tl;dr;searchable;
Why is my PassengerAgent Processes aborted! signo=SIGSEGV(11), reason=SEGV_MAPERR A blank/empty Host header may be crashing your process when run under apache2
Given:
* Apache/2.4.7 (Ubuntu) * Ruby ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux] * Passenger passenger-5.0.8 / passenger-5.0.6 * HAProxy 1.5
deploy this repo and then make a request with a malformed Host header.
echo -e 'GET / HTTP/1.1\r\nHost: \n\n' |nc localhost 80
While It is a known issue that HTTP/1.1 requires a Host header, and that it’s possible to set the host header for the haproxy health check with:
-
option httpchk OPTIONS * HTTP/1.1rnHost:\ www
It’s not really ideal that passenger crashes:
- pid=19472, timestamp=1432932619
-
Process aborted! signo=SIGSEGV(11), reason=SEGV_MAPERR, si_addr=0x10, randomSeed=1432932617
- pid=19472
-
Crash log dumped to /var/tmp/passenger-crash-log.1432932619
- pid=19472
-
Date, uname and ulimits:
Fri May 29 20:50:19 UTC 2015 Linux 2.6.32-042stab079.5 #1 SMP Fri Aug 2 17:16:15 MSK 2013 x86_64 x86_64 time(seconds) unlimited file(blocks) unlimited data(kbytes) unlimited stack(kbytes) 10240 coredump(blocks) 0 memory(kbytes) unlimited locked memory(kbytes) 64 process 1546159 nofiles 8192 vmemory(kbytes) unlimited locks unlimited
- pid=19472
-
Phusion Passenger version: 5.0.8