diff options
| author | Kurt Miller <kurt@cvs.openbsd.org> | 2023-05-25 19:35:59 +0000 |
|---|---|---|
| committer | Kurt Miller <kurt@cvs.openbsd.org> | 2023-05-25 19:35:59 +0000 |
| commit | 782ac25a492c27c4e58d297c9151515fde960e35 (patch) | |
| tree | a52fb8854943db9522b2f9647cb33d6d20dcd8c5 /sys/scsi/scsi_base.c | |
| parent | 387a52cad3078ab991ff6b21c12cb842a92e2f2b (diff) | |
Disable witness for mutexes created on the stack which allows
the ddb command 'show witness' to succeed without panicking.
Leaving witness enabled on these mutexes saves a pointer to
struct lock_type on the stack which gets clobbered resulting
in a panic in witness_ddb_display_descendants().
okay miod@
Diffstat (limited to 'sys/scsi/scsi_base.c')
| -rw-r--r-- | sys/scsi/scsi_base.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/scsi/scsi_base.c b/sys/scsi/scsi_base.c index 299509c7bc7..50aa10fd6cd 100644 --- a/sys/scsi/scsi_base.c +++ b/sys/scsi/scsi_base.c @@ -1,4 +1,4 @@ -/* $OpenBSD: scsi_base.c,v 1.280 2022/02/28 14:48:11 krw Exp $ */ +/* $OpenBSD: scsi_base.c,v 1.281 2023/05/25 19:35:58 kurt Exp $ */ /* $NetBSD: scsi_base.c,v 1.43 1997/04/02 02:29:36 mycroft Exp $ */ /* @@ -1497,7 +1497,8 @@ scsi_done(struct scsi_xfer *xs) int scsi_xs_sync(struct scsi_xfer *xs) { - struct mutex cookie = MUTEX_INITIALIZER(IPL_BIO); + struct mutex cookie = MUTEX_INITIALIZER_FLAGS(IPL_BIO, __MTX_NAME, + MTX_NOWITNESS); int error; #ifdef DIAGNOSTIC |