There is one more user of $(cc-name) in the top Makefile. It is supposed
to detect Clang before invoking Kconfig, so it should still be there
in the $(shell ...) form. All the other users of $(cc-name) have been
replaced with $(CONFIG_CC_IS_CLANG). Hence, scripts/Kbuild.include does
not need to define cc-name any more.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Evaluating cc-name invokes the compiler every time even when you are
not compiling anything, like 'make help'. This is not efficient.
The compiler type has been already detected in the Kconfig stage.
Use CONFIG_CC_IS_CLANG, instead.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Acked-by: Paul Burton <paul.burton@mips.com> (MIPS)
Acked-by: Joel Stanley <joel@jms.id.au>
Previously, the attribute entry for diagnostic sampling was added
if authorized. Otherwise, the array of struct attribute contains
two NULL values.
Change this logic and reserve space for the attribute for diagnostic
sampling. If diagnostic sampling is authorized, add an entry in the
respective position in the array of struct attribute.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Suggested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
In case a fork or a clone system fails in copy_process and the error
handling does the mmput() at the bad_fork_cleanup_mm label, the
following warning messages will appear on the console:
BUG: non-zero pgtables_bytes on freeing mm: 16384
The reason for that is the tricks we play with mm_inc_nr_puds() and
mm_inc_nr_pmds() in init_new_context().
A normal 64-bit process has 3 levels of page table, the p4d level and
the pud level are folded. On process termination the free_pud_range()
function in mm/memory.c will subtract 16KB from pgtable_bytes with a
mm_dec_nr_puds() call, but there actually is not really a pud table.
One issue with this is the fact that pgtable_bytes is usually off
by a few kilobytes, but the more severe problem is that for a failed
fork or clone the free_pgtables() function is not called. In this case
there is no mm_dec_nr_puds() or mm_dec_nr_pmds() that go together with
the mm_inc_nr_puds() and mm_inc_nr_pmds in init_new_context().
The pgtable_bytes will be off by 16384 or 32768 bytes and we get the
BUG message. The message itself is purely cosmetic, but annoying.
To fix this override the mm_pmd_folded, mm_pud_folded and mm_p4d_folded
function to check for the true size of the address space.
Reported-by: Li Wang <liwang@redhat.com>
Tested-by: Li Wang <liwang@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The common mm code calls mm_dec_nr_pmds() and mm_dec_nr_puds()
in free_pgtables() if the address range spans a full pud or pmd.
If mm_dec_nr_puds/mm_dec_nr_pmds are non-empty due to configuration
settings they blindly subtract the size of the pmd or pud table from
pgtable_bytes even if the pud or pmd page table layer is folded.
Add explicit mm_[pmd|pud]_folded checks to the four pgtable_bytes
accounting functions mm_inc_nr_puds, mm_inc_nr_pmds, mm_dec_nr_puds
and mm_dec_nr_pmds. As the check for folded page tables can be
overwritten by the architecture, this allows to keep a correct
pgtable_bytes value for platforms that use a dynamic number of
page table levels.
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Add three architecture overrideable functions to test if the
p4d, pud, or pmd layer of a page table is folded or not.
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Change the currently empty defines for __PAGETABLE_PMD_FOLDED,
__PAGETABLE_PUD_FOLDED and __PAGETABLE_P4D_FOLDED to return 1.
This makes it possible to use __is_defined() to test if the
preprocessor define exists.
