tree 4fe58117851c41b2743d4236b1403df78922013e
parent 7589309db4afdb591c727d7bd91a933b2bfbd82d
author Olivier Houchard <cognet@ci0.org> 1584533405 +0100
committer Willy Tarreau <w@1wt.eu> 1585673839 +0200
encoding latin1

BUG/MEDIUM: wdt: Don't ignore WDTSIG and DEBUGSIG in __signal_process_queue().

When running __signal_process_queue(), we ignore most signals. We can't,
however, ignore WDTSIG and DEBUGSIG, otherwise that thread may end up
waiting for another one that could hold a glibc lock, while the other thread
wait for this one to enter debug_handler().
So make sure WDTSIG and DEBUGSIG aren't ignored, if they are defined.
This probably explains the watchdog deadlock described in github issue

This should be backported to 2.1, 2.0 and 1.9.

(cherry picked from commit b0198cc4132381910cdeb9b5a867632b8b83262c)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 565ed0dc0465ad67891b4789f563db96c3143365)
Signed-off-by: Willy Tarreau <w@1wt.eu>