diff options
| author | Kees Cook <[email protected]> | 2023-04-07 19:27:16 +0000 |
|---|---|---|
| committer | Kees Cook <[email protected]> | 2024-02-29 21:38:02 +0000 |
| commit | 3d965b33e40d973b450cb0212913f039476c16f4 (patch) | |
| tree | 213bf660d55d66a2a4a273f8394156f30f83410c /arch/x86/boot/compressed/misc.c | |
| parent | fortify: Add KUnit tests for runtime overflows (diff) | |
| download | kernel-3d965b33e40d973b450cb0212913f039476c16f4.tar.gz kernel-3d965b33e40d973b450cb0212913f039476c16f4.zip | |
fortify: Improve buffer overflow reporting
Improve the reporting of buffer overflows under CONFIG_FORTIFY_SOURCE to
help accelerate debugging efforts. The calculations are all just sitting
in registers anyway, so pass them along to the function to be reported.
For example, before:
detected buffer overflow in memcpy
and after:
memcpy: detected buffer overflow: 4096 byte read of buffer size 1
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Kees Cook <[email protected]>
Diffstat (limited to 'arch/x86/boot/compressed/misc.c')
| -rw-r--r-- | arch/x86/boot/compressed/misc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index c9971b9dbb09..1844da203da9 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -496,7 +496,7 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output) return output + entry_offset; } -void __fortify_panic(const u8 reason) +void __fortify_panic(const u8 reason, size_t avail, size_t size) { error("detected buffer overflow"); } |