Bug #4075: Segmentation violation in init code.

From: comitale@ca.ibm.com Operating system: Redhat Linux 6.1 PHP version: 3.0.16 PHP Bug Type: Reproduceable crash Bug description: Segmentation violation in init code. My apologies, this is a dupliate of bug report #3861, but I see no mechanism to add more information to an existing bug report. I have a LOT of new information to provide regarding this problem, including how to duplicate it easily. First, my configuration. I am running Redhat Linux 6.1, with IBM DB2 UDB for Linux version 6.1 with the appropriate Redhat specific patches (to the dbm, not Linux). I have the standard installation with the SDK installed. You can obtain a 60 day free evaluation version of DB2 for Linux if you want to reproduct this error, from IBM's DB2 site: http://www-4.ibm.com/software/data/db2/linux/ I downloaded and compiled fresh copies of Apache 1.3.12 and PHP 3.0.16. Here are my "./configure" lines: Apache: CC="egcs" OPTIM="-O2 -mpentiumpro" \ ./configure --prefix=/opt/apache \ --enable-module=so \ --server-uid=505 \ --server-gid=505 PHP: CC="egcs" OPTIM="-O2 -mpentiumpro" \ ./configure --prefix=/opt/php3 \ --with-apxs=/opt/apache/bin/apxs \ --with-ibm-db2=/opt/IBMdb2/V6.1 \ --disable-debug My php.ini file is the default one for this version. This problem occurs when you attempt to start the Apache web server process(es) with the php module configured. Here is a stack traceback: (gdb) bt #0 0x40a136a8 in ?? () #1 0x400b93fa in _IO_new_file_close_it (fp=0x80b50f0) at fileops.c:136 #2 0x400b527d in _IO_new_fclose (fp=0x80b50f0) at iofclose.c:50 #3 0x40177952 in php3_init_config () at configuration-parser.y:226 #4 0x4016e35a in php3_config_ini_startup () at main.c:947 #5 0x4016eec0 in php3_module_startup () at main.c:1238 #6 0x4016ca0d in php3_create_dir () from /opt/apache/libexec/libphp3.so #7 0x8063f60 in ap_single_module_configure () #8 0x805ecd1 in load_module () #9 0x8062f54 in invoke_cmd () #10 0x80634f9 in ap_handle_command () #11 0x8063548 in ap_srm_command_loop () #12 0x8063873 in ap_process_resource_config () #13 0x8063edc in ap_read_config () #14 0x806aa87 in standalone_main () #15 0x806b141 in main () #16 0x4007c1eb in __libc_start_main (main=0x806aec4 <main>, argc=1, argv=0xbffffc54, init=0x804ea6c <_init>, fini=0x808d1fc <_fini>, rtld_fini=0x4000a610 <_dl_fini>, stack_end=0xbffffc4c) at ../sysdeps/generic/libc-start.c:90 (gdb) And here is an strace of the problem (this is taken from the apache child process that dies when the segmentation violation happens): setsid() = 20438 close(0) = 0 open("/dev/null", O_RDONLY|O_LARGEFILE) = 0 close(1) = 0 open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 1 getpid() = 20438 time(NULL) = 955139874 close(16) = 0 semget(4294967294, 1, 0) = -1 ENOENT (No such file or directory) rt_sigprocmask(SIG_BLOCK, [ALRM CHLD], [RT_0], 8) = 0 rt_sigprocmask(SIG_SETMASK, [RT_0], NULL, 8) = 0 munmap(0x40157000, 624552) = 0 munmap(0x401f4000, 218372) = 0 munmap(0x4022a000, 8140452) = 0 munmap(0x409ee000, 23084) = 0 munmap(0x409f4000, 31180) = 0 munmap(0x409fc000, 59900) = 0 munmap(0x40a0b000, 69188) = 0 open("/opt/apache/conf/httpd.conf", O_RDONLY) = 4 fstat(4, {st_mode=S_IFREG|0644, st_size=31507, ...}) = 0 fstat(4, {st_mode=S_IFREG|0644, st_size=31507, ...}) = 0 mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40157000 read(4, "##\n## httpd.conf -- Apache HTTP "..., 4096) = 4096 stat("/opt/apache", {st_mode=S_IFDIR|0755, st_size=246, ...}) = 0 read(4, "onf/access.conf\n\n#\n# Timeout: Th"..., 4096) = 4096 open("/opt/apache/libexec/libphp3.so", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0755, st_size=1432839, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260E\1"..., 4096) = 4096 mmap(0, 624552, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x40158000 mprotect(0x401da000, 92072, PROT_NONE) = 0 mmap(0x401da000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x81000) = 0x401da000 mmap(0x401df000, 71592, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x401df000 close(5) = 0 open("/opt/IBMdb2/V6.1/lib/libgd.so.1", O_RDONLY) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0644, st_size=16262, ...