Bug 1436094
| Summary: | Segmentation fault / Invalid read of size 8 in EVP_CIPHER_CTX_cleanup | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Remi Collet <fedora> |
| Component: | libevent | Assignee: | Steve Dickson <steved> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 26 | CC: | steved, tmraz |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libevent-2.0.22-3.fc26 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-04-01 17:32:31 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1423849 | ||
| Bug Blocks: | |||
BTW, just noticed libevent is FTBFS in rawhide... so still use older openssl library... see #1423849 This is most probably a conflict between the old and new openssl being simultaneously used in a single process. In most cases this works fine, but there might be use-cases where it does not. I'll look at patching libevent to use the 1.1.0. Notice: from a quick test
- latest libevent 2.1.8 just build fine in F26 (but introduce a soname bump from 5 to 6)
- the pecl/event test suite passes without any segfault
> This is most probably a conflict between the old and new openssl being simultaneously used in a single process.
Indeed.
php-pecl-event rebuild in rawhide, "full" test suite passes without any segfault. Thanks for the quick fix. libevent-2.0.22-3.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-f1d16808df Of course at least in Rawhide it would be much better if libevent was updated to current upstream version. But I suppose doing soname bump in F26 branch is not a good idea. (In reply to Tomas Mraz from comment #6) > Of course at least in Rawhide it would be much better if libevent was > updated to current upstream version. But I suppose doing soname bump in F26 > branch is not a good idea. +1 libevent-2.0.22-3.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report. |
Working in php-pecl-event extension, which uses libevent and openssl openssl-devel-1.1.0e-1.fc26.x86_64 libevent-devel-2.0.22-1.fc25.x86_64 php-devel-7.1.3-1.fc26.x86_64 $ gdb php (gdb) run -n -d "output_handler=" -d "open_basedir=" -d "disable_functions=" -d "output_buffering=Off" -d "error_reporting=32767" -d "display_errors=1" -d "display_startup_errors=1" -d "log_errors=0" -d "html_errors=0" -d "track_errors=1" -d "report_memleaks=1" -d "report_zend_debug=0" -d "docref_root=" -d "docref_ext=.html" -d "error_prepend_string=" -d "error_append_string=" -d "auto_prepend_file=" -d "auto_append_file=" -d "ignore_repeated_errors=0" -d "precision=14" -d "memory_limit=128M" -d "log_errors_max_len=0" -d "opcache.fast_shutdown=0" -d "opcache.file_update_protection=0" -d "extension=sockets.so" -d "extension=/home/remi/pecl-event/modules/event.so" -d "session.auto_start=0" -d "zlib.output_compression=Off" -f "/home/remi/pecl-event/tests/21-bevent-sslfilter.php" (gdb) bt #0 0x00007fffebfb2d61 in EVP_CIPHER_CTX_cleanup () from /lib64/libcrypto.so.10 #1 0x00007fffec32ca5d in ssl_clear_cipher_ctx () from /lib64/libssl.so.10 #2 0x00007fffec32e23a in SSL_set_accept_state () from /lib64/libssl.so.10 #3 0x00007fffec9a4ea2 in bufferevent_openssl_new_impl (base=0x555555cf6380, underlying=0x555555cd6750, fd=fd@entry=-1, ssl=0x555555ced850, state=BUFFEREVENT_SSL_ACCEPTING, options=<optimized out>) at bufferevent_openssl.c:1337 #4 0x00007fffec9a5b8e in bufferevent_openssl_filter_new (base=<optimized out>, underlying=<optimized out>, ssl=<optimized out>, state=<optimized out>, options=<optimized out>) at bufferevent_openssl.c:1396 #5 0x00007fffecbbe9ce in _create_ssl_filter (execute_data=<optimized out>, return_value=0x7fffffffa210, deprecated=<optimized out>) at /home/remi/pecl-event/php7/classes/buffer_event.c:308 #6 0x0000555555853e80 in ZEND_DO_FCALL_SPEC_RETVAL_UNUSED_HANDLER () at /usr/src/debug/php-7.1.3/Zend/zend_vm_execute.h:970 #7 0x00005555557fb14b in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.3/Zend/zend_vm_execute.h:429 #8 0x0000555555855ec0 in zend_execute (op_array=op_array@entry=0x555555cf5e40, return_value=return_value@entry=0x555555cf6310) at /usr/src/debug/php-7.1.3/Zend/zend_vm_execute.h:474 #9 0x00005555557b1972 in zend_execute_scripts (type=type@entry=8, retval=0x555555cf6310, retval@entry=0x0, file_count=-134995904, file_count@entry=3) at /usr/src/debug/php-7.1.3/Zend/zend.c:1476 #10 0x000055555574e670 in php_execute_script (primary_file=0x7fffffffc830) at /usr/src/debug/php-7.1.3/main/main.c:2537 #11 0x00005555558581f8 in do_cli (argc=60, argv=0x555555bd1db0) at /usr/src/debug/php-7.1.3/sapi/cli/php_cli.c:993 #12 0x0000555555621558 in main (argc=60, argv=0x555555bd1db0) at /usr/src/debug/php-7.1.3/sapi/cli/php_cli.c:1381 Using valgrind (ensuring we are not using PHP allocator) $ export USE_ZEND_ALLOC=0 $ valgrind /usr/bin/php -n -d "output_handler=" -d "open_basedir=" -d "disable_functions=" -d "output_buffering=Off" -d "error_reporting=32767" -d "display_errors=1" -d "display_startup_errors=1" -d "log_errors=0" -d "html_errors=0" -d "track_errors=1" -d "report_memleaks=1" -d "report_zend_debug=0" -d "docref_root=" -d "docref_ext=.html" -d "error_prepend_string=" -d "error_append_string=" -d "auto_prepend_file=" -d "auto_append_file=" -d "ignore_repeated_errors=0" -d "precision=14" -d "memory_limit=128M" -d "log_errors_max_len=0" -d "opcache.fast_shutdown=0" -d "opcache.file_update_protection=0" -d "extension=sockets.so" -d "extension=/home/remi/pecl-event/modules/event.so" -d "session.auto_start=0" -d "zlib.output_compression=Off" -f "/home/remi/pecl-event/tests/21-bevent-sslfilter.php" ==20455== Memcheck, a memory error detector ==20455== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==20455== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info ==20455== Command: /usr/bin/php -n -d output_handler= -d open_basedir= -d disable_functions= -d output_buffering=Off -d error_reporting=32767 -d display_errors=1 -d display_startup_errors=1 -d log_errors=0 -d html_errors=0 -d track_errors=1 -d report_memleaks=1 -d report_zend_debug=0 -d docref_root= -d docref_ext=.html -d error_prepend_string= -d error_append_string= -d auto_prepend_file= -d auto_append_file= -d ignore_repeated_errors=0 -d precision=14 -d memory_limit=128M -d log_errors_max_len=0 -d opcache.fast_shutdown=0 -d opcache.file_update_protection=0 -d extension=sockets.so -d extension=/home/remi/pecl-event/modules/event.so -d session.auto_start=0 -d zlib.output_compression=Off -f /home/remi/pecl-event/tests/21-bevent-sslfilter.php ==20455== ==20455== Invalid read of size 8 ==20455== at 0x10E50D61: EVP_CIPHER_CTX_cleanup (in /usr/lib64/libcrypto.so.1.0.2j) ==20455== by 0x10AFDA5C: ssl_clear_cipher_ctx (in /usr/lib64/libssl.so.1.0.2j) ==20455== by 0x10AFF239: SSL_set_accept_state (in /usr/lib64/libssl.so.1.0.2j) ==20455== by 0x1046BEA1: bufferevent_openssl_new_impl (bufferevent_openssl.c:1337) ==20455== by 0x102539CD: _create_ssl_filter (buffer_event.c:308) ==20455== by 0x407E7F: ZEND_DO_FCALL_SPEC_RETVAL_UNUSED_HANDLER (zend_vm_execute.h:970) ==20455== by 0x3AF14A: execute_ex (zend_vm_execute.h:429) ==20455== by 0x409EBF: zend_execute (zend_vm_execute.h:474) ==20455== by 0x365971: zend_execute_scripts (zend.c:1476) ==20455== by 0x30266F: php_execute_script (main.c:2537) ==20455== by 0x40C1F7: do_cli (php_cli.c:993) ==20455== by 0x1D5557: main (php_cli.c:1381) ==20455== Address 0xffffffff00000000 is not stack'd, malloc'd or (recently) free'd ==20455== I'm not sure where the bug is (php-pecl-event, libevent or openssl), but this only happen with OpenSSL 1.1, everything works as expected with OpenSSL 1.0. Any help welcome on this issue.