| Message ID | 20240401063418.596364-1-aaprelkov@usergate.com |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: aic79xx: add scb NULL check in ahd_handle_ign_wide_residue() | expand |
diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic79xx_core.c index 3e3100dbfda3..bac23ee11c62 100644 --- a/drivers/scsi/aic7xxx/aic79xx_core.c +++ b/drivers/scsi/aic7xxx/aic79xx_core.c @@ -5664,7 +5664,7 @@ ahd_handle_ign_wide_residue(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) * Perhaps add datadir to some spare bits in the hscb? */ if ((ahd_inb(ahd, SEQ_FLAGS) & DPHASE) == 0 - || ahd_get_transfer_dir(scb) != CAM_DIR_IN) { + || (scb && ahd_get_transfer_dir(scb) != CAM_DIR_IN)) { /* * Ignore the message if we haven't * seen an appropriate data phase yet.
If ahd_lookup_scb() returns NULL and (ahd_inb() & DPHASE) != 0 NULL pointer dereference happens inside ahd_get_transfer_dir() Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Aleksandr Aprelkov <aaprelkov@usergate.com> --- drivers/scsi/aic7xxx/aic79xx_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)