From: David Howells <dhowells@redhat.com>
To: Antony Antony <antony@phenome.org>
Cc: dhowells@redhat.com, Sedat Dilek <sedat.dilek@gmail.com>,
Maximilian Bosch <maximilian@mbosch.me>,
Linux regressions mailing list <regressions@lists.linux.dev>,
LKML <linux-kernel@vger.kernel.org>,
linux-fsdevel@vger.kernel.org,
Christian Brauner <brauner@kernel.org>
Subject: Re: [REGRESSION] 9pfs issues on 6.12-rc1
Date: Mon, 21 Oct 2024 15:45:50 +0100 [thread overview]
Message-ID: <2171405.1729521950@warthog.procyon.org.uk> (raw)
In-Reply-To: <ZxFQw4OI9rrc7UYc@Antony2201.local>
Can you tell me what parameters you're mounting 9p with? Looking at the
backtrace:
[ 32.390878] bad_page+0x70/0x110
[ 32.391056] free_unref_page+0x363/0x4f0
[ 32.391257] p9_release_pages+0x41/0x90 [9pnet]
[ 32.391627] p9_virtio_zc_request+0x3d4/0x720 [9pnet_virtio]
[ 32.391896] ? p9pdu_finalize+0x32/0xa0 [9pnet]
[ 32.392153] p9_client_zc_rpc.constprop.0+0x102/0x310 [9pnet]
[ 32.392447] ? kmem_cache_free+0x36/0x370
[ 32.392703] p9_client_read_once+0x1a6/0x310 [9pnet]
[ 32.392992] p9_client_read+0x56/0x80 [9pnet]
[ 32.393238] v9fs_issue_read+0x50/0xd0 [9p]
[ 32.393467] netfs_read_to_pagecache+0x20c/0x480 [netfs]
[ 32.393832] netfs_readahead+0x225/0x330 [netfs]
[ 32.394154] read_pages+0x6a/0x250
it's using buffered I/O, but when I try and use 9p from qemu, it wants to use
unbuffered/direct I/O.
David
next prev parent reply other threads:[~2024-10-21 14:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-02 17:08 [REGRESSION] 9pfs issues on 6.12-rc1 Maximilian Bosch
2024-10-02 17:31 ` Linux regression tracking (Thorsten Leemhuis)
2024-10-02 21:48 ` Maximilian Bosch
2024-10-03 1:12 ` Sedat Dilek
2024-10-17 18:00 ` Antony Antony
2024-10-21 13:23 ` Christian Brauner
2024-10-21 14:12 ` David Howells
2024-10-21 15:33 ` Antony Antony
2024-10-21 14:45 ` David Howells [this message]
2024-10-21 15:53 ` Antony Antony
2024-10-21 19:48 ` David Howells
2025-08-10 5:10 ` Arnout Engelen
2024-10-21 20:38 ` [PATCH] 9p: Don't revert the I/O iterator after reading David Howells
2024-10-21 23:53 ` Antony Antony
2024-10-22 8:56 ` Christian Brauner
2024-10-23 10:07 ` [REGRESSION] 9pfs issues on 6.12-rc1 David Howells
2024-10-23 19:38 ` Antony Antony
2025-06-12 22:24 ` Ryan Lahfa
2025-06-27 5:44 ` Christian Theune
2025-06-27 6:44 ` Dominique Martinet
2025-06-27 8:19 ` Christian Theune
2025-06-27 10:00 ` David Howells
2025-06-27 10:33 ` Ryan Lahfa
2025-08-10 17:57 ` Arnout Engelen
2025-08-11 0:57 ` asmadeus
2025-08-11 7:43 ` Dominique Martinet
2025-08-11 12:43 ` Arnout Engelen
2024-10-23 18:35 ` Maximilian Bosch
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