netdev - Re: [syzbot] [smc?] general protection fault in __smc_diag

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Message-ID: <68cd4949.050a0220.ba58e.045c.GAE@google.com>
Date: Fri, 19 Sep 2025 05:15:05 -0700
From: syzbot <syzbot+f775be4458668f7d220e@...kaller.appspotmail.com>
To: aha310510@...il.com, alibuda@...ux.alibaba.com, davem@...emloft.net, 
	dust.li@...ux.alibaba.com, edumazet@...gle.com, guwen@...ux.alibaba.com, 
	horms@...nel.org, jaka@...ux.ibm.com, kuba@...nel.org, 
	linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org, 
	linux-s390@...r.kernel.org, mjambigi@...ux.ibm.com, netdev@...r.kernel.org, 
	pabeni@...hat.com, sidraya@...ux.ibm.com, syzkaller-bugs@...glegroups.com, 
	tonylu@...ux.alibaba.com, wenjia@...ux.ibm.com
Subject: Re: [syzbot] [smc?] general protection fault in __smc_diag_dump (4)

syzbot has bisected this issue to:

commit 98d4435efcbf37801a3246fb53856c4b934a2613
Author: Jeongjun Park <aha310510@...il.com>
Date:   Thu Aug 29 03:56:48 2024 +0000

    net/smc: prevent NULL pointer dereference in txopt_get

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=131dc712580000
start commit:   5aca7966d2a7 Merge tag 'perf-tools-fixes-for-v6.17-2025-09..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=109dc712580000
console output: https://syzkaller.appspot.com/x/log.txt?x=171dc712580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8f01d8629880e620
dashboard link: https://syzkaller.appspot.com/bug?extid=f775be4458668f7d220e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17aec534580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=115a9f62580000

Reported-by: syzbot+f775be4458668f7d220e@...kaller.appspotmail.com
Fixes: 98d4435efcbf ("net/smc: prevent NULL pointer dereference in txopt_get")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection