| Age | Commit message (Collapse) | Author |
|---|
|
Building the kernel with O= is affected by stale in-tree build artifacts.
So, if the source tree is not clean, Kbuild displays the following:
$ make ARCH=um O=build defconfig
make[1]: Entering directory '/.../linux/build'
***
*** The source tree is not clean, please run 'make ARCH=um mrproper'
*** in /.../linux
***
make[2]: *** [/.../linux/Makefile:673: outputmakefile] Error 1
make[1]: *** [/.../linux/Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/.../linux/build'
make: *** [Makefile:248: __sub-make] Error 2
Usually, running 'make mrproper' is sufficient for cleaning the source
tree for out-of-tree builds.
However, building UML generates build artifacts not only in arch/um/,
but also in the SUBARCH directory (i.e., arch/x86/). If in-tree stale
files remain under arch/x86/, Kbuild will reuse them instead of creating
new ones under the specified build directory.
This commit makes 'make ARCH=um clean' recurse into the SUBARCH directory.
Reported-by: Shuah Khan <skhan@linuxfoundation.org>
Closes: https://lore.kernel.org/lkml/20250502172459.14175-1-skhan@linuxfoundation.org/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
|
|
A new on by default warning in clang [1] aims to flags instances where
const variables without static or thread local storage or const members
in aggregate types are not initialized because it can lead to an
indeterminate value. This is quite noisy for the kernel due to
instances originating from header files such as:
drivers/gpu/drm/i915/gt/intel_ring.h:62:2: error: default initialization of an object of type 'typeof (ring->size)' (aka 'const unsigned int') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe]
62 | typecheck(typeof(ring->size), next);
| ^
include/linux/typecheck.h:10:9: note: expanded from macro 'typecheck'
10 | ({ type __dummy; \
| ^
include/net/ip.h:478:14: error: default initialization of an object of type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe]
478 | if (mtu && time_before(jiffies, rt->dst.expires))
| ^
include/linux/jiffies.h:138:26: note: expanded from macro 'time_before'
138 | #define time_before(a,b) time_after(b,a)
| ^
include/linux/jiffies.h:128:3: note: expanded from macro 'time_after'
128 | (typecheck(unsigned long, a) && \
| ^
include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck'
11 | typeof(x) __dummy2; \
| ^
include/linux/list.h:409:27: warning: default initialization of an object of type 'union (unnamed union at include/linux/list.h:409:27)' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe]
409 | struct list_head *next = smp_load_acquire(&head->next);
| ^
include/asm-generic/barrier.h:176:29: note: expanded from macro 'smp_load_acquire'
176 | #define smp_load_acquire(p) __smp_load_acquire(p)
| ^
arch/arm64/include/asm/barrier.h:164:59: note: expanded from macro '__smp_load_acquire'
164 | union { __unqual_scalar_typeof(*p) __val; char __c[1]; } __u; \
| ^
include/linux/list.h:409:27: note: member '__val' declared 'const' here
crypto/scatterwalk.c:66:22: error: default initialization of an object of type 'struct scatter_walk' with const member leaves the object uninitialized [-Werror,-Wdefault-const-init-field-unsafe]
66 | struct scatter_walk walk;
| ^
include/crypto/algapi.h:112:15: note: member 'addr' declared 'const' here
112 | void *const addr;
| ^
fs/hugetlbfs/inode.c:733:24: error: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Werror,-Wdefault-const-init-field-unsafe]
733 | struct vm_area_struct pseudo_vma;
| ^
include/linux/mm_types.h:803:20: note: member 'vm_flags' declared 'const' here
803 | const vm_flags_t vm_flags;
| ^
Silencing the instances from typecheck.h is difficult because '= {}' is
not available in older but supported compilers and '= {0}' would cause
warnings about a literal 0 being treated as NULL. While it might be
possible to come up with a local hack to silence the warning for
clang-21+, it may not be worth it since -Wuninitialized will still
trigger if an uninitialized const variable is actually used.
In all audited cases of the "field" variant of the warning, the members
are either not used in the particular call path, modified through other
means such as memset() / memcpy() because the containing object is not
const, or are within a union with other non-const members.
Since this warning does not appear to have a high signal to noise ratio,
just disable it.
Cc: stable@vger.kernel.org
Link: https://github.com/llvm/llvm-project/commit/576161cb6069e2c7656a8ef530727a0f4aefff30 [1]
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/CA+G9fYuNjKcxFKS_MKPRuga32XbndkLGcY-PVuoSwzv6VWbY=w@mail.gmail.com/
Reported-by: Marcus Seyfarth <m.seyfarth@gmail.com>
Closes: https://github.com/ClangBuiltLinux/linux/issues/2088
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
The dwarf.h header, which is included by
scripts/gendwarfksyms/gendwarfksyms.h, resides within elfutils-devel
or libdw-devel package.
This portion of the code is compiled under the condition that
CONFIG_GENDWARFKSYMS is enabled.
Consequently, add (elfutils-devel or libdw-devel) to BuildRequires to
prevent unforeseen compilation failures.
