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[2016-08-01 09:02 UTC] spam2 at rhsoft dot net
Description:
------------
last week i ported our upload-progress from the pecl-exetnsion to the session support started with PHP 5.4, all fine on PHP 5.6
after upgrade to 7.0.9 (hardened build with stack-protector, PIE/PIC) the upload-progress itself works fine but at the moment the upload is finished httpd crashs
see "/usr/bin/strace -s 256 -q -y -f -v httpd" bottom output
\3138\207\304=\35\363\362\370\251\221\264\0270\254\2348.\27\322q\274\327\341Q\224\315\276U\302\354\10b\316\4(\0350\264\230<\214\364x9\364G\37\364\207\314\265\341"..., 3976) = 3976
[pid 15402] close(13</Volumes/dune/www-servers/uploadprogress/uploadtemp/phpv4MOhn>) = 0
[pid 15402] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x18} ---
[pid 15402] chdir("/etc/httpd") = 0
[pid 15402] rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER|SA_INTERRUPT, 0x7fd3d7d9ec30}, {SIG_DFL, [], SA_RESTORER|SA_RESETHAND, 0x7fd3d7d9ec30}, 8) = 0
[pid 15402] kill(15402, SIGSEGV) = 0
[pid 15402] rt_sigreturn({mask=[]}) = 24
[pid 15402] --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_USER, si_pid=15402, si_uid=48} ---
[pid 15402] +++ killed by SIGSEGV +++
[pid 15395] <... select resumed> ) = ? ERESTARTNOHAND (To be restarted if no handler)
[pid 15395] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=15402, si_uid=48, si_status=SIGSEGV, si_utime=4, si_stime=31} ---
[pid 15395] select(0, NULL, NULL, NULL, {0, 349972}) = 0 (Timeout)
[pid 15395] wait4(-1, [{WIFSIGNALED(s) && WTERMSIG(s) == SIGSEGV}], WNOHANG|WSTOPPED, NULL) = 15402
[pid 15395] write(2</Volumes/dune/www-servers/_logs/apache_error.log>, "[Mon Aug 01 10:58:23.271421 2016] [core:notice] [pid 15395] AH00052: child pid 15402 exit signal Segmentation fault (11)\n", 121) = 121
[pid 15395] wait4(-1, 0x7ffe54af4184, WNOHANG|WSTOPPED, NULL) = 0
Test script:
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well, it would be fine when this bugtracker would support other attachments than patches, the whole testcase lives in it's own folder including the javascript ajax part
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Program received signal SIGSEGV, Segmentation fault. 0x00007ffff6b631d6 in strlen () from /lib64/libc.so.6 (gdb) bt #0 0x00007ffff6b631d6 in strlen () from /lib64/libc.so.6 #1 0x00007ffff3be2322 in add_assoc_string_ex (arg=0x7fffef265078, key=0x7ffff3f8f22d "tmp_name", key_len=8, str=0x18 <error: Cannot access memory at address 0x18>) at /home/builduser/rpmbuild/BUILD/php-7.0.9/Zend/zend_API.c:1390 #2 0x00007ffff3d84f39 in php_session_rfc1867_callback (event=4, event_data=0x7fffffffc4b0, extra=0x7fffffffc308) at /home/builduser/rpmbuild/BUILD/php-7.0.9/ext/session/session.c:3068 #3 0x00007ffff3bc733b in rfc1867_post_handler (content_type_dup=0x7fffef25c000 "multipart/form-data; boundary=", '-' <repeats 27 times>, "187609725357453047733494121", arg=0x7fffffffdaa0) at /home/builduser/rpmbuild/BUILD/php-7.0.9/main/rfc1867.c:1104 #4 0x00007ffff3ba4eaf in sapi_handle_post (arg=0x7fffffffdaa0) at /home/builduser/rpmbuild/BUILD/php-7.0.9/main/SAPI.c:174 #5 0x00007ffff3bbe501 in php_default_treat_data (arg=0, str=0x0, destArray=0x0) at /home/builduser/rpmbuild/BUILD/php-7.0.9/main/php_variables.c:397 #6 0x00007ffff3bbcadd in php_auto_globals_create_post (name=0x7fffed568f90) at /home/builduser/rpmbuild/BUILD/php-7.0.9/main/php_variables.c:694 #7 0x00007ffff3f149cc in zend_activate_auto_globals () at /home/builduser/rpmbuild/BUILD/php-7.0.9/Zend/zend_compile.c:1567 #8 0x00007ffff3bbcfbd in php_hash_environment () at /home/builduser/rpmbuild/BUILD/php-7.0.9/main/php_variables.c:664 #9 0x00007ffff3c06963 in php_request_startup () at /home/builduser/rpmbuild/BUILD/php-7.0.9/main/main.c:1628 #10 0x00007ffff3b25a86 in php_apache_request_ctor (r=0x7fffef4070a0, ctx=0x7fffef1d1028) at /home/builduser/rpmbuild/BUILD/php-7.0.9/sapi/apache2handler/sapi_apache2.c:513 #11 0x00007ffff3b25ead in php_handler (r=0x7fffef4070a0) at /home/builduser/rpmbuild/BUILD/php-7.0.9/sapi/apache2handler/sapi_apache2.c:629 #12 0x0000555555599eb8 in ap_run_handler () #13 0x000055555559ae87 in ap_invoke_handler () #14 0x00005555555f0a3a in ap_process_async_request () #15 0x00005555555f0d30 in ap_process_request () #16 0x00005555555d9c55 in ?? () #17 0x0000555555584ab8 in ap_run_process_connection () #18 0x00005555555cca3f in ?? () #19 0x00005555555cccdb in ?? () #20 0x00005555555ce281 in ?? () #21 0x00005555555d196e in ap_run_mpm () #22 0x000055555557e2c2 in main () (gdb)