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Commit e426f0d2 authored by Doug Oucharek's avatar Doug Oucharek Committed by Greg Kroah-Hartman
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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: default avatarDoug Oucharek <doug.s.oucharek@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8106
Reviewed-on: http://review.whamcloud.com/19993


Reviewed-by: default avatarJames Simmons <uja.ornl@yahoo.com>
Reviewed-by: default avatarLiang Zhen <liang.zhen@intel.com>
Reviewed-by: default avatarOleg Drokin <oleg.drokin@intel.com>
Signed-off-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent bce1bbf4

drivers/staging/lustre/lnet/lnet/lib-move.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

	}