Commit Graph

534833 Commits

Author SHA1 Message Date
Linus Torvalds e9ab22d292 Merge branch 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fix from Tejun Heo:
 "A fix for a subtle bug introduced back during 3.17 cycle which
  interferes with setting configurations under specific conditions"

* 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: use trialcs->mems_allowed as a temp variable
2015-08-17 16:15:26 -07:00
Linus Torvalds a36304b9e1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - a regression caused by the conversion of IPsec ESP to the new AEAD
     interface: ESN with authencesn no longer works because it relied on
     the AD input SG list having a specific layout which is no longer
     the case.  In linux-next authencesn is fixed properly and no longer
     assumes anything about the SG list format.  While for this release
     a minimal fix is applied to authencesn so that it works with the
     new linear layout.

   - fix memory corruption caused by bogus index in the caam hash code.

   - fix powerpc nx SHA hashing which could cause module load failures
     if module signature verification is enabled"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: caam - fix memory corruption in ahash_final_ctx
  crypto: nx - respect sg limit bounds when building sg lists for SHA
  crypto: authencesn - Fix breakage with new ESP code
2015-08-17 07:57:46 -07:00
Linus Torvalds 2c6625cd54 Linux 4.2-rc7 2015-08-16 16:34:13 -07:00
Linus Torvalds 8916e0b03e ARM: SoC fixes
A smallish batch of fixes, a little more than expected this late, but
 all fixes are contained to their platforms and seem reasonably low risk:
 
 - A somewhat large SMP fix for ux500 that still seemed warranted to include here
 - OMAP DT fixes for pbias regulator specification that broke due to some DT
   reshuffling
 - PCIe IRQ routing bugfix for i.MX
 - Networking fixes for keystone
 - Runtime PM for OMAP GPMC
 - A couple of error path bug fixes for exynos
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJV0OYvAAoJEIwa5zzehBx3KjMP/iqazSkZERCSIQ/SQYsy+tdr
 xBKjHlz4mUuEMHtRx5Ro+IZRhTxZRsD6FR5Kiy435ipDFRAk+cObRhJMsPyfCybA
 40UN6WyZP0CKvlvYuxoeEWfDw+G1gRIDunfpz+d9E5JjDESyPbGvnoNiuZT1LmEC
 zo80U5DorU5Dmu/wWkzF+7UN8YRCC7oEykujltZ73UXH4BnYfcyRvav3HGkx2gV8
 gB1j30geoOAHGOasNBFMHGMtTf8lv/6g6KtR5tVVJ+jkT1dmz6D1z45cMVbCZtal
 uwbyX0cr2FhIY6U9Wb2yXVX9YOhJbnmyyafE+SQmFi6cebsmP4aZeqK2r98Tx1JD
 xWqrzJbMkD+qKRCrsK2D3Jbt6pmxRr90c+yemR0Cfntp6ybby/qPdJiNDLuEVorf
 LD1yuOLn4Jiejkf5bLxgYIjGbPWMtiN0OfmkEKmz8QuJx95M1pQkr/k7WeoyNEYi
 2ymh7n76doF8NVyXH9TWSMyaFivDVxCtyC7/as4Ob17w2fst7LrJq3JlXNfdFjkD
 cuq5SPp5Zpe/UVS/iivDTnFV/yGDkwERT9zO6Zqorfkb0A52OyhbMDZyZ75n5iHs
 /OSJbxMmPWyiN03CP4JBYmDlSF3ITvb0QTYZfpt5/eiQlPfgt91Ig7vj0lievkvo
 P/xww2UdUKEM9GEkYxpz
 =Auuc
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A smallish batch of fixes, a little more than expected this late, but
  all fixes are contained to their platforms and seem reasonably low
  risk:

   - a somewhat large SMP fix for ux500 that still seemed warranted to
     include here
   - OMAP DT fixes for pbias regulator specification that broke due to
     some DT reshuffling
   - PCIe IRQ routing bugfix for i.MX
   - networking fixes for keystone
   - runtime PM for OMAP GPMC
   - a couple of error path bug fixes for exynos"

* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: keystone: Fix the mdio bindings by moving it to soc specific file
  ARM: dts: keystone: fix the clock node for mdio
  memory: omap-gpmc: Don't try to save uninitialized GPMC context
  ARM: imx6: correct i.MX6 PCIe interrupt routing
  ARM: ux500: add an SMP enablement type and move cpu nodes
  ARM: dts: dra7: Fix broken pbias device creation
  ARM: dts: OMAP5: Fix broken pbias device creation
  ARM: dts: OMAP4: Fix broken pbias device creation
  ARM: dts: omap243x: Fix broken pbias device creation
  ARM: EXYNOS: fix double of_node_put() on error path
  ARM: EXYNOS: Fix potentian kfree() of ro memory
2015-08-16 15:44:33 -07:00
Linus Torvalds 0f405bf75f Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS bugfix from Ralf Baechle:
 "Only a single MIPS fix - the math when invoking syscall_trace_enter
  was wrong"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Fix seccomp syscall argument for MIPS64
2015-08-16 15:39:31 -07:00
Linus Torvalds 01565479e9 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Merge x86 fixes from Ingo Molnar:
 "Two followup fixes related to the previous LDT fix"

Also applied a further FPU emulation fix from Andy Lutomirski to the
branch before actually merging it.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
  x86/ldt: Further fix FPU emulation
  x86/ldt: Correct FPU emulation access to LDT
  x86/ldt: Correct LDT access in single stepping logic
2015-08-16 15:11:25 -07:00
Andy Lutomirski 12e244f4b5 x86/ldt: Further fix FPU emulation
The previous fix confused a selector with a segment prefix.  Fix it.

Compile-tested only.

Cc: stable@vger.kernel.org
Cc: Juergen Gross <jgross@suse.com>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 4809146b86 ("x86/ldt: Correct FPU emulation access to LDT")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-16 15:11:05 -07:00
Jann Horn 8ed1f0e22f fs/fuse: fix ioctl type confusion
fuse_dev_ioctl() performed fuse_get_dev() on a user-supplied fd,
leading to a type confusion issue. Fix it by checking file->f_op.

Signed-off-by: Jann Horn <jann@thejh.net>
Acked-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-16 12:35:44 -07:00
Olof Johansson 02149517ac ARM: Couple of Keysyone MDIO DTS fixes for 4.2-rc6+
These are necessary to get the NIC card working on all Keystone
 EVMs. Couple of boards are nroken without these two fixes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVzNC6AAoJEHJsHOdBp5c/kKcQAMAJppV27q/LJ/raMqBQ8spe
 dbUAiOidAXa62Qv8ZYj4N5IOb3coBhRb5OF2i8XGGCIQdaLWDogTeQZegYJkfQEm
 RVx+1O8HAHpiuHwyrHPR0RosjQZ1CN+9u5ldR1hD8SBny843iXGkKlBlkyZrJDi0
 NQdOCp348CQsqykMXprk11aVgkcNcWE+b4M21D9AGogWhwKsPX/hUwlioxrdRips
 I2lD16rmQVEVhzuYfD+a3iDjf23t9Ppk2/OCpjxx2+rV0dZW0PKDzygX6fIpgql1
 e2Qr46c6f8OIXbDgSZZFlYJHjUiWhJCmeEa1T/v87gpxQsvQzb5Pi3HobkgKcA91
 BmnH6k5o2XHyN348F60ovXul+W15y1/EwAVAHfhiJS7Md3k7gqzDk9IcKm+pDEGg
 otD2ftyTTeSxQsTptz153y0pPMb2bJMzOOCiyUs5qQ4aw/tYuUGG/gxQvw+AWDCF
 2f3iQf5BNEBj43MBbrRaZGMHlgwudaIHsR8BHuC/4yaUqoYl5bvQL+PJ7cJavTSQ
 Sl/I8NFgDJdb0c50cUeLNo+gGVYooe2jIsnepLNXSZf1FYhM8em/QnCsrs+cBfZ9
 O8+TXmClJfKiuEnxppvyDAPndgI8FcIsJ6R6qPeih+pS2y4qtkU0f3QYtzOpcf7X
 c553a1ijJMz26NalRSkg
 =R5Tu
 -----END PGP SIGNATURE-----

