);
[   12.704123]                                local_irq_disable();
[   12.704134]                                lock(device_domain_lock);
[   12.704146]                                lock(&iommu->lock);
[   12.704158]   <Interrupt>
[   12.704164]     lock(device_domain_lock);
[   12.704174]
                *** DEADLOCK ***

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200927062428.13713-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2020-10-01 14:54:17 +02:00
Juergen Gross 0891fb39ba xen/events: don't use chip_data for legacy IRQs
Since commit c330fb1ddc ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
Xen is using the chip_data pointer for storing IRQ specific data. When
running as a HVM domain this can result in problems for legacy IRQs, as
those might use chip_data for their own purposes.

Use a local array for this purpose in case of legacy IRQs, avoiding the
double use.

Cc: stable@vger.kernel.org
Fixes: c330fb1ddc ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Stefan Bader <stefan.bader@canonical.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20200930091614.13660-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2020-10-01 14:45:26 +02:00
Adrian Huang 0bbe4ced53 iommu/amd: Fix the overwritten field in IVMD header
Commit 387caf0b75 ("iommu/amd: Treat per-device exclusion
ranges as r/w unity-mapped regions") accidentally overwrites
the 'flags' field in IVMD (struct ivmd_header) when the I/O
virtualization memory definition is associated with the
exclusion range entry. This leads to the corrupted IVMD table
(incorrect checksum). The kdump kernel reports the invalid checksum:

ACPI BIOS Warning (bug): Incorrect checksum in table [IVRS] - 0x5C, should be 0x60 (20200717/tbprint-177)
AMD-Vi: [Firmware Bug]: IVRS invalid checksum

Fix the above-mentioned issue by modifying the 'struct unity_map_entry'
member instead of the IVMD header.

Cleanup: The *exclusion_range* functions are not used anymore, so
get rid of them.

Fixes: 387caf0b75 ("iommu/amd: Treat per-device exclusion ranges as r/w unity-mapped regions")
Reported-and-tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Adrian Huang <ahuang12@lenovo.com>
Cc: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20200926102602.19177-1-adrianhuang0701@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2020-10-01 14:11:36 +02:00
Marc Zyngier 452d622279 KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest
Commit a0e50aa3f4 ("KVM: arm64: Factor out stage 2 page table
data from struct kvm") dropped the ISB after __load_guest_stage2(),
only leaving the one that is required when the speculative AT
workaround is in effect.

As Andrew points it: "This alternative is 'backwards' to avoid a
double ISB as there is one in __load_guest_stage2 when the workaround
is active."

Restore the missing ISB, conditionned on the AT workaround not being
active.

Fixes: a0e50aa3f4 ("KVM: arm64: Factor out stage 2 page table data from struct kvm")
Reported-by: Andrew Scull <ascull@google.com>
Reported-by: Thomas Tai <thomas.tai@oracle.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2020-10-01 09:53:45 +01:00
Andy Shevchenko 8c1f1c3477 gpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x
When driver has been converted to the bitmap API the non-bitmap functions
started behaving differently on 32-bit BE architectures since the bytes in
two consequent unsigned longs are in different order in comparison to byte
array. Hence if the chip had had more than 32 lines the memset() call over
it would have not set up upper lines correctly.
Although it's currently a theoretical case (no supported chips of this type
has 32+ lines), it's better to provide a clean code to avoid people thinking
this is okay and potentially producing not fully working things.

Fixes: 35d13d9489 ("gpio: pca953x: convert to use bitmap API")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200930142013.59247-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-10-01 10:00:18 +02:00
Andy Shevchenko e09e200e07 gpio: pca953x: Use bitmap API over implicit GCC extension
In IRQ handler we have to clear bitmap before use. Currently
the GCC extension has been used for that. For sake of the consistency
switch to bitmap API. As expected bloat-o-meter shows no difference
in the object size.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200930142013.59247-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-10-01 10:00:17 +02:00
Hanks Chen 39c4dbe4cc pinctrl: mediatek: check mtk_is_virt_gpio input parameter
check mtk_is_virt_gpio input parameter,
virtual gpio need to support eint mode.