Fix follow possible error:
In file included from scripts/gendwarfksyms/cache.c:6:
scripts/gendwarfksyms/gendwarfksyms.h:6:10: fatal error: 'dwarf.h' file not found
6 | #include <dwarf.h>
| ^~~~~~~~~
Link: https://lore.kernel.org/all/3e52d80d-0c60-4df5-8cb5-21d4b1fce7b7@suse.com/
Fixes: f28568841ae0 ("tools: Add gendwarfksyms")
Suggested-by: Petr Pavlu <petr.pavlu@suse.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
The dwarf.h header, which is included by
scripts/gendwarfksyms/gendwarfksyms.h, resides within the libdw-dev
package.
This portion of the code is compiled under the condition that
CONFIG_GENDWARFKSYMS is enabled.
Consequently, add libdw-dev to Build-Depends-Arch to prevent
unforeseen compilation failures.
Fix follow possible error:
In file included from scripts/gendwarfksyms/symbols.c:6:
scripts/gendwarfksyms/gendwarfksyms.h:6:10: fatal error: 'dwarf.h' file not found
6 | #include <dwarf.h>
| ^~~~~~~~~
Fixes: f28568841ae0 ("tools: Add gendwarfksyms")
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Tested-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
Since openrisc does not support PERF_EVENTS, omit the HDRTEST of
bpf_perf_event.h for arch/openrisc/.
Fixes a build error:
usr/include/linux/bpf_perf_event.h:14:28: error: field 'regs' has incomplete type
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
With CONFIG_GENDWARFKSYMS, __gendwarfksyms_ptr variables are
added to the kernel in EXPORT_SYMBOL() to ensure DWARF type
information is available for exported symbols in the TUs where
they're actually exported. These symbols are dropped when linking
vmlinux, but dangling references to them remain in DWARF.
With CONFIG_DEBUG_INFO_BTF enabled on X86, pahole versions after
commit 47dcb534e253 ("btf_encoder: Stop indexing symbols for
VARs") and before commit 9810758003ce ("btf_encoder: Verify 0
address DWARF variables are in ELF section") place these symbols
in the .data..percpu section, which results in an "Invalid
offset" error in btf_datasec_check_meta() during boot, as all
the variables are at zero offset and have non-zero size. If
CONFIG_DEBUG_INFO_BTF_MODULES is enabled, this also results in a
failure to load modules with:
failed to validate module [$module] BTF: -22
As the issue occurs in pahole v1.28 and the fix was merged
after v1.29 was released, require pahole <v1.28 or >v1.29 when
GENDWARFKSYMS is enabled with DEBUG_INFO_BTF on X86.
Reported-by: Paolo Pisati <paolo.pisati@canonical.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
crypto/testmgr.c is compiled only when CRYPTO_MANAGER is enabled. To
make CRYPTO_SELFTESTS work as expected when CRYPTO_MANAGER doesn't get
enabled for another reason, automatically set CRYPTO_MANAGER to the
value of CRYPTO_ALGAPI when CRYPTO_SELFTESTS is enabled.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
There is no reason for people configuring the kernel to be asked about
CRYPTO_MANAGER, so make it a hidden symbol.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Rename the noextratests module parameter to noslowtests, and replace
other remaining mentions of "extra" in the code with "slow". This
addresses confusion regarding the word "extra" like that seen at
https://lore.kernel.org/r/6cecf2de-9aa0-f6ea-0c2d-8e974a1a820b@huawei.com/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Currently the full set of crypto self-tests requires
CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y. This is problematic in two ways.
First, developers regularly overlook this option. Second, the
description of the tests as "extra" sometimes gives the impression that
it is not required that all algorithms pass these tests.
Given that the main use case for the crypto self-tests is for
developers, make enabling CONFIG_CRYPTO_SELFTESTS=y just enable the full
set of crypto self-tests by default.
The slow tests can still be disabled by adding the command-line
parameter cryptomgr.noextratests=1, soon to be renamed to
cryptomgr.noslowtests=1. The only known use case for doing this is for
people trying to use the crypto self-tests to satisfy the FIPS 140-3
pre-operational self-testing requirements when the kernel is being
validated as a FIPS 140-3 cryptographic module.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
The negative-sense of CRYPTO_MANAGER_DISABLE_TESTS is a longstanding
mistake that regularly causes confusion. Especially bad is that you can
have CRYPTO=n && CRYPTO_MANAGER_DISABLE_TESTS=n, which is ambiguous.
Replace CRYPTO_MANAGER_DISABLE_TESTS with CRYPTO_SELFTESTS which has the
expected behavior.
The tests continue to be disabled by default.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
The cryptomgr.panic_on_fail=1 kernel command-line parameter is not very
useful now that the tests have been fixed to WARN on failure, since
developers can just use panic_on_warn=1 instead. There's no need for a
special option just for the crypto self-tests. Remove it.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
tcrypt is actually a benchmarking module and not the actual tests. This
regularly causes confusion. Update the kconfig option name and help
text accordingly.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Make null_skcipher_crypt() use memcpy_sglist() instead of the
skcipher_walk API, as this is simpler.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
There is no reason to have separate CRYPTO_NULL2 and CRYPTO_NULL
options. Just merge them into CRYPTO_NULL.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
crypto_get_default_null_skcipher() and
crypto_put_default_null_skcipher() are no longer used, so remove them.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
The krb5enc code does not use any of the so-called "null algorithms", so
it does not need to select CRYPTO_NULL. Presumably this unused
dependency got copied from one of the other kconfig options.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
For copying data between two scatterlists, just use memcpy_sglist()
instead of the so-called "null skcipher". This is much simpler.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
For copying data between two scatterlists, just use memcpy_sglist()
instead of the so-called "null skcipher". This is much simpler.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
For copying data between two scatterlists, just use memcpy_sglist()
instead of the so-called "null skcipher". This is much simpler.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
For copying data between two scatterlists, just use memcpy_sglist()
instead of the so-called "null skcipher". This is much simpler.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Add explicit array bounds to the function prototypes for the parameters
that didn't already get handled by the conversion to use chacha_state:
- chacha_block_*():
Change 'u8 *out' or 'u8 *stream' to u8 out[CHACHA_BLOCK_SIZE].
