From: Jan Engelhardt <jengelh@inai.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Jens Axboe <axboe@kernel.dk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: NULL deref around blkmq in v4.0-rc1–rc7
Date: Fri, 10 Apr 2015 00:29:02 +0200 (CEST) [thread overview]
Message-ID: <alpine.LSU.2.20.1504092352140.14912@nerf40.vanv.qr> (raw)
In-Reply-To: <CA+55aFwdx1kpHFpfT0Yx9x9Um1+nqBV60tgWVrEe9U0tQTzGyQ@mail.gmail.com>
On Thursday 2015-04-09 23:12, Linus Torvalds wrote:
>That ->sense_buffer thing is supposed to be initialized by the
>blk_mq_ops.init_request() function, which is called - if it exists =
>when the array of requests ('->rqs[]') is initialized.
>[...]
>Does this entirely untested patch make any difference?
Yes, this seems to solve it for me.
>Anyway, I assume that the actual "disk" in question is mpt fusion?
I had two setups, one non-virtual AHCI, and one emulated mpt,
both of which had failed and are now fixed for what I can tell.
next prev parent reply other threads:[~2015-04-09 22:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-08 13:41 NULL deref around xfs " Jan Engelhardt
2015-04-08 15:20 ` Jan Engelhardt
2015-04-09 17:38 ` Linus Torvalds
2015-04-09 18:24 ` NULL deref around blkmq " Jan Engelhardt
2015-04-09 21:12 ` Linus Torvalds
2015-04-09 21:25 ` Jens Axboe
2015-04-09 21:37 ` Linus Torvalds
2015-04-09 21:42 ` Jens Axboe
2015-04-09 22:32 ` Jan Engelhardt
2015-04-09 22:29 ` Jan Engelhardt [this message]
2015-04-10 0:07 ` Linus Torvalds
2015-04-11 17:46 ` Linus Torvalds
2015-04-11 17:47 ` Jens Axboe
2015-04-11 19:48 ` Jan Engelhardt
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