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Groups > linux.kernel > #1219571
| From | "Richard W.M. Jones" <rjones@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: __blkg_lookup oops with 4.2-rcX |
| Date | 2015-09-05 17:50 +0200 |
| Message-ID | <q5nT4-4L2-19@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <q4iiK-JG-5@gated-at.bofh.it> <q4WJb-86i-11@gated-at.bofh.it> <q52OB-53-1@gated-at.bofh.it> <q565Q-4De-13@gated-at.bofh.it> <q5nJo-4zK-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Sat, Sep 05, 2015 at 04:34:39PM +0100, Richard W.M. Jones wrote:
> [ 52.259269] BUG: unable to handle kernel NULL pointer dereference at 00000000000009c8
> [ 52.259269] IP: [<ffffffff813f8b10>] __blkg_lookup+0x40/0xe0
And also:
$ addr2line -e /usr/lib/debug/lib/modules/4.3.0-0.rc0.git7.1.rwmj3.fc24.x86_64/vmlinux ffffffff813f8b10
/usr/src/debug/kernel-4.2.fc24/linux-4.3.0-0.rc0.git7.1.rwmj3.fc24.x86_64/block/blk-cgroup.c:158
152 /*
153 * Hint didn't match. Look up from the radix tree. Note that the
154 * hint can only be updated under queue_lock as otherwise @blkg
155 * could have already been removed from blkg_tree. The caller is
156 * responsible for grabbing queue_lock if @update_hint.
157 */
158 blkg = radix_tree_lookup(&blkcg->blkg_tree, q->id);
159 if (blkg && blkg->q == q) {
160 if (update_hint) {
161 lockdep_assert_held(q->queue_lock);
162 rcu_assign_pointer(blkcg->blkg_hint, blkg);
163 }
164 return blkg;
165 }
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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__blkg_lookup oops with 4.2-rcX Josh Boyer <jwboyer@fedoraproject.org> - 2015-08-30 14:40 +0200
Re: __blkg_lookup oops with 4.2-rcX "Richard W.M. Jones" <rjones@redhat.com> - 2015-08-30 20:10 +0200
Re: __blkg_lookup oops with 4.2-rcX Tejun Heo <tj@kernel.org> - 2015-09-02 17:00 +0200
Re: __blkg_lookup oops with 4.2-rcX Tejun Heo <tj@kernel.org> - 2015-09-02 17:40 +0200
Re: __blkg_lookup oops with 4.2-rcX "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-04 12:50 +0200
Re: __blkg_lookup oops with 4.2-rcX Tejun Heo <tj@kernel.org> - 2015-09-04 19:20 +0200
Re: __blkg_lookup oops with 4.2-rcX "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-04 22:50 +0200
Re: __blkg_lookup oops with 4.2-rcX "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-05 17:50 +0200
Re: __blkg_lookup oops with 4.2-rcX Tejun Heo <tj@kernel.org> - 2015-09-05 20:40 +0200
[PATCH block/for-linus] block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg Tejun Heo <tj@kernel.org> - 2015-09-05 21:50 +0200
Re: [PATCH block/for-linus] block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-06 10:40 +0200
Re: [PATCH block/for-linus] block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg Jens Axboe <axboe@kernel.dk> - 2015-09-08 17:40 +0200
Re: [PATCH block/for-linus] block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg Tejun Heo <tj@kernel.org> - 2015-09-08 17:40 +0200
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