From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org,
linux-rt-users <linux-rt-users@vger.kernel.org>
Subject: Re: [PATCH] blktrace: fix 'BUG: sleeping function called from invalid context' in case of PREEMPT_RT
Date: Tue, 15 Dec 2020 17:07:47 +0100 [thread overview]
Message-ID: <20201215160747.zzi3jxfy6kv25c2n@linutronix.de> (raw)
In-Reply-To: <20201215120604.GB1798021@T590>
On 2020-12-15 20:06:04 [+0800], Ming Lei wrote:
>
> [ 284.527619] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:968
> [ 284.527626] in_atomic(): 1, irqs_disabled(): 0, pid: 6705, name: mandb
> [ 284.527631] 4 locks held by mandb/6705:
> [ 284.527634] #0: ffff88853f4f2eb0 (&f->f_pos_lock){+.+.}-{0:0}, at: __fdget_pos+0xaf/0xe0
> [ 284.527662] #1: ffff8885eb814048 (&sb->s_type->i_mutex_key#13){++++}-{0:0}, at: xfs_ilock+0x17d/0x590 [xfs]
> [ 284.527838] #2: ffffffffa24d22c0 (rcu_read_lock){....}-{1:2}, at: blk_add_trace_bio+0x0/0x2f0
> [ 284.527859] #3: ffffffffa22177a0 (running_trace_lock){+.+.}-{2:2}, at: __blk_add_trace+0x9ea/0xdf0
> [ 284.527877] Preemption disabled at:
> [ 284.527886] [<ffffffff9f936743>] get_lock_stats+0x13/0x120
> [ 284.527897] CPU: 53 PID: 6705 Comm: mandb Kdump: loaded Not tainted 4.18.0-259.rt7.24.el8.x86_64+debug #1
4.18?
I just gave it a try with 5.10-RT and I don't see a splat. Please retest
with v5.10-RT.
>
> Thanks,
> Ming
Sebastian
prev parent reply other threads:[~2020-12-15 16:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-14 2:22 Ming Lei
2020-12-14 15:24 ` Steven Rostedt
2020-12-15 12:06 ` Ming Lei
2020-12-15 16:07 ` Sebastian Andrzej Siewior [this message]
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