Re: INFO: task hung in do_ip_vs_set_ctl (2)

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On Tue, Nov 26, 2019 at 07:47:00AM -0800, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c
> Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Date:   Sun Jul 2 23:07:02 2017 +0000
> 
>     Linux 4.12
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11a2b78ce00000
> start commit:   17dec0a9 Merge branch 'userns-linus' of git://git.kernel.o..
> git tree:       net-next
> kernel config:  https://syzkaller.appspot.com/x/.config?x=da08d02b86752ade
> dashboard link: https://syzkaller.appspot.com/bug?extid=7810ed2e0cb359580c17
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=130abb47800000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=150a15bb800000
> 
> Reported-by: syzbot+7810ed2e0cb359580c17@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: 6f7da290413b ("Linux 4.12")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

This bisection is obviously bogus, though oddly enough the bisection log shows
that v4.12 crashed 10/10 times, while v4.12~1 crashed 0/10 times...

Anyway, this bug looks extremely stale, as it only occurred for a 2-week period
in 2018.  Commit 5c64576a77 ("ipvs: fix rtnl_lock lockups caused by
start_sync_thread") might have been the fix, but I'm just invalidating this:

#syz invalid

- Eric



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