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SubjectRe: KASAN: use-after-free Read in alloc_pid
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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().

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