From: Luis Chamberlain <mcgrof@kernel.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Andrew Morton <akpm@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Naresh Kamboju <naresh.kamboju@linaro.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Christoph Hellwig <hch@infradead.org>,
mcgrof@kernel.org
Cc: syzbot <syzbot+46c77dc7e98c732de754@syzkaller.appspotmail.com>,
dhowells@redhat.com, jarkko.sakkinen@linux.intel.com,
jmorris@namei.org, keyrings@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org, serge@hallyn.com,
syzkaller-bugs@googlegroups.com
Subject: Re: INFO: task hung in request_key_tag
Date: Wed, 1 Jul 2020 12:20:30 +0000 [thread overview]
Message-ID: <20200701122030.GP4332@42.do-not-panic.com> (raw)
In-Reply-To: <728915db-592b-997f-6970-464cc59441d7@i-love.sakura.ne.jp>
On Wed, Jul 01, 2020 at 07:04:15PM +0900, Tetsuo Handa wrote:
> I suspect commit 9e9b47d6bbe9df65 ("umh: fix processed error when UMH_WAIT_PROC is used").
> Maybe the change in kernel/umh.c and/or security/keys/request_key.c made by that commit is
> affecting call_usermodehelper_keys() == 0 case when complete_request_key() is called.
That patch has been dropped for now due to another reported issue
bisected to it and even though we have not root caused that issue [0].
It would be good to have a reproducer for this reported issue as well,
but I should also point out a regression which Naresh reported is fixed
recently by a posted patch [1] by Herbert Xu. It would be good if you
can test with that patch posted by Herbert.
[0] https://lkml.kernel.org/r/20200623141157.5409-1-borntraeger@de.ibm.com
[1] https://lkml.kernel.org/r/20200626062948.GA25285@gondor.apana.org.au
Luis
>
> On 2020/07/01 16:53, syzbot wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit: c28e58ee Add linux-next specific files for 20200629
> > git tree: linux-next
> > console output: https://syzkaller.appspot.com/x/log.txt?x=17925a9d100000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=dcd26bbca17dd1db
> > dashboard link: https://syzkaller.appspot.com/bug?extid=46c77dc7e98c732de754
> > compiler: gcc (GCC) 10.1.0-syz 20200507
> >
> > Unfortunately, I don't have any reproducer for this crash yet.
> >
> > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > Reported-by: syzbot+46c77dc7e98c732de754@syzkaller.appspotmail.com
next prev parent reply other threads:[~2020-07-01 12:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 7:53 INFO: task hung in request_key_tag syzbot
2020-07-01 10:04 ` Tetsuo Handa
2020-07-01 12:20 ` Luis Chamberlain [this message]
2020-07-01 12:49 ` Tetsuo Handa
2020-07-03 11:40 ` syzbot
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