- hchacha_block_*():
Change 'u32 *out' or 'u32 *stream' to u32 out[HCHACHA_OUT_WORDS].
- chacha_init():
Change 'const u32 *key' to 'const u32 key[CHACHA_KEY_WORDS]'.
Change 'const u8 *iv' to 'const u8 iv[CHACHA_IV_SIZE]'.
No functional changes. This just makes it clear when fixed-size arrays
are expected.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Now that the ChaCha state matrix is strongly-typed, add a helper
function chacha_zeroize_state() which zeroizes it. Then convert all
applicable callers to use it instead of direct memzero_explicit. No
functional changes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
Use struct assignment instead of memcpy() in lib/crypto/chacha.c where
appropriate. No functional change.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
The ChaCha state matrix is 16 32-bit words. Currently it is represented
in the code as a raw u32 array, or even just a pointer to u32. This
weak typing is error-prone. Instead, introduce struct chacha_state:
struct chacha_state {
u32 x[16];
};
Convert all ChaCha and HChaCha functions to use struct chacha_state.
No functional changes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
The hash implementation in crypto4xx has been disabled since 2009.
As nobody has tried to fix this remove all the dead code.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
|
htmdump_init calls is_kvm_guest() to check for guest environment.
is_kvm_guest() is defined in kvm_guest.h header file. Without including
the header file, build hits error failing to find the function.
arch/powerpc/platforms/pseries/htmdump.c: In function 'htmdump_init':
arch/powerpc/platforms/pseries/htmdump.c:469:6: error: implicit declaration of function 'is_kvm_guest';
did you mean '__key_get'? [-Werror=implicit-function-declaration]
if (is_kvm_guest()) {
^~~~~~~~~~~~
__key_get
This is observed in configs where CONFIG_KVM_GUEST is disabled.
Include header file explicitly to avoid the build error
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505061324.elUl4njU-lkp@intel.com/
Signed-off-by: Athira Rajeev <atrajeev@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250506135232.69014-1-atrajeev@linux.ibm.com
|
|
The commit 9576730d0e6e ("KVM: PPC: select IRQ_BYPASS_MANAGER") enabled
IRQ_BYPASS_MANAGER when CONFIG_KVM was set. Subsequently, commit
c57875f5f9be ("KVM: PPC: Book3S HV: Enable IRQ bypass") enabled IRQ
bypass and added the necessary callbacks to create/remove the mappings
between host real IRQ and the guest GSI.
The availability of IRQ bypass is determined by the arch-specific
function kvm_arch_has_irq_bypass(), which invokes
kvmppc_irq_bypass_add_producer_hv(). This function, in turn, calls
kvmppc_set_passthru_irq_hv() to create a mapping in the passthrough IRQ
map, associating a host IRQ to a guest GSI.
However, when a pSeries KVM guest (L2) is booted within an LPAR (L1)
with the kernel boot parameter `xive=off`, it defaults to using emulated
XICS controller. As an attempt to establish host IRQ to guest GSI
mappings via kvmppc_set_passthru_irq() on a PCI device hotplug
(passhthrough) operation fail, returning -ENOENT. This failure occurs
because only interrupts with EOI operations handled through OPAL calls
(verified via is_pnv_opal_msi()) are currently supported.
These mapping failures lead to below repeated warnings in the L1 host:
[ 509.220349] kvmppc_set_passthru_irq_hv: Could not assign IRQ map for (58,4970)
[ 509.220368] kvmppc_set_passthru_irq (irq 58, gsi 4970) fails: -2
[ 509.220376] vfio-pci 0015:01:00.0: irq bypass producer (token 0000000090bc635b) registration fails: -2
...
[ 509.291781] vfio-pci 0015:01:00.0: irq bypass producer (token 000000003822eed8) registration fails: -2
Fix this by restricting IRQ bypass enablement on pSeries systems by
making the IRQ bypass callbacks unavailable when running on pSeries
platform.
Signed-off-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Reviewed-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250425185641.1611857-1-amachhiw@linux.ibm.com
|
|
8xx has three large page sizes: 8M, 512k and 16k.
A too big alignment can lead to wasting memory. On a board which has
only 32 MBytes of RAM, every single byte is worth it and a 512k
alignment is sometimes too much.
Allow mapping kernel memory with 16k pages and reduce the constraint
on kernel memory alignment. 512k and 16k pages are handled the same
way so reverse tests in order to make 8M pages the special case and
other ones (512k and 16k) the alternative.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/fa9927b70df13627cdf10b992ea71d6562c7760e.1746191262.git.christophe.leroy@csgroup.eu
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 cBPF BHB mitigation from James Morse:
"This adds the BHB mitigation into the code JITted for cBPF programs as
these can be loaded by unprivileged users via features like seccomp.
