* Re: [syzbot] INFO: rcu detected stall in net_tx_action
[not found] <00000000000026864605c611cc51@google.com>
@ 2022-07-26 15:50 ` syzbot
2022-07-27 16:00 ` Ming Lei
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2022-07-26 15:50 UTC (permalink / raw)
To: axboe, cgroups, fweisbec, linux-block, linux-kernel, ming.lei,
mingo, netdev, syzkaller-bugs, tglx, tj
syzbot suspects this issue was fixed by commit:
commit 0a9a25ca78437b39e691bcc3dc8240455b803d8d
Author: Ming Lei <ming.lei@redhat.com>
Date: Fri Mar 18 13:01:43 2022 +0000
block: let blkcg_gq grab request queue's refcnt
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1004f05a080000
start commit: d6765985a42a Revert "be2net: disable bh with spin_lock in ..
git tree: net
kernel config: https://syzkaller.appspot.com/x/.config?x=7ca96a2d153c74b0
dashboard link: https://syzkaller.appspot.com/bug?extid=3ba0493d523d007b3819
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c9edc8300000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=172463c8300000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: block: let blkcg_gq grab request queue's refcnt
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [syzbot] INFO: rcu detected stall in net_tx_action
2022-07-26 15:50 ` [syzbot] INFO: rcu detected stall in net_tx_action syzbot
@ 2022-07-27 16:00 ` Ming Lei
0 siblings, 0 replies; 2+ messages in thread
From: Ming Lei @ 2022-07-27 16:00 UTC (permalink / raw)
To: syzbot
Cc: axboe, cgroups, fweisbec, linux-block, linux-kernel, mingo,
netdev, syzkaller-bugs, tglx, tj
On Tue, Jul 26, 2022 at 08:50:09AM -0700, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit 0a9a25ca78437b39e691bcc3dc8240455b803d8d
> Author: Ming Lei <ming.lei@redhat.com>
> Date: Fri Mar 18 13:01:43 2022 +0000
>
> block: let blkcg_gq grab request queue's refcnt
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1004f05a080000
> start commit: d6765985a42a Revert "be2net: disable bh with spin_lock in ..
> git tree: net
> kernel config: https://syzkaller.appspot.com/x/.config?x=7ca96a2d153c74b0
> dashboard link: https://syzkaller.appspot.com/bug?extid=3ba0493d523d007b3819
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c9edc8300000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=172463c8300000
>
The bad commit has been fixed by the following patch:
d578c770c852 block: avoid calling blkg_free() in atomic context
Thanks,
Ming
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-07-26 15:50 ` [syzbot] INFO: rcu detected stall in net_tx_action syzbot
2022-07-27 16:00 ` Ming Lei
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