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Trivial fix to clean up an indentation issue, remove space
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Pull misc vfs updates from Al Viro:
"No common topic, really - a handful of assorted stuff; the least
trivial bits are Mark's dedupe patches"
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs/exofs: only use true/false for asignment of bool type variable
fs/exofs: fix potential memory leak in mount option parsing
Delete invalid assignment statements in do_sendfile
iomap: remove duplicated include from iomap.c
vfs: dedupe should return EPERM if permission is not granted
vfs: allow dedupe of user owned read-only files
ntfs: don't open-code ERR_CAST
ext4: don't open-code ERR_CAST
Pull AFS updates from Al Viro:
"AFS series, with some iov_iter bits included"
* 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (26 commits)
missing bits of "iov_iter: Separate type from direction and use accessor functions"
afs: Probe multiple fileservers simultaneously
afs: Fix callback handling
afs: Eliminate the address pointer from the address list cursor
afs: Allow dumping of server cursor on operation failure
afs: Implement YFS support in the fs client
afs: Expand data structure fields to support YFS
afs: Get the target vnode in afs_rmdir() and get a callback on it
afs: Calc callback expiry in op reply delivery
afs: Fix FS.FetchStatus delivery from updating wrong vnode
afs: Implement the YFS cache manager service
afs: Remove callback details from afs_callback_break struct
afs: Commit the status on a new file/dir/symlink
afs: Increase to 64-bit volume ID and 96-bit vnode ID for YFS
afs: Don't invoke the server to read data beyond EOF
afs: Add a couple of tracepoints to log I/O errors
afs: Handle EIO from delivery function
afs: Fix TTL on VL server and address lists
afs: Implement VL server rotation
afs: Improve FS server rotation error handling
...
- Fix flickering at low backlight levels on some systems
- Fix some overclocking regressions
- Vega20 updates for
- GPU recovery fixes
- Disable gfxoff on RV as some sbios/fw combinations are not stable yet
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181101151939.2828-1-alexander.deucher@amd.com
- Add optional delay for panels without hpd hooked up (which solves the
mystery delay for TI SN65DSI86 bridge) (Doug)
- Another 6bpc quirk for BOE panel 0x0771 (Shawn)
Cc: Doug Anderson <dianders@chromium.org>
Cc: Lee, Shawn C <shawn.c.lee@intel.com>
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Merge tag 'drm-misc-next-fixes-2018-10-31' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
- Properly label Innolux TV123WAM as P120ZDG-BF1 (Doug)
- Add optional delay for panels without hpd hooked up (which solves the
mystery delay for TI SN65DSI86 bridge) (Doug)
- Another 6bpc quirk for BOE panel 0x0771 (Shawn)
Cc: Doug Anderson <dianders@chromium.org>
Cc: Lee, Shawn C <shawn.c.lee@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20181031201944.GA262020@art_vandelay
brd_free() may be called in failure path on one brd instance which
disk isn't added yet, so release handler of gendisk may free the
associated request_queue early and causes the following use-after-free[1].
This patch fixes this issue by associating gendisk with request_queue
just before adding disk.
[1] KASAN: use-after-free Read in del_timer_syncNon-volatile memory driver v1.3
Linux agpgart interface v0.103
[drm] Initialized vgem 1.0.0 20120112 for virtual device on minor 0
usbcore: registered new interface driver udl
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x36d9/0x4c20
kernel/locking/lockdep.c:3218
Read of size 8 at addr ffff8801d1b6b540 by task swapper/0/1
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0+ #88
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+0x244/0x39d lib/dump_stack.c:113
print_address_description.cold.7+0x9/0x1ff mm/kasan/report.c:256
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report.cold.8+0x242/0x309 mm/kasan/report.c:412
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
__lock_acquire+0x36d9/0x4c20 kernel/locking/lockdep.c:3218
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
del_timer_sync+0xb7/0x270 kernel/time/timer.c:1283
blk_cleanup_queue+0x413/0x710 block/blk-core.c:809
brd_free+0x5d/0x71 drivers/block/brd.c:422
brd_init+0x2eb/0x393 drivers/block/brd.c:518
do_one_initcall+0x145/0x957 init/main.c:890
do_initcall_level init/main.c:958 [inline]
do_initcalls init/main.c:966 [inline]
do_basic_setup init/main.c:984 [inline]
kernel_init_freeable+0x5c6/0x6b9 init/main.c:1148
kernel_init+0x11/0x1ae init/main.c:1068
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
Reported-by: syzbot+3701447012fe951dabb2@syzkaller.appspotmail.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This is an effort to disentangle the include/linux/compiler*.h headers
and bring them up to date.
The main idea behind the series is to use feature checking macros
(i.e. __has_attribute) instead of compiler version checks (e.g. GCC_VERSION),
which are compiler-agnostic (so they can be shared, reducing the size
of compiler-specific headers) and version-agnostic.
Other related improvements have been performed in the headers as well,
which on top of the use of __has_attribute it has amounted to a significant
simplification of these headers (e.g. GCC_VERSION is now only guarding
a few non-attribute macros).