add error handler for the ko case
to fix this boot fail:
pc : mtk_is_virt_gpio+0x20/0x38 [pinctrl_mtk_common_v2]
lr : mtk_gpio_get_direction+0x44/0xb0 [pinctrl_paris]

Fixes: edd5464650 ("pinctrl: mediatek: avoid virtual gpio trying to set reg")
Signed-off-by: Hanks Chen <hanks.chen@mediatek.com>
Acked-by: Sean Wang <sean.wang@kernel.org>
Singed-off-by: Jie Yang <sin_jieyang@mediatek.com>
Link: https://lore.kernel.org/r/1597922546-29633-1-git-send-email-hanks.chen@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-10-01 09:51:36 +02:00
Dmitry Baryshkov 5d8ff95a52 pinctrl: qcom: sm8250: correct sdc2_clk
Correct sdc2_clk pin definition (register offset is wrong, verified by
the msm-4.19 driver).

Fixes: 4e3ec9e407 ("pinctrl: qcom: Add sm8250 pinctrl driver.")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200914091846.55204-1-dmitry.baryshkov@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-10-01 09:51:16 +02:00
Dave Airlie 132d7c8abe Merge tag 'amd-drm-fixes-5.9-2020-09-30' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
amd-drm-fixes-5.9-2020-09-30:

amdgpu:
- Fix potential double free in userptr handling
- Sienna Cichlid and Navy Flounder udpates
- Add Sienna Cichlid PCI IDs
- Drop experimental flag for navi12
- Raven fixes
- Renoir fixes
- HDCP fix
- DCN3 fix for clang and older versions of gcc
- Fix a runtime pm refcount issue

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200930161326.4243-1-alexander.deucher@amd.com
2020-10-01 15:25:33 +10:00
Pali Rohár 76a6b0b90d MAINTAINERS: Add Pali Rohár as aardvark PCI maintainer
Link: https://lore.kernel.org/r/20200925092115.16546-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Petazzzoni <thomas.petazzoni@bootlin.com>
2020-09-30 16:51:14 -05:00
Ard Biesheuvel a509a66a9d arm64: permit ACPI core to map kernel memory used for table overrides
Jonathan reports that the strict policy for memory mapped by the
ACPI core breaks the use case of passing ACPI table overrides via
initramfs. This is due to the fact that the memory type used for
loading the initramfs in memory is not recognized as a memory type
that is typically used by firmware to pass firmware tables.

Since the purpose of the strict policy is to ensure that no AML or
other ACPI code can manipulate any memory that is used by the kernel
to keep its internal state or the state of user tasks, we can relax
the permission check, and allow mappings of memory that is reserved
and marked as NOMAP via memblock, and therefore not covered by the
linear mapping to begin with.

Fixes: 1583052d11 ("arm64/acpi: disallow AML memory opregions to access kernel memory")
Fixes: 325f5585ec ("arm64/acpi: disallow writeable AML opregion mapping for EFI code regions")
Reported-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Link: https://lore.kernel.org/r/20200929132522.18067-1-ardb@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-09-30 22:27:51 +01:00
Linus Torvalds 60e7209315 Another batch of clk driver fixes
- Make sure DRAM and ChipID region doesn't get disabled on Exynos
  - Fix a SATA failure on Tegra
  - Fix the emac_ptp clk divider on stratix10
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCAAvFiEE9L57QeeUxqYDyoaDrQKIl8bklSUFAl90zvcRHHNib3lkQGtl
 cm5lbC5vcmcACgkQrQKIl8bklSV47g/+OI9ik34XB9iTuJH9MonIulqi4nVtXu4f
 08DRsgi8NczprzyOqISMka3AytoCgNtRBxvvMCuMqVQwsP+6EtOoqDYiYNKw65Vz
 F4AftY8jZ3m/f7+4VeHNnApxFxe6afSby6LujL2pOo25izB1fQH6obQYeiW/z7yr
 n70AEfWruGvaetbS5nxPBqlEuljdKef8WU+mG2ZVEBVS7AecEY63wFZ4LcSQQ5JK
 KBENcyLd1iMDb46TVs260jL1FNuDHFmorEgTPG/p7oEGyATStCoKlT59v2TfS4mi
 RVU8ytaYB4046oZfpPDwwuBWEUN9GpbHBmpeW0/nZjNrIMmpphMcmv816xBPsgM3
 IMos2hBKt3XLYwDnHb05btJvtE+z99b3NOyS2O4852fLYuiEMhYMKqbDx8h+qAKg
 iFFEHr+FVMtX4p2NidunbKVtqp8N+cXD1v5CSDatInGf6NFyM/7yDyjqn19IXxpd
 DD3VtDVf17TC9Lz10Ejp3yV0BEi3WvI+pAjNNkZ/JlX21QcWxNPMhQNSc9Otgk4Z
 eoEwDMSgRb7aJqdiR/3FLKseJkQhytkC++RWADjbVX6Qzd12ptbfz6VBY9XpxgBy
 WTZAno433Xo//q5DhxMITnREKKMJjUlBYP6HfPdMEJXYwIOep0siTVgW0S52Te6D
 PEVmuJPTVKA=
 =CJSx
 -----END PGP SIGNATURE-----

Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Another batch of clk driver fixes:

   - Make sure DRAM and ChipID region doesn't get disabled on Exynos

   - Fix a SATA failure on Tegra

   - Fix the emac_ptp clk divider on stratix10"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: socfpga: stratix10: fix the divider for the emac_ptp_free_clk
  clk: samsung: exynos4: mark 'chipid' clock as CLK_IGNORE_UNUSED
  clk: tegra: Fix missing prototype for tegra210_clk_register_emc()
  clk: tegra: Always program PLL_E when enabled
  clk: tegra: Capitalization fixes
  clk: samsung: Keep top BPLL mux on Exynos542x enabled
2020-09-30 14:18:38 -07:00
Anup Patel aa9887608e
RISC-V: Check clint_time_val before use
The NoMMU kernel is broken for QEMU virt machine from Linux-5.9-rc6
because clint_time_val is used even before CLINT driver is probed
at following places:
1. rand_initialize() calls get_cycles() which in-turn uses
   clint_time_val
2. boot_init_stack_canary() calls get_cycles() which in-turn
   uses clint_time_val

The issue#1 (above) is fixed by providing custom random_get_entropy()
for RISC-V NoMMU kernel. For issue#2 (above), we remove dependency of
boot_init_stack_canary() on get_cycles() and this is aligned with the
boot_init_stack_canary() implementations of ARM, ARM64 and MIPS kernel.

Fixes: d5be89a8d1 ("RISC-V: Resurrect the MMIO timer implementation for M-mode systems")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Tested-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-09-30 11:05:14 -07:00
Filipe Manana 4c8f353272 btrfs: fix filesystem corruption after a device replace
We use a device's allocation state tree to track ranges in a device used
for allocated chunks, and we set ranges in this tree when allocating a new
chunk. However after a device replace operation, we were not setting the
allocated ranges in the new device's allocation state tree, so that tree
is empty after a device replace.

This means that a fitrim operation after a device replace will trim the
device ranges that have allocated chunks and extents, as we trim every
range for which there is not a range marked in the device's allocation
state tree. It is also important during chunk allocation, since the
device's allocation state is used to determine if a range is already
allocated when allocating a new chunk.

This is trivial to reproduce and the following script triggers the bug:

  $ cat reproducer.sh
  #!/bin/bash

  DEV1="/dev/sdg"
  DEV2="/dev/sdh"
  DEV3="/dev/sdi"

  wipefs -a $DEV1 $DEV2 $DEV3 &> /dev/null

  # Create a raid1 test fs on 2 devices.
  mkfs.btrfs -f -m raid1 -d raid1 $DEV1 $DEV2 > /dev/null
  mount $DEV1 /mnt/btrfs

  xfs_io -f -c "pwrite -S 0xab 0 10M" /mnt/btrfs/foo

  echo "Starting to replace $DEV1 with $DEV3"
  btrfs replace start -B $DEV1 $DEV3 /mnt/btrfs
  echo

  echo "Running fstrim"
  fstrim /mnt/btrfs
  echo

  echo "Unmounting filesystem"
  umount /mnt/btrfs

  echo "Mounting filesystem in degraded mode using $DEV3 only"
  wipefs -a $DEV1 $DEV2 &> /dev/null
  mount -o degraded $DEV3 /mnt/btrfs
  if [ $? -ne 0 ]; then
          dmesg | tail
          echo
          echo "Failed to mount in degraded mode"
          exit 1
  fi

  echo
  echo "File foo data (expected all bytes = 0xab):"
  od -A d -t x1 /mnt/btrfs/foo

  umount /mnt/btrfs

When running the reproducer:

  $ ./replace-test.sh
  wrote 10485760/10485760 bytes at offset 0
  10 MiB, 2560 ops; 0.0901 sec (110.877 MiB/sec and 28384.5216 ops/sec)
  Starting to replace /dev/sdg with /dev/sdi

  Running fstrim

  Unmounting filesystem
  Mounting filesystem in degraded mode using /dev/sdi only
  mount: /mnt/btrfs: wrong fs type, bad option, bad superblock on /dev/sdi, missing codepage or helper program, or other error.
  [19581.748641] BTRFS info (device sdg): dev_replace from /dev/sdg (devid 1) to /dev/sdi started
  [19581.803842] BTRFS info (device sdg): dev_replace from /dev/sdg (devid 1) to /dev/sdi finished
  [19582.208293] BTRFS info (device sdi): allowing degraded mounts
  [19582.208298] BTRFS info (device sdi): disk space caching is enabled
  [19582.208301] BTRFS info (device sdi): has skinny extents
  [19582.212853] BTRFS warning (device sdi): devid 2 uuid 1f731f47-e1bb-4f00-bfbb-9e5a0cb4ba9f is missing
  [19582.213904] btree_readpage_end_io_hook: 25839 callbacks suppressed
  [19582.213907] BTRFS error (device sdi): bad tree block start, want 30490624 have 0
  [19582.214780] BTRFS warning (device sdi): failed to read root (objectid=7): -5
  [19582.231576] BTRFS error (device sdi): open_ctree failed

  Failed to mount in degraded mode

So fix by setting all allocated ranges in the replace target device when
the replace operation is finishing, when we are holding the chunk mutex
and we can not race with new chunk allocations.

A test case for fstests follows soon.

Fixes: 1c11b63eff ("btrfs: replace pending/pinned chunks lists with io tree")
CC: stable@vger.kernel.org # 5.2+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-09-30 19:40:51 +02:00
Josef Bacik a466c85edc btrfs: move btrfs_rm_dev_replace_free_srcdev outside of all locks
When closing and freeing the source device we could end up doing our
final blkdev_put() on the bdev, which will grab the bd_mutex.  As such
we want to be holding as few locks as possible, so move this call
outside of the dev_replace->lock_finishing_cancel_unmount lock.  Since
we're modifying the fs_devices we need to make sure we're holding the
uuid_mutex here, so take that as well.

There's a report from syzbot probably hitting one of the cases where
the bd_mutex and device_list_mutex are taken in the wrong order, however
it's not with device replace, like this patch fixes. As there's no
reproducer available so far, we can't verify the fix.

https://lore.kernel.org/lkml/000000000000fc04d105afcf86d7@google.com/
dashboard link: https://syzkaller.appspot.com/bug?extid=84a0634dc5d21d488419

  WARNING: possible circular locking dependency detected
  5.9.0-rc5-syzkaller #0 Not tainted
  ------------------------------------------------------
  syz-executor.0/6878 is trying to acquire lock:
  ffff88804c17d780 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x30/0x520 fs/block_dev.c:1804

  but task is already holding lock:
  ffff8880908cfce0 (&fs_devs->device_list_mutex){+.+.}-{3:3}, at: close_fs_devices.part.0+0x2e/0x800 fs/btrfs/volumes.c:1159

  which lock already depends on the new lock.

  the existing dependency chain (in reverse order) is:

