From: George Kennedy george.kennedy@oracle.com
[ Upstream commit 288315e95264b6355e26609e9dec5dc4563d4ab0 ]
sym_int_sir() in sym_hipd.c does not check the command pointer for NULL before using it in debug message prints.
Suggested-by: Matthew Wilcox matthew.wilcox@oracle.com Signed-off-by: George Kennedy george.kennedy@oracle.com Reviewed-by: Mark Kanda mark.kanda@oracle.com Acked-by: Matthew Wilcox matthew.wilcox@oracle.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/sym53c8xx_2/sym_hipd.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c index 378af306fda17..b87b6c63431dd 100644 --- a/drivers/scsi/sym53c8xx_2/sym_hipd.c +++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c @@ -4371,6 +4371,13 @@ static void sym_nego_rejected(struct sym_hcb *np, struct sym_tcb *tp, struct sym OUTB(np, HS_PRT, HS_BUSY); }
+#define sym_printk(lvl, tp, cp, fmt, v...) do { \ + if (cp) \ + scmd_printk(lvl, cp->cmd, fmt, ##v); \ + else \ + starget_printk(lvl, tp->starget, fmt, ##v); \ +} while (0) + /* * chip exception handler for programmed interrupts. */ @@ -4416,7 +4423,7 @@ static void sym_int_sir(struct sym_hcb *np) * been selected with ATN. We do not want to handle that. */ case SIR_SEL_ATN_NO_MSG_OUT: - scmd_printk(KERN_WARNING, cp->cmd, + sym_printk(KERN_WARNING, tp, cp, "No MSG OUT phase after selection with ATN\n"); goto out_stuck; /* @@ -4424,7 +4431,7 @@ static void sym_int_sir(struct sym_hcb *np) * having reselected the initiator. */ case SIR_RESEL_NO_MSG_IN: - scmd_printk(KERN_WARNING, cp->cmd, + sym_printk(KERN_WARNING, tp, cp, "No MSG IN phase after reselection\n"); goto out_stuck; /* @@ -4432,7 +4439,7 @@ static void sym_int_sir(struct sym_hcb *np) * an IDENTIFY. */ case SIR_RESEL_NO_IDENTIFY: - scmd_printk(KERN_WARNING, cp->cmd, + sym_printk(KERN_WARNING, tp, cp, "No IDENTIFY after reselection\n"); goto out_stuck; /* @@ -4461,7 +4468,7 @@ static void sym_int_sir(struct sym_hcb *np) case SIR_RESEL_ABORTED: np->lastmsg = np->msgout[0]; np->msgout[0] = M_NOOP; - scmd_printk(KERN_WARNING, cp->cmd, + sym_printk(KERN_WARNING, tp, cp, "message %x sent on bad reselection\n", np->lastmsg); goto out; /*