This series should also help the efforts to support compiling the kernel
with clang and icc. A fair amount of documentation and comments have also
been added, clarified or removed; and the headers are now more readable,
which should help kernel developers in general.
The series was triggered due to the move to gcc >= 4.6. In turn, this series
has also triggered Sparse to gain the ability to recognize __has_attribute
on its own.
Finally, the __nonstring variable attribute series has been also applied
on top; plus two related patches from Nick Desaulniers for unreachable()
that came a bit afterwards.
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Merge tag 'compiler-attributes-for-linus-4.20-rc1' of https://github.com/ojeda/linux
Pull compiler attribute updates from Miguel Ojeda:
"This is an effort to disentangle the include/linux/compiler*.h headers
and bring them up to date.
The main idea behind the series is to use feature checking macros
(i.e. __has_attribute) instead of compiler version checks (e.g.
GCC_VERSION), which are compiler-agnostic (so they can be shared,
reducing the size of compiler-specific headers) and version-agnostic.
Other related improvements have been performed in the headers as well,
which on top of the use of __has_attribute it has amounted to a
significant simplification of these headers (e.g. GCC_VERSION is now
only guarding a few non-attribute macros).
This series should also help the efforts to support compiling the
kernel with clang and icc. A fair amount of documentation and comments
have also been added, clarified or removed; and the headers are now
more readable, which should help kernel developers in general.
The series was triggered due to the move to gcc >= 4.6. In turn, this
series has also triggered Sparse to gain the ability to recognize
__has_attribute on its own.
Finally, the __nonstring variable attribute series has been also
applied on top; plus two related patches from Nick Desaulniers for
unreachable() that came a bit afterwards"
* tag 'compiler-attributes-for-linus-4.20-rc1' of https://github.com/ojeda/linux:
compiler-gcc: remove comment about gcc 4.5 from unreachable()
compiler.h: update definition of unreachable()
Compiler Attributes: ext4: remove local __nonstring definition
Compiler Attributes: auxdisplay: panel: use __nonstring
Compiler Attributes: enable -Wstringop-truncation on W=1 (gcc >= 8)
Compiler Attributes: add support for __nonstring (gcc >= 8)
Compiler Attributes: add MAINTAINERS entry
Compiler Attributes: add Doc/process/programming-language.rst
Compiler Attributes: remove uses of __attribute__ from compiler.h
Compiler Attributes: KENTRY used twice the "used" attribute
Compiler Attributes: use feature checks instead of version checks
Compiler Attributes: add missing SPDX ID in compiler_types.h
Compiler Attributes: remove unneeded sparse (__CHECKER__) tests
Compiler Attributes: homogenize __must_be_array
Compiler Attributes: remove unneeded tests
Compiler Attributes: always use the extra-underscores syntax
Compiler Attributes: remove unused attributes
This patch updates defconfig using savedefconfig on Linux-4.19. It is
intended to have no functional change.
Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Pull keys updates from James Morris:
"Provide five new operations in the key_type struct that can be used to
provide access to asymmetric key operations. These will be implemented
for the asymmetric key type in a later patch and may refer to a key
retained in RAM by the kernel or a key retained in crypto hardware.
int (*asym_query)(const struct kernel_pkey_params *params,
struct kernel_pkey_query *info);
int (*asym_eds_op)(struct kernel_pkey_params *params,
const void *in, void *out);
int (*asym_verify_signature)(struct kernel_pkey_params *params,
const void *in, const void *in2);
Since encrypt, decrypt and sign are identical in their interfaces,
they're rolled together in the asym_eds_op() operation and there's an
operation ID in the params argument to distinguish them.
