- 29 Feb, 2024 3 commits
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Kees Cook authored
Provide helpers that will perform wrapping addition, subtraction, or multiplication without tripping the arithmetic wrap-around sanitizers. The first argument is the type under which the wrap-around should happen with. In other words, these two calls will get very different results: wrapping_mul(int, 50, 50) == 2500 wrapping_mul(u8, 50, 50) == 196 Add to the selftests to validate behavior and lack of side-effects. Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Marco Elver <elver@google.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
The check_*_overflow() helpers will return results with potentially wrapped-around values. These values have always been checked by the selftests, so avoid the confusing language in the kern-doc. The idea of "safe for use" was relative to the expectation of whether or not the caller wants a wrapped value -- the calculation itself will always follow arithmetic wrapping rules. Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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Andy Shevchenko authored
The wordpart.h header is collecting APIs related to the handling parts of the word (usually in byte granularity). The upper_*_bits() and lower_*_bits() are good candidates to be moved to there. This helps to clean up header dependency hell with regard to kernel.h as the latter gathers completely unrelated stuff together and slows down compilation (especially when it's included into other header). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240214172752.3605073-1-andriy.shevchenko@linux.intel.comReviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Kees Cook <keescook@chromium.org>
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- 21 Feb, 2024 8 commits
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Marco Elver authored
KFENCE is not a security mitigation mechanism (due to sampling), but has the performance characteristics of unintrusive hardening techniques. When used at scale, however, it improves overall security by allowing kernel developers to detect heap memory-safety bugs cheaply. Link: https://lkml.kernel.org/r/79B9A832-B3DE-4229-9D87-748B2CFB7D12@kernel.org Cc: Matthieu Baerts <matttbe@kernel.org> Cc: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20240212130116.997627-1-elver@google.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Lukas Bulwahn authored
Commit 94f8f319 ("drm: Remove Kconfig option for legacy support (CONFIG_DRM_LEGACY)") removes the config DRM_LEGACY, but one reference to that config is left in the hardening.config fragment. As there is no drm legacy driver left, we do not need to recommend this attack surface reduction anymore. Drop this reference in hardening.config fragment. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Link: https://lore.kernel.org/r/20240208091045.9219-3-lukas.bulwahn@gmail.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Lukas Bulwahn authored
Commit 7a628f818499 ("ubsan: Remove CONFIG_UBSAN_SANITIZE_ALL") removes the config UBSAN_SANITIZE_ALL, but one reference to that config is left in the hardening.config fragment. Drop this reference in hardening.config fragment. Note that CONFIG_UBSAN is still enabled in the hardening.config fragment, so the functionality when using this fragment remains the same. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Link: https://lore.kernel.org/r/20240208091045.9219-2-lukas.bulwahn@gmail.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
The ARCH=um build has its own idea about strscpy()'s definition. Adjust the callers to remove the redundant sizeof() arguments ahead of treewide changes, since it needs a manual adjustment for the newly named sized_strscpy() export. Cc: Richard Weinberger <richard@nod.at> Cc: linux-um@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
Similar to strscpy(), update strscpy_pad()'s 3rd argument to be optional when the destination is a compile-time known size array. Cc: Andy Shevchenko <andy@kernel.org> Cc: <linux-hardening@vger.kernel.org> Reviewed-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
