* stable regression: revert request for netfilter ipv6 defrag bug
@ 2018-10-24 10:31 Florian Westphal
2018-10-31 15:07 ` Sasha Levin
0 siblings, 1 reply; 2+ messages in thread
From: Florian Westphal @ 2018-10-24 10:31 UTC (permalink / raw)
To: stable; +Cc: netfilter-devel
Hi,
please consider reverting
commit 84379c9afe011020e797e3f50a662b08a6355dcf
netfilter: ipv6: nf_defrag: drop skb dst before queueing
It causes kernel crash for locally generated ipv6 fragments
when netfilter ipv6 defragmentation is used.
The faulty commit is not essential for -stable, it only
delays netns teardown for longer than needed when that netns
still has ipv6 frags queued. Much better than crash :-/
commit ids are:
4.4.y: not affected (not backported)
4.9.y: backported as ad8b1ffc3efae2f65080bdb11145c87d299b8f9a
4.14.y: backported as 28c74ff85efd192aeca9005499ca50c24d795f61
4.18.y: (first affected kernel): 84379c9afe011020e797e3f50a662b08a6355dcf
For 4.19.y, you could also wait for a bug fix to hit Linus tree,
I can ping you again once its in:
https://patchwork.ozlabs.org/patch/988233/
Thanks,
Florian
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: stable regression: revert request for netfilter ipv6 defrag bug
2018-10-24 10:31 stable regression: revert request for netfilter ipv6 defrag bug Florian Westphal
@ 2018-10-31 15:07 ` Sasha Levin
0 siblings, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2018-10-31 15:07 UTC (permalink / raw)
To: Florian Westphal; +Cc: stable, netfilter-devel
On Wed, Oct 24, 2018 at 12:31:04PM +0200, Florian Westphal wrote:
>Hi,
>
>please consider reverting
>
>commit 84379c9afe011020e797e3f50a662b08a6355dcf
>netfilter: ipv6: nf_defrag: drop skb dst before queueing
>
>It causes kernel crash for locally generated ipv6 fragments
>when netfilter ipv6 defragmentation is used.
>
>The faulty commit is not essential for -stable, it only
>delays netns teardown for longer than needed when that netns
>still has ipv6 frags queued. Much better than crash :-/
>
>commit ids are:
>4.4.y: not affected (not backported)
>4.9.y: backported as ad8b1ffc3efae2f65080bdb11145c87d299b8f9a
>4.14.y: backported as 28c74ff85efd192aeca9005499ca50c24d795f61
>4.18.y: (first affected kernel): 84379c9afe011020e797e3f50a662b08a6355dcf
>
>For 4.19.y, you could also wait for a bug fix to hit Linus tree,
>I can ping you again once its in:
>https://patchwork.ozlabs.org/patch/988233/
I've queued a revert for 4.18, 4.14, and 4.9. Thank you.
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2018-10-31 15:07 ` Sasha Levin
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