s390:
* Two fixes for potential bitmap overruns in the cmma migration code
x86:
* Clear guest provided GPRs to defeat the Project Zero PoC for CVE
2017-5715
-----BEGIN PGP SIGNATURE-----
iQEcBAABCAAGBQJaUTJ4AAoJEED/6hsPKofohk0IAJAFlMG66u5MxC0kSM61U4Zf
1vkzRwAkBbcN82LpGQKbqabVyTq0F3aLipyOn6WO5SN0K5m+OI2OV/aAroPyX8bI
F7nWIqTXLhJ9X6KXINFvyavHMprvWl8PA72tR/B/7GhhfShrZ2wGgqhl0vv/kCUK
/8q+5e693yJqw8ceemin9a6kPJrLpmjeH+Oy24KIlGbvJWV4UrIE86pRHnAnBtg8
L7Vbxn5+ezKmakvBh+zF8NKcD1zHDcmQZHoYFPsQT0vX5GPoYqT2bcO6gsh1Grmp
8ti6KkrnP+j2A/OEna4LBWfwKI/1xHXneB22BYrAxvNjHt+R4JrjaPpx82SEB4Y=
=URMR
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"s390:
- Two fixes for potential bitmap overruns in the cmma migration code
x86:
- Clear guest provided GPRs to defeat the Project Zero PoC for CVE
2017-5715"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: vmx: Scrub hardware GPRs at VM-exit
KVM: s390: prevent buffer overrun on memory hotplug during migration
KVM: s390: fix cmma migration for multiple memory slots
since commit 82abbf8d2f the verifier rejects the bit-wise
arithmetic on pointers earlier.
The test 'dubious pointer arithmetic' now has less output to match on.
Adjust it.
Fixes: 82abbf8d2f ("bpf: do not allow root to mangle valid pointers")
Reported-by: kernel test robot <xiaolong.ye@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Add psock NULL check to handle a racing sock event that can get the
sk_callback_lock before this case but after xchg happens causing the
refcnt to hit zero and sock user data (psock) to be null and queued
for garbage collection.
Also add a comment in the code because this is a bit subtle and
not obvious in my opinion.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
In the current driver, OOB bytes are accessed in raw mode, and when a
page access is done with NDCR_SPARE_EN set and NDCR_ECC_EN cleared, the
driver must read the whole spare area (64 bytes in case of a 2k page,
16 bytes for a 512 page). The driver was only reading the free OOB
bytes, which was leaving some unread data in the FIFO and was somehow
leading to a timeout.
We could patch the driver to read ->spare_size + ->ecc_size instead of
just ->spare_size when READOOB is requested, but we'd better make
in-band and OOB accesses consistent.
Since the driver is always accessing in-band data in non-raw mode (with
the ECC engine enabled), we should also access OOB data in this mode.
That's particularly useful when using the BCH engine because in this
mode the free OOB bytes are also ECC protected.
Fixes: 43bcfd2bb2 ("mtd: nand: pxa3xx: Add driver-specific ECC BCH support")
Cc: stable@vger.kernel.org
Reported-by: Sean Nyekjær <sean.nyekjaer@prevas.dk>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Tested-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Richard Weinberger <richard@nod.at>
Add the bug bits for spectre v1/2 and force them unconditionally for all
cpus.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1515239374-23361-2-git-send-email-dwmw@amazon.co.uk
Add some details about how PTI works, what some of the downsides
are, and how to debug it when things go wrong.
Also document the kernel parameter: 'pti/nopti'.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Moritz Lipp <moritz.lipp@iaik.tugraz.at>
Cc: Daniel Gruss <daniel.gruss@iaik.tugraz.at>
Cc: Michael Schwarz <michael.schwarz@iaik.tugraz.at>
Cc: Richard Fellner <richard.fellner@student.tugraz.at>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andi Lutomirsky <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180105174436.1BC6FA2B@viggo.jf.intel.com
EFI_OLD_MEMMAP's efi_call_phys_prolog() calls set_pgd() with swapper PGD that
has PAGE_USER set, which makes PTI set NX on it, and therefore EFI can't
execute it's code.
Fix that by forcefully clearing _PAGE_NX from the PGD (this can't be done
by the pgprot API).
_PAGE_NX will be automatically reintroduced in efi_call_phys_epilog(), as
_set_pgd() will again notice that this is _PAGE_USER, and set _PAGE_NX on
it.
Tested-by: Dimitri Sivanich <sivanich@hpe.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/nycvar.YFH.7.76.1801052215460.11852@cbobk.fhfr.pm
Just one fix to correctly return SEGV_ACCERR when we take a SEGV on a mapped
region. The bug was introduced in the refactoring of the page fault handler we
did in the previous release.
Thanks to:
John Sperbeck.
-----BEGIN PGP SIGNATURE-----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=VAzk
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.15-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"Just one fix to correctly return SEGV_ACCERR when we take a SEGV on a
mapped region. The bug was introduced in the refactoring of the page
fault handler we did in the previous release.
Thanks to John Sperbeck"
* tag 'powerpc-4.15-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm: Fix SEGV on mapped region to return SEGV_ACCERR
范龙飞 reports that KASAN can report a use-after-free in __lock_acquire.
The reason is due to insufficient serialization in lo_release(), which
will continue to use the loop device even after it has decremented the
lo_refcnt to zero.
In the meantime, another process can come in, open the loop device
again as it is being shut down. Confusion ensues.
Reported-by: 范龙飞 <long7573@126.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Instead of blacklisting all model 79 CPUs when attempting a late
microcode loading, limit that only to CPUs with microcode revisions <
0x0b000021 because only on those late loading may cause a system hang.
For such processors either:
a) a BIOS update which might contain a newer microcode revision
or
b) the early microcode loading method
should be considered.
Processors with revisions 0x0b000021 or higher will not experience such
hangs.
For more details, see erratum BDF90 in document #334165 (Intel Xeon
Processor E7-8800/4800 v4 Product Family Specification Update) from
September 2017.
[ bp: Heavily massage commit message and pr_* statements. ]
Fixes: 723f2828a9 ("x86/microcode/intel: Disable late loading on model 79")
Signed-off-by: Jia Zhang <qianyue.zj@alibaba-inc.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: x86-ml <x86@kernel.org>
Cc: <stable@vger.kernel.org> # v4.14
Link: http://lkml.kernel.org/r/1514772287-92959-1-git-send-email-qianyue.zj@alibaba-inc.com
Add qemu idle sleep support when running under qemu with SeaBIOS PDC
firmware.
Like the power architecture we use the "or" assembler instructions,
which translate to nops on real hardware, to indicate that qemu shall
idle sleep.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Richard Henderson <rth@twiddle.net>
CC: stable@vger.kernel.org # v4.9+
Pull input fixes from Dmitry Torokhov:
"Just a few driver fixups, nothing exciting"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: xen-kbdfront - do not advertise multi-touch pressure support
Input: hideep - fix compile error due to missing include file
Input: elants_i2c - do not clobber interrupt trigger on x86
Input: joystick/analog - riscv has get_cycles()
Input: elantech - add new icbody type 15
Input: ims-pcu - fix typo in the error message
When the mount code was refactored for Labels it was not correctly
updated to check whether policy supported mediation of the mount
class. This causes a regression when the kernel feature set is
reported as supporting mount and policy is pinned to a feature set
that does not support mount mediation.
BugLink: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882697#41
Fixes: 2ea3ffb778 ("apparmor: add mount mediation")
Reported-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John Johansen <john.johansen@canonical.com>
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAlpPux0ACgkQxWXV+ddt
WDs/ORAAgRtjm+OWBb80eV1xJIHGRPRaL6E4OZc6SA7DEA+oCpkkVzOHQz3PV2a2
cAsIUvp9azZd41gzBMw8mIe4AQKLZpud+vEM7QYRlbZFtp3EWmZ1Jht4bJRxC+w7
NjBIEx4MX2KiUeRizmo3iWBVW+RoaRVW1xvFo/k5QchhO8U74SNYzxTGVxd8S/C0
ZanuTowdm71uCJJHkoNWArAsou40QCJOYK19WilRkrf6SGsUqc1zKArRKe2KF4GH
Wyf4Qyp2fm8RRKLOlc9NcsVbVqVg4kBmUXbJPCvltCs+JiyfhX9hahweoHHH8kmH
u/jR3CItVqX+Ft1WAtSpgRzxO0uGu6aVkIql0VHV6wIbGnFoJd9XQ6RPnT/awlOw
1jx8RLOZtVehF6pjyoSngLppqCw/sYpV8QhF32dEFGentO3Wd7CVKTcMOH498dbN
paNzcNEfnTFLbUmViOTXl8AS8VX+3PU2Mgn8W8UxcFYksoIpV9P/LBDS3iIGYMtL
pFFC9fYeipBDOPg2NV4QfCE9ZSqm35c2kAV/hb1nmPtPz4W+Ya5v2y9RSjAU80f4
Y8ZyePg6pjwWOp1dW+TZF0NE8ExzSvgnXAQOdZkiy4Ztc6OwTVhlwRfW1xFy2Py+
riR87A7/mDbiR9IXHgzFZi6WjjVMHDifBKeEpu91cF9JrwJqMBc=
=WIOv
-----END PGP SIGNATURE-----
Merge tag 'for-4.15-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"We have two more fixes for 4.15, both aimed for stable.
