* [MPTCP] Re: [PATCH net-next 0/2] mptcp: fix syzkaller splats
@ 2020-01-27 15:53 Christoph Paasch
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From: Christoph Paasch @ 2020-01-27 15:53 UTC (permalink / raw)
To: mptcp
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On 27/01/20 - 00:40:59, Florian Westphal wrote:
> This fixes the syzkaller splats with reproducers that Christoph forwarded
> to the mailing list.
>
> First patch fixes a crash with set/getsockopt interface and resolves
> a lockdep splat due to calls to rtnl_lock while already holding the msk lock.
> I resolved both in the same patch because the fix touches the same spot.
>
> Second patch fixes another lockdep splat, this time during mptcp_close
> but also related to rtnl_lock.
>
> See patches for more detailed explanation.
>
> protocol.c | 51 +++++++++++++++++++++++++++++++++------------------
> 1 file changed, 33 insertions(+), 18 deletions(-)
syzkaller has been running for 300 hours of fuzzing and none of the previous
reported issues triggered. All good! Also, no new issues for now.
Tested-by: Christoph Paasch <cpaasch(a)apple.com>
Cheers,
Christoph
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2020-01-27 15:53 [MPTCP] Re: [PATCH net-next 0/2] mptcp: fix syzkaller splats Christoph Paasch
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