From: Martin KaFai Lau <martin.lau@linux.dev>
To: syzbot <syzbot+222aa26d0a5dbc2e84fe@syzkaller.appspotmail.com>,
syzkaller-bugs@googlegroups.com
Cc: amir73il@gmail.com, bpf@vger.kernel.org, daniel@iogearbox.net,
davem@davemloft.net, edumazet@google.com, hdanton@sina.com,
jack@suse.cz, kuba@kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
pabeni@redhat.com, penguin-kernel@i-love.sakura.ne.jp,
peterz@infradead.org, torvalds@linux-foundation.org,
willemdebruijn.kernel@gmail.com
Subject: Re: [syzbot] [fs?] INFO: task hung in synchronize_rcu (4)
Date: Sat, 20 May 2023 19:26:22 -0700 [thread overview]
Message-ID: <048219d7-2403-b898-129f-a0f85512cdf5@linux.dev> (raw)
In-Reply-To: <000000000000baea9905fc275a49@google.com>
On 5/20/23 3:13 PM, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: dcbe4ea1985d Merge branch '1GbE' of git://git.kernel.org/p..
> git tree: net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=123ebd91280000
> kernel config: https://syzkaller.appspot.com/x/.config?x=f20b05fe035db814
> dashboard link: https://syzkaller.appspot.com/bug?extid=222aa26d0a5dbc2e84fe
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1495596a280000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1529326a280000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/41b9dda0e686/disk-dcbe4ea1.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/64d9bece8f89/vmlinux-dcbe4ea1.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/42429896dca0/bzImage-dcbe4ea1.xz
>
> The issue was bisected to:
>
> commit 3b5d4ddf8fe1f60082513f94bae586ac80188a03
> Author: Martin KaFai Lau <kafai@fb.com>
> Date: Wed Mar 9 09:04:50 2022 +0000
>
> bpf: net: Remove TC_AT_INGRESS_OFFSET and SKB_MONO_DELIVERY_TIME_OFFSET macro
I am afraid this bisect is incorrect. The commit removed a redundant macro and
is a no-op change.
next prev parent reply other threads:[~2023-05-21 2:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-04 2:01 [syzbot] [fs?] INFO: task hung in synchronize_rcu (4) syzbot
2023-05-20 22:13 ` syzbot
2023-05-21 2:26 ` Martin KaFai Lau [this message]
2023-05-21 5:04 ` Tetsuo Handa
[not found] <20230504061613.3901-1-hdanton@sina.com>
2023-05-04 7:01 ` Tetsuo Handa
2023-05-05 8:35 ` Peter Zijlstra
2023-05-05 9:46 ` Tetsuo Handa
2023-05-05 9:49 ` Tetsuo Handa
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