The leak fix is obvious, the second patch fixes a bug revealed by the
refcount API, when it behaves differently than previous atomic_t and
reports refs going from 0 to 1 in one case"
* tag 'for-4.15-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix refcount_t usage when deleting btrfs_delayed_nodes
btrfs: Fix flush bio leak
-----BEGIN PGP SIGNATURE-----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=8CZD
-----END PGP SIGNATURE-----
Merge tag 'mfd-fixes-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD fix from Lee Jones:
"Late bugfix to plug a leak in rtsx_pcr"
* tag 'mfd-fixes-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: rtsx: Release IRQ during shutdown
Pull more x86 pti fixes from Thomas Gleixner:
"Another small stash of fixes for fallout from the PTI work:
- Fix the modules vs. KASAN breakage which was caused by making
MODULES_END depend of the fixmap size. That was done when the cpu
entry area moved into the fixmap, but now that we have a separate
map space for that this is causing more issues than it solves.
- Use the proper cache flush methods for the debugstore buffers as
they are mapped/unmapped during runtime and not statically mapped
at boot time like the rest of the cpu entry area.
- Make the map layout of the cpu_entry_area consistent for 4 and 5
level paging and fix the KASLR vaddr_end wreckage.
- Use PER_CPU_EXPORT for per cpu variable and while at it unbreak
nvidia gfx drivers by dropping the GPL export. The subject line of
the commit tells it the other way around, but I noticed that too
late.
- Fix the ASM alternative macros so they can be used in the middle of
an inline asm block.
- Rename the BUG_CPU_INSECURE flag to BUG_CPU_MELTDOWN so the attack
vector is properly identified. The Spectre mitigations will come
with their own bug bits later"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN
x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm
x86/tlb: Drop the _GPL from the cpu_tlbstate export
x86/events/intel/ds: Use the proper cache flush method for mapping ds buffers
x86/kaslr: Fix the vaddr_end mess
x86/mm: Map cpu_entry_area at the same place on 4/5 level
x86/mm: Set MODULES_END to 0xffffffffff000000
Pull EFI updates from Thomas Gleixner:
- A fix for a add_efi_memmap parameter regression which ensures that
the parameter is parsed before it is used.
- Reinstate the virtual capsule mapping as the cached copy turned out
to break Quark and other things
- Remove Matt Fleming as EFI co-maintainer. He stepped back a few days
ago. Thanks Matt for all your great work!
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Remove Matt Fleming as EFI co-maintainer
efi/capsule-loader: Reinstate virtual capsule mapping
x86/efi: Fix kernel param add_efi_memmap regression
Pull s390 fixes from Martin Schwidefsky:
"Four bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/dasd: fix wrongly assigned configuration data
s390: fix preemption race in disable_sacf_uaccess
s390/sclp: disable FORTIFY_SOURCE for early sclp code
s390/pci: handle insufficient resources during dma tlb flush
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQEcBAABAgAGBQJaTzbbAAoJELDendYovxMvKNEIAIOiWxWILvr1fiHsXfYhUA+C
8DO9B1Kolp7lD068/nIcyyYeg3S0/OT5EBu7yKoV+ta6pbVKLTQ3Xc7hyJBJqq3q
niF1M8A+8KeO6xjrPNWs4FeE52wSFkbB7Up4+QA3802WEXu7AIpxIaqwEWRYsGkG
1L2gFZtVjXFrNROnwZplReygf97xyY1EUtLlE6shtO0M8jdWWX1vJxgHs2O+iv3u
Lmc38vEwvG+wMum6h1zuxZbzRNWq0it3xkCY3PA4HSvJuDKL8gD7ytyOIJVG3WqB
Le3LgA065juiatCm+KkmTkOpbETNAiFteOg3yCbera+OizkvBrYcNfgDi+zvJPk=
=MXsy
-----END PGP SIGNATURE-----
Merge tag 'for-linus-4.15-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"One minor fix adjusting the kmalloc flags in the new pvcalls driver
added in rc1"
* tag 'for-linus-4.15-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/pvcalls: use GFP_ATOMIC under spin lock
Pull crypto fixes from Herbert Xu:
"This fixes the following issues:
- racy use of ctx->rcvused in af_alg
- algif_aead crash in chacha20poly1305
- freeing bogus pointer in pcrypt
- build error on MIPS in mpi
- memory leak in inside-secure
- memory overwrite in inside-secure
- NULL pointer dereference in inside-secure
- state corruption in inside-secure
- build error without CRYPTO_GF128MUL in chelsio
- use after free in n2"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: inside-secure - do not use areq->result for partial results
crypto: inside-secure - fix request allocations in invalidation path
crypto: inside-secure - free requests even if their handling failed
crypto: inside-secure - per request invalidation
lib/mpi: Fix umul_ppmm() for MIPS64r6
crypto: pcrypt - fix freeing pcrypt instances
crypto: n2 - cure use after free
crypto: af_alg - Fix race around ctx->rcvused by making it atomic_t
crypto: chacha20poly1305 - validate the digest size
crypto: chelsio - select CRYPTO_GF128MUL
Merge misc fixes from Andrew Morton:
"9 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mailmap: update Mark Yao's email address
userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails
mm/sparse.c: wrong allocation for mem_section
mm/zsmalloc.c: include fs.h
mm/debug.c: provide useful debugging information for VM_BUG
kernel/exit.c: export abort() to modules
mm/mprotect: add a cond_resched() inside change_pmd_range()
kernel/acct.c: fix the acct->needcheck check in check_free_space()
mm: check pfn_valid first in zero_resv_unavail
Renesas SH7757 has 2 Fast and 2 Gigabit Ether controllers, while the
'sh_eth' driver can only reset and initialize TSU of the first controller
pair. Shimoda-san tried to solve that adding the 'needs_init' member to the
'struct sh_eth_plat_data', however the platform code still never sets this
flag. I think that we can infer this information from the 'devno' variable
(set to 'platform_device::id') and reset/init the Ether controller pair
only for an even 'devno'; therefore 'sh_eth_plat_data::needs_init' can be
removed...
Fixes: 150647fb2c ("net: sh_eth: change the condition of initialization")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEE4bay/IylYqM/npjQHv7KIOw4HPYFAlpORQ0THG1rbEBwZW5n
dXRyb25peC5kZQAKCRAe/sog7Dgc9udAB/9dB0H3bar+wLarrX5bPHuIios9545C
0vgqDJ7pftwpU8WH10NiJfRwLXIEAqvM8ipJtJrRtQV+qdPUHI9ZFRZ63g8nGf3p
Eut697i8jkaHNpdJ+klfww+V1KK5NAy8TqM5TyQOzrSNT4xTMrxFu7igoqvRy0lm
6VxwPeq9GLnbrUIzHQG3ggGqI7lUmOglxPaf3qon00p41ZJhztFOuBEjgGEMyq3w
SOj+K+ciDbsC/k2AIk2XzgOXpfPztLwc4x5UJkmowMOPckV83uw54w2BNHX4Kwex
h2xz9ytu2bHpOvtIDDhLYdJYL43ajr7wQXvIZj6C3dGO7dxDjTbFpkRQ
=AHV0
-----END PGP SIGNATURE-----
Merge tag 'linux-can-fixes-for-4.15-20180104' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2018-01-04
this is a pull request for net/master consisting of 4 patches.
The first patch is by Oliver Hartkopp, it improves the error checking
during the creation of a vxcan link. Wolfgang Grandegger's patch for the
gs_usb driver fixes the return value of the "set_bittiming" callback.