  -> #4 (&fs_devs->device_list_mutex){+.+.}-{3:3}:
	 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
	 __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
	 btrfs_finish_chunk_alloc+0x281/0xf90 fs/btrfs/volumes.c:5255
	 btrfs_create_pending_block_groups+0x2f3/0x700 fs/btrfs/block-group.c:2109
	 __btrfs_end_transaction+0xf5/0x690 fs/btrfs/transaction.c:916
	 find_free_extent_update_loop fs/btrfs/extent-tree.c:3807 [inline]
	 find_free_extent+0x23b7/0x2e60 fs/btrfs/extent-tree.c:4127
	 btrfs_reserve_extent+0x166/0x460 fs/btrfs/extent-tree.c:4206
	 cow_file_range+0x3de/0x9b0 fs/btrfs/inode.c:1063
	 btrfs_run_delalloc_range+0x2cf/0x1410 fs/btrfs/inode.c:1838
	 writepage_delalloc+0x150/0x460 fs/btrfs/extent_io.c:3439
	 __extent_writepage+0x441/0xd00 fs/btrfs/extent_io.c:3653
	 extent_write_cache_pages.constprop.0+0x69d/0x1040 fs/btrfs/extent_io.c:4249
	 extent_writepages+0xcd/0x2b0 fs/btrfs/extent_io.c:4370
	 do_writepages+0xec/0x290 mm/page-writeback.c:2352
	 __writeback_single_inode+0x125/0x1400 fs/fs-writeback.c:1461
	 writeback_sb_inodes+0x53d/0xf40 fs/fs-writeback.c:1721
	 wb_writeback+0x2ad/0xd40 fs/fs-writeback.c:1894
	 wb_do_writeback fs/fs-writeback.c:2039 [inline]
	 wb_workfn+0x2dc/0x13e0 fs/fs-writeback.c:2080
	 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
	 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
	 kthread+0x3b5/0x4a0 kernel/kthread.c:292
	 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

  -> #3 (sb_internal#2){.+.+}-{0:0}:
	 percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
	 __sb_start_write+0x234/0x470 fs/super.c:1672
	 sb_start_intwrite include/linux/fs.h:1690 [inline]
	 start_transaction+0xbe7/0x1170 fs/btrfs/transaction.c:624
	 find_free_extent_update_loop fs/btrfs/extent-tree.c:3789 [inline]
	 find_free_extent+0x25e1/0x2e60 fs/btrfs/extent-tree.c:4127
	 btrfs_reserve_extent+0x166/0x460 fs/btrfs/extent-tree.c:4206
	 cow_file_range+0x3de/0x9b0 fs/btrfs/inode.c:1063
	 btrfs_run_delalloc_range+0x2cf/0x1410 fs/btrfs/inode.c:1838
	 writepage_delalloc+0x150/0x460 fs/btrfs/extent_io.c:3439
	 __extent_writepage+0x441/0xd00 fs/btrfs/extent_io.c:3653
	 extent_write_cache_pages.constprop.0+0x69d/0x1040 fs/btrfs/extent_io.c:4249
	 extent_writepages+0xcd/0x2b0 fs/btrfs/extent_io.c:4370
	 do_writepages+0xec/0x290 mm/page-writeback.c:2352
	 __writeback_single_inode+0x125/0x1400 fs/fs-writeback.c:1461
	 writeback_sb_inodes+0x53d/0xf40 fs/fs-writeback.c:1721
	 wb_writeback+0x2ad/0xd40 fs/fs-writeback.c:1894
	 wb_do_writeback fs/fs-writeback.c:2039 [inline]
	 wb_workfn+0x2dc/0x13e0 fs/fs-writeback.c:2080
	 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
	 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
	 kthread+0x3b5/0x4a0 kernel/kthread.c:292
	 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

  -> #2 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}:
	 __flush_work+0x60e/0xac0 kernel/workqueue.c:3041
	 wb_shutdown+0x180/0x220 mm/backing-dev.c:355
	 bdi_unregister+0x174/0x590 mm/backing-dev.c:872
	 del_gendisk+0x820/0xa10 block/genhd.c:933
	 loop_remove drivers/block/loop.c:2192 [inline]
	 loop_control_ioctl drivers/block/loop.c:2291 [inline]
	 loop_control_ioctl+0x3b1/0x480 drivers/block/loop.c:2257
	 vfs_ioctl fs/ioctl.c:48 [inline]
	 __do_sys_ioctl fs/ioctl.c:753 [inline]
	 __se_sys_ioctl fs/ioctl.c:739 [inline]
	 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
	 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
	 entry_SYSCALL_64_after_hwframe+0x44/0xa9

