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ibmvnic: Do not process device remove during device reset

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The ibmvnic driver does not check the device state when the device
is removed. If the device is removed while a device reset is being
processed, the remove may free structures needed by the reset,
causing an oops.

Fix this by checking the device state before processing device remove.

Signed-off-by: Juliet Kim <julietk@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Juliet Kim
2020-03-10 09:23:58 -05:00
committed by David S. Miller
parent ece0d7bd74
commit 7d7195a026
2 changed files with 27 additions and 3 deletions
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6
drivers/net/ethernet/ibm/ibmvnic.h
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@@ -941,7 +941,8 @@ enum vnic_state {VNIC_PROBING = 1,
VNIC_CLOSING,
VNIC_CLOSED,
VNIC_REMOVING,
VNIC_REMOVED};
VNIC_REMOVED,
VNIC_RESETTING};
enum ibmvnic_reset_reason {VNIC_RESET_FAILOVER = 1,
VNIC_RESET_MOBILITY,
@@ -1090,4 +1091,7 @@ struct ibmvnic_adapter {
struct ibmvnic_tunables desired;
struct ibmvnic_tunables fallback;
/* Used for serializatin of state field */
spinlock_t state_lock;
};