Verify is different in that we supply the data and the signature
instead and get an error value (or 0) as the only result on the
expectation that this may well be how a hardware crypto device may
work"
* 'next-keys2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (22 commits)
KEYS: asym_tpm: Add support for the sign operation [ver #2]
KEYS: asym_tpm: Implement tpm_sign [ver #2]
KEYS: asym_tpm: Implement signature verification [ver #2]
KEYS: asym_tpm: Implement the decrypt operation [ver #2]
KEYS: asym_tpm: Implement tpm_unbind [ver #2]
KEYS: asym_tpm: Add loadkey2 and flushspecific [ver #2]
KEYS: Move trusted.h to include/keys [ver #2]
KEYS: trusted: Expose common functionality [ver #2]
KEYS: asym_tpm: Implement encryption operation [ver #2]
KEYS: asym_tpm: Implement pkey_query [ver #2]
KEYS: Add parser for TPM-based keys [ver #2]
KEYS: asym_tpm: extract key size & public key [ver #2]
KEYS: asym_tpm: add skeleton for asym_tpm [ver #2]
crypto: rsa-pkcs1pad: Allow hash to be optional [ver #2]
KEYS: Implement PKCS#8 RSA Private Key parser [ver #2]
KEYS: Implement encrypt, decrypt and sign for software asymmetric key [ver #2]
KEYS: Allow the public_key struct to hold a private key [ver #2]
KEYS: Provide software public key query function [ver #2]
KEYS: Make the X.509 and PKCS7 parsers supply the sig encoding type [ver #2]
KEYS: Provide missing asymmetric key subops for new key type ops [ver #2]
...
sunrpc patches from nfs tree conflict with calling conventions change done
in iov_iter work. Trivial fixup...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'ovl-update-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
"A mix of fixes and cleanups"
* tag 'ovl-update-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: automatically enable redirect_dir on metacopy=on
ovl: check whiteout in ovl_create_over_whiteout()
ovl: using posix_acl_xattr_size() to get size instead of posix_acl_to_xattr()
ovl: abstract ovl_inode lock with a helper
ovl: remove the 'locked' argument of ovl_nlink_{start,end}
ovl: relax requirement for non null uuid of lower fs
ovl: fold copy-up helpers into callers
ovl: untangle copy up call chain
ovl: relax permission checking on underlying layers
ovl: fix recursive oi->lock in ovl_link()
vfs: fix FIGETBSZ ioctl on an overlayfs file
ovl: clean up error handling in ovl_get_tmpfile()
ovl: fix error handling in ovl_verify_set_fh()
- Fix cpu node iterator for powerpc systems
- Clarify ARM CPU binding 'capacities-dmips-mhz' property calculations
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Merge tag 'devicetree-fixes-for-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull Devicetree fixes from Rob Herring:
- fix cpu node iterator for powerpc systems
- clarify ARM CPU binding 'capacities-dmips-mhz' property calculations
* tag 'devicetree-fixes-for-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: Fix cpu node iterator to not ignore disabled cpu nodes
dt-bindings: arm: Explain capacities-dmips-mhz calculations in example
virtio balloon page hinting support
vhost scsi control queue
misc fixes.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio/vhost updates from Michael Tsirkin:
"Fixes and tweaks:
- virtio balloon page hinting support
- vhost scsi control queue
- misc fixes"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
MAINTAINERS: remove reference to bogus vsock file
vhost/scsi: Use common handling code in request queue handler
vhost/scsi: Extract common handling code from control queue handler
vhost/scsi: Respond to control queue operations
vhost/scsi: truncate T10 PI iov_iter to prot_bytes
virtio-balloon: VIRTIO_BALLOON_F_PAGE_POISON
mm/page_poison: expose page_poisoning_enabled to kernel modules
virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT
kvm_config: add CONFIG_VIRTIO_MENU
- use ZONE_NORMAL instead of ZONE_DMA;
- fix Image.elf build error caused by assignment of incorrect address
to the .note.Linux section;
- clean up debug and property sections in the vmlinux.lds.S.
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Merge tag 'xtensa-20181101' of git://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa fixes and cleanups from Max Filippov:
- use ZONE_NORMAL instead of ZONE_DMA
- fix Image.elf build error caused by assignment of incorrect address
to the .note.Linux section
- clean up debug and property sections in the vmlinux.lds.S
* tag 'xtensa-20181101' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: clean up xtensa-specific property sections
xtensa: use DWARF_DEBUG in the vmlinux.lds.S
xtensa: add NOTES section to the linker script
xtensa: remove ZONE_DMA
In most cases, nodes with 'status = "disabled";' are treated as if the
node is not present though it is a common bug to forget to check that.