  -> #1 (loop_ctl_mutex){+.+.}-{3:3}:
	 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
	 __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
	 lo_open+0x19/0xd0 drivers/block/loop.c:1893
	 __blkdev_get+0x759/0x1aa0 fs/block_dev.c:1507
	 blkdev_get fs/block_dev.c:1639 [inline]
	 blkdev_open+0x227/0x300 fs/block_dev.c:1753
	 do_dentry_open+0x4b9/0x11b0 fs/open.c:817
	 do_open fs/namei.c:3251 [inline]
	 path_openat+0x1b9a/0x2730 fs/namei.c:3368
	 do_filp_open+0x17e/0x3c0 fs/namei.c:3395
	 do_sys_openat2+0x16d/0x420 fs/open.c:1168
	 do_sys_open fs/open.c:1184 [inline]
	 __do_sys_open fs/open.c:1192 [inline]
	 __se_sys_open fs/open.c:1188 [inline]
	 __x64_sys_open+0x119/0x1c0 fs/open.c:1188
	 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
	 entry_SYSCALL_64_after_hwframe+0x44/0xa9

  -> #0 (&bdev->bd_mutex){+.+.}-{3:3}:
	 check_prev_add kernel/locking/lockdep.c:2496 [inline]
	 check_prevs_add kernel/locking/lockdep.c:2601 [inline]
	 validate_chain kernel/locking/lockdep.c:3218 [inline]
	 __lock_acquire+0x2a96/0x5780 kernel/locking/lockdep.c:4426
	 lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006
	 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
	 __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
	 blkdev_put+0x30/0x520 fs/block_dev.c:1804
	 btrfs_close_bdev fs/btrfs/volumes.c:1117 [inline]
	 btrfs_close_bdev fs/btrfs/volumes.c:1107 [inline]
	 btrfs_close_one_device fs/btrfs/volumes.c:1133 [inline]
	 close_fs_devices.part.0+0x1a4/0x800 fs/btrfs/volumes.c:1161
	 close_fs_devices fs/btrfs/volumes.c:1193 [inline]
	 btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1179
	 close_ctree+0x688/0x6cb fs/btrfs/disk-io.c:4149
	 generic_shutdown_super+0x144/0x370 fs/super.c:464
	 kill_anon_super+0x36/0x60 fs/super.c:1108
	 btrfs_kill_super+0x38/0x50 fs/btrfs/super.c:2265
	 deactivate_locked_super+0x94/0x160 fs/super.c:335
	 deactivate_super+0xad/0xd0 fs/super.c:366
	 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118
	 task_work_run+0xdd/0x190 kernel/task_work.c:141
	 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
	 exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
	 exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:190
	 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:265
	 entry_SYSCALL_64_after_hwframe+0x44/0xa9

  other info that might help us debug this:

  Chain exists of:
    &bdev->bd_mutex --> sb_internal#2 --> &fs_devs->device_list_mutex

   Possible unsafe locking scenario:

	 CPU0                    CPU1
	 ----                    ----
    lock(&fs_devs->device_list_mutex);
				 lock(sb_internal#2);
				 lock(&fs_devs->device_list_mutex);
    lock(&bdev->bd_mutex);

   *** DEADLOCK ***

  3 locks held by syz-executor.0/6878:
   #0: ffff88809070c0e0 (&type->s_umount_key#70){++++}-{3:3}, at: deactivate_super+0xa5/0xd0 fs/super.c:365
   #1: ffffffff8a5b37a8 (uuid_mutex){+.+.}-{3:3}, at: btrfs_close_devices+0x23/0x1f0 fs/btrfs/volumes.c:1178
   #2: ffff8880908cfce0 (&fs_devs->device_list_mutex){+.+.}-{3:3}, at: close_fs_devices.part.0+0x2e/0x800 fs/btrfs/volumes.c:1159

