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| author | Daniel Wagner <dwagner@suse.de> | 2021-09-02 12:20:02 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-09-13 18:04:04 +0300 |
| commit | 9edceaf43050f5ba1dd7d0011bcf68a736a17743 (patch) | |
| tree | a6e87f932394ccbc624e92414f4306d543f76af9 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 0bd46e22c5ec3dbfb81b60de475151e3f6b411c2 (diff) | |
| download | linux-9edceaf43050f5ba1dd7d0011bcf68a736a17743.tar.xz | |
nvme: avoid race in shutdown namespace removal
When we remove the siblings entry, we update ns->head->list, hence we
can't separate the removal and test for being empty. They have to be
in the same critical section to avoid a race.
To avoid breaking the refcounting imbalance again, add a list empty
check to nvme_find_ns_head.
Fixes: 5396fdac56d8 ("nvme: fix refcounting imbalance when all paths are down")
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions