| From | Jiri Slaby <> | Subject | [PATCH 3.12 35/72] irda: precedence bug in irlmp_seq_hb_idx() | Date | Mon, 23 Nov 2015 14:08:57 +0100 |
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From: Dan Carpenter <dan.carpenter@oracle.com>
3.12-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 50010c20597d14667eff0fdb628309986f195230 ]
This is decrementing the pointer, instead of the value stored in the pointer. KASan detects it as an out of bounds reference.
Reported-by: "Berry Cheng 程君(成淼)" <chengmiao.cj@alibaba-inc.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- net/irda/irlmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/irda/irlmp.c b/net/irda/irlmp.c index 98ad6ec4bd3c..8ad149478e19 100644 --- a/net/irda/irlmp.c +++ b/net/irda/irlmp.c @@ -1876,7 +1876,7 @@ static void *irlmp_seq_hb_idx(struct irlmp_iter_state *iter, loff_t *off) for (element = hashbin_get_first(iter->hashbin); element != NULL; element = hashbin_get_next(iter->hashbin)) { - if (!off || *off-- == 0) { + if (!off || (*off)-- == 0) { /* NB: hashbin left locked */ return element; } -- 2.6.3
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