linux-kernel - Re: [syzbot] [bpf?] KMSAN: uninit-value in bpf_prog_test_run

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Message-ID: <6967b0da.050a0220.150504.0003.GAE@google.com>
Date: Wed, 14 Jan 2026 07:06:02 -0800
From: syzbot <syzbot+619b9ef527f510a57cfc@...kaller.appspotmail.com>
To: andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org, 
	daniel@...earbox.net, eddyz87@...il.com, haoluo@...gle.com, 
	john.fastabend@...il.com, jolsa@...nel.org, kpsingh@...nel.org, 
	linux-kernel-mentees@...ts.linuxfoundation.org, linux-kernel@...r.kernel.org, 
	martin.lau@...ux.dev, sdf@...ichev.me, shuah@...nel.org, 
	sohammetha01@...il.com, song@...nel.org, syzkaller-bugs@...glegroups.com, 
	yonghong.song@...ux.dev
Subject: Re: [syzbot] [bpf?] KMSAN: uninit-value in bpf_prog_test_run_skb

Hello,

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

Reported-by: syzbot+619b9ef527f510a57cfc@...kaller.appspotmail.com
Tested-by: syzbot+619b9ef527f510a57cfc@...kaller.appspotmail.com

Tested on:

commit:         c537e12d Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12188522580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=46b5f80a6e7aaa5c
dashboard link: https://syzkaller.appspot.com/bug?extid=619b9ef527f510a57cfc
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=15f21d9a580000

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