After installing package net-ftp/proftpd-1.3.4_rc2, I'm no longer able to login over SFTP. The user accounts are kept in the MySQL table 'proftpd'. The SFTP trace log (sftp.log) is attached. The proftpd compile settings are below: Version: 1.3.4rc2 (devel) Platform: LINUX [Linux 2.6.38-gentoo-r1-mrbyte x86_64] Built: Tue Apr 12 2011 15:27:12 CEST Built With: configure '--prefix=/usr' '--build=x86_64-pc-linux-gnu' '--host=x86_64-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--libdir=/usr/lib64' '--localstatedir=/var/run/proftpd' '--sysconfdir=/etc/proftpd' '--enable-facl' '--disable-auth-file' '--enable-cap' '--disable-ident' '--disable-ipv6' '--disable-memcache' '--enable-ncurses' '--enable-nls' '--disable-auth-pam' '--enable-pcre' '--enable-trace' '--enable-shadow' '--enable-autoshadow' '--enable-openssl' '--with-modules=mod_facl:mod_clamav:mod_sql:mod_sql_passwd:mod_sql_mysql:mod_sftp:mod_sftp_sql:mod_quotatab:mod_quotatab_file:mod_quotatab_sql' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu' 'CFLAGS=-march=opteron -O2 -pipe' 'LDFLAGS=-Wl,-O1 -Wl,--as-needed' 'LIBS=' CFLAGS: -march=opteron -O2 -pipe -Wall LDFLAGS: -L$(top_srcdir)/lib -Wl,-O1 -Wl,--as-needed -L/usr/lib64/mysql -L/usr//lib -L/usr/lib/ LIBS: -lacl -lpcreposix -lpcre -lssl -lcrypto -lssl -lcrypto -lcap -lm -lmysqlclient -lcrypto -lsupp -lcrypt -ldl -ldl -lz Files: Configuration File: /etc/proftpd/proftpd.conf Pid File: /var/run/proftpd/proftpd.pid Scoreboard File: /var/run/proftpd/proftpd.scoreboard Features: + Autoshadow support - Controls support + curses support - Developer support - DSO support - IPv6 support + Largefile support - Lastlog support - Memcache support + ncursesw support + NLS support + OpenSSL support + PCRE support + POSIX ACL support + Shadow file support + Sendfile support + Trace support Tunable Options: PR_TUNABLE_BUFFER_SIZE = 1024 PR_TUNABLE_DEFAULT_RCVBUFSZ = 8192 PR_TUNABLE_DEFAULT_SNDBUFSZ = 8192 PR_TUNABLE_GLOBBING_MAX_MATCHES = 100000 PR_TUNABLE_GLOBBING_MAX_RECURSION = 8 PR_TUNABLE_HASH_TABLE_SIZE = 40 PR_TUNABLE_NEW_POOL_SIZE = 512 PR_TUNABLE_SCOREBOARD_BUFFER_SIZE = 80 PR_TUNABLE_SCOREBOARD_SCRUB_TIMER = 30 PR_TUNABLE_SELECT_TIMEOUT = 30 PR_TUNABLE_TIMEOUTIDENT = 10 PR_TUNABLE_TIMEOUTIDLE = 600 PR_TUNABLE_TIMEOUTLINGER = 30 PR_TUNABLE_TIMEOUTLOGIN = 300 PR_TUNABLE_TIMEOUTNOXFER = 300 PR_TUNABLE_TIMEOUTSTALLED = 3600 PR_TUNABLE_XFER_SCOREBOARD_UPDATES = 10 Please note that it works OK with 1.3.4rc1, so I see no reason to provide proftpd.conf. Reproducible: Always Steps to Reproduce: 1. Build package 2. Start proftpd 3. connect to proftpd over sftp and attempt to login as any valid user Actual Results: Straight followed SFTP authentication Proftpd crashes with SIGSEGV (11). Expected Results: The user should have been successfully logged in.