Luu An Phu provides a patch for the flexcan driver to fix the frame
length check in the flexcan_start_xmit() function. The last patch is by
Martin Lederhilger for the ems_usb driver and improves the error
reporting for error warning and passive frames.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Geminilake requires the 3D driver to select whether barriers are
intended for compute shaders, or tessellation control shaders, by
whacking a "Barrier Mode" bit in SLICE_COMMON_ECO_CHICKEN1 when
switching pipelines. Failure to do this properly can result in GPU
hangs.
Unfortunately, this means it needs to switch mid-batch, so only
userspace can properly set it. To facilitate this, the kernel needs
to whitelist the register.
The workarounds page currently tags this as applying to Broxton only,
but that doesn't make sense. The documentation for the register it
references says the bit userspace is supposed to toggle only exists on
Geminilake. Empirically, the Mesa patch to toggle this bit appears to
fix intermittent GPU hangs in tessellation control shader barrier tests
on Geminilake; we haven't seen those hangs on Broxton.
v2: Mention WA #0862 in the comment (it doesn't have a name).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180105085905.9298-1-kenneth@whitecape.org
Since commit 31847b67be ("kconfig: allow use of relations other than
(in)equality") it is possible to use relational operators in Kconfig
statements. However, those operators give unexpected results when
applied to bool/tristate values:
(n < y) = y (correct)
(m < y) = y (correct)
(n < m) = n (wrong)
This happens because relational operators process bool and tristate
symbols as strings and m sorts before n. It makes little sense to do a
lexicographical compare on bool and tristate values though.
Documentation/kbuild/kconfig-language.txt states that expression can have
a value of 'n', 'm' or 'y' (or 0, 1, 2 respectively for calculations).
Let's make it so for relational comparisons with bool/tristate
expressions as well and document them. If at least one symbol is an
actual string then the lexicographical compare works just as before.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Descriptor table is a shared object; it's not a place where you can
stick temporary references to files, especially when we don't need
an opened file at all.
Cc: stable@vger.kernel.org # v4.14
Fixes: 98589a0998 ("netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fixes in probe error path:
- Restore dev_id before failed_ioremap path.
Fixes: ("net: fec: restore dev_id in the cases of probe error")
- Call of_node_put(phy_node) before failed_phy path.
Fixes: ("net: fec: Support phys probed from devicetree and fixed-link")
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now we track legacy requests with .q_usage_counter in commit 055f6e18e0
("block: Make q_usage_counter also track legacy requests"), but that
commit never runs and drains legacy queue before waiting for this counter
becoming zero, then IO hang is caused in the test of pulling disk during IO.
This patch fixes the issue by draining requests before waiting for
q_usage_counter becoming zero, both Mauricio and chenxiang reported this
issue, and observed that it can be fixed by this patch.
Link: https://marc.info/?l=linux-block&m=151192424731797&w=2
Fixes: 055f6e18e08f("block: Make q_usage_counter also track legacy requests")
Cc: Wen Xiong <wenxiong@us.ibm.com>
Tested-by: "chenxiang (M)" <chenxiang66@hisilicon.com>
Tested-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Guest GPR values are live in the hardware GPRs at VM-exit. Do not
leave any guest values in hardware GPRs after the guest GPR values are
saved to the vcpu_vmx structure.
This is a partial mitigation for CVE 2017-5715 and CVE 2017-5753.
Specifically, it defeats the Project Zero PoC for CVE 2017-5715.
Suggested-by: Eric Northup <digitaleric@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Eric Northup <digitaleric@google.com>
Reviewed-by: Benjamin Serebrin <serebrin@google.com>
Reviewed-by: Andrew Honig <ahonig@google.com>
[Paolo: Add AMD bits, Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The aloop driver tries to update the hw constraints of the connected
target on the cable of the opened PCM substream. This is done by
adding the extra hw constraints rules referring to the substream
runtime->hw fields, while the other substream may update the runtime
hw of another side on the fly.
This is, however, racy and may result in the inconsistent values when
both PCM streams perform the prepare concurrently. One of the reason
is that it overwrites the other's runtime->hw field; which is not only
racy but also broken when it's called before the open of another side
finishes. And, since the reference to runtime->hw isn't protected,
the concurrent write may give the partial value update and become
inconsistent.
This patch is an attempt to fix and clean up:
- The prepare doesn't change the runtime->hw of other side any longer,
but only update the cable->hw that is referred commonly.
- The extra rules refer to the loopback_pcm object instead of the
runtime->hw. The actual hw is deduced from cable->hw.
- The extra rules take the cable_lock to protect against the race.
Fixes: b1c73fc8e6 ("ALSA: snd-aloop: Fix hw_params restrictions and checking")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The extra hw constraint rule for the formats the aloop driver
introduced has a slight flaw, where it doesn't return a positive value
when the mask got changed. It came from the fact that it's basically
a copy&paste from snd_hw_constraint_mask64(). The original code is
supposed to be a single-shot and it modifies the mask bits only once
and never after, while what we need for aloop is the dynamic hw rule
that limits the mask bits.
This difference results in the inconsistent state, as the hw_refine
doesn't apply the dependencies fully. The worse and surprisingly
result is that it causes a crash in OSS emulation when multiple
full-duplex reads/writes are performed concurrently (I leave why it
triggers Oops to readers as a homework).
For fixing this, replace a few open-codes with the standard
snd_mask_*() macros.
Reported-by: syzbot+3902b5220e8ca27889ca@syzkaller.appspotmail.com
Fixes: b1c73fc8e6 ("ALSA: snd-aloop: Fix hw_params restrictions and checking")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree,
they are:
1) Fix chain filtering when dumping rules via nf_tables_dump_rules().
2) Fix accidental change in NF_CT_STATE_UNTRACKED_BIT through uapi,
introduced when removing the untracked conntrack object, from
Florian Westphal.
3) Fix potential nul-dereference when releasing dump filter in
nf_tables_dump_obj_done(), patch from Hangbin Liu.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The aloop runtime object and its assignment in the cable are left even
when opening a substream fails. This doesn't mean any memory leak,
but it still keeps the invalid pointer that may be referred by the
another side of the cable spontaneously, which is a potential Oops
cause.
Clean up the cable assignment and the empty cable upon the error path
properly.
Fixes: 597603d615 ("ALSA: introduce the snd-aloop module for the PCM loopback")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The commit 9027c4639e ("ALSA: pcm: Call ack() whenever appl_ptr is
updated") introduced the possible error code returned from the PCM
rewind ioctl. Basically the change was for handling the indirect PCM
more correctly, but ironically, it caused rather a side-effect:
PulseAudio gets pissed off when receiving an error from rewind, throws
everything away and stops processing further, resulting in the
silence.
It's clearly a failure in the application side, so the best would be
to fix that bug in PA. OTOH, PA is mostly the only user of the rewind
feature, so it's not good to slap the sole customer.
This patch tries to mitigate the situation: instead of returning an
error, now the rewind ioctl returns zero when the driver can't rewind.
It indicates that no rewind was performed, so the behavior is
consistent, at least.
Fixes: 9027c4639e ("ALSA: pcm: Call ack() whenever appl_ptr is updated")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Use the name associated with the particular attack which needs page table
isolation for mitigation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Cc: Jiri Koshina <jikos@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Lutomirski <luto@amacapital.net>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Turner <pjt@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Greg KH <gregkh@linux-foundation.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801051525300.1724@nanos
Where an ALTERNATIVE is used in the middle of an inline asm block, this
would otherwise lead to the following instruction being appended directly
to the trailing ".popsection", and a failed compile.
Fixes: 9cebed423c ("x86, alternative: Use .pushsection/.popsection")
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: ak@linux.intel.com
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Turner <pjt@google.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180104143710.8961-8-dwmw@amazon.co.uk
22000 devices (previously referenced as A000) can support
short transmit queues. This means that we have less DMA
descriptors (TFD) for those shorter queues.
Previous devices must still have 256 TFDs for each queue
even if those 256 TFDs point to fewer buffers.
When I introduced support for the short queues for 22000
I broke older devices by assuming that they can also have
less TFDs in their queues. This led to several problems:
1) the payload of the commands weren't unmapped properly
which caused the SWIOTLB to complain at some point.
2) the hardware could get confused and we get hardware
crashes.
The corresponding bugzilla entries are:
https://bugzilla.kernel.org/show_bug.cgi?id=198201https://bugzilla.kernel.org/show_bug.cgi?id=198265
Cc: stable@vger.kernel.org # 4.14+
Fixes: 4ecab56160 ("iwlwifi: pcie: support short Tx queues for A000 device family")
Reviewed-by: Sharon, Sara <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
'Commit cc27b735ad ("PCI/portdrv: Turn off PCIe services during
shutdown")' revealed a resource leak in rtsx_pci driver during shutdown.
