diff options
| author | Scott Bauer <scott.bauer@intel.com> | 2018-06-29 13:03:28 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-24 13:07:11 +0200 |
| commit | 3b4f6a219c582bf950e62cfd7cefe61c87393aa3 (patch) | |
| tree | 94c744d1762e5078fe85d72d31219fca728cd683 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 67a97632c674ef499d0067964f13fe2cf1005668 (diff) | |
nvme: ensure forward progress during Admin passthru
[ Upstream commit cf39a6bc342b980f10f344d88035829638a89a48 ]
If the controller supports effects and goes down during the passthru admin
command we will deadlock during namespace revalidation.
[ 363.488275] INFO: task kworker/u16:5:231 blocked for more than 120 seconds.
[ 363.488290] Not tainted 4.17.0+ #2
[ 363.488296] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 363.488303] kworker/u16:5 D 0 231 2 0x80000000
[ 363.488331] Workqueue: nvme-reset-wq nvme_reset_work [nvme]
[ 363.488338] Call Trace:
[ 363.488385] schedule+0x75/0x190
[ 363.488396] rwsem_down_read_failed+0x1c3/0x2f0
[ 363.488481] call_rwsem_down_read_failed+0x14/0x30
[ 363.488504] down_read+0x1d/0x80
[ 363.488523] nvme_stop_queues+0x1e/0xa0 [nvme_core]
[ 363.488536] nvme_dev_disable+0xae4/0x1620 [nvme]
[ 363.488614] nvme_reset_work+0xd1e/0x49d9 [nvme]
[ 363.488911] process_one_work+0x81a/0x1400
[ 363.488934] worker_thread+0x87/0xe80
[ 363.488955] kthread+0x2db/0x390
[ 363.488977] ret_from_fork+0x35/0x40
Fixes: 84fef62d135b6 ("nvme: check admin passthru command effects")
Signed-off-by: Scott Bauer <scott.bauer@intel.com>
Reviewed-by: Keith Busch <keith.busch@linux.intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions