From e426f0d24e1c92f54098758cc83eb16989c48855 Mon Sep 17 00:00:00 2001 From: Doug Oucharek Date: Tue, 16 Aug 2016 16:19:29 -0400 Subject: [PATCH] staging: lustre: lnet: Do not drop message when shutting down LNet There is a case in lnet_parse() where we discover that LNet is shutting down but we continue to use the NI when we drop the message and end up calling ko2iblnd_check_send_locked() which tries to allocate from the Tx pool which has been cleaned up already. This triggers a NULL pointer dereference. This fix just returns from lnet_parse() when we disover LNet is shutting down. Signed-off-by: Doug Oucharek Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8106 Reviewed-on: http://review.whamcloud.com/19993 Reviewed-by: James Simmons Reviewed-by: Liang Zhen Reviewed-by: Oleg Drokin Signed-off-by: James Simmons Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lnet/lnet/lib-move.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/staging/lustre/lnet/lnet/lib-move.c b/drivers/staging/lustre/lnet/lnet/lib-move.c index 6a3f2e116ff6..5598fa876426 100644 --- a/drivers/staging/lustre/lnet/lnet/lib-move.c +++ b/drivers/staging/lustre/lnet/lnet/lib-move.c @@ -2002,6 +2002,9 @@ lnet_parse(lnet_ni_t *ni, lnet_hdr_t *hdr, lnet_nid_t from_nid, libcfs_nid2str(from_nid), libcfs_nid2str(src_nid), lnet_msgtyp2str(type), rc); lnet_msg_free(msg); + if (rc == -ESHUTDOWN) + /* We are shutting down. Don't do anything more */ + return 0; goto drop; } -- 2.39.5