Using sizeof(dst) for the "size" argument in strscpy() is the overwhelmingly common case. Instead of requiring this everywhere, allow a 2-argument version to be used that will use the sizeof() internally. There are other functions in the kernel with optional arguments[1], so this isn't unprecedented, and improves readability. Update and relocate the kern-doc for strscpy() too, and drop __HAVE_ARCH_STRSCPY as it is unused. Adjust ARCH=um build to notice the changed export name, as it doesn't do full header includes for the string helpers. This could additionally let us save a few hundred lines of code: 1177 files changed, 2455 insertions(+), 3026 deletions(-) with a treewide cleanup using Coccinelle: @needless_arg@ expression DST, SRC; @@ strscpy(DST, SRC -, sizeof(DST) ) Link: https://elixir.bootlin.com/linux/v6.7/source/include/linux/pci.h#L1517 [1] Reviewed-by: Justin Stitt <justinstitt@google.com> Cc: Andy Shevchenko <andy@kernel.org> Cc: linux-hardening@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
In preparation for making strscpy_pad()'s 3rd argument optional, redefine it as a macro. This also has the benefit of allowing greater FORITFY introspection, as it couldn't see into the strscpy() nor the memset() within strscpy_pad(). Cc: Andy Shevchenko <andy@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <linux-hardening@vger.kernel.org> Reviewed-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
In order to mitigate unexpected signed wrap-around[1], bring back the signed integer overflow sanitizer. It was removed in commit 6aaa31ae ("ubsan: remove overflow checks") because it was effectively a no-op when combined with -fno-strict-overflow (which correctly changes signed overflow from being "undefined" to being explicitly "wrap around"). Compilers are adjusting their sanitizers to trap wrap-around and to detecting common code patterns that should not be instrumented (e.g. "var + offset < var"). Prepare for this and explicitly rename the option from "OVERFLOW" to "WRAP" to more accurately describe the behavior. To annotate intentional wrap-around arithmetic, the helpers wrapping_add/sub/mul_wrap() can be used for individual statements. At the function level, the __signed_wrap attribute can be used to mark an entire function as expecting its signed arithmetic to wrap around. For a single object file the Makefile can use "UBSAN_SIGNED_WRAP_target.o := n" to mark it as wrapping, and for an entire directory, "UBSAN_SIGNED_WRAP := n" can be used. Additionally keep these disabled under CONFIG_COMPILE_TEST for now. Link: https://github.com/KSPP/linux/issues/26 [1] Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Hao Luo <haoluo@google.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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- 06 Feb, 2024 4 commits
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Kees Cook authored
For simplicity in splitting out UBSan options into separate rules, remove CONFIG_UBSAN_SANITIZE_ALL, effectively defaulting to "y", which is how it is generally used anyway. (There are no ":= y" cases beyond where a specific file is enabled when a top-level ":= n" is in effect.) Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Marco Elver <elver@google.com> Cc: linux-doc@vger.kernel.org Cc: linux-kbuild@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
Silence a handful of W=1 warnings in the UBSan selftest, which set variables without using them. For example: lib/test_ubsan.c:101:6: warning: variable 'val1' set but not used [-Wunused-but-set-variable] 101 | int val1 = 10; | ^ Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202401310423.XpCIk6KO-lkp@intel.com/Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
Clang changed the way it enables UBSan trapping mode. Update the Makefile logic to discover it. Suggested-by: Fangrui Song <maskray@google.com> Link: https://lore.kernel.org/lkml/CAFP8O3JivZh+AAV7N90Nk7U2BHRNST6MRP0zHtfQ-Vj0m4+pDA@mail.gmail.com/Reviewed-by: Fangrui Song <maskray@google.com> Reviewed-by: Justin Stitt <justinstitt@google.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Bill Wendling <morbo@google.com> Cc: linux-kbuild@vger.kernel.org Cc: llvm@lists.linux.dev Signed-off-by: Kees Cook <keescook@chromium.org>
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Kees Cook authored
The kernel hardening efforts have continued to depend more and more heavily on UBSAN, so make an actual MAINTAINERS entry for it. Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Acked-by: Marco Elver <elver@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
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- 01 Feb, 2024 8 commits
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Harshit Mogalapalli authored
