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ubsan: Fix incorrect hand-side used in handle
authorJunhui Pei <paradoxskin233@gmail.com>
Mon, 2 Jun 2025 15:38:41 +0000 (23:38 +0800)
committerKees Cook <kees@kernel.org>
Mon, 25 Aug 2025 13:11:06 +0000 (06:11 -0700)
commitae91aea2d2265c88dbed65a07bbaf3c133fe970c
tree38d587d7f01b2b9f8b31191620b47f560dedc9batree
parentc17b750b3ad9f45f2b6f7e6f7f4679844244f0b9commit | diff
ubsan: Fix incorrect hand-side used in handle

__ubsan_handle_divrem_overflow() incorrectly uses the RHS to report.
It always reports the same log: division of -1 by -1. But it should
report division of LHS by -1.

Signed-off-by: Junhui Pei <paradoxskin233@gmail.com>
Fixes: c6d308534aef ("UBSAN: run-time undefined behavior sanity checker")
Link: https://lore.kernel.org/r/20250602153841.62935-1-paradoxskin233@gmail.com
Signed-off-by: Kees Cook <kees@kernel.org>
lib/ubsan.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)