The existing mechanisms to disable the BHB mitigation will also
prevent the mitigation being JITted. In addition, cBPF programs loaded
by processes with the SYS_ADMIN capability are not mitigated as these
could equally load an eBPF program that does the same thing.
For good measure, the list of 'k' values for CPU's local mitigations
is updated from the version on arm's website"
* tag 'arm64_cbpf_mitigation_2025_05_08' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: proton-pack: Add new CPUs 'k' values for branch mitigation
arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs
arm64: proton-pack: Expose whether the branchy loop k value
arm64: proton-pack: Expose whether the platform is mitigated by firmware
arm64: insn: Add support for encoding DSB
|
|
As David pointed out, what truly matters for mremap and userfaultfd move
operations is the soft dirty bit. The current comment and
implementation—which always sets the dirty bit for present PTEs and
fails to set the soft dirty bit for swap PTEs—are incorrect. This could
break features like Checkpoint-Restore in Userspace (CRIU).
This patch updates the behavior to correctly set the soft dirty bit for
both present and swap PTEs in accordance with mremap.
Link: https://lkml.kernel.org/r/20250508220912.7275-1-21cnbao@gmail.com
Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI")
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Reported-by: David Hildenbrand <david@redhat.com>
Closes: https://lore.kernel.org/linux-mm/02f14ee1-923f-47e3-a994-4950afb9afcc@redhat.com/
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Cc: Lokesh Gidra <lokeshgidra@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Do not mix class->size and object size during offsets/sizes calculation in
zs_obj_write(). Size classes can merge into clusters, based on
objects-per-zspage and pages-per-zspage characteristics, so some size
classes can store objects smaller than class->size. This becomes
problematic when object size is much smaller than class->size. zsmalloc
can falsely decide that object spans two physical pages, because a larger
class->size value is used for that check, while the actual object is much
smaller and fits the free space of the first physical page, so there is
nothing to write to the second page and memcpy() size calculation
underflows.
Unable to handle kernel paging request at virtual address ffffc00081ff4000
pc : __memcpy+0x10/0x24
lr : zs_obj_write+0x1b0/0x1d0 [zsmalloc]
Call trace:
__memcpy+0x10/0x24 (P)
zram_write_page+0x150/0x4fc [zram]
zram_submit_bio+0x5e0/0x6a4 [zram]
__submit_bio+0x168/0x220
submit_bio_noacct_nocheck+0x128/0x2c8
submit_bio_noacct+0x19c/0x2f8
This is mostly seen on system with larger page-sizes, because size class
cluters of such systems hold wider size ranges than on 4K PAGE_SIZE
systems.
Assume a 16K PAGE_SIZE system, a write of 820 bytes object to a 864-bytes
size class at offset 15560. 15560 + 864 is more than 16384 so zsmalloc
attempts to memcpy() it to two physical pages. However, 16384 - 15560 =
824 which is more than 820, so the object in fact doesn't span two
physical pages, and there is no data to write to the second physical page.
We always know the exact size in bytes of the object that we are about to
write (store), so use it instead of class->size.
Link: https://lkml.kernel.org/r/20250507054312.4135983-1-senozhatsky@chromium.org
Fixes: 44f76413496e ("zsmalloc: introduce new object mapping API")
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reported-by: Igor Belousov <igor.b@beldev.am>
Tested-by: Igor Belousov <igor.b@beldev.am>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
The page allocator tracks the number of zones that have unaccepted memory
using static_branch_enc/dec() and uses that static branch in hot paths to
determine if it needs to deal with unaccepted memory.
Borislav and Thomas pointed out that the tracking is racy: operations on
static_branch are not serialized against adding/removing unaccepted pages
to/from the zone.
Sanity checks inside static_branch machinery detects it:
WARNING: CPU: 0 PID: 10 at kernel/jump_label.c:276 __static_key_slow_dec_cpuslocked+0x8e/0xa0
The comment around the WARN() explains the problem:
/*
* Warn about the '-1' case though; since that means a
* decrement is concurrent with a first (0->1) increment. IOW
* people are trying to disable something that wasn't yet fully
* enabled. This suggests an ordering problem on the user side.
*/
The effect of this static_branch optimization is only visible on
microbenchmark.
Instead of adding more complexity around it, remove it altogether.
Link: https://lkml.kernel.org/r/20250506133207.1009676-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Fixes: dcdfdd40fa82 ("mm: Add support for unaccepted memory")
Link: https://lore.kernel.org/all/20250506092445.GBaBnVXXyvnazly6iF@fat_crate.local
Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org> [6.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
try_alloc_pages() will not attempt to allocate memory if the system has
*any* unaccepted memory. Memory is accepted as needed and can remain in
the system indefinitely, causing the interface to always fail.
Rather than immediately giving up, attempt to use already accepted memory
on free lists.
Pass 'alloc_flags' to cond_accept_memory() and do not accept new memory
for ALLOC_TRYLOCK requests.
Found via code inspection - only BPF uses this at present and the
runtime effects are unclear.
Link: https://lkml.kernel.org/r/20250506112509.905147-2-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Fixes: 97769a53f117 ("mm, bpf: Introduce try_alloc_pages() for opportunistic page allocation")
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
As part of the ongoing efforts to sub-divide memory management
maintainership and reviewership, establish a section for GUP (Get User
Pages) support and add appropriate maintainers and reviewers.
Link: https://lkml.kernel.org/r/20250506173601.97562-1-lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Commit 51ff4d7486f0 ("mm: avoid extra mem_alloc_profiling_enabled()
checks") introduces a possible use-after-free scenario, when page
is non-compound, page[0] could be released by other thread right
after put_page_testzero failed in current thread, pgalloc_tag_sub_pages
afterwards would manipulate an invalid page for accounting remaining
pages:
[timeline] [thread1] [thread2]
| alloc_page non-compound
V
| get_page, rf counter inc
V
| in ___free_pages
| put_page_testzero fails
V
| put_page, page released
V
| in ___free_pages,
| pgalloc_tag_sub_pages
| manipulate an invalid page
V
Restore __free_pages() to its state before, retrieve alloc tag
beforehand.
Link: https://lkml.kernel.org/r/20250505193034.91682-1-00107082@163.com
Fixes: 51ff4d7486f0 ("mm: avoid extra mem_alloc_profiling_enabled() checks")
Signed-off-by: David Wang <00107082@163.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
The following WARNING was triggered during swap stress test with mTHP
enabled:
[ 6609.335758] ------------[ cut here ]------------
[ 6609.337758] WARNING: CPU: 82 PID: 755116 at mm/memory.c:3794 do_wp_page+0x1084/0x10e0
[ 6609.340922] Modules linked in: zram virtiofs
[ 6609.342699] CPU: 82 UID: 0 PID: 755116 Comm: sh Kdump: loaded Not tainted 6.15.0-rc1+ #1429 PREEMPT(voluntary)
[ 6609.347620] Hardware name: Red Hat KVM/RHEL-AV, BIOS 0.0.0 02/06/2015
[ 6609.349909] RIP: 0010:do_wp_page+0x1084/0x10e0
[ 6609.351532] Code: ff ff 48 c7 c6 80 ba 49 82 4c 89 ef e8 95 fd fe ff 0f 0b bd f5 ff ff ff e9 43 fb ff ff 41 83 a9 bc 12 00 00 01 e9 5c fb ff ff <0f> 0b e9 a6 fc ff ff 65 ff 00 f0 48 0f b
a 6d 00 1f 0f 83 82 fc ff
[ 6609.357959] RSP: 0000:ffffc90002273d40 EFLAGS: 00010287
[ 6609.359915] RAX: 000000000000000f RBX: 0000000000000000 RCX: 000fffffffe00000
[ 6609.362606] RDX: 0000000000000010 RSI: 000055a119ac1000 RDI: ffffea000ae6ec00
[ 6609.365143] RBP: ffffea000ae6ec68 R08: 84000002b9bb1025 R09: 000055a119ab6000
[ 6609.367569] R10: ffff8881caa2ad80 R11: 0000000000000000 R12: ffff8881caa2ad80
[ 6609.370255] R13: ffffea000ae6ec00 R14: 000055a119ac1c9c R15: ffffc90002273dd8
[ 6609.373007] FS: 00007f08e467f740(0000) GS:ffff88a07c214000(0000) knlGS:0000000000000000
[ 6609.375999] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6609.377946] CR2: 000055a119ac1c9c CR3: 00000001adfd6005 CR4: 0000000000770eb0
[ 6609.380376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6609.382853] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6609.385216] PKRU: 55555554
[ 6609.386141] Call Trace:
[ 6609.387017] <TASK>
[ 6609.387718] ? ___pte_offset_map+0x1b/0x110
[ 6609.389056] __handle_mm_fault+0xa51/0xf00
[ 6609.390363] ? exc_page_fault+0x6a/0x140
[ 6609.391629] handle_mm_fault+0x13d/0x360
[ 6609.392856] do_user_addr_fault+0x2f2/0x7f0
[ 6609.394160] ? sigprocmask+0x77/0xa0
[ 6609.395375] exc_page_fault+0x6a/0x140
[ 6609.396735] asm_exc_page_fault+0x26/0x30
[ 6609.398224] RIP: 0033:0x55a1050bc18b
[ 6609.399567] Code: 8b 3f 4d 85 ff 74 40 41 39 5f 18 75 f2 49 8b 7f 08 44 38 27 75 e9 4c 89 c6 4c 89 45 c8 e8 bd 83 fa ff 4c 8b 45 c8 85 c0 75 d5 <41> 83 47 1c 01 48 83 c4 28 4c 89 f8 5b 4
1 5c 41 5d 41 5e 41 5f 5d
[ 6609.405971] RSP: 002b:00007ffcf5f37d90 EFLAGS: 00010246
[ 6609.407737] RAX: 0000000000000000 RBX: 00000000182768fa RCX: 0000000000000000
[ 6609.410151] RDX: 00000000000000fa RSI: 000055a105175c7b RDI: 000055a119ac1c60
[ 6609.412606] RBP: 00007ffcf5f37de0 R08: 000055a105175c7b R09: 0000000000000000
[ 6609.414998] R10: 000000004d2dfb5a R11: 0000000000000246 R12: 0000000000000050
[ 6609.417193] R13: 00000000000000fa R14: 000055a119abaf60 R15: 000055a119ac1c80
[ 6609.419268] </TASK>
[ 6609.419928] ---[ end trace 0000000000000000 ]---
The WARN_ON here is simply incorrect. The refcount here must be at least
the mapcount, not the opposite. Each mapcount must have a corresponding
refcount, but the refcount may increase if other components grab the
folio, which is acceptable. Meanwhile, having a mapcount larger than
refcount is a real problem.