Syzkaller hit 'WARNING in dg_dispatch_as_host' bug. memcpy: detected field-spanning write (size 56) of single field "&dg_info->msg" at drivers/misc/vmw_vmci/vmci_datagram.c:237 (size 24) WARNING: CPU: 0 PID: 1555 at drivers/misc/vmw_vmci/vmci_datagram.c:237 dg_dispatch_as_host+0x88e/0xa60 drivers/misc/vmw_vmci/vmci_datagram.c:237 Some code commentry, based on my understanding: 544 #define VMCI_DG_SIZE(_dg) (VMCI_DG_HEADERSIZE + (size_t)(_dg)->payload_size) /// This is 24 + payload_size memcpy(&dg_info->msg, dg, dg_size); Destination = dg_info->msg ---> this is a 24 byte structure(struct vmci_datagram) Source = dg --> this is a 24 byte structure (struct vmci_datagram) Size = dg_size = 24 + payload_size {payload_size = 56-24 =32} -- Syzkaller managed to set payload_size to 32. 35 struct delayed_datagram_info { 36 struct datagram_entry *entry; 37 struct work_struct work; 38 bool in_dg_host_queue; 39 /* msg and msg_payload must be together. */ 40 struct vmci_datagram msg; 41 u8 msg_payload[]; 42 }; So those extra bytes of payload are copied into msg_payload[], a run time warning is seen while fuzzing with Syzkaller. One possible way to fix the warning is to split the memcpy() into two parts -- one -- direct assignment of msg and second taking care of payload. Gustavo quoted: "Under FORTIFY_SOURCE we should not copy data across multiple members in a structure." Reported-by: syzkaller <syzkaller@googlegroups.com> Suggested-by: Vegard Nossum <vegard.nossum@oracle.com> Suggested-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/20240105164001.2129796-2-harshit.m.mogalapalli@oracle.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Harshit Mogalapalli authored
Use struct_size() instead of open coding. Suggested-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20240105164001.2129796-1-harshit.m.mogalapalli@oracle.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Jingzi Meng authored
CAP_SYSLOG was separated from CAP_SYS_ADMIN and introduced in Linux 2.6.37 (2010-11). For a long time, certain syslog actions required CAP_SYS_ADMIN or CAP_SYSLOG. Maybe it’s time to officially remove CAP_SYS_ADMIN for more fine-grained control. CAP_SYS_ADMIN was once removed but added back for backwards compatibility reasons. In commit 38ef4c2e ("syslog: check cap_syslog when dmesg_restrict") (2010-12), CAP_SYS_ADMIN was no longer needed. And in commit ee24aebf ("cap_syslog: accept CAP_SYS_ADMIN for now") (2011-02), it was accepted again. Since then, CAP_SYS_ADMIN has been preserved. Now that almost 13 years have passed, the legacy application may have had enough time to be updated. Signed-off-by: Jingzi Meng <mengjingzi@iie.ac.cn> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20240105062007.26965-1-mengjingzi@iie.ac.cnSigned-off-by: Kees Cook <keescook@chromium.org>
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Tanzir Hasan authored
This diff uses an open source tool include-what-you-use (IWYU) to modify the include list, changing indirect includes to direct includes. IWYU is implemented using the IWYUScripts github repository which is a tool that is currently undergoing development. These changes seek to improve build times. This change to lib/string.c resulted in a preprocessed size of lib/string.i from 26371 lines to 5321 lines (-80%) for the x86 defconfig. Link: https://github.com/ClangBuiltLinux/IWYUScriptsReviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tanzir Hasan <tanzirh@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20231226-libstringheader-v6-2-80aa08c7652c@google.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Tanzir Hasan authored
This patch creates wordpart.h and includes it in asm/word-at-a-time.h for all architectures. WORD_AT_A_TIME_CONSTANTS depends on kernel.h because of REPEAT_BYTE. Moving this to another header and including it where necessary allows us to not include the bloated kernel.h. Making this implicit dependency on REPEAT_BYTE explicit allows for later improvements in the lib/string.c inclusion list. Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Tanzir Hasan <tanzirh@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20231226-libstringheader-v6-1-80aa08c7652c@google.comSigned-off-by: Kees Cook <keescook@chromium.org>
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Douglas Anderson authored