Issue shows up as a warning during shutdown as follows:
remove_proc_entry: removing non-empty directory 'irq/17', leaking at least
'rtsx_pci'
WARNING: CPU: 0 PID: 1578 at fs/proc/generic.c:572
remove_proc_entry+0x11d/0x130
Modules linked in <long list but none that are out-of-tree>
...
Call Trace:
unregister_irq_proc
free_desc
irq_free_descs
mp_unmap_irq
acpi_unregister_gsi_apic
acpi_pci_irq_disable
do_pci_disable_device
pci_disable_device
device_shutdown
kernel_restart
Sys_reboot
Even though rtsx_pci driver implements a shutdown callback, it is not
releasing the interrupt that it registered during probe. This is causing
the ACPI layer to complain that the shared IRQ is in use while freeing
IRQ.
This code releases the IRQ to prevent resource leak and eliminate the
warning.
Fixes: cc27b735ad ("PCI/portdrv: Turn off PCIe services during shutdown")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=198141
Reported-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
syzkaller triggered a NULL pointer dereference in crypto_remove_spawns()
via a program that repeatedly and concurrently requests AEADs
"authenc(cmac(des3_ede-asm),pcbc-aes-aesni)" and hashes "cmac(des3_ede)"
through AF_ALG, where the hashes are requested as "untested"
(CRYPTO_ALG_TESTED is set in ->salg_mask but clear in ->salg_feat; this
causes the template to be instantiated for every request).
Although AF_ALG users really shouldn't be able to request an "untested"
algorithm, the NULL pointer dereference is actually caused by a
longstanding race condition where crypto_remove_spawns() can encounter
an instance which has had spawn(s) "grabbed" but hasn't yet been
registered, resulting in ->cra_users still being NULL.
We probably should properly initialize ->cra_users earlier, but that
would require updating many templates individually. For now just fix
the bug in a simple way that can easily be backported: make
crypto_remove_spawns() treat a NULL ->cra_users list as empty.
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-----BEGIN PGP SIGNATURE-----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=oJeP
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-for-v4.15-rc7' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Just collecting some fixes to finish my hoildays :-).
A few fixes for i915 (one documentation build fix), one ttm fix, one
AMD display fix, one omapdrm fix, and a set of armada fixes from
Russell.
All seem pretty small, you can now return to your latest security news
site"
* tag 'drm-fixes-for-v4.15-rc7' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Apply Display WA #1183 on skl, kbl, and cfl
drm/ttm: check the return value of kzalloc
drm/amd/display: call set csc_default if enable adjustment is false
docs: fix, intel_guc_loader.c has been moved to intel_guc_fw.c
omapdrm/dss/hdmi4_cec: fix interrupt handling
documentation/gpu/i915: fix docs build error after file rename
drm/i915: Put all non-blocking modesets onto an ordered wq
drm/i915: Disable DC states around GMBUS on GLK
drm/i915/psr: Fix register name mess up.
drm/armada: fix YUV planar format framebuffer offsets
drm/armada: improve efficiency of armada_drm_plane_calc_addrs()
drm/armada: fix UV swap code
drm/armada: fix SRAM powerdown
drm/armada: fix leak of crtc structure
- Add tiled prefetch support to PRE
- Add format modifier support to PRG and imx-drm-core
- Use runtime PM to control PRG clock
- Allow building ipu-v3 under COMPILE_TEST
-----BEGIN PGP SIGNATURE-----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=dt6o
-----END PGP SIGNATURE-----
Merge tag 'imx-drm-next-2018-01-02' of git://git.pengutronix.de/git/pza/linux into drm-next
drm/imx: format modifier support
- Add tiled prefetch support to PRE
- Add format modifier support to PRG and imx-drm-core
- Use runtime PM to control PRG clock
- Allow building ipu-v3 under COMPILE_TEST
* tag 'imx-drm-next-2018-01-02' of git://git.pengutronix.de/git/pza/linux:
gpu: ipu-v3: allow to build with COMPILE_TEST
drm/imx: advertise supported plane format modifiers
drm/imx: add FB modifier support
gpu: ipu-v3: prg: add modifier support
gpu: ipu-v3: pre: add tiled prefetch support
gpu: ipu-v3: prg: switch to runtime PM
Linus Torvalds