Merge tag 'keystone-dts-late-fixes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into fixes

ARM: Couple of Keysyone MDIO DTS fixes for 4.2-rc6+

These are necessary to get the NIC card working on all Keystone
EVMs. Couple of boards are broken without these two fixes.

* tag 'keystone-dts-late-fixes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  ARM: dts: keystone: Fix the mdio bindings by moving it to soc specific file
  ARM: dts: keystone: fix the clock node for mdio

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-08-16 21:29:57 +02:00
Markos Chandras 9f161439e4 MIPS: Fix seccomp syscall argument for MIPS64
Commit 4c21b8fd8f ("MIPS: seccomp: Handle indirect system calls (o32)")
fixed indirect system calls on O32 but it also introduced a bug for MIPS64
where it erroneously modified the v0 (syscall) register with the assumption
that the sycall offset hasn't been taken into consideration. This breaks
seccomp on MIPS64 n64 and n32 ABIs. We fix this by replacing the addition
with a move instruction.

Fixes: 4c21b8fd8f ("MIPS: seccomp: Handle indirect system calls (o32)")
Cc: <stable@vger.kernel.org> # 3.15+
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10951/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-08-16 15:00:59 +02:00
Linus Torvalds 1efdb5f0a9 SCSI fixes on 20150814
This patch consists of 2 libfc fixes causing rare crashes, one iscsi one
 causing a potential hang on shutdown, an I/O blocksize issue which caused a
 regression and a memory leak in scsi-mq.
 
 Signed-off-by: James Bottomley <JBottomley@Odin.com>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQEcBAABAgAGBQJVzsOiAAoJEDeqqVYsXL0M4wQIAIUe1SGv66OcAQLBcxxJUL2T
 i+Ph2RE/er1iyzJepN56i77Mn2hnBgnQtmB/ibnjQfUsz/zo5PANjIfy+eFcG53G
 qcb8l7a/BFCH3JHWXL7rJYN9G64sirADDL6SDLpX1JFsL21bAGdcEgbmefysvDmr
 qFkiGH0Ty9YH58W+6j1pzQhh437rRgcM1KuY08sJsbKmyCVdzG5ketzBkONmBcTh
 OTfPQjL32L4KR3THDUbpCiK6YAUtDvHjVB51lwoiB1ER7Ke+E+nqlCuxhXvZfMoD
 lGfvWgwaQnoN1fun6c85zcqnl72kymropWWiJUhhPPjeZEj8sgn/eaaAAST9mlQ=
 =Fztd
 -----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:
 "This has two libfc fixes for bugs causing rare crashes, one iscsi fix
  for a potential hang on shutdown, and a fix for an I/O blocksize issue
  which caused a regression"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  sd: Fix maximum I/O size for BLOCK_PC requests
  libfc: Fix fc_fcp_cleanup_each_cmd()
  libfc: Fix fc_exch_recv_req() error path
  libiscsi: Fix host busy blocking during connection teardown
2015-08-15 13:54:53 -07:00
Linus Torvalds 45e38cff4f Just two very small & simple patches.
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJVzmylAAoJEL/70l94x66D7r0IAKd8oclVTdbo8RxR1Hg2zZev
 ytTm2Mjd0kgSqhTaBBUgyE900/cznYpT1xJq1/5Wwc+FP1J1QBzsDemtrQlEZIBh
 Zi4b7zm37K1ai7xWs6oLaXieVjiyX8vuUGO6saBw1n/ZLURgPjVzTmQMxdnYtyFX
 yf37rPvksnyzyctv+D9ZvdhrpD7Xd3NFNoCOSiukkeZkjb97JabDRrzpTlVmj4wu
 KNReYCN+iA6jZe5tEZHzCGplVrEMfHdAcoRc3GVz3oecPVZojX/NLzwlw97iN/2z
 mm5SVOlxbvCO7sqEQXo/db91xlP3E6Q1QGuDE21NboClbNeinC/uFJMFzpVInSI=
 =AD69
 -----END PGP SIGNATURE-----

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

Pull KVM fixes from Paolo Bonzini:
 "Just two very small & simple patches"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Use adjustment in guest cycles when handling MSR_IA32_TSC_ADJUST
  KVM: x86: zero IDT limit on entry to SMM
2015-08-14 17:27:52 -07:00
Linus Torvalds 8394a1b715 Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
 "11 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  Update maintainers for DRM STI driver
  mm: cma: mark cma_bitmap_maxno() inline in header
  zram: fix pool name truncation
  memory-hotplug: fix wrong edge when hot add a new node
  .mailmap: Andrey Ryabinin has moved
  ipc/sem.c: update/correct memory barriers
  mm/hwpoison: fix panic due to split huge zero page
  ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()
  ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits
  mm/hwpoison: fix fail isolate hugetlbfs page w/ refcount held
  mm/hwpoison: fix page refcount of unknown non LRU page
2015-08-14 17:05:26 -07:00
Linus Torvalds fbd9163f1c A one-liner for a regression found in the PXA clock driver.
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABCAAGBQJVzaGHAAoJENidgRMleOc9uB8P/iN9CqXSo2HpgP4jRsAmPLgN
 G0INkr1eS4qEPEtCNFSZ1mH/lspqOCvAxyEL4peLng5BeK5NypDrs6aUFbRKhVzT
 FP8SSZzzf3pj6FDnUZVUR5z5ts296Wrcr7TY8PxhRsyp9UxnPuycovDCO/8O+ffB
 s88TuyNxfkvVxdSPdZhHWQ9RfNO/mZ85fJM6lGUm1llW3RWeqybhYIzRFYxa1fc2
 BZGg42HVu5oMFNMiZ21NyFebLrIh0h+HABsIBXFJPZ4lXwn/rXBrkzS/6lvXJ1g/
 FTyAW+RYR5vlP8eLawANTxLPctLPv/v1KjLbDyqE3CNyJOPuWbsdmvBfSefGm42m
 HoDsIyNd3WESJgicBOEoz5w0gsBIyF2c/zlHpmk2zNKqDIdmI3OE+fE8vOivq1zG
 DWJG98jUn3eHoBNUHXZMzZ10EVb+JEndjcyU0KqLk8FZC6fidDI2FEvW0cWMpPGa
 ytwiQS9VoImMruHMOEY1vSXtyGD0Ht+ZNryX2JISFvzTr6SOn77BXt+Ph01uyElE
 2cBqgabrH67dtfO04oN77lHOPy2/AwHhMHB+n6NdldSUlQenfeZpMNCVBIk5ugES
 IMMM7pWKBeMbYGPv4urXgg+xU0h2/aMRtW8nB7uA+ESZ4+oAfZeHIG+C7smlSbk/
 sIx7JiOc1si+dN0Xnr10
 =IHq6
 -----END PGP SIGNATURE-----

