From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+0260338e3eff65854d1f@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [xfs?] INFO: task hung in xfs_inodegc_flush
Date: Wed, 7 Feb 2024 19:44:59 +0800 [thread overview]
Message-ID: <20240207114459.1057-1-hdanton@sina.com> (raw)
In-Reply-To: <00000000000088268a0610c6b3ae@google.com>
On Wed, 07 Feb 2024 00:44:21 -0800
> HEAD commit: 076d56d74f17 Add linux-next specific files for 20240202
> git tree: linux-next
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13811004180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git 076d56d74f17
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1999,6 +1999,8 @@ static int try_to_grab_pending(struct wo
*/
pwq = get_work_pwq(work);
if (pwq && pwq->pool == pool) {
+ unsigned long work_data;
+
debug_work_deactivate(work);
/*
@@ -2016,11 +2018,12 @@ static int try_to_grab_pending(struct wo
list_del_init(&work->entry);
+ work_data = *work_data_bits(work);
/* work->data points to pwq iff queued, point to pool */
set_work_pool_and_keep_pending(work, pool->id);
/* must be the last step, see the function comment */
- pwq_dec_nr_in_flight(pwq, *work_data_bits(work));
+ pwq_dec_nr_in_flight(pwq, work_data);
raw_spin_unlock(&pool->lock);
rcu_read_unlock();
--
next prev parent reply other threads:[~2024-02-07 11:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-07 8:44 syzbot
2024-02-07 11:44 ` Hillf Danton [this message]
2024-02-07 11:55 ` syzbot
2024-02-07 20:54 ` Dave Chinner
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