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*** glibc detected *** nginx:

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*** glibc detected *** nginx:

Andrii Balytskyi
I'm getting the following dump sporadically while using nginx for
smtp/tls.
I saw a patch Igor posted in 2007 to what looked like a similar error.
Anyone here run into this issue ?


*** glibc detected *** nginx: worker process: free(): invalid pointer:
0x080ee084 ***
======= Backtrace: =========
/lib/tls/i686/nosegneg/libc.so.6[0xb7c72495]
/lib/tls/i686/nosegneg/libc.so.6(cfree+0x90)[0xb7c75f70]
nginx: worker process[0x805901f]
nginx: worker process[0x805984e]
nginx: worker process[0x80963ac]
nginx: worker process[0x809262a]
nginx: worker process[0x8092939]
nginx: worker process[0x805e23d]
nginx: worker process[0x805d726]
nginx: worker process[0x805d5b4]
nginx: worker process[0x8062aa5]
nginx: worker process[0x8061581]
nginx: worker process[0x80631ae]
nginx: worker process[0x804c784]
/lib/tls/i686/nosegneg/libc.so.6(__libc_start_main+0xe0)[0xb7c1c450]
nginx: worker process[0x804b501]
======= Memory map: ========
08048000-080a3000 r-xp 00000000 08:01 155795
/usr/local/nginx/sbin/nginx
080a3000-080ab000 rw-p 0005b000 08:01 155795
/usr/local/nginx/sbin/nginx
080ab000-08185000 rw-p 080ab000 00:00 0          [heap]
b7a00000-b7a21000 rw-p b7a00000 00:00 0
b7a21000-b7b00000 ---p b7a21000 00:00 0
b7bbb000-b7bc5000 r-xp 00000000 08:01 188614     /lib/libgcc_s.so.1
b7bc5000-b7bc6000 rw-p 0000a000 08:01 188614     /lib/libgcc_s.so.1
b7bca000-b7bd3000 r-xp 00000000 08:01 189055
/lib/tls/i686/nosegneg/libnss_files-2.7.so
b7bd3000-b7bd5000 rw-p 00008000 08:01 189055
/lib/tls/i686/nosegneg/libnss_files-2.7.so
b7bd5000-b7bdd000 r-xp 00000000 08:01 189057
/lib/tls/i686/nosegneg/libnss_nis-2.7.so
b7bdd000-b7bdf000 rw-p 00007000 08:01 189057
/lib/tls/i686/nosegneg/libnss_nis-2.7.so
b7bdf000-b7bf3000 r-xp 00000000 08:01 189052
/lib/tls/i686/nosegneg/libnsl-2.7.so
b7bf3000-b7bf5000 rw-p 00013000 08:01 189052
/lib/tls/i686/nosegneg/libnsl-2.7.so
b7bf5000-b7bf7000 rw-p b7bf5000 00:00 0
b7bf7000-b7bfe000 r-xp 00000000 08:01 189053
/lib/tls/i686/nosegneg/libnss_compat-2.7.so
b7bfe000-b7c00000 rw-p 00006000 08:01 189053
/lib/tls/i686/nosegneg/libnss_compat-2.7.so
b7c00000-b7c02000 rw-p b7c00000 00:00 0
b7c02000-b7c04000 r-xp 00000000 08:01 189049
/lib/tls/i686/nosegneg/libdl-2.7.so
b7c04000-b7c06000 rw-p 00001000 08:01 189049
/lib/tls/i686/nosegneg/libdl-2.7.so
b7c06000-b7d52000 r-xp 00000000 08:01 189046
/lib/tls/i686/nosegneg/libc-2.7.so
b7d52000-b7d53000 r--p 0014c000 08:01 189046
/lib/tls/i686/nosegneg/libc-2.7.so
b7d53000-b7d55000 rw-p 0014d000 08:01 189046
/lib/tls/i686/nosegneg/libc-2.7.so
b7d55000-b7d58000 rw-p b7d55000 00:00 0
b7d58000-b7d6c000 r-xp 00000000 08:01 68110
/usr/lib/libz.so.1.2.3.3
b7d6c000-b7d6d000 rw-p 00013000 08:01 68110
/usr/lib/libz.so.1.2.3.3
b7d6d000-b7e97000 r-xp 00000000 08:01 68635
/usr/lib/i686/cmov/libcrypto.so.0.9.8
b7e97000-b7eac000 rw-p 00129000 08:01 68635
/usr/lib/i686/cmov/libcrypto.so.0.9.8
b7eac000-b7eaf000 rw-p b7eac000 00:00 0
b7eaf000-b7eed000 r-xp 00000000 08:01 68636
/usr/lib/i686/cmov/libssl.so.0.9.8
b7eed000-b7ef1000 rw-p 0003d000 08:01 68636
/usr/lib/i686/cmov/libssl.so.0.9.8
b7ef1000-b7ef2000 rw-p b7ef1000 00:00 0
b7ef2000-b7f18000 r-xp 00000000 08:01 68610
/usr/lib/libpcre.so.3.12.1
b7f18000-b7f19000 rw-p 00026000 08:01 68610
/usr/lib/libpcre.so.3.12.1
b7f19000-b7f22000 r-xp 00000000 08:01 189048
/lib/tls/i686/nosegneg/libcrypt-2.7.so
b7f22000-b7f24000 rw-p 00008000 08:01 189048
/lib/tls/i686/nosegneg/libcrypt-2.7.so
b7f24000-b7f4b000 rw-p b7f24000 00:00 0
b7f4e000-b7f4f000 rw-s 00000000 00:07 2387700    /dev/zero (deleted)
b7f4f000-b7f51000 rw-p b7f4f000 00:00 0
b7f51000-b7f6b000 r-xp 00000000 08:01 188592     /lib/ld-2.7.so
b7f6b000-b7f6d000 rw-p 00019000 08:01 188592     /lib/ld-2.7.so
bf952000-bf968000 rw-p bf952000 00:00 0          [stack]
bfffe000-bffff000 r-xp bfffe000 00:00 0
2009/03/13 16:19:09 [alert] 2893#0: worker process 8536 exited on signal
6
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Re: *** glibc detected *** nginx:

Andrii Balytskyi

nginx version: nginx/0.6.35
--with-mail --with-mail_ssl_module --with-http_ssl_module
--without-http_geo_module --without-http_fastcgi_module
--without-http_memcached_module

Thanks
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Re: *** glibc detected *** nginx:

Andrii Balytskyi
Think I found a fix while reading through the change log of the dev
version

Changes with nginx 0.7.33                                        02 Feb
2009

    *) Bugfix: a segmentation fault might occur in worker process if
       "resolver" directive was used in SMTP proxy.

I remove the resolver directive since it was not needed and that fixed
it.



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