From: Anil Rajapure (anil_unix1975@yahoo.com)
Date: Tue Oct 22 2002 - 11:37:23 EDT
Some background.
HP-UX 11.11 Superdome m/c
I am running a script that checks the ldap database and reports when certain conditions are met.
I am getting a core dump with following error.
./writescript.sh[26]: 2910 Memory fault(coredump)
Now I ran it with truss to check all calls. The output is as follows.
mmap(NULL, 131244, PROT_READ|PROT_EXEC, MAP_SHARED|MAP_SHLIB, 3, 0x9000) ................ = 0xc0010000
mmap(NULL, 14696, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_SHLIB, 3, 0x2a000) .... = 0x7b050000
mmap(NULL, 8192, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, NULL) ... = 0x7b04e000
mmap(NULL, 1323008, PROT_READ|PROT_EXEC, MAP_SHARED|MAP_SHLIB, 3, 0x6d000) .............. = 0xc0100000
mmap(NULL, 45056, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_SHLIB, -1, NULL) = 0x7b043000
mmap(0x7b03b000, 32768, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_SHLIB, 3, 0x1b0000) = 0x7b03b000
mmap(NULL, 16384, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, NULL) .. = 0x7b037000
mmap(NULL, 12288, PROT_READ|PROT_EXEC, MAP_SHARED|MAP_SHLIB, 3, 0x2000) ................. = 0xc0004000
mmap(NULL, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_SHLIB, 3, 0x5000) ...... = 0x7b036000
mmap(NULL, 1323008, PROT_READ|PROT_EXEC, MAP_SHARED|MAP_SHLIB, 3, 0x6d000) .............. ERR#12 ENOMEM
mmap(NULL, 40, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, NULL) ..... = 0x7b035000
Received signal 18, SIGCLD, in sigvec(), [SIG_DFL], no siginfo
Received signal 18, SIGCLD, in sigvec(), [SIG_DFL], no siginfo
waitpid(-1, 0x7f7f11b4, WUNTRACED) ...................................................... [sleeping]
./writescript.sh[26]: 2910 Memory fault(coredump)
Received signal 18, SIGCLD, in read(), [caught], no siginfo
Received signal 18, SIGCLD, in sigvec(), [SIG_DFL], no siginfo
As can be seen it is failing at mmap call with error No -12.
My kernel values are as follows (All in bytes)
maxdsiz - 1073741824
maxdsiz_64bit - 1073741824
maxssiz - 1073741824
maxssiz_64bit - 1073741824
maxtsiz - 1073741824
maxtsiz_64bit - 1073741824
I am planning to change maxssiz_64bit to 1073741824
Am I hitting the right spot?
Thanks in advance. Will summarize
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