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Groups > linux.kernel > #1299146 > unrolled thread
| Started by | Insu Yun <wuninsu@gmail.com> |
|---|---|
| First post | 2015-12-29 22:40 +0100 |
| Last post | 2015-12-29 22:40 +0100 |
| Articles | 1 — 1 participant |
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[PATCH] mISDN: correctly handling failed allocation in fsm Insu Yun <wuninsu@gmail.com> - 2015-12-29 22:40 +0100
| From | Insu Yun <wuninsu@gmail.com> |
|---|---|
| Date | 2015-12-29 22:40 +0100 |
| Subject | [PATCH] mISDN: correctly handling failed allocation in fsm |
| Message-ID | <qLa9P-5VQ-7@gated-at.bofh.it> |
Since kzalloc can be failed in memory pressure, NULL dereference can be happened. Signed-off-by: Insu Yun <wuninsu@gmail.com> --- drivers/isdn/mISDN/fsm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c index 26477d4..3c3ffb0 100644 --- a/drivers/isdn/mISDN/fsm.c +++ b/drivers/isdn/mISDN/fsm.c @@ -34,6 +34,8 @@ mISDN_FsmNew(struct Fsm *fsm, fsm->jumpmatrix = kzalloc(sizeof(FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL); + if (!fsm->jumpmatrix) + return; for (i = 0; i < fncount; i++) if ((fnlist[i].state >= fsm->state_count) || -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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