mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-11-06 18:57:23 +00:00
7501153750
In cyapa_update_fw_store(), if 'count' is zero, the write to fw_name[count-1] underflows the array. Presumably that's not possible in normal operation, as its caller sysfs_kf_write() already checks for zero. Regardless it's a good idea to check for the error explicitly and avoid undefined behavior. Fixes the following warning with an UBSAN kernel: vmlinux.o: warning: objtool: .text.cyapa_update_fw_store: unexpected end of section Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/73ae0bb3c656735890d914b74c9d6bb40c25d3cd.1742852847.git.jpoimboe@kernel.org Closes: https://lore.kernel.org/oe-kbuild-all/202503171547.LlCTJLQL-lkp@intel.com/ |
History
|
|
|---|---|---|
| .. | ||
| gameport | ||
| joystick | ||
| keyboard | ||
| misc | ||
| mouse | ||
| rmi4 | ||
| serio | ||
| tablet | ||
| tests | ||
| touchscreen | ||
| apm-power.c | ||
| evdev.c | ||
| ff-core.c | ||
| ff-memless.c | ||
| input-compat.c | ||
| input-compat.h | ||
| input-core-private.h | ||
| input-leds.c | ||
| input-mt.c | ||
| input-poller.c | ||
| input-poller.h | ||
| input.c | ||
| joydev.c | ||
| Kconfig | ||
| Makefile | ||
| matrix-keymap.c | ||
| mousedev.c | ||
| sparse-keymap.c | ||
| touchscreen.c | ||
| vivaldi-fmap.c | ||