nagios 1.1 SegFaults

[Stanley Hopcroft]

Dear Sir,

I am writing to thank you for your letter and say,

On Thu, Jun 19, 2003 at 04:13:02PM +0200, Lombardo Federico wrote:
> My segfault does not generate a core.

It probably would if you ran it in your build directory (./nagios -h or
-m should do it).

> Btw I've recompiled all without embeeded-perl support and now It never
> segfault.
>

Please would you post the output of perl -V and the version of Debian
you are using ? This should establish whether this is a new problem or
not.
 
> What to think ?
>

It is almost certainly the problem with threaded Perls (> 5.6.1 on Linux
and Solaris) and embedding the Perl interpreter.

The good news is that this is a known problem that is being fixed, if
not has been fixed already.

Yours sincerely.

(Thanks for the strace; it's not very interesting is it. I think if you
ran it under gdb

gdb nagios
set args -h
.. SEGV ..
and then bt
you'd see the SEGV in perl_call_argv()

)
 
> 
> On Thursday 19 June 2003 12:59, Lombardo Federico wrote:
> > I've correctly compiled and installed my Nagios 1.1 under my debian
> running
> > kernel 2.4.21, when I start with -v option, or without any option it i
> > receive a segfault!
> > Starting normal mode, -d /etc/nagios.cfg will work.
> >
> > Best Regards,
> >
> > Federico
> >
> > Here the strace process:
> >
> > execve("./nagios", ["./nagios"], [/* 15 vars */]) = 0
> >
> > uname({sys="Linux", node="tbox", ...}) = 0
> >
> > brk(0) = 0x8090ed0
> >
> > open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or
> > directory)
> >
> > open("/etc/ld.so.cache", O_RDONLY) = 3
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=43905, ...}) = 0
> >
> > old_mmap(NULL, 43905, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40012000
> >
> > close(3) = 0
> >
> > open("/usr/lib/libmysqlclient.so.10", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\210\200"...,
> 1024)
> > = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=214344, ...}) = 0
> >
> > old_mmap(NULL, 213792, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0x4001d000
> >
> > mprotect(0x40039000, 99104, PROT_NONE) = 0
> >
> > old_mmap(0x40039000, 102400, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
> > 3, 0x1c000) = 0x40039000
> >
> > close(3) = 0
> >
> > open("/usr/lib/libperl.so.5.8", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\370\366"...,
> 1024)
> > = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=1044008, ...}) = 0
> >
> > old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > 0) = 0x40052000
> >
> > old_mmap(NULL, 1051328, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> > 0x40053000
> >
> > mprotect(0x40148000, 47808, PROT_NONE) = 0
> >
> > old_mmap(0x40148000, 40960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
> 3,
> > 0xf5000) = 0x40148000
> >
> > old_mmap(0x40152000, 6848, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40152000
> >
> > close(3) = 0
> >
> > open("/lib/libdl.so.2", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0S\27\0\000"...,
> > 1024) = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=7992, ...}) = 0
> >
> > old_mmap(NULL, 10924, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40154000
> >
> > mprotect(0x40156000, 2732, PROT_NONE) = 0
> >
> > old_mmap(0x40156000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
> > 0x1000) = 0x40156000
> >
> > close(3) = 0
> >
> > open("/lib/libm.so.6", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\2605\0"..., 1024)
> > = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=131156, ...}) = 0
> >
> > old_mmap(NULL, 133712, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0x40157000
> >
> > mprotect(0x40177000, 2640, PROT_NONE) = 0
> >
> > old_mmap(0x40177000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
> > 0x1f000) = 0x40177000
> >
> > close(3) = 0
> >
> > open("/lib/libpthread.so.0", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\224D\0"..., 1024)
> > = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=81959, ...}) = 0
> >
> > old_mmap(NULL, 323104, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0x40178000