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

Pull clock fix from Stephen Boyd:
 "A one-liner for a regression found in the PXA clock driver"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: pxa: pxa3xx: fix CKEN register access
2015-08-14 16:10:04 -07:00
Benjamin Gaignard 7f11c47605 Update maintainers for DRM STI driver
Add Vincent Abriou and myself as maintainers.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Gregory Fong f21838e056 mm: cma: mark cma_bitmap_maxno() inline in header
cma_bitmap_maxno() was marked as static and not static inline, which can
cause warnings about this function not being used if this file is included
in a file that does not call that function, and violates the conventions
used elsewhere.  The two options are to move the function implementation
back to mm/cma.c or make it inline here, and it's simple enough for the
latter to make sense.

Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Sergey Senozhatsky 4ce321f574 zram: fix pool name truncation
zram_meta_alloc() constructs a pool name for zs_create_pool() call as

    snprintf(pool_name, sizeof(pool_name), "zram%d", device_id);

However, it defines pool name buffer to be only 8 bytes long (minus
trailing zero), which means that we can have only 1000 pool names: zram0
-- zram999.

With CONFIG_ZSMALLOC_STAT enabled an attempt to create a device zram1000
can fail if device zram100 already exists, because snprintf() will
truncate new pool name to zram100 and pass it debugfs_create_dir(),
causing:

  debugfs dir <zram100> creation failed
  zram: Error creating memory pool

... and so on.

Fix it by passing zram->disk->disk_name to zram_meta_alloc() instead of
divice_id.  We construct zram%d name earlier and keep it as a ->disk_name,
no need to snprintf() it again.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Xishi Qiu f9126ab924 memory-hotplug: fix wrong edge when hot add a new node
When we add a new node, the edge of memory may be wrong.

e.g. system has 4 nodes, and node3 is movable, node3 mem:[24G-32G],

1. hotremove the node3,
2. then hotadd node3 with a part of memory, mem:[26G-30G],
3. call hotadd_new_pgdat()
        free_area_init_node()
                get_pfn_range_for_nid()
4. it will return wrong start_pfn and end_pfn, because we have not
update the memblock.

This patch also fixes a BUG_ON during hot-addition, please see
http://marc.info/?l=linux-kernel&m=142961156129456&w=2

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Andrey Ryabinin 2baf9e8948 .mailmap: Andrey Ryabinin has moved
Update my email address.

Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Manfred Spraul 3ed1f8a99d ipc/sem.c: update/correct memory barriers
sem_lock() did not properly pair memory barriers:

!spin_is_locked() and spin_unlock_wait() are both only control barriers.
The code needs an acquire barrier, otherwise the cpu might perform read
operations before the lock test.

As no primitive exists inside <include/spinlock.h> and since it seems
noone wants another primitive, the code creates a local primitive within
ipc/sem.c.

With regards to -stable:

The change of sem_wait_array() is a bugfix, the change to sem_lock() is a
nop (just a preprocessor redefinition to improve the readability).  The
bugfix is necessary for all kernels that use sem_wait_array() (i.e.:
starting from 3.10).

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Reported-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Kirill Tkhai <ktkhai@parallels.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: <stable@vger.kernel.org>	[3.10+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Wanpeng Li 7f6bf39bbd mm/hwpoison: fix panic due to split huge zero page
Bug:

  ------------[ cut here ]------------
  kernel BUG at mm/huge_memory.c:1957!
  invalid opcode: 0000 [#1] SMP
  Modules linked in: snd_hda_codec_hdmi i915 rpcsec_gss_krb5 snd_hda_codec_realtek snd_hda_codec_generic nfsv4 dns_re
  CPU: 2 PID: 2576 Comm: test_huge Not tainted 4.2.0-rc5-mm1+ #27
  Hardware name: Dell Inc. OptiPlex 7020/0F5C5X, BIOS A03 01/08/2015
  task: ffff880204e3d600 ti: ffff8800db16c000 task.ti: ffff8800db16c000
  RIP: split_huge_page_to_list+0xdb/0x120
  Call Trace:
    memory_failure+0x32e/0x7c0
    madvise_hwpoison+0x8b/0x160
    SyS_madvise+0x40/0x240
    ? do_page_fault+0x37/0x90
    entry_SYSCALL_64_fastpath+0x12/0x71
  Code: ff f0 41 ff 4c 24 30 74 0d 31 c0 48 83 c4 08 5b 41 5c 41 5d c9 c3 4c 89 e7 e8 e2 58 fd ff 48 83 c4 08 31 c0
  RIP  split_huge_page_to_list+0xdb/0x120
   RSP <ffff8800db16fde8>
  ---[ end trace aee7ce0df8e44076 ]---

Testcase:

    #define _GNU_SOURCE
    #include <stdlib.h>
    #include <stdio.h>
    #include <sys/mman.h>
    #include <unistd.h>
    #include <fcntl.h>
    #include <sys/types.h>
    #include <errno.h>
    #include <string.h>

    #define MB 1024*1024

    int main(void)
    {
            char *mem;

            posix_memalign((void **)&mem, 2 * MB, 200 * MB);

            madvise(mem, 200 * MB, MADV_HWPOISON);

            free(mem);

            return 0;
    }

Huge zero page is allocated if page fault w/o FAULT_FLAG_WRITE flag.
The get_user_pages_fast() which called in madvise_hwpoison() will get
huge zero page if the page is not allocated before.  Huge zero page is a
tranparent huge page, however, it is not an anonymous page.
memory_failure will split the huge zero page and trigger
BUG_ON(is_huge_zero_page(page));

After commit 98ed2b0052 ("mm/memory-failure: give up error handling
for non-tail-refcounted thp"), memory_failure will not catch non anon
thp from madvise_hwpoison path and this bug occur.

Fix it by catching non anon thp in memory_failure in order to not split
huge zero page in madvise_hwpoison path.

After this patch:

  Injecting memory failure for page 0x202800 at 0x7fd8ae800000
  MCE: 0x202800: non anonymous thp
  [...]

[akpm@linux-foundation.org: remove second split, per Wanpeng]
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Herton R. Krzesinski a979558448 ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()
After we acquire the sma->sem_perm lock in exit_sem(), we are protected
against a racing IPC_RMID operation.  Also at that point, we are the last
user of sem_undo_list.  Therefore it isn't required that we acquire or use
ulp->lock.

Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Rafael Aquini <aquini@redhat.com>
CC: Aristeu Rozanski <aris@redhat.com>
Cc: David Jeffery <djeffery@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Herton R. Krzesinski 602b8593d2 ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits
The current semaphore code allows a potential use after free: in
exit_sem we may free the task's sem_undo_list while there is still
another task looping through the same semaphore set and cleaning the
sem_undo list at freeary function (the task called IPC_RMID for the same
semaphore set).