So fix the WARN_ON condition.
Link: https://lkml.kernel.org/r/20250425074325.61833-1-ryncsn@gmail.com
Fixes: 1da190f4d0a6 ("mm: Copy-on-Write (COW) reuse support for PTE-mapped THP")
Signed-off-by: Kairui Song <kasong@tencent.com>
Reported-by: Kairui Song <kasong@tencent.com>
Closes: https://lore.kernel.org/all/CAMgjq7D+ea3eg9gRCVvRnto3Sv3_H3WVhupX4e=k8T5QAfBHbw@mail.gmail.com/
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Not intuitive, but vm_area_dup() located in kernel/fork.c is not only used
for duplicating VMAs during fork(), but also for duplicating VMAs when
splitting VMAs or when mremap()'ing them.
VM_PFNMAP mappings can at least get ordinarily mremap()'ed (no change in
size) and apparently also shrunk during mremap(), which implies
duplicating the VMA in __split_vma() first.
In case of ordinary mremap() (no change in size), we first duplicate the
VMA in copy_vma_and_data()->copy_vma() to then call untrack_pfn_clear() on
the old VMA: we effectively move the VM_PAT reservation. So the
untrack_pfn_clear() call on the new VMA duplicating is wrong in that
context.
Splitting of VMAs seems problematic, because we don't duplicate/adjust the
reservation when splitting the VMA. Instead, in memtype_erase() -- called
during zapping/munmap -- we shrink a reservation in case only the end
address matches: Assume we split a VMA into A and B, both would share a
reservation until B is unmapped.
So when unmapping B, the reservation would be updated to cover only A.
When unmapping A, we would properly remove the now-shrunk reservation.
That scenario describes the mremap() shrinking (old_size > new_size),
where we split + unmap B, and the untrack_pfn_clear() on the new VMA when
is wrong.
What if we manage to split a VM_PFNMAP VMA into A and B and unmap A first?
It would be broken because we would never free the reservation. Likely,
there are ways to trigger such a VMA split outside of mremap().
Affecting other VMA duplication was not intended, vm_area_dup() being used
outside of kernel/fork.c was an oversight. So let's fix that for; how to
handle VMA splits better should be investigated separately.
With a simple reproducer that uses mprotect() to split such a VMA I can
trigger
x86/PAT: pat_mremap:26448 freeing invalid memtype [mem 0x00000000-0x00000fff]
Link: https://lkml.kernel.org/r/20250422144942.2871395-1-david@redhat.com
Fixes: dc84bc2aba85 ("x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range()")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
During our testing with hugetlb subpool enabled, we observe that
hstate->resv_huge_pages may underflow into negative values. Root cause
analysis reveals a race condition in subpool reservation fallback handling
as follow:
hugetlb_reserve_pages()
/* Attempt subpool reservation */
gbl_reserve = hugepage_subpool_get_pages(spool, chg);
/* Global reservation may fail after subpool allocation */
if (hugetlb_acct_memory(h, gbl_reserve) < 0)
goto out_put_pages;
out_put_pages:
/* This incorrectly restores reservation to subpool */
hugepage_subpool_put_pages(spool, chg);
When hugetlb_acct_memory() fails after subpool allocation, the current
implementation over-commits subpool reservations by returning the full
'chg' value instead of the actual allocated 'gbl_reserve' amount. This
discrepancy propagates to global reservations during subsequent releases,
eventually causing resv_huge_pages underflow.
This problem can be trigger easily with the following steps:
1. reverse hugepage for hugeltb allocation
2. mount hugetlbfs with min_size to enable hugetlb subpool
3. alloc hugepages with two task(make sure the second will fail due to
insufficient amount of hugepages)
4. with for a few seconds and repeat step 3 which will make
hstate->resv_huge_pages to go below zero.
To fix this problem, return corrent amount of pages to subpool during the
fallback after hugepage_subpool_get_pages is called.
Link: https://lkml.kernel.org/r/20250410062633.3102457-1-mawupeng1@huawei.com
Fixes: 1c5ecae3a93f ("hugetlbfs: add minimum size accounting to subpools")
Signed-off-by: Wupeng Ma <mawupeng1@huawei.com>
Tested-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Ma Wupeng <mawupeng1@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 ITS mitigation from Dave Hansen:
"Mitigate Indirect Target Selection (ITS) issue.
I'd describe this one as a good old CPU bug where the behavior is
_obviously_ wrong, but since it just results in bad predictions it
wasn't wrong enough to notice. Well, the researchers noticed and also
realized that thus bug undermined a bunch of existing indirect branch
mitigations.
