diff options
| author | Sreekanth Reddy <sreekanth.reddy@broadcom.com> | 2022-09-06 19:19:08 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-15 12:23:52 +0200 |
| commit | d4959d09b76eb7a4146f5133962b88d3bddb63d6 (patch) | |
| tree | e691e823e3f797130315c43c9c2c865fef07d4d3 | |
| parent | 985abab0e740a0a9d659c2355c189d76f570d385 (diff) | |
| download | linux-d4959d09b76eb7a4146f5133962b88d3bddb63d6.tar.gz linux-d4959d09b76eb7a4146f5133962b88d3bddb63d6.tar.bz2 linux-d4959d09b76eb7a4146f5133962b88d3bddb63d6.zip | |
scsi: mpt3sas: Fix use-after-free warning
commit 991df3dd5144f2e6b1c38b8d20ed3d4d21e20b34 upstream.
Fix the following use-after-free warning which is observed during
controller reset:
refcount_t: underflow; use-after-free.
WARNING: CPU: 23 PID: 5399 at lib/refcount.c:28 refcount_warn_saturate+0xa6/0xf0
Link: https://lore.kernel.org/r/20220906134908.1039-2-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_scsih.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 79c5a193308f..8fb7491c5bc0 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -2804,6 +2804,7 @@ static struct fw_event_work *dequeue_next_fw_event(struct MPT3SAS_ADAPTER *ioc) fw_event = list_first_entry(&ioc->fw_event_list, struct fw_event_work, list); list_del_init(&fw_event->list); + fw_event_work_put(fw_event); } spin_unlock_irqrestore(&ioc->fw_event_lock, flags); @@ -2840,7 +2841,6 @@ _scsih_fw_event_cleanup_queue(struct MPT3SAS_ADAPTER *ioc) if (cancel_work_sync(&fw_event->work)) fw_event_work_put(fw_event); - fw_event_work_put(fw_event); } } |