For example, with a test program [1] running which keeps forking a lot
of processes (which then do a semop call with SEM_UNDO flag), and with
the parent right after removing the semaphore set with IPC_RMID, and a
kernel built with CONFIG_SLAB, CONFIG_SLAB_DEBUG and
CONFIG_DEBUG_SPINLOCK, you can easily see something like the following
in the kernel log:

   Slab corruption (Not tainted): kmalloc-64 start=ffff88003b45c1c0, len=64
   000: 6b 6b 6b 6b 6b 6b 6b 6b 00 6b 6b 6b 6b 6b 6b 6b  kkkkkkkk.kkkkkkk
   010: ff ff ff ff 6b 6b 6b 6b ff ff ff ff ff ff ff ff  ....kkkk........
   Prev obj: start=ffff88003b45c180, len=64
   000: 00 00 00 00 ad 4e ad de ff ff ff ff 5a 5a 5a 5a  .....N......ZZZZ
   010: ff ff ff ff ff ff ff ff c0 fb 01 37 00 88 ff ff  ...........7....
   Next obj: start=ffff88003b45c200, len=64
   000: 00 00 00 00 ad 4e ad de ff ff ff ff 5a 5a 5a 5a  .....N......ZZZZ
   010: ff ff ff ff ff ff ff ff 68 29 a7 3c 00 88 ff ff  ........h).<....
   BUG: spinlock wrong CPU on CPU#2, test/18028
   general protection fault: 0000 [#1] SMP
   Modules linked in: 8021q mrp garp stp llc nf_conntrack_ipv4 nf_defrag_ipv4 ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables binfmt_misc ppdev input_leds joydev parport_pc parport floppy serio_raw virtio_balloon virtio_rng virtio_console virtio_net iosf_mbi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcspkr qxl ttm drm_kms_helper drm snd_hda_codec_generic i2c_piix4 snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore crc32c_intel virtio_pci virtio_ring virtio pata_acpi ata_generic [last unloaded: speedstep_lib]
   CPU: 2 PID: 18028 Comm: test Not tainted 4.2.0-rc5+ #1
   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014
   RIP: spin_dump+0x53/0xc0
   Call Trace:
     spin_bug+0x30/0x40
     do_raw_spin_unlock+0x71/0xa0
     _raw_spin_unlock+0xe/0x10
     freeary+0x82/0x2a0
     ? _raw_spin_lock+0xe/0x10
     semctl_down.clone.0+0xce/0x160
     ? __do_page_fault+0x19a/0x430
     ? __audit_syscall_entry+0xa8/0x100
     SyS_semctl+0x236/0x2c0
     ? syscall_trace_leave+0xde/0x130
     entry_SYSCALL_64_fastpath+0x12/0x71
   Code: 8b 80 88 03 00 00 48 8d 88 60 05 00 00 48 c7 c7 a0 2c a4 81 31 c0 65 8b 15 eb 40 f3 7e e8 08 31 68 00 4d 85 e4 44 8b 4b 08 74 5e <45> 8b 84 24 88 03 00 00 49 8d 8c 24 60 05 00 00 8b 53 04 48 89
   RIP  [<ffffffff810d6053>] spin_dump+0x53/0xc0
    RSP <ffff88003750fd68>
   ---[ end trace 783ebb76612867a0 ]---
   NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [test:18053]
   Modules linked in: 8021q mrp garp stp llc nf_conntrack_ipv4 nf_defrag_ipv4 ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables binfmt_misc ppdev input_leds joydev parport_pc parport floppy serio_raw virtio_balloon virtio_rng virtio_console virtio_net iosf_mbi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcspkr qxl ttm drm_kms_helper drm snd_hda_codec_generic i2c_piix4 snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore crc32c_intel virtio_pci virtio_ring virtio pata_acpi ata_generic [last unloaded: speedstep_lib]
   CPU: 3 PID: 18053 Comm: test Tainted: G      D         4.2.0-rc5+ #1
   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014
   RIP: native_read_tsc+0x0/0x20
   Call Trace:
     ? delay_tsc+0x40/0x70
     __delay+0xf/0x20
     do_raw_spin_lock+0x96/0x140
     _raw_spin_lock+0xe/0x10
     sem_lock_and_putref+0x11/0x70
     SYSC_semtimedop+0x7bf/0x960
     ? handle_mm_fault+0xbf6/0x1880
     ? dequeue_task_fair+0x79/0x4a0
     ? __do_page_fault+0x19a/0x430
     ? kfree_debugcheck+0x16/0x40
     ? __do_page_fault+0x19a/0x430
     ? __audit_syscall_entry+0xa8/0x100
     ? do_audit_syscall_entry+0x66/0x70
     ? syscall_trace_enter_phase1+0x139/0x160
     SyS_semtimedop+0xe/0x10
     SyS_semop+0x10/0x20
     entry_SYSCALL_64_fastpath+0x12/0x71
   Code: 47 10 83 e8 01 85 c0 89 47 10 75 08 65 48 89 3d 1f 74 ff 7e c9 c3 0f 1f 44 00 00 55 48 89 e5 e8 87 17 04 00 66 90 c9 c3 0f 1f 00 <55> 48 89 e5 0f 31 89 c1 48 89 d0 48 c1 e0 20 89 c9 48 09 c8 c9
   Kernel panic - not syncing: softlockup: hung tasks

I wasn't able to trigger any badness on a recent kernel without the
proper config debugs enabled, however I have softlockup reports on some
kernel versions, in the semaphore code, which are similar as above (the
scenario is seen on some servers running IBM DB2 which uses semaphore
syscalls).

The patch here fixes the race against freeary, by acquiring or waiting
on the sem_undo_list lock as necessary (exit_sem can race with freeary,
while freeary sets un->semid to -1 and removes the same sem_undo from
list_proc or when it removes the last sem_undo).

After the patch I'm unable to reproduce the problem using the test case
[1].

[1] Test case used below:

    #include <stdio.h>
    #include <sys/types.h>
    #include <sys/ipc.h>
    #include <sys/sem.h>
    #include <sys/wait.h>
    #include <stdlib.h>
    #include <time.h>
    #include <unistd.h>
    #include <errno.h>

    #define NSEM 1
    #define NSET 5

    int sid[NSET];

    void thread()
    {
            struct sembuf op;
            int s;
            uid_t pid = getuid();

            s = rand() % NSET;
            op.sem_num = pid % NSEM;
            op.sem_op = 1;
            op.sem_flg = SEM_UNDO;

            semop(sid[s], &op, 1);
            exit(EXIT_SUCCESS);
    }

    void create_set()
    {
            int i, j;
            pid_t p;
            union {
                    int val;
                    struct semid_ds *buf;
                    unsigned short int *array;
                    struct seminfo *__buf;
            } un;

            /* Create and initialize semaphore set */
            for (i = 0; i < NSET; i++) {
                    sid[i] = semget(IPC_PRIVATE , NSEM, 0644 | IPC_CREAT);
                    if (sid[i] < 0) {
                            perror("semget");
                            exit(EXIT_FAILURE);
                    }
            }
            un.val = 0;
            for (i = 0; i < NSET; i++) {
                    for (j = 0; j < NSEM; j++) {
                            if (semctl(sid[i], j, SETVAL, un) < 0)
                                    perror("semctl");
                    }
            }

