linux-kernel - Re: 6.12 WARNING in netfs_consume_read

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Message-ID: <1995560.1733519609@warthog.procyon.org.uk>
Date: Fri, 06 Dec 2024 21:13:29 +0000
From: David Howells <dhowells@...hat.com>
To: Max Kellermann <max.kellermann@...os.com>
Cc: dhowells@...hat.com, Jeff Layton <jlayton@...nel.org>,
    netfs@...ts.linux.dev, linux-fsdevel <linux-fsdevel@...r.kernel.org>,
    linux-kernel@...r.kernel.org
Subject: Re: 6.12 WARNING in netfs_consume_read_data()

Max Kellermann <max.kellermann@...os.com> wrote:

> 
> I tried with 6.12.3 + dhowells/netfs-writeback; David's branch solved
> many problems and it took much longer to trigger the hang, but it
> eventually occurred:

Can you get some tracing for me?

echo 1 >/sys/kernel/debug/tracing/events/netfs/netfs_failure/enable
echo 1 >/sys/kernel/debug/tracing/events/netfs/netfs_rreq/enable
echo 1 >/sys/kernel/debug/tracing/events/netfs/netfs_sreq/enable
echo 1 >/sys/kernel/debug/tracing/events/netfs/netfs_folio/enable
echo 1 >/sys/kernel/debug/tracing/events/cachefiles/cachefiles_read/enable
echo 1 >/sys/kernel/debug/tracing/events/cachefiles/cachefiles_write/enable

(And compress the result before posting)

Thanks,
David