Bug#834708: apache2: server locks up with "AH00288: scoreboard is full, not at MaxRequestWorkers"
Source: apache2
Version: 2.4.10-10+deb8u5
Severity: normal
Tags: upstream
Control: forwarded -1 https://bz.apache.org/bugzilla/show_bug.cgi?id=53555
We got hit by this bug on Debian Jessie running on tracker.debian.org.
The server would not accept new connections until we force a restart.
A reload does not help.
In our specific case, it appears to have started after some segfault
in a child process:
[Thu Aug 18 03:40:22.861570 2016] [core:notice] [pid 20708:tid 139737024104320] AH00052: child pid 31262
exit signal Segmentation fault (11)
[Thu Aug 18 03:40:27.869195 2016] [mpm_worker:error] [pid 20708:tid 139737024104320] AH00288: scoreboard
is full, not at MaxRequestWorkers
[Thu Aug 18 03:40:27.869341 2016] [core:notice] [pid 20708:tid 139737024104320] AH00052: child pid 27873
exit signal Segmentation fault (11)
[Thu Aug 18 03:40:27.869363 2016] [mpm_worker:warn] [pid 20708:tid 139737024104320] AH00291: long lost ch
ild came home! (pid 27873)
[Thu Aug 18 03:40:28.870591 2016] [mpm_worker:error] [pid 20708:tid 139737024104320] AH00288: scoreboard
is full, not at MaxRequestWorkers
It would be nice if we could have a fix for this (possibly even in stable).
Cheers,
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
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