            /* Launch threads that operate on semaphore set */
            for (i = 0; i < NSEM * NSET * NSET; i++) {
                    p = fork();
                    if (p < 0)
                            perror("fork");
                    if (p == 0)
                            thread();
            }

            /* Free semaphore set */
            for (i = 0; i < NSET; i++) {
                    if (semctl(sid[i], NSEM, IPC_RMID))
                            perror("IPC_RMID");
            }

            /* Wait for forked processes to exit */
            while (wait(NULL)) {
                    if (errno == ECHILD)
                            break;
            };
    }

    int main(int argc, char **argv)
    {
            pid_t p;

            srand(time(NULL));

            while (1) {
                    p = fork();
                    if (p < 0) {
                            perror("fork");
                            exit(EXIT_FAILURE);
                    }
                    if (p == 0) {
                            create_set();
                            goto end;
                    }

                    /* Wait for forked processes to exit */
                    while (wait(NULL)) {
                            if (errno == ECHILD)
                                    break;
                    };
            }
    end:
            return 0;
    }

[akpm@linux-foundation.org: use normal comment layout]
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Rafael Aquini <aquini@redhat.com>
CC: Aristeu Rozanski <aris@redhat.com>
Cc: David Jeffery <djeffery@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Wanpeng Li 036138080a mm/hwpoison: fix fail isolate hugetlbfs page w/ refcount held
Hugetlbfs pages will get a refcount in get_any_page() or
madvise_hwpoison() if soft offlining through madvise.  The refcount which
is held by the soft offline path should be released if we fail to isolate
hugetlbfs pages.

Fix it by reducing the refcount for both isolation success and failure.

Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org>	[3.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Wanpeng Li 4f32be677b mm/hwpoison: fix page refcount of unknown non LRU page
After trying to drain pages from pagevec/pageset, we try to get reference
count of the page again, however, the reference count of the page is not
reduced if the page is still not on LRU list.

Fix it by adding the put_page() to drop the page reference which is from
__get_any_page().

Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org>	[3.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-14 15:56:32 -07:00
Linus Torvalds 3670901f73 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
 "A single clocksource driver suspend/resume fix"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevents/drivers/sh_cmt: Only perform clocksource suspend/resume if enabled
2015-08-14 11:06:43 -07:00
Linus Torvalds b25c6cee55 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Misc fixes: PMU driver corner cases, tooling fixes, and an 'AUX'
  (Intel PT) race related core fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/cqm: Do not access cpu_data() from CPU_UP_PREPARE handler
  perf/x86/intel: Fix memory leak on hot-plug allocation fail
  perf: Fix PERF_EVENT_IOC_PERIOD migration race
  perf: Fix double-free of the AUX buffer
  perf: Fix fasync handling on inherited events
  perf tools: Fix test build error when bindir contains double slash
  perf stat: Fix transaction lenght metrics
  perf: Fix running time accounting
2015-08-14 10:57:16 -07:00
Linus Torvalds 5e5013c6b5 Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
 "A single fix for a locking self-test crash"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/pvqspinlock: Fix kernel panic in locking-selftest
2015-08-14 10:45:23 -07:00
Linus Torvalds c679765416 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Back from holidays, found these in the cracks: one nouveau revert, one
  vmwgfx locking fix and a bunch of exynos fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  Revert "drm/nouveau/fifo/gk104: kick channels when deactivating them"
  drm/vmwgfx: Fix execbuf locking issues
  drm/exynos/fimc: fix runtime pm support
  drm/exynos/mixer: always update INT_EN cache
  drm/exynos/mixer: correct vsync configuration sequence
  drm/exynos/mixer: fix interrupt clearing
  drm/exynos/hdmi: fix edid memory leak
  drm/exynos: gsc: fix wrong bitwise operation for swap detection
2015-08-14 10:39:32 -07:00
Alexandre Courbot d211d87e14 Revert "drm/nouveau/fifo/gk104: kick channels when deactivating them"
This reverts commit 1addc12648

This commit seems to cause crashes in gk104_fifo_intr_runlist() by
returning 0xbad0da00 when register 0x2a00 is read. Since this commit was
intended for GM20B which is not completely supported yet, let's revert
it for the time being.

Reported-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Afzal Mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-14 09:50:37 +10:00
Thomas Hellstrom 3e04e2fe6d drm/vmwgfx: Fix execbuf locking issues
This addresses two issues that cause problems with viewperf maya-03 in
situation with memory pressure.

The first issue causes attempts to unreserve buffers if batched
reservation fails due to, for example, a signal pending. While previously
the ttm_eu api was resistant against this type of error, it is no longer
and the lockdep code will complain about attempting to unreserve buffers
that are not reserved. The issue is resolved by avoid calling
ttm_eu_backoff_reservation in the buffer reserve error path.

The second issue is that the binding_mutex may be held when user-space
fence objects are created and hence during memory reclaims. This may cause
recursive attempts to grab the binding mutex. The issue is resolved by not
holding the binding mutex across fence creation and submission.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-14 09:49:19 +10:00
Dave Airlie 3c6d45b417 Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
This pull request fixes memory leak and some issues related to
   mixer and gscaler driver issues.

* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos/fimc: fix runtime pm support
  drm/exynos/mixer: always update INT_EN cache
  drm/exynos/mixer: correct vsync configuration sequence
  drm/exynos/mixer: fix interrupt clearing
  drm/exynos/hdmi: fix edid memory leak
  drm/exynos: gsc: fix wrong bitwise operation for swap detection
2015-08-14 09:47:07 +10:00
Linus Torvalds 7ddab73346 Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "Another few small ARM fixes, mostly addressing some VDSO issues"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8410/1: VDSO: fix coarse clock monotonicity regression
  ARM: 8409/1: Mark ret_fast_syscall as a function
  ARM: 8408/1: Fix the secondary_startup function in Big Endian case
  ARM: 8405/1: VDSO: fix regression with toolchains lacking ld.bfd executable
2015-08-13 16:34:56 -07:00
Linus Torvalds cd88ec2317 x86: fix error handling for 32-bit compat out-of-range system call numbers
Commit 3f5159a922 ("x86/asm/entry/32: Update -ENOSYS handling to match
the 64-bit logic") broke the ENOSYS handling for the 32-bit compat case.
The proper error return value was never loaded into %rax, except if
things just happened to go through the audit paths, which ended up
reloading the return value.

This moves the loading or %rax into the normal system call path, just to
make sure the error case triggers it.  It's kind of sad, since it adds a
useless instruction to reload the register to the fast path, but it's
not like that single load from the stack is going to be noticeable.

Reported-by: David Drysdale <drysdale@google.com>
Tested-by: Kees Cook <keescook@chromium.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-13 16:19:44 -07:00
Linus Torvalds 5b3e2e14ea - two stable fixes for corruption seen in a snapshot of thinp metadata;
metadata snapshots aren't widely used but help provide a consistent
   view of the metadata associated with an active thin-pool.
 
