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| author |   Peter Zijlstra <peterz@infradead.org> | 2025-11-26 10:55:17 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-11-27 09:32:47 +0100 |
| commit | d62e4f2b9542d25d183f068033558e87e81a00a8 (patch) | |
| tree | 5c44911816cba32ed0a96bc0282f1ca650c75b87 /drivers/thermal/testing/git:/ssh:/git@git.zx2c4.com | |
| parent | x86_64/bug: Inline the UD1 (diff) | |
x86/bug: Fix BUG_FORMAT vs KASLR
Encoding a relative NULL pointer doesn't work for KASLR, when the
whole kernel image gets shifted, the __bug_table and the target string
get shifted by the same amount and the relative offset is preserved.
However when the target is an absolute 0 value and the __bug_table
gets moved about, the end result in a pointer equivalent to
kaslr_offset(), not NULL.
Notably, this will generate SHN_UNDEF relocations, and Ard would
really like to not have those at all.
Use the empty string to denote no-string.
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'drivers/thermal/testing/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions