From: Khalid Masum <khalid.masum.92@gmail.com>
To: Hawkins Jiawei <yin31149@gmail.com>, dan.carpenter@oracle.com
Cc: davem@davemloft.net, dhowells@redhat.com, edumazet@google.com,
kuba@kernel.org, linux-afs@lists.infradead.org,
linux-kernel-mentees@lists.linuxfoundation.org,
linux-kernel@vger.kernel.org, marc.dionne@auristor.com,
netdev@vger.kernel.org, pabeni@redhat.com, paskripkin@gmail.com,
syzbot+7f0483225d0c94cb3441@syzkaller.appspotmail.com,
syzkaller-bugs@googlegroups.com, yin31149@gmail.com
Subject: Re: [PATCH] rxrpc: fix bad unlock balance in rxrpc_do_sendmsg
Date: Mon, 22 Aug 2022 22:00:37 +0600 [thread overview]
Message-ID: <0ED076C1-6250-43EA-A7BE-948DFAEE851A@gmail.com> (raw)
In-Reply-To: <20220822153944.6204-1-yin31149@gmail.com>
On August 22, 2022 9:39:43 PM GMT+06:00, Hawkins Jiawei <yin31149@gmail.com> wrote:
>On Mon, 22 Aug 2022 at 22:06, Dan Carpenter <dan.carpenter@oracle.com> wrote:
>I trid this before, it doesn't work as Dan points out. I think
>it seems that mutex_is_locked() only checks whether there is a task
I see.
>holding the mutex, but do not check whether it is current task holding
>mutex. I also tried lockdep_is_held(), lockdep_is_held() seems can detect
Ok.
>call->user_mutex is still held accurately, although this cannot be the patch.
Useful to know! Thanks for the information.
-- Khalid Masum
WARNING: multiple messages have this Message-ID (diff)
From: Khalid Masum <khalid.masum.92@gmail.com>
To: Hawkins Jiawei <yin31149@gmail.com>, dan.carpenter@oracle.com
Cc: netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com,
linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org,
dhowells@redhat.com,
syzbot+7f0483225d0c94cb3441@syzkaller.appspotmail.com,
edumazet@google.com, yin31149@gmail.com, paskripkin@gmail.com,
marc.dionne@auristor.com, kuba@kernel.org, pabeni@redhat.com,
linux-kernel-mentees@lists.linuxfoundation.org,
davem@davemloft.net
Subject: Re: [PATCH] rxrpc: fix bad unlock balance in rxrpc_do_sendmsg
Date: Mon, 22 Aug 2022 22:00:37 +0600 [thread overview]
Message-ID: <0ED076C1-6250-43EA-A7BE-948DFAEE851A@gmail.com> (raw)
In-Reply-To: <20220822153944.6204-1-yin31149@gmail.com>
On August 22, 2022 9:39:43 PM GMT+06:00, Hawkins Jiawei <yin31149@gmail.com> wrote:
>On Mon, 22 Aug 2022 at 22:06, Dan Carpenter <dan.carpenter@oracle.com> wrote:
>I trid this before, it doesn't work as Dan points out. I think
>it seems that mutex_is_locked() only checks whether there is a task
I see.
>holding the mutex, but do not check whether it is current task holding
>mutex. I also tried lockdep_is_held(), lockdep_is_held() seems can detect
Ok.
>call->user_mutex is still held accurately, although this cannot be the patch.
Useful to know! Thanks for the information.
-- Khalid Masum
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Linux-kernel-mentees mailing list
Linux-kernel-mentees@lists.linuxfoundation.org
https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees
next prev parent reply other threads:[~2022-08-22 16:01 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 10:37 [syzbot] WARNING: bad unlock balance in rxrpc_do_sendmsg syzbot
2022-08-21 12:57 ` [PATCH] rxrpc: fix " Hawkins Jiawei
2022-08-21 12:57 ` Hawkins Jiawei
2022-08-21 15:58 ` Khalid Masum
2022-08-21 15:58 ` Khalid Masum
2022-08-21 16:42 ` Khalid Masum
2022-08-21 16:42 ` Khalid Masum
2022-08-22 5:19 ` Hawkins Jiawei
2022-08-22 5:19 ` Hawkins Jiawei
2022-08-21 19:17 ` [syzbot] WARNING: " Khalid Masum
2022-08-21 19:17 ` Khalid Masum
2022-08-21 22:29 ` syzbot
2022-08-21 22:29 ` syzbot
2022-08-22 8:48 ` [PATCH] rxrpc: fix " David Howells
2022-08-22 8:48 ` David Howells
2022-08-22 9:21 ` David Howells
2022-08-22 9:21 ` David Howells
2022-08-22 11:29 ` Hawkins Jiawei
2022-08-22 11:29 ` Hawkins Jiawei
2022-08-22 11:29 ` Hawkins Jiawei
2022-08-22 11:29 ` Hawkins Jiawei
2022-08-22 13:04 ` Hawkins Jiawei
2022-08-22 13:04 ` Hawkins Jiawei
2022-08-22 13:44 ` Dan Carpenter
2022-08-22 13:44 ` Dan Carpenter
2022-08-22 13:55 ` Khalid Masum
2022-08-22 13:55 ` Khalid Masum
2022-08-22 14:05 ` Dan Carpenter
2022-08-22 14:05 ` Dan Carpenter
2022-08-22 15:39 ` Hawkins Jiawei
2022-08-22 15:39 ` Hawkins Jiawei
2022-08-22 16:00 ` Khalid Masum [this message]
2022-08-22 16:00 ` Khalid Masum
2022-08-22 14:24 ` [syzbot] WARNING: " David Howells
2022-08-22 15:45 ` David Howells
2022-08-22 16:23 ` syzbot
2022-08-24 16:30 ` Marc Dionne
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