Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'core-urgent-2021-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 stack randomization fix from Ingo Molnar:
"Fix an assembly constraint that affected LLVM up to version 12"
* tag 'core-urgent-2021-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
stack: Replace "o" output with "r" input constraint
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include/linux/randomize_kstack.h
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include/linux/randomize_kstack.h
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u32 offset = raw_cpu_read(kstack_offset); \
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u8 *ptr = __builtin_alloca(KSTACK_OFFSET_MAX(offset)); \
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/* Keep allocation even after "ptr" loses scope. */ \
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asm volatile("" : "=o"(*ptr) :: "memory"); \
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asm volatile("" :: "r"(ptr) : "memory"); \
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} \
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} while (0)
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