However, cpu nodes are different in that "disabled" simply means offline
and the OS can bring the CPU core online. Commit f1f207e43b ("of: Add
cpu node iterator for_each_of_cpu_node()") followed the common behavior
of ignoring disabled cpu nodes. This breaks some powerpc systems (at
least NXP P50XX/e5500). Fix this by dropping the status check.
Fixes: 651d44f967 ("of: use for_each_of_cpu_node iterator")
Fixes: f1f207e43b ("of: Add cpu node iterator for_each_of_cpu_node()")
Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Most callers of pskb_trim_rcsum() simply drop the skb when
it fails, however, ip_check_defrag() still continues to pass
the skb up to stack. This is suspicious.
In ip_check_defrag(), after we learn the skb is an IP fragment,
passing the skb to callers makes no sense, because callers expect
fragments are defrag'ed on success. So, dropping the skb when we
can't defrag it is reasonable.
Note, prior to commit 88078d98d1, this is not a big problem as
checksum will be fixed up anyway. After it, the checksum is not
correct on failure.
Found this during code review.
Fixes: 88078d98d1 ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Current behavior is to automatically disable metacopy if redirect_dir is
not enabled and proceed with the mount.
If "metacopy=on" mount option was given, then this behavior can confuse the
user: no mount failure, yet metacopy is disabled.
This patch makes metacopy=on imply redirect_dir=on.
The converse is also true: turning off full redirect with redirect_dir=
{off|follow|nofollow} will disable metacopy.
If both metacopy=on and redirect_dir={off|follow|nofollow} is specified,
then mount will fail, since there's no way to correctly resolve the
conflict.
Reported-by: Daniel Walsh <dwalsh@redhat.com>
Fixes: d5791044d2 ("ovl: Provide a mount option metacopy=on/off...")
Cc: <stable@vger.kernel.org> # v4.19
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
- Introduces the stackleak gcc plugin ported from grsecurity by Alexander
Popov, with x86 and arm64 support.
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Merge tag 'stackleak-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull stackleak gcc plugin from Kees Cook:
"Please pull this new GCC plugin, stackleak, for v4.20-rc1. This plugin
was ported from grsecurity by Alexander Popov. It provides efficient
stack content poisoning at syscall exit. This creates a defense
against at least two classes of flaws:
- Uninitialized stack usage. (We continue to work on improving the
compiler to do this in other ways: e.g. unconditional zero init was
proposed to GCC and Clang, and more plugin work has started too).
- Stack content exposure. By greatly reducing the lifetime of valid
stack contents, exposures via either direct read bugs or unknown
cache side-channels become much more difficult to exploit. This
complements the existing buddy and heap poisoning options, but
provides the coverage for stacks.
The x86 hooks are included in this series (which have been reviewed by
Ingo, Dave Hansen, and Thomas Gleixner). The arm64 hooks have already
been merged through the arm64 tree (written by Laura Abbott and
reviewed by Mark Rutland and Will Deacon).
With VLAs having been removed this release, there is no need for
alloca() protection, so it has been removed from the plugin"
* tag 'stackleak-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
arm64: Drop unneeded stackleak_check_alloca()
stackleak: Allow runtime disabling of kernel stack erasing
doc: self-protection: Add information about STACKLEAK feature
fs/proc: Show STACKLEAK metrics in the /proc file system
lkdtm: Add a test for STACKLEAK
gcc-plugins: Add STACKLEAK plugin for tracking the kernel stack
x86/entry: Add STACKLEAK erasing the kernel stack at the end of syscalls
Trivial fix to a spelling mistake of the error access name EACCESS,
rename to EACCES
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
The seq_send & seq_send64 fields in struct krb5_ctx are used as
atomically incrementing counters. This is implemented using cmpxchg() &
cmpxchg64() to implement what amount to custom versions of
atomic_fetch_inc() & atomic64_fetch_inc().
Besides the duplication, using cmpxchg64() has another major drawback in
that some 32 bit architectures don't provide it. As such commit
571ed1fd23 ("SUNRPC: Replace krb5_seq_lock with a lockless scheme")
resulted in build failures for some architectures.