}) = 0 mmap(0, 16262, PROT_READ, MAP_PRIVATE, 5, 0) = 0x401f3000 close(5) = 0 open("/usr/lib/libgd.so.1", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0755, st_size=155713, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220\23"..., 4096) = 4096 mmap(0, 218372, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x401f7000 mprotect(0x401fd000, 193796, PROT_NONE) = 0 mmap(0x401fd000, 126976, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x5000) = 0x401fd000 mmap(0x4021c000, 66820, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4021c000 close(5) = 0 open("/opt/IBMdb2/V6.1/lib/libdb2.so.1", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0555, st_size=8361446, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\20v\v\000"..., 4096) = 4096 mmap(0, 8140452, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x4022d000 mprotect(0x40803000, 2021028, PROT_NONE) = 0 mmap(0x40803000, 1540096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x5d5000) = 0x40803000 mmap(0x4097b000, 480932, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4097b000 close(5) = 0 open("/opt/IBMdb2/V6.1/lib/libgdbm.so.2", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/lib/libgdbm.so.2", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0755, st_size=28657, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\22"..., 4096) = 4096 mmap(0, 23084, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x409f1000 mprotect(0x409f6000, 2604, PROT_NONE) = 0 mmap(0x409f6000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x4000) = 0x409f6000 close(5) = 0 open("/opt/IBMdb2/V6.1/lib/libpam.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libpam.so.0", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0755, st_size=32795, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\360\22"..., 4096) = 4096 mmap(0, 31180, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x409f7000 mprotect(0x409fe000, 2508, PROT_NONE) = 0 mmap(0x409fe000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x6000) = 0x409fe000 close(5) = 0 open("/opt/IBMdb2/V6.1/lib/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libresolv.so.2", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0755, st_size=170564, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300\"\0"..., 4096) = 4096 mmap(0, 59900, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x409ff000 mprotect(0x40a0a000, 14844, PROT_NONE) = 0 mmap(0x40a0a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0xa000) = 0x40a0a000 mmap(0x40a0c000, 6652, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40a0c000 close(5) = 0 open("/usr/IBMdb2/V6.1/lib/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("/opt/IBMdb2/V6.1/lib/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libpthread.so.0", O_RDONLY) = 5 fstat(5, {st_mode=S_IFREG|0755, st_size=247381, ...}) = 0 read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\3407\0"..., 4096) = 4096 mmap(0, 69188, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x40a6a000 mprotect(0x40a74000, 28228, PROT_NONE) = 0 mmap(0x40a74000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x9000) = 0x40a74000 close(5) = 0 mprotect(0x4022d000, 6119424, PROT_READ|PROT_WRITE) = 0 mprotect(0x4022d000, 6119424, PROT_READ|PROT_EXEC) = 0 getrlimit(RLIMIT_STACK, {rlim_cur=2040*1024, rlim_max=RLIM_INFINITY}) = 0 getpid() = 20438 uname({sys="Linux", node="wntw167", ...}) = 0 rt_sigaction(SIGRT_0, {0x40a70e10, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {0x40a707ac, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGRT_2, {0x40a70e9c, [], 0x4000000}, NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [RT_0], NULL, 8) = 0 getpid() = 20438 munmap(0x401f3000, 16262) = 0 open("./php3.ini", O_RDONLY) = -1 ENOENT (No such file or directory) open("/opt/apache/conf/php3.ini", O_RDONLY) = 5 ioctl(5, TCGETS, 0xbfffc9b8) = -1 ENOTTY (Inappropriate ioctl for device) read(5, "[PHP_3]\n\n;;;;;;;;;;;;;;;;;;;\n; A"..., 8192) = 6745 read(5, "", 1447) = 0 read(5, "", 8192) = 0 ioctl(5, TCGETS, 0xbfffc9a4) = -1 ENOTTY (Inappropriate ioctl for device) --- SIGSEGV (Segmentation fault) --- If you would like me to get any more information for you to fix this, please let me know.