linux-kernel - Re: [syzbot] [io-uring?] INFO: task hung in io_wq_put_and

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Message-ID: <7aa47c41-df51-4a9a-b021-866ea1bacb7b@kernel.dk>
Date: Tue, 20 Jan 2026 08:04:11 -0700
From: Jens Axboe <axboe@...nel.dk>
To: syzbot <syzbot+4eb282331cab6d5b6588@...kaller.appspotmail.com>,
 anna-maria@...utronix.de, frederic@...nel.org, io-uring@...r.kernel.org,
 linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
 tglx@...utronix.de
Subject: Re: [syzbot] [io-uring?] INFO: task hung in io_wq_put_and_exit (6)

Just to wrap this one up - there's a fairly lengthy explanation posted
here:

https://lore.kernel.org/io-uring/937c3e38-368e-43eb-9d7e-2dcc0697799f@kernel.dk/

which details why this isn't really a bug, it's just slow exit due to
the odd huge reads (and number of them) syzbot queues up with io_uring
before exiting.

-- 
Jens Axboe