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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-21 19:32:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-21 19:32:04 -0700 |
| commit | 2142b7f0c6bbe1f9515ce3383de9f7a32a5a025b (patch) | |
| tree | e1c28d1fc2cf8a905254b6f4475a4e65dfddce82 /arch/xtensa/kernel/irq.c | |
| parent | fd2d7a4a354539dc141f702c6c277bf3380e8778 (diff) | |
| parent | afcf5441b9ff22ac57244cd45ff102ebc2e32d1a (diff) | |
| download | linux-2142b7f0c6bbe1f9515ce3383de9f7a32a5a025b.tar.bz2 | |
Merge tag 'hardening-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull kernel hardening updates from Kees Cook:
- Add arm64 Shadow Call Stack support for GCC 12 (Dan Li)
- Avoid memset with stack offset randomization under Clang (Marco
Elver)
- Clean up stackleak plugin to play nice with .noinstr (Kees Cook)
- Check stack depth for greater usercopy hardening coverage (Kees Cook)
* tag 'hardening-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
arm64: Add gcc Shadow Call Stack support
m68k: Implement "current_stack_pointer"
xtensa: Implement "current_stack_pointer"
usercopy: Check valid lifetime via stack depth
stack: Constrain and fix stack offset randomization with Clang builds
stack: Introduce CONFIG_RANDOMIZE_KSTACK_OFFSET
gcc-plugins/stackleak: Ignore .noinstr.text and .entry.text
gcc-plugins/stackleak: Exactly match strings instead of prefixes
gcc-plugins/stackleak: Provide verbose mode
Diffstat (limited to 'arch/xtensa/kernel/irq.c')
| -rw-r--r-- | arch/xtensa/kernel/irq.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index 15051a8a1539..529fe9245821 100644 --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -36,9 +36,8 @@ asmlinkage void do_IRQ(int hwirq, struct pt_regs *regs) #ifdef CONFIG_DEBUG_STACKOVERFLOW /* Debugging check for stack overflow: is there less than 1KB free? */ { - unsigned long sp; + unsigned long sp = current_stack_pointer; - __asm__ __volatile__ ("mov %0, a1\n" : "=a" (sp)); sp &= THREAD_SIZE - 1; if (unlikely(sp < (sizeof(thread_info) + 1024))) |