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| author | Brett Creeley <brett@pensando.io> | 2022-10-18 02:31:23 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-10-19 05:19:31 +0300 |
| commit | aa1d7e1267c12e07d979aa34c613716a89029db2 (patch) | |
| tree | 83a61b2957c1acde64372aefcfc9c6f923efa3c6 /net/sched/sch_cake.c | |
| parent | d8b57135fd9ffe9a5b445350a686442a531c5339 (diff) | |
| download | linux-aa1d7e1267c12e07d979aa34c613716a89029db2.tar.xz | |
ionic: catch NULL pointer issue on reconfig
It's possible that the driver will dereference a qcq that doesn't exist
when calling ionic_reconfigure_queues(), which causes a page fault BUG.
If a reduction in the number of queues is followed by a different
reconfig such as changing the ring size, the driver can hit a NULL
pointer when trying to clean up non-existent queues.
Fix this by checking to make sure both the qcqs array and qcq entry
exists bofore trying to use and free the entry.
Fixes: 101b40a0171f ("ionic: change queue count with no reset")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/20221017233123.15869-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/sched/sch_cake.c')
0 files changed, 0 insertions, 0 deletions