mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-05 18:39:59 +00:00
Code Issues Releases Wiki Activity

ibmvnic: Do not process reset during or after device removal

Browse source 
Currently, the ibmvnic driver will not schedule device resets
if the device is being removed, but does not check the device
state before the reset is actually processed. This leads to a race
where a reset is scheduled with a valid device state but is
processed after the driver has been removed, resulting in an oops.

Fix this by checking the device state before processing a queued
reset event.

Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Tested-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Falcon 2019-08-27 11:10:04 -05:00 committed by David S. Miller
parent 0754b4e8cd
commit 36f1031c51
1 changed files with 5 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/net/ethernet/ibm/ibmvnic.c
View file

@ -1983,6 +1983,10 @@ static void __ibmvnic_reset(struct work_struct *work)
rwi = get_next_rwi(adapter);
while (rwi) {
if (adapter->state == VNIC_REMOVING ||
adapter->state == VNIC_REMOVED)
goto out;
if (adapter->force_reset_recovery) {
adapter->force_reset_recovery = false;
rc = do_hard_reset(adapter, rwi, reset_state);
@ -2007,7 +2011,7 @@ static void __ibmvnic_reset(struct work_struct *work)
netdev_dbg(adapter->netdev, "Reset failed\n");
free_all_rwi(adapter);
}
out:
adapter->resetting = false;
if (we_lock_rtnl)
rtnl_unlock();