In commit edb6538da3df ("lkdtm/bugs: Adjust lkdtm_HUNG_TASK() to avoid tail call optimization") we marked lkdtm_HUNG_TASK() as __noreturn. The compiler gets unhappy if it thinks a __noreturn function might return, so there's a BUG_ON(1) at the end. Any human can see that the function won't return and the compiler can figure that out too. Except when it can't. The MIPS architecture defines HAVE_ARCH_BUG_ON and defines its own version of BUG_ON(). The MIPS version of BUG_ON() is not a macro but is instead an inline function. Apparently this prevents the compiler from realizing that the condition to BUG_ON() is constant and that the function will never return. Let's change the BUG_ON(1) to just BUG(), which it should have been to begin with. The only reason I used BUG_ON(1) to begin with was because I was used to using WARN_ON(1) when writing test code and WARN() and BUG() are oddly inconsistent in this manner. :-/ Fixes: edb6538da3df ("lkdtm/bugs: Adjust lkdtm_HUNG_TASK() to avoid tail call optimization") Signed-off-by: Douglas Anderson <dianders@chromium.org> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202401262204.wUFKRYZF-lkp@intel.com/Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20240126072852.1.Ib065e528a8620474a72f15baa2feead1f3d89865@changeidSigned-off-by: Kees Cook <keescook@chromium.org>
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Douglas Anderson authored
When testing with lkdtm_HUNG_TASK() and looking at the output, I expected to see lkdtm_HUNG_TASK() in the stack crawl but it wasn't there. Instead, the top function on at least some devices was schedule() due to tail call optimization. Let's do two things to help here: 1. We'll mark this as "__noreturn". On GCC at least this is documented to prevent tail call optimization. The docs [1] say "In order to preserve backtraces, GCC will never turn calls to noreturn functions into tail calls." 2. We'll add a BUG_ON(1) at the end which means that schedule() is no longer a tail call. Note that this is potentially important because if we _did_ end up returning from schedule() due to some weird issue then we'd potentially be violating the "noreturn" that we told the compiler about. BUG is the right thing to do here. [1] https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.htmlSigned-off-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20240122164935.2.I26e8f68c312824fcc80c19d4e91de2d2bef958f0@changeidSigned-off-by: Kees Cook <keescook@chromium.org>
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Douglas Anderson authored
The comments for lkdtm_do_action() explicitly call out that it shouldn't be inlined because we want it to show up in stack crawls. However, at least with some compilers / options it's still vanishing due to tail call optimization. Let's add a return value to the function to make it harder for the compiler to do tail call optimization here. Now that we have a return value, we can actually use it in the callers, which is a minor improvement in the code. Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20240122164935.1.I345e485f36babad76370c59659a706723750d950@changeidSigned-off-by: Kees Cook <keescook@chromium.org>
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- 29 Jan, 2024 1 commit
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Linus Torvalds authored
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- 28 Jan, 2024 7 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxlLinus Torvalds authored
Pull cxl fixes from Dan Williams: "A build regression fix, a device compatibility fix, and an original bug preventing creation of large (16 device) interleave sets: - Fix unit test build regression fallout from global "missing-prototypes" change - Fix compatibility with devices that do not support interrupts - Fix overflow when calculating the capacity of large interleave sets" * tag 'cxl-fixes-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl/region:Fix overflow issue in alloc_hpa() cxl/pci: Skip irq features if MSI/MSI-X are not supported tools/testing/nvdimm: Disable "missing prototypes / declarations" warnings tools/testing/cxl: Disable "missing prototypes / declarations" warnings
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds authored
Pull MIPS fixes from Thomas Bogendoerfer: - fix boot issue on single core Lantiq Danube devices - fix boot issue on Loongson64 platforms - fix improper FPU setup - fix missing prototypes issues * tag 'mips-fixes_6.8_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: mips: Call lose_fpu(0) before initializing fcr31 in mips_set_personality_nan MIPS: loongson64: set nid for reserved memblock region Revert "MIPS: loongson64: set nid for reserved memblock region" MIPS: lantiq: register smp_ops on non-smp platforms MIPS: loongson64: set nid for reserved memblock region MIPS: reserve exception vector space ONLY ONCE MIPS: BCM63XX: Fix missing prototypes MIPS: sgi-ip32: Fix missing prototypes MIPS: sgi-ip30: Fix missing prototypes MIPS: fw arc: Fix missing prototypes MIPS: sgi-ip27: Fix missing prototypes MIPS: Alchemy: Fix missing prototypes MIPS: Cobalt: Fix missing prototypes
