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blockjob: Remove the job from the list earlier in block_job_unref()

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When destroying a block job in block_job_unref() we should remove it
from the job list before calling block_job_remove_all_bdrv().

This is because removing the BDSs can trigger an aio_poll() and wake
up other jobs that might attempt to use the block job list. If that
happens the job we're currently destroying should not be in that list
anymore.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2017-11-28 16:53:27 +02:00 • committed by Kevin Wolf
parent c117bb14ff
commit 0a3e155f3f
1 changed files with 1 additions and 1 deletions
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2
blockjob.c
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@ -152,6 +152,7 @@ void block_job_unref(BlockJob *job)
{ {
if (--job->refcnt == 0) { if (--job->refcnt == 0) {
BlockDriverState *bs = blk_bs(job->blk); BlockDriverState *bs = blk_bs(job->blk);
QLIST_REMOVE(job, job_list);
bs->job = NULL; bs->job = NULL;
block_job_remove_all_bdrv(job); block_job_remove_all_bdrv(job);
blk_remove_aio_context_notifier(job->blk, blk_remove_aio_context_notifier(job->blk,
@ -160,7 +161,6 @@ void block_job_unref(BlockJob *job)
blk_unref(job->blk); blk_unref(job->blk);
error_free(job->blocker); error_free(job->blocker);
g_free(job->id); g_free(job->id);
QLIST_REMOVE(job, job_list);
g_free(job); g_free(job);
} }
} }