Thus the unusually wide impact on this one. Details:
ITS is a bug in some Intel CPUs that affects indirect branches
including RETs in the first half of a cacheline. Due to ITS such
branches may get wrongly predicted to a target of (direct or indirect)
branch that is located in the second half of a cacheline. Researchers
at VUSec found this behavior and reported to Intel.
Affected processors:
- Cascade Lake, Cooper Lake, Whiskey Lake V, Coffee Lake R, Comet
Lake, Ice Lake, Tiger Lake and Rocket Lake.
Scope of impact:
- Guest/host isolation:
When eIBRS is used for guest/host isolation, the indirect branches
in the VMM may still be predicted with targets corresponding to
direct branches in the guest.
- Intra-mode using cBPF:
cBPF can be used to poison the branch history to exploit ITS.
Realigning the indirect branches and RETs mitigates this attack
vector.
- User/kernel:
With eIBRS enabled user/kernel isolation is *not* impacted by ITS.
- Indirect Branch Prediction Barrier (IBPB):
Due to this bug indirect branches may be predicted with targets
corresponding to direct branches which were executed prior to IBPB.
This will be fixed in the microcode.
Mitigation:
As indirect branches in the first half of cacheline are affected, the
mitigation is to replace those indirect branches with a call to thunk that
is aligned to the second half of the cacheline.
RETs that take prediction from RSB are not affected, but they may be
affected by RSB-underflow condition. So, RETs in the first half of
cacheline are also patched to a return thunk that executes the RET aligned
to second half of cacheline"
* tag 'its-for-linus-20250509' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftest/x86/bugs: Add selftests for ITS
x86/its: FineIBT-paranoid vs ITS
x86/its: Use dynamic thunks for indirect branches
x86/ibt: Keep IBT disabled during alternative patching
mm/execmem: Unify early execmem_cache behaviour
x86/its: Align RETs in BHB clear sequence to avoid thunking
x86/its: Add support for RSB stuffing mitigation
x86/its: Add "vmexit" option to skip mitigation on some CPUs
x86/its: Enable Indirect Target Selection mitigation
x86/its: Add support for ITS-safe return thunk
x86/its: Add support for ITS-safe indirect thunk
x86/its: Enumerate Indirect Target Selection (ITS) bug
Documentation: x86/bugs/its: Add ITS documentation
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 IBTI mitigation from Dave Hansen:
"Mitigate Intra-mode Branch History Injection via classic BFP programs
This adds the branch history clearing mitigation to cBPF programs for
x86. Intra-mode BHI attacks via cBPF a.k.a IBTI-History was reported
by researchers at VUSec.
For hardware that doesn't support BHI_DIS_S, the recommended
mitigation is to run the short software sequence followed by the IBHF
instruction after cBPF execution. On hardware that does support
BHI_DIS_S, enable BHI_DIS_S and execute the IBHF after cBPF execution.
The Indirect Branch History Fence (IBHF) is a new instruction that
prevents indirect branch target predictions after the barrier from
using branch history from before the barrier while BHI_DIS_S is
enabled. On older systems this will map to a NOP. It is recommended to
add this fence at the end of the cBPF program to support VM migration.
This instruction is required on newer parts with BHI_NO to fully
mitigate against these attacks.
The current code disables the mitigation for anything running with the
SYS_ADMIN capability bit set. The intention was not to waste time
mitigating a process that has access to anything it wants anyway"
* tag 'ibti-hisory-for-linus-2025-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bhi: Do not set BHI_DIS_S in 32-bit mode
x86/bpf: Add IBHF call at end of classic BPF
x86/bpf: Call branch history clearing sequence on exit
|
|
|
|
Pull KVM fixes from Paolo Bonzini:
"ARM:
- Avoid use of uninitialized memcache pointer in user_mem_abort()
- Always set HCR_EL2.xMO bits when running in VHE, allowing
interrupts to be taken while TGE=0 and fixing an ugly bug on
AmpereOne that occurs when taking an interrupt while clearing the
xMO bits (AC03_CPU_36)
- Prevent VMMs from hiding support for AArch64 at any EL virtualized
by KVM
- Save/restore the host value for HCRX_EL2 instead of restoring an
incorrect fixed value
- Make host_stage2_set_owner_locked() check that the entire requested
range is memory rather than just the first page
RISC-V:
- Add missing reset of smstateen CSRs
x86:
- Forcibly leave SMM on SHUTDOWN interception on AMD CPUs to avoid
causing problems due to KVM stuffing INIT on SHUTDOWN (KVM needs to
sanitize the VMCB as its state is undefined after SHUTDOWN,
emulating INIT is the least awful choice).
- Track the valid sync/dirty fields in kvm_run as a u64 to ensure KVM
KVM doesn't goof a sanity check in the future.
- Free obsolete roots when (re)loading the MMU to fix a bug where
pre-faulting memory can get stuck due to always encountering a
stale root.
- When dumping GHCB state, use KVM's snapshot instead of the raw GHCB
page to print state, so that KVM doesn't print stale/wrong
information.
- When changing memory attributes (e.g. shared <=> private), add
potential hugepage ranges to the mmu_invalidate_range_{start,end}
set so that KVM doesn't create a shared/private hugepage when the
the corresponding attributes will become mixed (the attributes are
commited *after* KVM finishes the invalidation).
