From: Greg KH <gregkh@linuxfoundation.org>
To: Paulo Alcantara <pc@manguebit.com>
Cc: Rishabh Bhatnagar <risbhat@amazon.com>,
sfrench@amazon.com, stable@vger.kernel.org,
linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 5.4 0/2] Backport few dfs related fixes to cifs
Date: Mon, 12 Jun 2023 11:18:08 +0200 [thread overview]
Message-ID: <2023061203-skinning-guileless-0e13@gregkh> (raw)
In-Reply-To: <a664029640828958e152e9a4c11c4b9a.pc@manguebit.com>
On Thu, Jun 08, 2023 at 05:54:26PM -0300, Paulo Alcantara wrote:
> Rishabh Bhatnagar <risbhat@amazon.com> writes:
>
> > Recently we have been seeing kernel panic in cifs_reconnect function
> > while accessing tgt_list. Looks like tgt_list is not initialized
> > correctly. There are fixes already present in 5.10 and later trees.
> > Backporting them to 5.4
> >
> > CIFS VFS: \\172.30.1.14 cifs_reconnect: no target servers for DFS
> > failover
> > BUG: unable to handle page fault for address: fffffffffffffff8
> > #PF: supervisor read access in kernel mode
> > #PF: error_code(0x0000) - not-present page
> > PGD 260e067 P4D 260e067 PUD 2610067 PMD 0
> > Oops: 0000 [#1] SMP PTI
> > RIP: 0010:cifs_reconnect+0x51d/0xef0 [cifs]
> > RSP: 0018:ffffc90000693da0 EFLAGS: 00010282
> > RAX: fffffffffffffff8 RBX: ffff8887fa63b800 RCX: fffffffffffffff8
> > Call Trace:
> > cifs_handle_standard+0x18d/0x1b0 [cifs]
> > cifs_demultiplex_thread+0xa5c/0xc90 [cifs]
> > kthread+0x113/0x130
> >
> > Paulo Alcantara (2):
> > cifs: get rid of unused parameter in reconn_setup_dfs_targets()
> > cifs: handle empty list of targets in cifs_reconnect()
> >
> > fs/cifs/connect.c | 15 ++++++++-------
> > 1 file changed, 8 insertions(+), 7 deletions(-)
>
> Looks good.
Now queued up, thanks.
greg k-h
prev parent reply other threads:[~2023-06-12 9:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-07 20:33 [PATCH v2 5.4 0/2] Backport few dfs related fixes to cifs Rishabh Bhatnagar
2023-06-07 20:33 ` [PATCH v2 5.4 1/2] cifs: get rid of unused parameter in reconn_setup_dfs_targets() Rishabh Bhatnagar
2023-06-07 20:33 ` [PATCH v2 5.4 2/2] cifs: handle empty list of targets in cifs_reconnect() Rishabh Bhatnagar
2023-06-08 20:54 ` [PATCH v2 5.4 0/2] Backport few dfs related fixes to cifs Paulo Alcantara
2023-06-12 9:18 ` Greg KH [this message]
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