2.6.32-longterm review patch. If anyone has any objections, please let me know.
------------------ commit 2280521719e81919283b82902ac24058f87dfc1b upstream. When pci_pool_alloc fails in mvs_task_prep then task->lldd_task stays NULL but it's later used in mvs_abort_task as slot which is passed to mvs_slot_task_free causing NULL pointer dereference. Just return from mvs_slot_task_free when passed with NULL slot. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=101891 Signed-off-by: DÄvis MosÄns <[email protected]> Reviewed-by: Tomas Henzl <[email protected]> Reviewed-by: Johannes Thumshirn <[email protected]> Signed-off-by: James Bottomley <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> (cherry picked from commit cc1875ecbc3c9fb2774097e03870280c91c1e0e1) Signed-off-by: Willy Tarreau <[email protected]> --- drivers/scsi/mvsas/mv_sas.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index 0d21386..e4c01b5 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -1035,6 +1035,8 @@ static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc) static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, struct mvs_slot_info *slot, u32 slot_idx) { + if (!slot) + return; if (!slot->task) return; if (!sas_protocol_ata(task->task_proto)) -- 1.7.12.2.21.g234cd45.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
