ionic: disable napi when ionic_lif_init() fails

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When the driver is going through reset, it will eventually call
ionic_lif_init(), which does a lot of re-initialization. One
of the re-initialization steps is to setup the adminq and
enable napi for it.  If something breaks after this point
we can end up with a kernel NULL pointer dereference through
ionic_adminq_napi.

Fix this by making sure to call napi_disable() in the cleanup
path of ionic_lif_init().  This forces any pending napi contexts
to finish and prevents them from being recalled before deleting
the napi context.

Fixes: 77ceb68e29 ("ionic: Add notifyq support")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Brett Creeley 2022-01-24 10:53:09 -08:00 • committed by David S. Miller

parent 238a0f7c2c

commit 43cfed71bd

1 changed files with 1 additions and 0 deletions

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drivers/net/ethernet/pensando/ionic/ionic_lif.c

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