Change seq_send to be an atomic_t and seq_send64 to be an atomic64_t,
then use atomic(64)_* functions to manipulate the values. The atomic64_t
type & associated functions are provided even on architectures which
lack real 64 bit atomic memory access via CONFIG_GENERIC_ATOMIC64 which
uses spinlocks to serialize access. This fixes the build failures for
architectures lacking cmpxchg64().
A potential alternative that was raised would be to provide cmpxchg64()
on the 32 bit architectures that currently lack it, using spinlocks.
However this would provide a version of cmpxchg64() with semantics a
little different to the implementations on architectures with real 64
bit atomics - the spinlock-based implementation would only work if all
access to the memory used with cmpxchg64() is *always* performed using
cmpxchg64(). That is not currently a requirement for users of
cmpxchg64(), and making it one seems questionable. As such avoiding
cmpxchg64() outside of architecture-specific code seems best,
particularly in cases where atomic64_t seems like a better fit anyway.
The CONFIG_GENERIC_ATOMIC64 implementation of atomic64_* functions will
use spinlocks & so faces the same issue, but with the key difference
that the memory backing an atomic64_t ought to always be accessed via
the atomic64_* functions anyway making the issue moot.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: 571ed1fd23 ("SUNRPC: Replace krb5_seq_lock with a lockless scheme")
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: J. Bruce Fields <bfields@fieldses.org>
Cc: Jeff Layton <jlayton@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: linux-nfs@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Pull i2c fixes from Wolfram Sang:
"I2C has a core bugfix & cleanup as well as an ID addition and
MAINTAINERS update for you"
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: add maintainer for IMX LPI2C driver
dt-bindings: i2c: i2c-imx-lpi2c: add imx8qxp compatible string
i2c: Clear client->irq in i2c_device_remove
i2c: Remove unnecessary call to irq_find_mapping
Pull percpu fixes from Dennis Zhou:
"Two small things for v4.20.
The first fixes a clang uninitialized variable warning for arm64 in
the default path calls BUILD_BUG(). The second removes an unnecessary
unlikely() in a WARN_ON() use"
* 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
arm64: percpu: Initialize ret in the default case
mm: percpu: remove unnecessary unlikely()
Pull networking fixes from David Miller:
1) BPF verifier fixes from Daniel Borkmann.
2) HNS driver fixes from Huazhong Tan.
3) FDB only works for ethernet devices, reject attempts to install FDB
rules for others. From Ido Schimmel.
4) Fix spectre V1 in vhost, from Jason Wang.
5) Don't pass on-stack object to irq_set_affinity_hint() in mvpp2
driver, from Marc Zyngier.
6) Fix mlx5e checksum handling when RXFCS is enabled, from Eric
Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (49 commits)
openvswitch: Fix push/pop ethernet validation
net: stmmac: Fix stmmac_mdio_reset() when building stmmac as modules
bpf: test make sure to run unpriv test cases in test_verifier
bpf: add various test cases to test_verifier
bpf: don't set id on after map lookup with ptr_to_map_val return
bpf: fix partial copy of map_ptr when dst is scalar
libbpf: Fix compile error in libbpf_attach_type_by_name
kselftests/bpf: use ping6 as the default ipv6 ping binary if it exists
selftests: mlxsw: qos_mc_aware: Add a test for UC awareness
selftests: mlxsw: qos_mc_aware: Tweak for min shaper
mlxsw: spectrum: Set minimum shaper on MC TCs
mlxsw: reg: QEEC: Add minimum shaper fields
net: hns3: bugfix for rtnl_lock's range in the hclgevf_reset()
net: hns3: bugfix for rtnl_lock's range in the hclge_reset()
net: hns3: bugfix for handling mailbox while the command queue reinitialized
net: hns3: fix incorrect return value/type of some functions
net: hns3: bugfix for hclge_mdio_write and hclge_mdio_read
net: hns3: bugfix for is_valid_csq_clean_head()
net: hns3: remove unnecessary queue reset in the hns3_uninit_all_ring()
net: hns3: bugfix for the initialization of command queue's spin lock
...
Pull sparc fixes from David Miller:
"Two small fixes"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Wire up compat getpeername and getsockname.
sparc64: Remvoe set_fs() from perf_callchain_user().
These patches are complementary to "C-SKY(csky) Port for Linux 4.20" and
fixup dtb Kbuild to follow the new Devicetree dtb build rules.
Link: https://lore.kernel.org/lkml/CABGGisxiWaQn9qDqpfxEWcckkGJfMzFvSPGvuhQK7oB404-6DQ@mail.gmail.com/
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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Merge tag 'csky-for-linus-4.20-fixup-dtb' of https://github.com/c-sky/csky-linux
Pull csky dtb fixups from Guo Ren:
"These fix the csky dtb Kbuild to follow the new Devicetree dtb build
rules"
* tag 'csky-for-linus-4.20-fixup-dtb' of https://github.com/c-sky/csky-linux:
csky: use common dtb build rules
csky: remove builtin-dtb Kbuild
Move the Dell dcdbas and dell_rbu drivers into platform/drivers/x86 as
they are closely coupled with other drivers in this location.
Improve _init* usage for acerhdf and fix some usage issues with messages
and module parameters.
Simplify asus-wmi by calling ACPI/WMI methods directly, eliminating
workqueue overhead, eliminate double reporting of keyboard backlight.
Fix wake from USB failure on Bay Trail devices (intel_int0002_vgpio).
Notify intel_telemetry users when IPC1 device is not enabled.
Update various drivers with new laptop model IDs.
Update several intel drivers to use SPDX identifers and order headers
alphabetically.
The following is an automated git shortlog grouped by driver:
Add Intel AtomISP2 dummy / power-management driver:
- Add Intel AtomISP2 dummy / power-management driver
lg-laptop:
- Add LG Gram laptop special features driver
HID:
- asus: only support backlight when it's not driven by WMI
MAINTAINERS:
- intel_telemetry: Update maintainers info
- intel_pmc_core: Update MAINTAINERS
- Update maintainer for dcdbas and dell_rbu
- Use my infradead account exclusively for PDx86 work
acerhdf:
- restructure to allow large BIOS table be __initconst
- mark appropriate content with __init prefix
- Add BIOS entry for Gateway LT31 v1.3307
- Remove cut-and-paste trap from instructions
- Enable ability to list supported systems
- clarify modinfo messages for BIOS override
asus-wmi:
- export function for evaluating WMI methods
- Only notify kbd LED hw_change by fn-key pressed
- Simplify the keyboard brightness updating process
firmware:
- dcdbas: include linux/io.h
- dcdbas: Move dcdbas to drivers/platform/x86
- dell_rbu: Move dell_rbu to drivers/platform/x86
- dcdbas: Add support for WSMT ACPI table
- dell_rbu: Make payload memory uncachable
ideapad-laptop:
- Add Y530-15ICH to no_hw_rfkill
- Use __func__ instead of read_ec_cmd in pr_err
intel-hid:
- Convert to use SPDX identifier
intel-ips:
- Convert to use SPDX identifier
intel-rst:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel-smartconnect:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel-wmi-thunderbolt:
- Add dynamic debugging
- Convert to use SPDX identifier
intel_bxtwc_tmu:
- Convert to use SPDX identifier
intel_cht_int33fe:
- Convert to use SPDX identifier
intel_chtdc_ti_pwrbtn:
- Add SPDX identifier
intel_int0002_vgpio:
- Convert to use SPDX identifier
- Implement irq_set_wake
- Enable the driver on Bay Trail platforms
intel_menlow:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel_mid_powerbtn:
- Convert to use SPDX identifier
- Remove unnecessary init.h inclusion
- Get rid of custom ICPU() macro
intel_mid_thermal:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel_oaktrail:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel_pmc:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel_punit_ipc:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel_scu_ipc:
- Convert to use SPDX identifier
- Sort headers alphabetically
intel_telemetry:
- Get rid of custom macro
- report debugfs failure
- Convert to use SPDX identifier
intel_turbo_max_3:
- Convert to use SPDX identifier
- Sort headers alphabetically
mlx-platform:
- Properly use mlxplat_mlxcpld_msn201x_items
touchscreen_dmi:
- Add min-x and min-y settings for various models
- Add info for the Onda V80 Plus v3 tablet
- Add info for the Trekstor Primetab T13B tablet
- Add info for the Trekstor Primebook C11 convertible
tracing:
- Trivia spelling fix containerof() -> container_of()
wmi:
- declare device_type structure as constant
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Merge tag 'platform-drivers-x86-v4.20-1' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart:
- Move the Dell dcdbas and dell_rbu drivers into platform/drivers/x86
as they are closely coupled with other drivers in this location.