Created attachment 269673 [details] sftp trace log
Additionally, when compiled as Developer Support enabled (EXTRA_ECONF="--enable-devel=stacktrace" CFLAGS="-g -O0" FEATURES="nostrip noclean" emerge -a proftpd), the stacktrace is returned: BEANRWEB03:/var/tmp/portage/net-ftp/proftpd-1.3.4_rc2/work/proftpd-1.3.4rc2#./proftpd -n 192.168.99.20 - ProFTPD 1.3.4rc2 (devel) (built Tue Apr 12 2011 20:16:13 CEST) standalone mode STARTUP 192.168.99.20 (91.188.52.74[91.188.52.74]) - FTP session opened. 192.168.99.20 (91.188.52.74[91.188.52.74]) - ProFTPD terminating (signal 11) 192.168.99.20 (91.188.52.74[91.188.52.74]) - FTP session closed. 192.168.99.20 (91.188.52.74[91.188.52.74]) - -----BEGIN STACK TRACE----- 192.168.99.20 (91.188.52.74[91.188.52.74]) - [0] /lib64/libc.so.6(__strcasecmp+0x25) [0x7fa66c743025] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [1] /lib64/libc.so.6(__strcasecmp+0x25) [0x7fa66c743025] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [2] ./proftpd() [0x4a8276] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [3] ./proftpd() [0x4acbe5] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [4] ./proftpd() [0x4b5eba] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [5] ./proftpd() [0x439c6e] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [6] ./proftpd() [0x43dab1] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [7] ./proftpd() [0x43dd9c] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [8] ./proftpd() [0x47675a] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [9] ./proftpd() [0x47953c] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [10] ./proftpd() [0x439c6e] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [11] ./proftpd() [0x40a288] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [12] ./proftpd() [0x40abbc] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [13] ./proftpd() [0x40af2a] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [14] ./proftpd() [0x40b532] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [15] ./proftpd() [0x40c6f6] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [16] ./proftpd() [0x40ce2c] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [17] ./proftpd() [0x40e907] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [18] ./proftpd() [0x40f606] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [19] /lib64/libc.so.6(__libc_start_main+0xe6) [0x7fa66c6d8ba6] 192.168.99.20 (91.188.52.74[91.188.52.74]) - [20] ./proftpd() [0x409709] 192.168.99.20 (91.188.52.74[91.188.52.74]) - -----END STACK TRACE----- ^C192.168.99.20 - ProFTPD terminating (signal 2) 192.168.99.20 - ProFTPD 1.3.4rc2 standalone mode SHUTDOWN --- Decrypting stacktrace shows: BEANRWEB03:#addr2line -e ./proftpd 0x4a8276 /modules/mod_sql_mysql.c:965 BEANRWEB03:#addr2line -e ./proftpd 0x4acbe5 /modules/mod_sql.c:508 BEANRWEB03:#addr2line -e ./proftpd 0x4b5eba /modules/mod_sql.c:4048 BEANRWEB03:#addr2line -e ./proftpd 0x439c6e /src/modules.c:59 BEANRWEB03:#addr2line -e ./proftpd 0x43dab1 /src/auth.c:281 BEANRWEB03:#addr2line -e ./proftpd 0x43dd9c /src/auth.c:368 BEANRWEB03:#addr2line -e ./proftpd 0x4e3453 /contrib/mod_sftp/auth.c:81 BEANRWEB03:#addr2line -e ./proftpd 0x4e42f5 /contrib/mod_sftp/auth.c:462 BEANRWEB03:#addr2line -e ./proftpd 0x4e5f0c /contrib/mod_sftp/auth.c:1119 BEANRWEB03:#addr2line -e ./proftpd 0x4e640f /contrib/mod_sftp/auth.c:1263 BEANRWEB03:#addr2line -e ./proftpd 0x4d0519 /contrib/mod_sftp/packet.c:1471 BEANRWEB03:#addr2line -e ./proftpd 0x4c671b /contrib/mod_sftp/mod_sftp.c:246 BEANRWEB03:#addr2line -e ./proftpd 0x40c6f6 /src/main.c:1409 BEANRWEB03:#addr2line -e ./proftpd 0x40ce2c /src/main.c:1621 BEANRWEB03:#addr2line -e ./proftpd 0x40e907 /src/main.c:2536 BEANRWEB03:#addr2line -e ./proftpd 0x40f606 /src/main.c:3188 BEANRWEB03:#addr2line -e ./proftpd 0x409709 --- Interestingly, the stack trace could only be obtained when using emerge with the following flags: ``CFLAGS="-g -O0" FEATURES="nostrip noclean"'' and when pointing addr2line directly at the executable in the source tree in /var/tmp/portage/net-ftp/proftpd-1.3.4_rc2/work/proftpd-1.3.4rc2. addr2line provides no information when pointing out at the installed binary: /usr/sbin/proftpd, for some reason.
Created attachment 269731 [details, diff] sql-groupsetfast-null-pointer.patch The sql-groupsetfast-null-pointer patch resolves the issue. It should be placed into the /files sub-directory of the proftpd ebuild and the proftpd-1.3.4_rc2.ebuild should be patched accordingly to make use of it: --- /usr/portage/net-ftp/proftpd/proftpd-1.3.4_rc2.ebuild 2011-04-04 22:56:08.000000000 +0200 +++ ./proftpd-1.3.4_rc2.ebuild 2011-04-13 00:16:36.000000000 +0200 @@ -62,2 +62,3 @@ use case && __prepare_module mod_case + epatch "${FILESDIR}"/sql-groupsetfast-null-pointer.patch if use clamav ; then
The issue has been resolved, see the attached patch: sql-groupsetfast-null-pointer.patch
Thanks for the report! (and analysis, and patch). Remember to leave the bug open until we really fix it in portage tree though ;) I saw that the patch was committed upstream too, so rc3 will be ok. In the meantime, I've added the patch to 1.3.4_rc2-r1 in CVS
