I catched a new created apache pid 7963 by observe `watch -n 0 ps axuf`,
and used it instantly by strace -p. That way I was able to catch an
strace output of the segfault, it looks similar to the strace in the
polish thread, I mentioned in the first post of this bugreport:
# strace -p 7963
Process 7963 attached - interrupt to quit
read(14, "", 4096) = 0
time(NULL) = 1194018666
close(14) = 0
rt_sigaction(SIGUSR1, {0x805d550, [], SA_RESTORER|SA_INTERRUPT,
0xb7fb5668}, {0x805d550, [], SA_RESTORER|SA_INTERRUPT, 0xb7fb5668}, 8)
= 0
accept(24, 0xbfffdb3c, [16]) = ? ERESTARTSYS (To be
restarted)
--- SIGUSR1 (User defined signal 1) @ 0 (0) ---
sigreturn() = ? (mask now [])
rt_sigaction(SIGHUP, {SIG_IGN}, {0x805d520, [], SA_RESTORER|
SA_INTERRUPT, 0xb7fb5668}, 8) = 0
rt_sigaction(SIGUSR1, {SIG_IGN}, {0x805d550, [], SA_RESTORER|
SA_INTERRUPT, 0xb7fb5668}, 8) = 0
munmap(0xb507f000, 26144) = 0
munmap(0xb505a000, 67016) = 0
munmap(0xb5027000, 206984) = 0
munmap(0xb50d4000, 14520) = 0
munmap(0xb5073000, 43364) = 0
munmap(0xb50d8000, 39328) = 0
munmap(0xb5086000, 302320) = 0
munmap(0xb513b000, 19652) = 0
munmap(0xb5140000, 61424) = 0
munmap(0xb50e2000, 349180) = 0
munmap(0xb51b2000, 22148) = 0
munmap(0xb514f000, 371720) = 0
munmap(0xb51b8000, 22696) = 0
munmap(0xb51be000, 26500) = 0
munmap(0xb51c5000, 79932) = 0
munmap(0xb51d9000, 60320) = 0
munmap(0xb51e8000, 102048) = 0
munmap(0xb5201000, 48032) = 0
munmap(0xb5290000, 10172) = 0
munmap(0xb520d000, 292496) = 0
munmap(0xb5293000, 34492) = 0
munmap(0xb525d000, 184704) = 0
munmap(0xb52fb000, 38828) = 0
munmap(0xb52be000, 216860) = 0
munmap(0xb52b2000, 46128) = 0
munmap(0xb529c000, 87656) = 0
munmap(0xb53d3000, 93280) = 0
munmap(0xb530d000, 777552) = 0
munmap(0xb5305000, 32656) = 0
munmap(0xb7394000, 105012) = 0
munmap(0xb53ea000, 338392) = 0
munmap(0xb740c000, 1103908) = 0
munmap(0xb73ae000, 199356) = 0
munmap(0xb7210000, 194988) = 0
munmap(0xb71a2000, 448812) = 0
munmap(0xb6b58000, 4734240) = 0
munmap(0xb6425000, 4061756) = 0
munmap(0xb6b4a000, 54144) = 0
munmap(0xb6864000, 1050988) = 0
munmap(0xb7185000, 118380) = 0
munmap(0xb6ac5000, 327512) = 0
munmap(0xb63d8000, 313404) = 0
munmap(0xb63b6000, 137184) = 0
munmap(0xb6317000, 649292) = 0
munmap(0xb62bb000, 343680) = 0
munmap(0xb7165000, 130444) = 0
munmap(0xb5f0d000, 175460) = 0
munmap(0xb70fb000, 433700) = 0
munmap(0xb70d8000, 140716) = 0
munmap(0xb70c8000, 63836) = 0
munmap(0xb6fdc000, 966364) = 0
munmap(0xb6b15000, 215388) = 0
munmap(0xb5ded000, 1150492) = 0
munmap(0xb69e0000, 935588) = 0
munmap(0xb69d5000, 44292) = 0
munmap(0xb69c2000, 76836) = 0
munmap(0xb6971000, 331368) = 0
munmap(0xb696d000, 14568) = 0
munmap(0xb696a000, 10164) = 0
munmap(0xb6965000, 19604) = 0
munmap(0xb6805000, 385804) = 0
munmap(0xb6285000, 219048) = 0
munmap(0xb630f000, 30512) = 0
munmap(0xb6112000, 1519016) = 0
munmap(0xb5f38000, 1940000) = 0
munmap(0xb5f06000, 26584) = 0
munmap(0xb543d000, 10156124) = 0
close(4) = 0
close(12) = 0
close(3) = 0
munmap(0xb2027000, 50331648) = 0
munmap(0xb751a000, 92272) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
chdir("/tmp") = 0
rt_sigaction(SIGSEGV, {SIG_DFL}, {SIG_DFL}, 8) = 0
kill(7963, SIGSEGV) = 0
sigreturn() = ? (mask now [])
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
Process 7963 detached
Could it be, that the processes are stopped by MaxSpareServers in
httpd.conf ?
# egrep '(SpareServers|StartServers)' /etc/apache/httpd.conf |
egrep -v '#'
MinSpareServers 1
MaxSpareServers 4
StartServers 2
These values are due to the terrible resource limit of this vserver...
I hope that I used the debug options the right way.
I may upgrade to apache 2.2, but I'm not sure if the requirements fit my
vserver capabilities.
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