  stack backtrace:
  CPU: 0 PID: 6878 Comm: syz-executor.0 Not tainted 5.9.0-rc5-syzkaller #0
  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
  Call Trace:
   __dump_stack lib/dump_stack.c:77 [inline]
   dump_stack+0x198/0x1fd lib/dump_stack.c:118
   check_noncircular+0x324/0x3e0 kernel/locking/lockdep.c:1827
   check_prev_add kernel/locking/lockdep.c:2496 [inline]
   check_prevs_add kernel/locking/lockdep.c:2601 [inline]
   validate_chain kernel/locking/lockdep.c:3218 [inline]
   __lock_acquire+0x2a96/0x5780 kernel/locking/lockdep.c:4426
   lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006
   __mutex_lock_common kernel/locking/mutex.c:956 [inline]
   __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
   blkdev_put+0x30/0x520 fs/block_dev.c:1804
   btrfs_close_bdev fs/btrfs/volumes.c:1117 [inline]
   btrfs_close_bdev fs/btrfs/volumes.c:1107 [inline]
   btrfs_close_one_device fs/btrfs/volumes.c:1133 [inline]
   close_fs_devices.part.0+0x1a4/0x800 fs/btrfs/volumes.c:1161
   close_fs_devices fs/btrfs/volumes.c:1193 [inline]
   btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1179
   close_ctree+0x688/0x6cb fs/btrfs/disk-io.c:4149
   generic_shutdown_super+0x144/0x370 fs/super.c:464
   kill_anon_super+0x36/0x60 fs/super.c:1108
   btrfs_kill_super+0x38/0x50 fs/btrfs/super.c:2265
   deactivate_locked_super+0x94/0x160 fs/super.c:335
   deactivate_super+0xad/0xd0 fs/super.c:366
   cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118
   task_work_run+0xdd/0x190 kernel/task_work.c:141
   tracehook_notify_resume include/linux/tracehook.h:188 [inline]
   exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
   exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:190
   syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:265
   entry_SYSCALL_64_after_hwframe+0x44/0xa9
  RIP: 0033:0x460027
  RSP: 002b:00007fff59216328 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
  RAX: 0000000000000000 RBX: 0000000000076035 RCX: 0000000000460027
  RDX: 0000000000403188 RSI: 0000000000000002 RDI: 00007fff592163d0
  RBP: 0000000000000333 R08: 0000000000000000 R09: 000000000000000b
  R10: 0000000000000005 R11: 0000000000000246 R12: 00007fff59217460
  R13: 0000000002df2a60 R14: 0000000000000000 R15: 00007fff59217460

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
[ add syzbot reference ]
Signed-off-by: David Sterba <dsterba@suse.com>
2020-09-30 19:34:24 +02:00
Ulf Hansson 1a67b9263e ARM: imx6q: Fixup RCU usage for cpuidle
The commit eb1f00237a ("lockdep,trace: Expose tracepoints"), started to
expose us for tracepoints. For imx6q cpuidle, this leads to an RCU splat
according to below.

[6.870684] [<c0db7690>] (_raw_spin_lock) from [<c011f6a4>] (imx6q_enter_wait+0x18/0x9c)
[6.878846] [<c011f6a4>] (imx6q_enter_wait) from [<c09abfb0>] (cpuidle_enter_state+0x168/0x5e4)

To fix the problem, let's assign the corresponding idlestate->flags the
CPUIDLE_FLAG_RCU_IDLE bit, which enables us to call rcu_idle_enter|exit()
at the proper point.

Reported-by: Dong Aisheng <aisheng.dong@nxp.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-09-30 17:42:43 +02:00
Yoann Congal eac53b3e30 Documentation: PM: Fix a reStructuredText syntax error
Fix a reStructuredText syntax error in the cpuidle PM admin-guide
documentation: the ``...'' quotation marks are parsed as partial ''...''
reStructuredText markup and break the output formatting.

This change them to "...".

Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-09-30 17:40:37 +02:00
Zhang Rui fc7d17551f cpufreq: intel_pstate: Fix missing return statement
Fix missing return statement when writing "off" to intel_pstate status
sysfs I/F.

Fixes: 55671ea325 ("cpufreq: intel_pstate: Free memory only when turning off")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-09-30 17:37:23 +02:00
Jiansong Chen 95433a1305 drm/amdgpu: disable gfxoff temporarily for navy_flounder
gfxoff is temporarily disabled for navy_flounder, since
at present the feature caused some tdr when performing
display operations.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-09-30 09:47:43 -04:00