git: b064a4c9eed5 - main - smartpqi: Drop spinlock before freeing memory
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Thu, 19 Oct 2023 03:06:35 UTC
The branch main has been updated by imp:
URL: https://cgit.FreeBSD.org/src/commit/?id=b064a4c9eed5b1dd2a40fc4fd2cb7e738b681547
commit b064a4c9eed5b1dd2a40fc4fd2cb7e738b681547
Author: John F. Carr <jfc@mit.edu>
AuthorDate: 2023-10-19 03:02:42 +0000
Commit: Warner Losh <imp@FreeBSD.org>
CommitDate: 2023-10-19 03:06:40 +0000
smartpqi: Drop spinlock before freeing memory
pqisrc_free_device frees the device softc with the os spinlock
held. This causes crashes when devices are removed because the memory
free might sleep (which is prohibited with spin locks held). Drop the
spinlock before releasing the memory.
MFC After: 2 days
PR: 273289
Reviewed by: imp
---
sys/dev/smartpqi/smartpqi_discovery.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sys/dev/smartpqi/smartpqi_discovery.c b/sys/dev/smartpqi/smartpqi_discovery.c
index 7e084a81cd89..ac37c2233762 100644
--- a/sys/dev/smartpqi/smartpqi_discovery.c
+++ b/sys/dev/smartpqi/smartpqi_discovery.c
@@ -1671,11 +1671,11 @@ pqisrc_free_device(pqisrc_softstate_t * softs, pqi_scsi_dev_t *device)
pqisrc_delete_softs_entry(softs, device);
DBG_NOTE("Removed memory for device : B %d: T %d: L %d\n",
device->bus, device->target, device->lun);
+ OS_RELEASE_SPINLOCK(&softs->devlist_lock);
pqisrc_device_mem_free(softs, device);
+ } else {
+ OS_RELEASE_SPINLOCK(&softs->devlist_lock);
}
-
- OS_RELEASE_SPINLOCK(&softs->devlist_lock);
-
}