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fix from Borislav Petkov: - Prevent an inconsistent futex operation leading to stale state exposure * tag 'locking_urgent_for_v6.8_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Prevent the reuse of stale pi_state
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fix from Borislav Petkov: - Initialize the resend node of each IRQ descriptor, not only the first one * tag 'irq_urgent_for_v6.8_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Initialize resend_node hlist for all interrupt descriptors
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Borislav Petkov: - Preserve the number of idle calls and sleep entries across CPU hotplug events in order to be able to compute correct averages - Limit the duration of the clocksource watchdog checking interval as too long intervals lead to wrongly marking the TSC as unstable * tag 'timers_urgent_for_v6.8_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tick/sched: Preserve number of idle sleeps across CPU hotplug events clocksource: Skip watchdog check for large watchdog intervals
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - Make sure 32-bit syscall registers are properly sign-extended - Add detection for AMD's Zen5 generation CPUs and Intel's Clearwater Forest CPU model number - Make a stub function export non-GPL because it is part of the paravirt alternatives and that can be used by non-GPL code * tag 'x86_urgent_for_v6.8_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/CPU/AMD: Add more models to X86_FEATURE_ZEN5 x86/entry/ia32: Ensure s32 is sign extended to s64 x86/cpu: Add model number for Intel Clearwater Forest processor x86/CPU/AMD: Add X86_FEATURE_ZEN5 x86/paravirt: Make BUG_func() usable by non-GPL modules
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git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblockLinus Torvalds authored
Pull memblock fix from Mike Rapoport: "Fix crash when reserved memory is not added to memory. When CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, the initialization of reserved pages may cause access of NODE_DATA() with invalid nid and crash. Add a fall back to early_pfn_to_nid() in memmap_init_reserved_pages() to ensure a valid node id is always passed to init_reserved_page()" * tag 'fixes-2024-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock: memblock: fix crash when reserved memory is not added to memory
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- 27 Jan, 2024 9 commits
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Linus Torvalds authored
Merge tag 'platform-drivers-x86-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fixes from Hans de Goede: - WMI bus driver fixes - Second attempt (previously reverted) at P2SB PCI rescan deadlock fix - AMD PMF driver improvements - MAINTAINERS updates - Misc other small fixes and hw-id additions * tag 'platform-drivers-x86-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86: touchscreen_dmi: Add info for the TECLAST X16 Plus tablet platform/x86/intel/ifs: Call release_firmware() when handling errors. platform/x86/amd/pmf: Fix memory leak in amd_pmf_get_pb_data() platform/x86/amd/pmf: Get ambient light information from AMD SFH driver platform/x86/amd/pmf: Get Human presence information from AMD SFH driver platform/mellanox: mlxbf-pmc: Fix offset calculation for crspace events platform/mellanox: mlxbf-tmfifo: Drop Tx network packet when Tx TmFIFO is full MAINTAINERS: remove defunct acpi4asus project info from asus notebooks section MAINTAINERS: add Luke Jones as maintainer for asus notebooks MAINTAINERS: Remove Perry Yuan as DELL WMI HARDWARE PRIVACY SUPPORT maintainer platform/x86: silicom-platform: Add missing "Description:" for power_cycle sysfs attr platform/x86: intel-wmi-sbl-fw-update: Fix function name in error message platform/x86: p2sb: Use pci_resource_n() in p2sb_read_bar0() platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe platform/x86: intel-uncore-freq: Fix types in sysfs callbacks platform/x86: wmi: Fix wmi_dev_probe() platform/x86: wmi: Fix notify callback locking platform/x86: wmi: Decouple legacy WMI notify handlers from wmi_block_list platform/x86: wmi: Return immediately if an suitable WMI event is found platform/x86: wmi: Fix error handling in legacy WMI notify handler functions