 - a dm-cache fix for the 4.2 "default" policy switch from "mq" to "smq"
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJVzPl/AAoJEMUj8QotnQNa2MUH/24BKs8WYNy79B9pr6H41ouQ
 LAXFVfx3Vy7n3U1KrZcPylXb7R0feXphUrSXJ6ZlKz/Df+AhG5ycUOCfSZxSDpA9
 pX5rtWFSWLXGF3wRf0GXqB3CXkrMKlNWVAUlzge39TpIzpdkbh9reM9He4yQphl9
 u0QVvIOTQsUrtN9htnQb7Dgmm7qD6NinrebOrWTiOqBdCh3Iw4J48RsYggYOG0ZP
 fbMnpZlH537vgLyKaz72Xh+kMrYmP5DBd1f+iAUBVKk12HQVQNMzEwOgkEB0M+4l
 EG3c4O3zMVrBxXdxsI2srFZfLX2XeUYAuMx8cfVSSCDEzQwjC0kmXVdkCYuAjAk=
 =r/53
 -----END PGP SIGNATURE-----

Merge tag 'dm-4.2-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - two stable fixes for corruption seen in a snapshot of thinp metadata;
   metadata snapshots aren't widely used but help provide a consistent
   view of the metadata associated with an active thin-pool.

 - a dm-cache fix for the 4.2 "default" policy switch from "mq" to "smq"

* tag 'dm-4.2-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm cache policy smq: move 'dm-cache-default' module alias to SMQ
  dm btree: add ref counting ops for the leaves of top level btrees
  dm thin metadata: delete btrees when releasing metadata snapshot
2015-08-13 13:52:46 -07:00
Linus Torvalds ebcbf1664c Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull xen block driver fixes from Jens Axboe:
 "A few small bug fixes for xen-blk{front,back} that have been sitting
  over my vacation"

* 'for-linus' of git://git.kernel.dk/linux-block:
  xen-blkback: replace work_pending with work_busy in purge_persistent_gnt()
  xen-blkfront: don't add indirect pages to list when !feature_persistent
  xen-blkfront: introduce blkfront_gather_backend_features()
2015-08-13 13:44:32 -07:00
Linus Torvalds 6b476e1140 xen: bug fixes for 4.2-rc6
- Revert a fix from 4.2-rc5 that was causing lots of WARNING spam.
 - Fix a memory leak affecting backends in HVM guests.
 - Fix PV domU hang with certain configurations.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJVzHsAAAoJEFxbo/MsZsTR9Y0H/2j1PHt29RPcNdgGQ84AH0Wh
 tw1emL8rMcdhWQnsO7bNmywNNvRNQnU3ZJ8dzoq+5GPikNsbfQzYc7U2pIL4A+gB
 AAJsNDNzecuq4srk8vNxcmZ7ySvm9w6dccDUex2ge3sNWaq6gzSQvz6FSWiL0Sxg
 k3JcnemEg6JrYOTWdxKInAORMcRO6rgx9eIsdPUPOpgC5XLg6/mZOqBAWXIksDvs
 V9uCMqQicaUgBgKFIOSllqH6fcCNooRu3aDwNNj/2mMcJmEvMeBkHmNlQgEm2j5L
 ubdDyrC5y48TUPJm8i3+W2/AY+kgWzhThcqyVy6LRAAj5RItJFxMf0nMXzIEqlQ=
 =UgMy
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.2-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen bug fixes from David Vrabel:

 - revert a fix from 4.2-rc5 that was causing lots of WARNING spam.

 - fix a memory leak affecting backends in HVM guests.

 - fix PV domU hang with certain configurations.

* tag 'for-linus-4.2-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/xenbus: Don't leak memory when unmapping the ring on HVM backend
  Revert "xen/events/fifo: Handle linked events when closing a port"
  x86/xen: build "Xen PV" APIC driver for domU as well
2015-08-13 13:36:22 -07:00
Linus Torvalds ed596cde94 Revert x86 sigcontext cleanups
This reverts commits 9a036b93a3 ("x86/signal/64: Remove 'fs' and 'gs'
from sigcontext") and c6f2062935 ("x86/signal/64: Fix SS handling for
signals delivered to 64-bit programs").

They were cleanups, but they break dosemu by changing the signal return
behavior (and removing 'fs' and 'gs' from the sigcontext struct - while
not actually changing any behavior - causes build problems).

Reported-and-tested-by: Stas Sergeev <stsp@list.ru>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-13 12:42:22 -07:00
Linus Torvalds 26b552e0a8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Workaround hw bug when acquiring PCI bos ownership of iwlwifi
    devices, from Emmanuel Grumbach.

 2) Falling back to vmalloc in conntrack should not emit a warning, from
    Pablo Neira Ayuso.

 3) Fix NULL deref when rtlwifi driver is used as an AP, from Luis
    Felipe Dominguez Vega.

 4) Rocker doesn't free netdev on device removal, from Ido Schimmel.

 5) UDP multicast early sock demux has route handling races, from Eric
    Dumazet.

 6) Fix L4 checksum handling in openvswitch, from Glenn Griffin.

 7) Fix use-after-free in skb_set_peeked, from Herbert Xu.

 8) Don't advertize NETIF_F_FRAGLIST in virtio_net driver, this can lead
    to fraglists longer than the driver can support.  From Jason Wang.

 9) Fix mlx5 on non-4k-pagesize systems, from Carol L Soto.

10) Fix interrupt storm in bna driver, from Ivan Vecera.

11) Don't propagate -EBUSY from netlink_insert(), from Daniel Borkmann.

12) Fix inet request sock leak, from Eric Dumazet.

13) Fix TX interrupt masking and marking in TX descriptors of fs_enet
    driver, from LEROY Christophe.

14) Get rid of rule optimizer in gianfar driver, it's buggy and unlikely
    to get fixed any time soon.  From Jakub Kicinski