- Improve _init* usage for acerhdf and fix some usage issues with
messages and module parameters.
- Simplify asus-wmi by calling ACPI/WMI methods directly, eliminating
workqueue overhead, eliminate double reporting of keyboard backlight.
- Fix wake from USB failure on Bay Trail devices (intel_int0002_vgpio).
- Notify intel_telemetry users when IPC1 device is not enabled.
- Update various drivers with new laptop model IDs.
- Update several intel drivers to use SPDX identifers and order headers
alphabetically.
* tag 'platform-drivers-x86-v4.20-1' of git://git.infradead.org/linux-platform-drivers-x86: (64 commits)
HID: asus: only support backlight when it's not driven by WMI
platform/x86: asus-wmi: export function for evaluating WMI methods
platform/x86: asus-wmi: Only notify kbd LED hw_change by fn-key pressed
platform/x86: wmi: declare device_type structure as constant
platform/x86: ideapad: Add Y530-15ICH to no_hw_rfkill
platform/x86: Add Intel AtomISP2 dummy / power-management driver
platform/x86: touchscreen_dmi: Add min-x and min-y settings for various models
platform/x86: touchscreen_dmi: Add info for the Onda V80 Plus v3 tablet
platform/x86: touchscreen_dmi: Add info for the Trekstor Primetab T13B tablet
platform/x86: intel_telemetry: Get rid of custom macro
platform/x86: intel_telemetry: report debugfs failure
MAINTAINERS: intel_telemetry: Update maintainers info
platform/x86: Add LG Gram laptop special features driver
platform/x86: asus-wmi: Simplify the keyboard brightness updating process
platform/x86: touchscreen_dmi: Add info for the Trekstor Primebook C11 convertible
platform/x86: mlx-platform: Properly use mlxplat_mlxcpld_msn201x_items
MAINTAINERS: intel_pmc_core: Update MAINTAINERS
firmware: dcdbas: include linux/io.h
platform/x86: intel-wmi-thunderbolt: Add dynamic debugging
platform/x86: intel-wmi-thunderbolt: Convert to use SPDX identifier
...
with CONFIG_ environment variable.
merge_config.sh uses CONFIG_ which is used in kernel and other projects.
There are some projects which use kconfig with different prefixes (e.g.
buildroot: BR2_ prefix). CONFIG_ variable is already used for this
purpose in kconfig binary (scripts/kconfig/lkc.h), let's use the same
rule for in merge_config.sh.
Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The last user of cc-fullversion was removed by commit f2910f0e68
("powerpc: remove old GCC version checks").
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
As commit 911a91c39c ("kconfig: rename silentoldconfig to
syncconfig") announced, it is time for the removal.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
As commit 312ee68752 ("kconfig: announce removal of oldnoconfig if
used") announced, it is time for the removal.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Various powerpc boards select the PCI_MSI config option without selecting
PCI, resulting in potentially not compilable configurations if the by
default enabled PCI option is disabled. Explicitly select PCI to ensure
we always have valid configs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This option isn't actually used anywhere.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
We plan to enable building the PCMCIA core and drivers, and the
non-prefixed PCMCIA name clashes with some arch headers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This is still completely breaking my Raven system.
This reverts commit cdf2f910fa969adca1b0e3ad2b487821233dc038.
Revert until we sort out the sbios and firmware combinations that work
correctly.
bug: https://bugs.freedesktop.org/show_bug.cgi?id=108606
Cc: stable@vger.kernel.org # v4.19
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
print warning in dmesg to notify user the setting for
sclk_od/mclk_od out of range that vbios can support
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
not update dpm table with user's setting.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Masahiro Yamada
Justin M. Forbes
Vasily Gorbik
Thomas Richter
Martin Schwidefsky
Colin Ian King
John Johansen
Dave Airlie
Linus Torvalds
Dennis Zhou
Ming Lei
Anup Patel
Al Viro
Rob Herring
Cong Wang
Miklos Szeredi
Paul Burton
Petr Vorel
Christoph Hellwig
Christian König
Rex Zhu