Roland Dreier 6ef190cc92 IPoIB: Fix crash when path record fails after path flush ... Commit ee1e2c82 ("IPoIB: Refresh paths instead of flushing them on SM change events") changed how paths are flushed on an SM event. This change introduces a problem if the path record query triggered by fails, causing path->ah to become NULL. A later successful path query will then trigger WARN_ON() in path_rec_completion(), and crash because path->ah has already been freed, so the ipoib_put_ah() inside the lock in path_rec_completion() may actually drop the last reference (contrary to the comment that claims this is safe). Fix this by updating path->ah and freeing old_ah only when the path record query is successful. This prevents the neighbour AH and that path AH from getting out of sync. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1194> Reported-by: Rabah Salem <ravah@mellanox.com> Debugged-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-09-25 16:37:03 -07:00
..
Kconfig	IPoIB: Correct help text for INFINIBAND_IPOIB_DEBUG	2008-07-24 20:37:25 -07:00
Makefile	IPoIB: Add basic ethtool support	2008-04-16 21:09:32 -07:00
ipoib.h	IPoIB: Fix deadlock on RTNL between bcast join comp and ipoib_stop()	2008-09-16 11:57:45 -07:00
ipoib_cm.c	IPoIB/cm: Use vmalloc() to allocate rx_rings	2008-08-08 15:51:29 -07:00
ipoib_ethtool.c	IPoIB: add LRO support	2008-07-14 23:48:48 -07:00
ipoib_fs.c	RDMA: Remove subversion $Id tags	2008-07-14 23:48:44 -07:00
ipoib_ib.c	IPoIB: Refresh paths instead of flushing them on SM change events	2008-07-14 23:48:49 -07:00
ipoib_main.c	IPoIB: Fix crash when path record fails after path flush	2008-09-25 16:37:03 -07:00
ipoib_multicast.c	IPoIB: Fix deadlock on RTNL between bcast join comp and ipoib_stop()	2008-09-16 11:57:45 -07:00
ipoib_verbs.c	IPoIB: Get rid of ipoib_mcast_detach() wrapper	2008-07-14 23:48:50 -07:00
ipoib_vlan.c	RDMA: Remove subversion $Id tags	2008-07-14 23:48:44 -07:00