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From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: syzbot+7a1cff37dbbef9e7ba4c@syzkaller.appspotmail.com,
	syzkaller-bugs@googlegroups.com
Cc: viro@ZenIV.linux.org.uk, akpm@linux-foundation.org,
	dhowells@redhat.com, ebiederm@xmission.com, ebiggers3@gmail.com,
	gs051095@gmail.com, ktkhai@virtuozzo.com,
	linux-kernel@vger.kernel.org, oleg@redhat.com,
	pasha.tatashin@oracle.com, riel@redhat.com,
	rppt@linux.vnet.ibm.com, wangkefeng.wang@huawei.com
Subject: Re: KASAN: use-after-free Read in alloc_pid
Date: Sat, 21 Apr 2018 19:43:18 +0900	[thread overview]
Message-ID: <12b09710-ddc3-7948-b24e-487c514f028e@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <201804102333.BCC87582.MFHFOQFOOJLVtS@I-love.SAKURA.ne.jp>

On 2018/04/10 23:33, Tetsuo Handa wrote:
> syzbot wrote:
>> syzbot has found reproducer for the following crash on upstream commit
>> c18bb396d3d261ebbb4efbc05129c5d354c541e4 (Tue Apr 10 00:04:10 2018 +0000)
>> Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
>> syzbot dashboard link:  
>> https://syzkaller.appspot.com/bug?extid=7a1cff37dbbef9e7ba4c
>>
> While we are waiting for
> 
>   rpc_pipefs: fix double-dput()
>   rpc_pipefs: deal with early sget() failures
>   kernfs: deal with early sget() failures
>   procfs: deal with early sget() failures
>   orangefs_kill_sb(): deal with allocation failures
>   nfsd_umount(): deal with early sget() failures
>   nfs: avoid double-free on early sget() failures
>   jffs2_kill_sb(): deal with failed allocations
>   hypfs_kill_super(): deal with failed allocations
> 
> in https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git/log/?h=for-linus ,
> I think the patch at
> 
>   WARNING in kill_block_super
>   https://syzkaller.appspot.com/bug?id=588996a25a2587be2e3a54e8646728fb9cae44e7
> 
> is better.
> 

OK. The patch was sent to linux.git as commit 8e04944f0ea8b838.

#syz fix: mm,vmscan: Allow preallocating memory for register_shrinker().

  reply	other threads:[~2018-04-21 10:44 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-01  8:21 syzbot
2018-04-02 23:00 ` Eric W. Biederman
2018-04-03  3:10   ` Eric Biggers
2018-04-03 10:45     ` Tetsuo Handa
2018-04-10 14:11 ` syzbot
2018-04-10 14:33   ` Tetsuo Handa
2018-04-21 10:43     ` Tetsuo Handa [this message]
2018-04-24 16:33       ` Eric W. Biederman

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