Messages in this thread Patch in this message |  | | Date | Tue, 17 Jan 2012 13:48:34 -0800 | | From | Tejun Heo <> | | Subject | Re: Kernel crash in icq_free_icq_rcu |
| |
On Tue, Jan 17, 2012 at 03:18:23PM -0500, Vivek Goyal wrote: > Hi Tejun, > > With latest linus kernel, I see following crash. I was running some > scripts which create cgroups and launch fio jobs in those groups. In > a separate window I wrote a script to change the IO scheduler on the > device in a loop while IO was happening on the device. After few > seconds I see following. So far I tried it twice and reproduced it > both the times in first few seconds.
Does the following patch make any difference?
diff --git a/block/elevator.c b/block/elevator.c index 91e18f8..b5a94ed 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -105,6 +105,7 @@ int elv_rq_merge_ok(struct request *rq, struct bio *bio) if (bio_integrity(bio) != blk_integrity_rq(rq)) return 0; + return 0; if (!elv_iosched_allow_merge(rq, bio)) return 0;
|  |