> >
> > mprotect(0x40184000, 273952, PROT_NONE) = 0
> >
> > old_mmap(0x40184000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
> 3,
> > 0xc000) = 0x40184000
> >
> > old_mmap(0x40187000, 261664, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40187000
> >
> > close(3) = 0
> >
> > open("/lib/libc.so.6", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\275Z\1"..., 1024)
> > = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0755, st_size=1103880, ...}) = 0
> >
> > old_mmap(NULL, 1113636, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> > 0x401c7000
> >
> > mprotect(0x402cf000, 32292, PROT_NONE) = 0
> >
> > old_mmap(0x402cf000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
> 3,
> > 0x107000) = 0x402cf000
> >
> > old_mmap(0x402d5000, 7716, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x402d5000
> >
> > close(3) = 0
> >
> > open("/lib/libcrypt.so.1", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p\t\0\000"...,
> > 1024) = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=18120, ...}) = 0
> >
> > old_mmap(NULL, 180928, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0x402d7000
> >
> > mprotect(0x402dc000, 160448, PROT_NONE) = 0
> >
> > old_mmap(0x402dc000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
> > 0x4000) = 0x402dc000
> >
> > old_mmap(0x402dd000, 156352, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x402dd000
> >
> > close(3) = 0
> >
> > open("/lib/libz.so.1", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0D\30\0\000"...,
> > 1024) = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=51352, ...}) = 0
> >
> > old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > 0) = 0x40304000
> >
> > old_mmap(NULL, 50316, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40305000
> >
> > mprotect(0x40310000, 5260, PROT_NONE) = 0
> >
> > old_mmap(0x40310000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
> > 0xb000) = 0x40310000
> >
> > close(3) = 0
> >
> > open("/lib/libnsl.so.1", O_RDONLY) = 3
> >
> > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0d;\0\000"...,
> 1024)
> > = 1024
> >
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=69132, ...}) = 0
> >
> > old_mmap(NULL, 76448, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40312000
> >
> > mprotect(0x40322000, 10912, PROT_NONE) = 0
> >
> > old_mmap(0x40322000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
> > 0x10000) = 0x40322000
> >
> > old_mmap(0x40323000, 6816, PROT_READ|PROT_WRITE,
> > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40323000
> >
> > close(3) = 0
> >
> > munmap(0x40012000, 43905) = 0
> >
> > getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
> >
> > setrlimit(RLIMIT_STACK, {rlim_cur=2044*1024, rlim_max=RLIM_INFINITY}) = 0
> >
> > getpid() = 10179
> >
> > rt_sigaction(SIGRTMIN, {0x4017fc2a, [], SA_RESTORER, 0x401ed9c8}, NULL, 8)
> > = 0
> >
> > rt_sigaction(SIGRT_1, {0x4017fc62, [], SA_RESTORER, 0x401ed9c8}, NULL, 8)
> =
> > 0
> >
> > rt_sigaction(SIGRT_2, {0x4017fd15, [], SA_RESTORER, 0x401ed9c8}, NULL, 8)
> =
> > 0
> >
> > rt_sigprocmask(SIG_BLOCK, [RTMIN], NULL, 8) = 0
> >
> > _sysctl({{CTL_KERN, KERN_VERSION}, 2, 0xbffff9dc, 32, (nil), 0}) = 0
> >
> > --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> >
> > +++ killed by SIGSEGV +++
> >
> >
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> >
> > ::: Please include Nagios version, plugin version (-v) and OS when
> > ::: reporting any issue. Messages without supporting info will risk being
> > ::: sent to /dev/null
> 
> -- 
> Roy Sigurd Karlsbakk, Datavaktmester
> ProntoTV AS - http://www.pronto.tv/
> Tel: +47 9801 3356
> 
> Computers are like air conditioners.
> They stop working when you open Windows.
> 
> 
> 
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-- 
------------------------------------------------------------------------
Stanley Hopcroft
------------------------------------------------------------------------

'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'

from Meditation 17, J Donne.


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