Messages in this thread | | | From | Catalin Marinas <> | Subject | Re: [PATCH v2] arm64: atomics: lse: Dereference matching size | Date | Thu, 20 Jan 2022 15:56:21 +0000 |
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On Wed, 12 Jan 2022 12:22:59 -0800, Kees Cook wrote: > When building with -Warray-bounds, the following warning is generated: > > In file included from ./arch/arm64/include/asm/lse.h:16, > from ./arch/arm64/include/asm/cmpxchg.h:14, > from ./arch/arm64/include/asm/atomic.h:16, > from ./include/linux/atomic.h:7, > from ./include/asm-generic/bitops/atomic.h:5, > from ./arch/arm64/include/asm/bitops.h:25, > from ./include/linux/bitops.h:33, > from ./include/linux/kernel.h:22, > from kernel/printk/printk.c:22: > ./arch/arm64/include/asm/atomic_lse.h:247:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'atomic_t[1]' [-Warray-bounds] > 247 | asm volatile( \ > | ^~~ > ./arch/arm64/include/asm/atomic_lse.h:266:1: note: in expansion of macro '__CMPXCHG_CASE' > 266 | __CMPXCHG_CASE(w, , acq_, 32, a, "memory") > | ^~~~~~~~~~~~~~ > kernel/printk/printk.c:3606:17: note: while referencing 'printk_cpulock_owner' > 3606 | static atomic_t printk_cpulock_owner = ATOMIC_INIT(-1); > | ^~~~~~~~~~~~~~~~~~~~ > > [...]
Applied to arm64 (for-next/core), thanks!
[1/1] arm64: atomics: lse: Dereference matching size https://git.kernel.org/arm64/c/3364c6ce23c6
-- Catalin
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