bnxt_en: Fix NULL pointer dereference at bnxt_free_irq().

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When open fails during ethtool -L ring change, for example, the driver
may crash at bnxt_free_irq() because bp->bnapi is NULL.

If we fail to allocate all the new rings, bnxt_open_nic() will free
all the memory including bp->bnapi.  Subsequent call to bnxt_close_nic()
will try to dereference bp->bnapi in bnxt_free_irq().

Fix it by checking for !bp->bnapi in bnxt_free_irq().

Fixes: e5811b8c09 ("bnxt_en: Add IRQ remapping logic.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Michael Chan 2018-04-11 11:50:18 -04:00 • committed by David S. Miller

parent 11c3ec7bb9

commit cb98526bf9

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/broadcom/bnxt/bnxt.c

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