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Linus Torvalds authored
Merge tag 'loongarch-fixes-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch fixes from Huacai Chen: "Fix boot failure on machines with more than 8 nodes, and fix two build errors about KVM" * tag 'loongarch-fixes-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: LoongArch: KVM: Add returns to SIMD stubs LoongArch: KVM: Fix build due to API changes LoongArch/smp: Call rcutree_report_cpu_starting() at tlb_init()
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs fix from Chandan Babu: - Fix read only mounts when using fsopen mount API * tag 'xfs-6.8-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: read only mounts with fsopen mount API are busted
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https://evilpiepirate.org/git/bcachefsLinus Torvalds authored
Pull bcachefs fixes from Kent Overstreet: - fix for REQ_OP_FLUSH usage; this fixes filesystems going read only with -EOPNOTSUPP from the block layer. (this really should have gone in with the block layer patch causing the -EOPNOTSUPP, or should have gone in before). - fix an allocation in non-sleepable context - fix one source of srcu lock latency, on devices with terrible discard latency - fix a reattach_inode() issue in fsck * tag 'bcachefs-2024-01-26' of https://evilpiepirate.org/git/bcachefs: bcachefs: __lookup_dirent() works in snapshot, not subvol bcachefs: discard path uses unlock_long() bcachefs: fix incorrect usage of REQ_OP_FLUSH bcachefs: Add gfp flags param to bch2_prt_task_backtrace()
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git://git.samba.org/ksmbdLinus Torvalds authored
Pull smb server fixes from Steve French: - Fix netlink OOB - Minor kernel doc fix * tag '6.8-rc2-smb3-server-fixes' of git://git.samba.org/ksmbd: ksmbd: fix global oob in ksmbd_nl_policy smb: Fix some kernel-doc comments
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull smb client fixes from Steve French: "Nine cifs/smb client fixes - Four network error fixes (three relating to replays of requests that need to be retried, and one fixing some places where we were returning the wrong rc up the stack on network errors) - Two multichannel fixes including locking fix and case where subset of channels need reconnect - netfs integration fixup: share remote i_size with netfslib - Two small cleanups (one for addressing a clang warning)" * tag '6.8-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: fix stray unlock in cifs_chan_skip_or_disable cifs: set replay flag for retries of write command cifs: commands that are retried should have replay flag set cifs: helper function to check replayable error codes cifs: translate network errors on send to -ECONNABORTED cifs: cifs_pick_channel should try selecting active channels cifs: Share server EOF pos with netfslib smb: Work around Clang __bdos() type confusion smb: client: delete "true", "false" defines
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Xi Ruoyao authored
If we still own the FPU after initializing fcr31, when we are preempted the dirty value in the FPU will be read out and stored into fcr31, clobbering our setting. This can cause an improper floating-point environment after execve(). For example: zsh% cat measure.c #include <fenv.h> int main() { return fetestexcept(FE_INEXACT); } zsh% cc measure.c -o measure -lm zsh% echo $((1.0/3)) # raising FE_INEXACT 0.33333333333333331 zsh% while ./measure; do ; done (stopped in seconds) Call lose_fpu(0) before setting fcr31 to prevent this. Closes: https://lore.kernel.org/linux-mips/7a6aa1bbdbbe2e63ae96ff163fab0349f58f1b9e.camel@xry111.site/ Fixes: 9b26616c ("MIPS: Respect the ISA level in FCSR handling") Cc: stable@vger.kernel.org Signed-off-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Huang Pei authored
Commit 61167ad5("mm: pass nid to reserve_bootmem_region()") reveals that reserved memblock regions have no valid node id set, just set it right since loongson64 firmware makes it clear in memory layout info. This works around booting failure on 3A1000+ since commit 61167ad5 ("mm: pass nid to reserve_bootmem_region()") under CONFIG_DEFERRED_STRUCT_PAGE_INIT. Signed-off-by: Huang Pei <huangpei@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Thomas Bogendoerfer authored
This reverts commit ce7b1b97. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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