Messages in this thread | | | Subject | Re: [PATCH] drbd: Fix kernel_sendmsg() usage | From | Christoph Lechleitner <> | Date | Tue, 8 Nov 2016 15:03:08 +0100 |
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Am 2016-11-08 um 14:43 schrieb Lars Ellenberg: > From 3a5859e696178e31a25e65de58c461046fc52beb Mon Sep 17 00:00:00 2001 > From: Richard Weinberger <richard@nod.at> > Date: Tue, 8 Nov 2016 11:43:09 +0100 > Subject: [PATCH] drbd: Fix kernel_sendmsg() usage - potential NULL deref > drbd: Fix kernel_sendmsg() usage - potential NULL deref
> Even with this error exposed, to trigger the bug, we would need to have > an environment (config or otherwise) causing us to not use sendpage() > for larger transfers, a flaky connection, and have it fail "just at the > right time". Apparently that was unlikely enough for most, so this went > unnoticed for years.
Our drbd configuration was created some 8 years ago. Maybe I should have read more migration tips when upgrading again and again, sorry ;-)
But a 30cm Cat6 cable directly connecting 2 dedicated ethernet ports should not match the term "flaky connection".
FYI: I co-own the company that hired Richard to track down this bug, that repeatedly (~15 times) forced us to hard-reset servers hosting tens of virtual root servers for our customers.
Regards, Christoph Lechleitner
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