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits)
  cosa: missing error code on failure in probe()
  gianfar: remove faulty filer optimizer
  gianfar: correct list membership accounting
  gianfar: correct filer table writing
  bonding: Gratuitous ARP gets dropped when first slave added
  net: dsa: Do not override PHY interface if already configured
  net: fs_enet: mask interrupts for TX partial frames.
  net: fs_enet: explicitly remove I flag on TX partial frames
  inet: fix possible request socket leak
  inet: fix races with reqsk timers
  mkiss: Fix error handling in mkiss_open()
  bnx2x: Free NVRAM lock at end of each page
  bnx2x: Prevent null pointer dereference on SKB release
  cxgb4: missing curly braces in t4_setup_debugfs()
  net-timestamp: Update skb_complete_tx_timestamp comment
  ipv6: don't reject link-local nexthop on other interface
  netlink: make sure -EBUSY won't escape from netlink_insert
  bna: fix interrupts storm caused by erroneous packets
  net: mvpp2: replace TX coalescing interrupts with hrtimer
  net: mvpp2: enable proper per-CPU TX buffers unmapping
  ...
2015-08-13 10:46:39 -07:00
Linus Torvalds 2331d30dc8 A ppc4xx_edac fix for accessing ->csrows properly. This driver was
missed during the conversion a couple of years ago.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVzBnmAAoJEBLB8Bhh3lVKCdwP+welT0JP1MkElR0KPTyrfi98
 xn1NSO6WfEuXeYQWCUKImsEpMGMulIzc2MW/+KD2aYwnT+iUG2S/etOC6nCEzbq4
 vx0CTKyNAMz55YHZqWXXCUh563WvJczE56J5FQK2tTqv4jaWUKFxPI6tZ+zvDfoR
 phLHRAwaHcaSeD7eaFznNsggF5lEJthzzM7jF2d+g2TO6nbVRZWVo4lhKmV7wOj8
 +/fkPzUFrY+pRvE3Ceop10hT1UY6t6mi3xQFPcU3f+gY9DIr8VFZF1soyLnKMSqi
 SBCiiHzVUhLpSew5JBtvjxL3vSu9vJAFXwBFY4FCkwzIdzyrwNCnH3roDmCGuSuu
 Kj9KHh6BIpBCI5njgvtsx9Ou6XNPwEtZojd2VUfh3BIkZEtXH1+UjIgoOaGuhg4A
 H5kzdEs/w2sfXX5MAJwh5F97qKXJbJ656IgdE7ZDNIhUN6EQLWet37mLkXADtEr1
 0yn//KsidWAk4FqYMSBs0RAHYd7vipm6GodLOTxwejpMWrp1nUS5KhRaSu/0k1u0
 gwEmR1BtwO+mv0o0tg9YGYtmYdZ3X+cYrozIFF1M3RzFd1FzqgEIIpQRzQ66B3Wm
 zPnfvr8EXscQIcxgF/AwRGrf8Yc0mvN3FMctQkEfV9rNEsCwNJdv2xSu+lOm3S/Y
 qhbkLxg35KonH1v04w0f
 =AM3b
 -----END PGP SIGNATURE-----

Merge tag 'edac_fix_for_4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC fix from Borislav Petkov:
 "A ppc4xx_edac fix for accessing ->csrows properly.  This driver was
  missed during the conversion a couple of years ago"

* tag 'edac_fix_for_4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, ppc4xx: Access mci->csrows array elements properly
2015-08-13 10:22:11 -07:00
Murali Karicheri 85ad3deea4 ARM: dts: keystone: Fix the mdio bindings by moving it to soc specific file
Currently mdio bindings are defined in keystone.dtsi and this results
in incorrect unit address for the node on K2E and K2L SoCs. Fix this
by moving them to SoC specific DTS file.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
2015-08-13 10:01:29 -07:00
Murali Karicheri e61eee7cf8 ARM: dts: keystone: fix the clock node for mdio
Currently the MDIO clock is pointing to clkpa instead of clkcpgmac.
MDIO is part of the ethss and the clock should be clkcpgmac.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
2015-08-13 10:01:29 -07:00
Olof Johansson 659181aedd Fix a NULL pointer exception for omap GPMC bus code if probe fails.
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVzE9HAAoJEBvUPslcq6VzxL0QAJhsU69uKUabtYl+DOHfCwER
 7Fnjo5PDAOr184vnWiuQ8xXDjvK8YiyYlYwNkGgrFNAEtHO4akUVmbczfd4Rilqa
 du7tqa4CZDA8jDe1jLjvij3i2GZVYVLzImgBmsvkllQKr3zflSpBTNYm6Wp3nOuV
 /kkuUcN0MzD9G+a3ZIupIYKCXObH8qhgdcWm9O8qMse7yZnLCgn22GZGCl/3hyAf
 tFJRbgFiT5oCU34g9xcjpvKaF03erl/1ti0TUUaHYM+UyJTGtSd/M+0qT7dU/iWw
 YP2MiC9FGl+lcft8y66TKf2chT+aF938DLmtGxyB0OVLgX9ZHrGRPlG1CBs2BsKb
 N2QerIR6J+2+qZhciJhEcfI6RkYVsLLOWf7YK3FbO8OYCO4LZh1ndGRn//zb2cCh
 AGA/zrQlaeop8OMftg1NrNMLpmC0P9hhgiLuBTtLB8Na+sYrAWQUPf7GzB29Tq4L
 LR80UA9XNNKyG2oBqkWTytHOjTWIYK/6yoHnmwbui/ER7B4rY1fHAa/2iCjg1oeY
 yXEEH1j0y8z1mg4DlqK3V3BElq/ixRKY8ogCIQaM8yKazmmZV2536CUBO6V6LmVg
 gOiqKNAjCtYU3wTw6h7UKIOELZMpM9HjCqarbKFHveTPn3ryR8T96NUX7Pg3rOqk
 ucRUpeoo0vyHytP9jVjl
 =nSeK
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fix a NULL pointer exception for omap GPMC bus code if probe fails.

* tag 'omap-for-v4.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  memory: omap-gpmc: Don't try to save uninitialized GPMC context

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-08-13 14:27:12 +02:00
Olof Johansson db55350599 The i.MX fixes for 4.2, 3rd round:
- Fix i.MX6 PCIe interrupt routing which gets missed from stacked IRQ
    domain conversion.  The PCIe wakeup support is currently broken
    because of this.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJVyL2qAAoJEFBXWFqHsHzOGHgH/jgyCg6QVHgxgAoCjySZUbtT
 OwYFKxR3697GGVyUMa0r47TQxL5PusCUzJrNJTg6AhhgatKsGfiB45NRZy5bt8k5
 8M4tShc1n/fV7N2T1h1QbpXZiPhofhFtMq9Yq1lPDrQvOLOymWWZhGwBqbFy0bJT
 4IzqUS7uTE/pvrbFf+iqlwxshSzbbMOOHPqAavyinAKQU5S93v7D4iKJ0q2EmTqh
 hypAL1lZ0/BwBKWSeVVzJoVUFHZFmSzhlbE6ZzcY7S/4Dn2oTwiZQPb+eWj8kQHn
 CALj6KFSnhQ4XKfcBFTH1Z/apSWs6SDWDOig2jzQ/X+JFo9ahnh4fp91NqLML+o=
 =lUqF
 -----END PGP SIGNATURE-----

Merge tag 'imx-fixes-4.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes

The i.MX fixes for 4.2, 3rd round:
 - Fix i.MX6 PCIe interrupt routing which gets missed from stacked IRQ
   domain conversion.  The PCIe wakeup support is currently broken
   because of this.

