Re: INFO: task hung in do_ip_vs_set_ctl (2)

To: syzbot <syzbot+7810ed2e0cb359580c17@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: INFO: task hung in do_ip_vs_set_ctl (2)
Cc: coreteam@xxxxxxxxxxxxx, davem@xxxxxxxxxxxxx, fw@xxxxxxxxx, horms@xxxxxxxxxxxx, ja@xxxxxx, kadlec@xxxxxxxxxxxxxxxxx, linux-kbuild@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx, mmarek@xxxxxxxx, netdev@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, pablo@xxxxxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx, torvalds@xxxxxxxxxxxxxxxxxxxx, wensong@xxxxxxxxxxxx, yamada.masahiro@xxxxxxxxxxxxx
From: Eric Biggers <ebiggers@xxxxxxxxxx>
Date: Tue, 26 Nov 2019 22:19:34 -0800
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:
> start commit:   17dec0a9 Merge branch 'userns-linus' of git://git.kernel.o..
> git tree:       net-next
> kernel config:
> dashboard link:
> syz repro:
> C reproducer:
> Reported-by: syzbot+7810ed2e0cb359580c17@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: 6f7da290413b ("Linux 4.12")
> For information about bisection process see:

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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