| Bug #15772 | Aborted YaSSL connections force threads into busyloops | ||
|---|---|---|---|
| Submitted: | 15 Dec 2005 12:59 | Modified: | 21 Dec 2005 10:38 |
| Reporter: | Domas Mituzas | ||
| Status: | Closed | ||
| Category: | Server | Severity: | S1 (Critical) |
| Version: | 5.0.15, 5.0.16 | OS: | Linux (Linux, Solaris 8) |
| Assigned to: | Magnus Blaudd | Target Version: | |
[16 Dec 2005 20:08]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/204
[19 Dec 2005 17:52]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/267
[20 Dec 2005 0:48]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/271
[20 Dec 2005 12:03]
Magnus Blaudd
Pushed to 5.0.18
[21 Dec 2005 10:38]
Jon Stephens
Thank you for your bug report. This issue has been committed to our
source repository of that product and will be incorporated into the
next release.
If necessary, you can access the source repository and build the latest
available version, including the bugfix, yourself. More information
about accessing the source trees is available at
http://www.mysql.com/doc/en/Installing_source_tree.html
Additional info:
Documented in 5.0.18 changelog. Closed.
Description: If SSL connection going to a server is aborted, server endlessly tries to read from a closed socket, and a stale thread is reported in processlist: strace: [pid 11844] ioctl(25, FIONREAD, [0]) = 0 [pid 11844] recv(25, "", 1, MSG_PEEK) = 0 [pid 11844] ioctl(25, FIONREAD, [0]) = 0 [pid 11844] recv(25, "", 1, MSG_PEEK) = 0 [pid 11844] ioctl(25, FIONREAD, [0]) = 0 [pid 11844] recv(25, "", 1, MSG_PEEK) = 0 [pid 11844] ioctl(25, FIONREAD, [0]) = 0 [pid 11844] recv(25, "", 1, MSG_PEEK) = 0 mysql> show processlist; +----+----------------------+-----------------+------+---------+------+-------+----------- -------+ | Id | User | Host | db | Command | Time | State | Info | +----+----------------------+-----------------+------+---------+------+-------+----------- -------+ | 34 | unauthenticated user | localhost:59576 | NULL | Connect | NULL | login | NULL | | 54 | unauthenticated user | localhost:59596 | NULL | Connect | NULL | login | NULL | | 56 | root | localhost:59599 | NULL | Query | 0 | NULL | show processlist | +----+----------------------+-----------------+------+---------+------+-------+----------- -------+ 3 rows in set (0.00 sec) PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 11766 tests 16 0 116m 15m 3840 S 99.9 3.1 3:08.96 mysqld #lsof: ... mysqld 11766 tests 25u IPv4 3255053 TCP localhost:3433->localhost:59576 (CLOSE_WAIT) ... How to repeat: Compile MySQL --with-yassl, then abort connections of ssl-enabled client: -- shell script while true do /home/tests/mysql-5.0.16-sslbug/bin/mysql --defaults-file=/home/tests/mysql-5.0.16-sslbug/ssl/my.cnf -h 127.0.0.1 -P 3433 -e "select 1" done Run shell script and abort it several times in order to reproduce behavior. Suggested fix: Check SSL handshake routines