Re: [syzbot] [mm] KMSAN: uninit-value in sw842_compress

From: syzbot

Date: Wed Oct 22 2025 - 00:48:03 EST


Hello,

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

Reported-by: syzbot+17cae3c0a5b0acdc327d@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+17cae3c0a5b0acdc327d@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit: d1d7f15c DO-NOT-SUBMIT: kmsan: add the kmsan_exceed_ma..
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=10eb63e2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=87f87e008168c835
dashboard link: https://syzkaller.appspot.com/bug?extid=17cae3c0a5b0acdc327d
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=124803e2580000

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