* tag 'imx-fixes-4.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: imx6: correct i.MX6 PCIe interrupt routing

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-08-13 12:24:55 +02:00
Olof Johansson 07616f013b Two fixes for bugs in Exynos power domain error exit path:
1. kfree() of read-only memory (name of power domain returned
    by kstrdup_const()),
 2. Doubled of_node_put() leading to invalid ref count for OF node.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVyAH+AAoJEME3ZuaGi4PX7iQP/RzGdVZqf90Ub6stLrKib8x3
 NsAWNfZau8BVyJdVIrdFfwGM/muVFKmtFJ8cUcbHd5OKT4S/oyArOqIkPF0kh3Tk
 nXg0OBXRTUJAdqwsQ13lKNYI7tuxQpma2KKqlDisnzVRCTThrs7GNQJScBYJyXtu
 t1Vwd38uc1O+XWFuWvS9muZMIh2lQmGWvM8G30qqiGI+F06r1Ovg8rJWyoFoWhSl
 pyYBD4guPRyZ+fYpIu5x1Tafj0DZNpwu+GHXUq1vZga83hL45klpX2n5RusYi7RG
 AXdJhF0DSaQ4PW3dM5sNyvIGl/nKNjcSANFi/D1OIPFMzIDKDC4AAl2c0J3F9yRM
 lcpO+pwT3EErCbTWhfDq8RRb7GC4oGrPBPFI9+FD0h+fhqaTnOmirA2vXtSS5oMK
 PA39dTbq3LJEmhxM9+4pC7NZFz4zALSX4g8n0/SLhqShQM/lxKAlvhZnPB2izB1X
 PUI8IgtIsFtVE+A+vrVl5NuDdhrLY48Ksg6L2aOs1oeMqob8hJY2V+v+JjCWMBmZ
 cgVWCMy43vBfzOYpe32ykkw4Om2MkLrWv65EJaWNkG/Mjueu8C9pzjInXVMmZgNe
 llYGOSjupPMwmiyDxF3xHuPLxJl12G5HK38AfaV5FKstVTp31XoXNSiWhqAfb5Af
 Q4jA7Jch5l45vGmwgPZZ
 =qAfT
 -----END PGP SIGNATURE-----

Merge tag 'samsung-mach-fixes-4.2' of https://github.com/krzk/linux into fixes

Two fixes for bugs in Exynos power domain error exit path:
1. kfree() of read-only memory (name of power domain returned
   by kstrdup_const()),
2. Doubled of_node_put() leading to invalid ref count for OF node.

* tag 'samsung-mach-fixes-4.2' of https://github.com/krzk/linux:
  ARM: EXYNOS: fix double of_node_put() on error path
  ARM: EXYNOS: Fix potentian kfree() of ro memory

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-08-13 12:18:45 +02:00
Horia Geant? b310c178e6 crypto: caam - fix memory corruption in ahash_final_ctx
When doing pointer operation for accessing the HW S/G table,
a value representing number of entries (and not number of bytes)
must be used.

Cc: <stable@vger.kernel.org> # 3.6+
Fixes: 045e36780f ("crypto: caam - ahash hmac support")
Signed-off-by: Horia Geant? <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-08-13 15:08:25 +08:00
Michael Walle 5c16179b55 EDAC, ppc4xx: Access mci->csrows array elements properly
The commit

  de3910eb79 ("edac: change the mem allocation scheme to
		 make Documentation/kobject.txt happy")

changed the memory allocation for the csrows member. But ppc4xx_edac was
forgotten in the patch. Fix it.

Signed-off-by: Michael Walle <michael@walle.cc>
Cc: <stable@vger.kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Link: http://lkml.kernel.org/r/1437469253-8611-1-git-send-email-michael@walle.cc
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-08-13 06:02:19 +02:00
Dan Carpenter e6d006938c cosa: missing error code on failure in probe()
If register_hdlc_device() fails, the current code returns 0 but we
should return an error code instead.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-12 16:53:11 -07:00
David S. Miller e941ba8650 Merge branch 'gianfar-fixes'
Jakub Kicinski says:

====================
gianfar: filer changes

respinning with examples as requested.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-12 14:47:06 -07:00
Jakub Kicinski 1f2b729334 gianfar: remove faulty filer optimizer
Current filer rule optimization is broken in several ways:
 (1) Can perform reads/writes beyond end of allocated tables.
     (gianfar_ethtool.c:1326).

(2) It breaks badly for rules with more than 2 specifiers
     (e.g. matching ip, port, tos).

Example:
# ethtool -N eth2 flow-type udp4 dst-ip 10.0.0.1 dst-port 1 tos 1 action 1
Added rule with ID 254
# ethtool -N eth2 flow-type udp4 dst-ip 10.0.0.2 dst-port 2 tos 2 action 9
Added rule with ID 253
# ethtool -N eth2 flow-type udp4 dst-ip 10.0.0.3 dst-port 3 tos 3 action 17
Added rule with ID 252
# ./filer_decode /sys/kernel/debug/gfar1/filer_raw
00: MASK == 00000210 AND         Q:00           ctrl:00000080 prop:00000210
01: FPR  == 00000210 AND CLE     Q:00           ctrl:00000281 prop:00000210
02: MASK == ffffffff AND         Q:00           ctrl:00000080 prop:ffffffff
03: DPT  == 00000003 AND         Q:00           ctrl:0000008e prop:00000003
04: TOS  == 00000003 AND         Q:00           ctrl:0000008a prop:00000003
05: DIA  == 0a000003 AND         Q:11           ctrl:0000448c prop:0a000003
06: DPT  == 00000002 AND         Q:00           ctrl:0000008e prop:00000002
07: TOS  == 00000002 AND         Q:00           ctrl:0000008a prop:00000002
08: DIA  == 0a000002 AND         Q:09           ctrl:0000248c prop:0a000002
09: DIA  == 0a000001 AND         Q:00           ctrl:0000008c prop:0a000001
0a: DPT  == 00000001 AND         Q:00           ctrl:0000008e prop:00000001
0b: TOS  == 00000001     CLE     Q:01           ctrl:0000060a prop:00000001
ff: MASK >= 00000000             Q:00           ctrl:00000020 prop:00000000

(Entire cluster gets AND-ed together).

 (3) We observed that the masking rules it generates do not
     play well with clustering on P2020.  Only first rule
     of the cluster would ever fire.  Given that optimizer
     relies heavily on masking this is very hard to fix.

Example:
# ethtool -N eth2 flow-type udp4 dst-ip 10.0.0.1 dst-port 1  action 1
Added rule with ID 254
# ethtool -N eth2 flow-type udp4 dst-ip 10.0.0.2 dst-port 2  action 9
Added rule with ID 253
# ethtool -N eth2 flow-type udp4 dst-ip 10.0.0.3 dst-port 3  action 17
Added rule with ID 252
# ./filer_decode /sys/kernel/debug/gfar1/filer_raw
00: MASK == 00000210 AND         Q:00           ctrl:00000080 prop:00000210
01: FPR  == 00000210 AND CLE     Q:00           ctrl:00000281 prop:00000210
02: MASK == ffffffff AND         Q:00           ctrl:00000080 prop:ffffffff
03: DPT  == 00000003 AND         Q:00           ctrl:0000008e prop:00000003
04: DIA  == 0a000003             Q:11           ctrl:0000440c prop:0a000003
05: DPT  == 00000002 AND         Q:00           ctrl:0000008e prop:00000002
06: DIA  == 0a000002             Q:09           ctrl:0000240c prop:0a000002
07: DIA  == 0a000001 AND         Q:00           ctrl:0000008c prop:0a000001
08: DPT  == 00000001     CLE     Q:01           ctrl:0000060e prop:00000001
ff: MASK >= 00000000             Q:00           ctrl:00000020 prop:00000000

Which looks correct according to the spec but only the first
(eth id 252)/last added rule for 10.0.0.3 will ever trigger.
As if filer did not treat the AND CLE as cluster start but
also kept AND-ing the rules.  We found no errata covering this.

The fact that nobody noticed (2) or (3) makes me think
that this feature is not very widely used and we should just
remove it.

Reported-by: Aleksander Dutkowski <adutkowski@gmail.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Acked-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-12 14:47:06 -07:00