From: syzbot <syzbot+29d3a3b4d86c8136ad9e@syzkaller.appspotmail.com>
To: Jason@zx2c4.com, frederic@kernel.org,
linux-kernel@vger.kernel.org, mark.rutland@arm.com,
peterz@infradead.org, sathyanarayanan.kuppuswamy@linux.intel.com,
steven.price@arm.com, syzkaller-bugs@googlegroups.com,
tglx@linutronix.de, tony.luck@intel.com, vschneid@redhat.com
Subject: Re: [syzbot] WARNING in cpuset_attach
Date: Wed, 24 Aug 2022 13:32:40 -0700 [thread overview]
Message-ID: <0000000000000bc13705e702955b@google.com> (raw)
In-Reply-To: <0000000000009ebf5605e6ff48d5@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: c40e8341e3b3 Merge tag 'cgroup-for-6.0-rc2-fixes' of git:/..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=169937b5080000
kernel config: https://syzkaller.appspot.com/x/.config?x=911efaff115942bb
dashboard link: https://syzkaller.appspot.com/bug?extid=29d3a3b4d86c8136ad9e
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=10823695080000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16dab02b080000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+29d3a3b4d86c8136ad9e@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3614 at kernel/cpu.c:347 lockdep_assert_cpus_held kernel/cpu.c:347 [inline]
WARNING: CPU: 0 PID: 3614 at kernel/cpu.c:347 lockdep_assert_cpus_held+0xbd/0xe0 kernel/cpu.c:336
Modules linked in:
CPU: 1 PID: 3614 Comm: vhost-3613 Not tainted 6.0.0-rc2-syzkaller-00054-gc40e8341e3b3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:lockdep_assert_cpus_held kernel/cpu.c:347 [inline]
RIP: 0010:lockdep_assert_cpus_held+0xbd/0xe0 kernel/cpu.c:336
Code: e8 38 0c 34 00 be ff ff ff ff 48 c7 c7 70 64 e3 8b e8 37 71 37 08 31 ff 89 c3 89 c6 e8 dc 08 34 00 85 db 75 d5 e8 13 0c 34 00 <0f> 0b eb cc 48 c7 c7 44 66 de 8d e8 d3 73 80 00 e9 62 ff ff ff 48
RSP: 0018:ffffc9000377fbe8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888025c19d80 RSI: ffffffff8147ff0d RDI: 0000000000000005
RBP: ffff888075905000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9000377fda0
R13: ffffffff8bfdc2a0 R14: 1ffff920006eff84 R15: ffffc9000377fdc4
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000150 CR3: 0000000025a0b000 CR4: 0000000000350ef0
Call Trace:
<TASK>
cpuset_attach+0x92/0x520 kernel/cgroup/cpuset.c:2292
cgroup_migrate_execute+0xbc7/0x1220 kernel/cgroup/cgroup.c:2584
cgroup_attach_task+0x416/0x7c0 kernel/cgroup/cgroup.c:2875
cgroup_attach_task_all+0xde/0x140 kernel/cgroup/cgroup-v1.c:70
vhost_attach_cgroups_work+0x3a/0x90 drivers/vhost/vhost.c:523
vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:364
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
next prev parent reply other threads:[~2022-08-24 20:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-24 16:36 [syzbot] WARNING in cpuset_attach syzbot
2022-08-24 20:32 ` syzbot [this message]
2022-08-25 8:38 ` [PATCH] cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all() Tetsuo Handa
2022-08-25 17:44 ` Tejun Heo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=0000000000000bc13705e702955b@google.com \
--to=syzbot+29d3a3b4d86c8136ad9e@syzkaller.appspotmail.com \
--cc=Jason@zx2c4.com \
--cc=frederic@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=peterz@infradead.org \
--cc=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=steven.price@arm.com \
--cc=syzkaller-bugs@googlegroups.com \
--cc=tglx@linutronix.de \
--cc=tony.luck@intel.com \
--cc=vschneid@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.