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SubjectRe: INFO: task hung in request_key_tag
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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.

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

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