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If path_rec_start() returns error, call path_free() only if the path was newly-created. If we free an existing path whose valid flag was zero, (but do not detach it from the list) we cause corruption of the path list (of which it is a member), and get a kernel crash. The simplest solution is to not free an existing path -- just leave it in the list as-is (i.e., with its valid flag cleared). Thanks to Yossi Etigin of Voltaire for identifying the problem flow which caused the kernel crash. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Moni Shua <monis@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com> |
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