Re: [syzbot] [raid?] UBSAN: shift-out-of-bounds in raid5_set_limits

From: syzbot

Date: Sun Aug 09 2026 - 01:35:09 EST


Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+de94ddbfff0c9e6fe030@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+de94ddbfff0c9e6fe030@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit: ba5cc80f Merge branch 'for-next/core' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=161e8149580000
kernel config: https://syzkaller.appspot.com/x/.config?x=ccf4bea59f67007
dashboard link: https://syzkaller.appspot.com/bug?extid=de94ddbfff0c9e6fe030
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
userspace arch: arm64
patch: https://syzkaller.appspot.com/x/patch.diff?x=140fbfb9580000

Note: testing is done by a robot and is best-effort only.