diff options
| author | Robin Holt <holt@sgi.com> | 2009-01-29 23:25:07 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-30 03:04:43 +0100 |
| commit | 17e2161654da4e6bdfd8d53d4f52e820ee93f423 (patch) | |
| tree | 73963484f16dc6fdfc2f84200bc40c060a36ce70 /drivers/misc/sgi-xp | |
| parent | sgi-xpc: ensure flags are updated before bte_copy (diff) | |
| download | linux-17e2161654da4e6bdfd8d53d4f52e820ee93f423.tar.xz linux-17e2161654da4e6bdfd8d53d4f52e820ee93f423.zip | |
sgi-xpc: Remove NULL pointer dereference.
If the bte copy fails, the attempt to retrieve payloads merely returns a
null pointer deref and not NULL as was expected.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Dean Nelson <dcn@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-xp')
| -rw-r--r-- | drivers/misc/sgi-xp/xpc_sn2.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c index 7aafb8a91945..7d05fb5f4fee 100644 --- a/drivers/misc/sgi-xp/xpc_sn2.c +++ b/drivers/misc/sgi-xp/xpc_sn2.c @@ -1957,11 +1957,13 @@ xpc_get_deliverable_payload_sn2(struct xpc_channel *ch) msg = xpc_pull_remote_msg_sn2(ch, get); - DBUG_ON(msg != NULL && msg->number != get); - DBUG_ON(msg != NULL && (msg->flags & XPC_M_SN2_DONE)); - DBUG_ON(msg != NULL && !(msg->flags & XPC_M_SN2_READY)); + if (msg != NULL) { + DBUG_ON(msg->number != get); + DBUG_ON(msg->flags & XPC_M_SN2_DONE); + DBUG_ON(!(msg->flags & XPC_M_SN2_READY)); - payload = &msg->payload; + payload = &msg->payload; + } break; } |