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Volker Lendecke adef87a621 ctdb: Fix a crash in run_proc_signal_handler()
If a script times out the caller can talloc_free() the script_list
output of run_event_recv, which talloc_free's proc->output from
run_proc.c as well. If the script generates further output after the
timeout and then exits after a while, the SIGCHLD handler in the
eventd tries to read into proc->output, which was already free'ed.

Fix this by not doing just a talloc_steal but a talloc_move. This way
proc_read_handler() called from run_proc_signal_handler() does not try
to realloc the stale reference to proc->output but gets a NULL
reference.

I don't really know how to do a knownfail in ctdb, so this commit
actually activates catching the signal by waiting long enough for
22.bar to exit and generate the SIGCHLD.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=14475
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2021-05-18 10:42:32 +00:00
..
2021-03-09 22:36:28 +00:00
2007-06-07 22:16:48 +10:00
2009-02-07 08:10:34 +11:00
2020-09-11 03:43:40 +00:00

This is the release version of CTDB, a clustered implementation of TDB
database used by Samba and other projects to store temporary data.

This software is freely distributable under the GNU public license,
a copy of which you should have received with this software (in a file
called COPYING).

For documentation on CTDB, please visit CTDB website http://ctdb.samba.org.