Dear Dave,
I've found that crash does not find all tasks on OpenVZ kernels.
Currently pid_ns check in refresh_hlist_task_table_v3() checks only first entry
in pid_hash[i] hlist. If this entry is not related to init_pid_ns
it forget about other entries in hlist and switches to next element
in pid_hash array.
Attached patch fix this problem.
Thank you,
Vasily Averin
diff -up crash-7.0.8/task.c.pidns crash-7.0.8/task.c
--- crash-7.0.8/task.c.pidns 2014-09-11 11:08:25.000000000 -0400
+++ crash-7.0.8/task.c 2014-09-19 06:15:42.000000000 -0400
@@ -2033,7 +2033,7 @@ do_chained:
* Use init_pid_ns level 0 (PIDTYPE_PID).
*/
if (upid_ns != tt->init_pid_ns)
- continue;
+ goto chain_next;
pid = upid - OFFSET(pid_numbers);
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