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[v2,09/14] RDS: IB: handle rds_ibdev release case instead of crashing the kernel

Message ID 1443633873-13359-10-git-send-email-santosh.shilimkar@oracle.com (mailing list archive)
State Changes Requested
Headers show

Commit Message

Santosh Shilimkar Sept. 30, 2015, 5:24 p.m. UTC 
From: Santosh Shilimkar <ssantosh@kernel.org>

Just in case we are still handling the QP receive completion while the
rds_ibdev is released, drop the connection instead of crashing the kernel.

Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
---
 net/rds/ib_cm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 8f51d0d..2b2370e 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -285,7 +285,8 @@  static void rds_ib_tasklet_fn_recv(unsigned long data)
 	struct rds_ib_device *rds_ibdev = ic->rds_ibdev;
 	struct rds_ib_ack_state state;
 
-	BUG_ON(!rds_ibdev);
+	if (!rds_ibdev)
+		rds_conn_drop(conn);
 
 	rds_ib_stats_inc(s_ib_tasklet_call);