- Rework the SRSO mitigation to enable BP_SPEC_REDUCE only when KVM
has at least one active VM. Effectively BP_SPEC_REDUCE when KVM is
loaded led to very measurable performance regressions for non-KVM
workloads"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: SVM: Set/clear SRSO's BP_SPEC_REDUCE on 0 <=> 1 VM count transitions
KVM: arm64: Fix memory check in host_stage2_set_owner_locked()
KVM: arm64: Kill HCRX_HOST_FLAGS
KVM: arm64: Properly save/restore HCRX_EL2
KVM: arm64: selftest: Don't try to disable AArch64 support
KVM: arm64: Prevent userspace from disabling AArch64 support at any virtualisable EL
KVM: arm64: Force HCR_EL2.xMO to 1 at all times in VHE mode
KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()
KVM: x86/mmu: Prevent installing hugepages when mem attributes are changing
KVM: SVM: Update dump_ghcb() to use the GHCB snapshot fields
KVM: RISC-V: reset smstateen CSRs
KVM: x86/mmu: Check and free obsolete roots in kvm_mmu_reload()
KVM: x86: Check that the high 32bits are clear in kvm_arch_vcpu_ioctl_run()
KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- Fix delayed timers
- Fix NULL pointer deref
- Fix wrong range check
* tag 'mips-fixes_6.15_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: Fix MAX_REG_OFFSET
MIPS: CPS: Fix potential NULL pointer dereferences in cps_prepare_cpus()
MIPS: rename rollback_handler with skipover_handler
MIPS: Move r4k_wait() to .cpuidle.text section
MIPS: Fix idle VS timer enqueue
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar:
"Fix a boot regression on very old x86 CPUs without CPUID support"
* tag 'x86-urgent-2025-05-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Consolidate the loader enablement checking
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc timers fixes from Ingo Molnar:
- Fix time keeping bugs in CLOCK_MONOTONIC_COARSE clocks
- Work around absolute relocations into vDSO code that GCC erroneously
emits in certain arm64 build environments
- Fix a false positive lockdep warning in the i8253 clocksource driver
* tag 'timers-urgent-2025-05-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/i8253: Use raw_spinlock_irqsave() in clockevent_i8253_disable()
arm64: vdso: Work around invalid absolute relocations from GCC
timekeeping: Prevent coarse clocks going backwards
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- Synaptics touchpad on multiple laptops (Dynabook Portege X30L-G,
Dynabook Portege X30-D, TUXEDO InfinityBook Pro 14 v5, Dell Precision
M3800, HP Elitebook 850 G1) switched from PS/2 to SMBus mode
- a number of new controllers added to xpad driver: HORI Drum
controller, PowerA Fusion Pro 4, PowerA MOGA XP-Ultra controller,
8BitDo Ultimate 2 Wireless Controller, 8BitDo Ultimate 3-mode
Controller, Hyperkin DuchesS Xbox One controller
- fixes to xpad driver to properly handle Mad Catz JOYTECH NEO SE
Advanced and PDP Mirror's Edge Official controllers
- fixes to xpad driver to properly handle "Share" button on some
controllers
- a fix for device initialization timing and for waking up the
controller in cyttsp5 driver
- a fix for hisi_powerkey driver to properly wake up from s2idle state
- other assorted cleanups and fixes
* tag 'input-for-v6.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: xpad - fix xpad_device sorting
Input: xpad - add support for several more controllers
Input: xpad - fix Share button on Xbox One controllers
Input: xpad - fix two controller table values
Input: hisi_powerkey - enable system-wakeup for s2idle
Input: synaptics - enable InterTouch on Dell Precision M3800
Input: synaptics - enable InterTouch on TUXEDO InfinityBook Pro 14 v5
Input: synaptics - enable InterTouch on Dynabook Portege X30L-G
Input: synaptics - enable InterTouch on Dynabook Portege X30-D
Input: synaptics - enable SMBus for HP Elitebook 850 G1
Input: mtk-pmic-keys - fix possible null pointer dereference
Input: xpad - add support for 8BitDo Ultimate 2 Wireless Controller
Input: cyttsp5 - fix power control issue on wakeup
MAINTAINERS: .mailmap: update Mattijs Korpershoek's email address
dt-bindings: mediatek,mt6779-keypad: Update Mattijs' email address
Input: stmpe-ts - use module alias instead of device table
Input: cyttsp5 - ensure minimum reset pulse width
Input: sparcspkr - avoid unannotated fall-through
input/joystick: magellan: Mark __nonstring look-up table
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fixes from Mike Rapoport:
- Mark set_high_memory() as __init to fix section mismatch
- Accept memory allocated in memblock_double_array() to mitigate crash
of SNP guests
* tag 'fixes-2025-05-11' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
memblock: Accept allocated memory before use in memblock_double_array()
mm,mm_init: Mark set_high_memory as __init
|
|
s/devince/device/
It's used only internally, so no any behavior changes.
Fixes: 37e0e14128e0 ("ALSA: ump: Support UMP Endpoint and Function Block parsing")
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20250511141147.10246-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
|
|
The acpi_handle should be just a handle and not a pointer in
sdw_intel_acpi_scan() parameter list.
It is called with 'acpi_handle handle' as parameter and it is passing it to
acpi_walk_namespace, which also expects acpi_handle and not acpi_handle*
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://patch.msgid.link/20250508181207.22113-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
|
