| Message ID | 20190813163952.23486-4-mchristi@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | nbd: cmd timeout fixes V2 | expand |
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index c6ff8f922fd7..ebc98cf76365 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -373,8 +373,10 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req, } config = nbd->config; - if (!mutex_trylock(&cmd->lock)) + if (!mutex_trylock(&cmd->lock)) { + nbd_config_put(nbd); return BLK_EH_RESET_TIMER; + } if (config->num_connections > 1) { dev_err_ratelimited(nbd_to_dev(nbd),
Fix bug added with the patch: commit 8f3ea35929a0806ad1397db99a89ffee0140822a Author: Josef Bacik <josef@toxicpanda.com> Date: Mon Jul 16 12:11:35 2018 -0400 nbd: handle unexpected replies better where if the timeout handler runs when the completion path is and we fail to grab the mutex in the timeout handler we will leave a config reference and cannot free the config later. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Mike Christie <mchristi@redhat.com> --- drivers/block/nbd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)