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authorNick Mathewson <nickm@torproject.org>2017-12-21 12:40:32 -0500
committerNick Mathewson <nickm@torproject.org>2017-12-21 12:40:32 -0500
commitafacaa02a54dcdf0751529dbd8420b3e09009550 (patch)
treee0a5eab5a44f3c1c09e71e85be12de0c4ed90376
parent9be4b91760d5a5b5a15abe69d0015c3016c79355 (diff)
downloadtor-afacaa02a54dcdf0751529dbd8420b3e09009550.tar.gz
tor-afacaa02a54dcdf0751529dbd8420b3e09009550.zip
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Changes in version 0.3.2.8-rc - 2017-12-21
- Tor 0.3.2.8-rc fixes a pair of bugs in the KIST and KISTLite schedulers
- that had led servers under heavy load to overload their outgoing
- connections. All relay operators running earlier 0.3.2.x versions should
- upgrade. This version also includes a mitigation for over-full DESTROY
- queues leading to out-of-memory conditions: if it works, we will soon
- backport it to earlier release series.
-
- This is the second release candidate in the 0.3.2 series. If we find no
- new bugs or regression here, then the first stable 0.3.2 release will
- be nearly identical to this.
+ Tor 0.3.2.8-rc fixes a pair of bugs in the KIST and KISTLite
+ schedulers that had led servers under heavy load to overload their
+ outgoing connections. All relay operators running earlier 0.3.2.x
+ versions should upgrade. This version also includes a mitigation for
+ over-full DESTROY queues leading to out-of-memory conditions: if it
+ works, we will soon backport it to earlier release series.
- o Major bugfixes (KIST, scheduler):
- - The KIST scheduler did not correctly account for data already enqueued
- in each connection's send socket buffer, particularly in cases when the
- TCP/IP congestion window was reduced between scheduler calls. This
- situation lead to excessive per-connection buffering in the kernel, and
- a potential memory DoS. Fixes bug 24665; bugfix on 0.3.2.1-alpha.
+ This is the second release candidate in the 0.3.2 series. If we find
+ no new bugs or regression here, then the first stable 0.3.2 release
+ will be nearly identical to this.
- o Minor bugfixes (scheduler, KIST):
- - Use a sane write limit for KISTLite when writing onto a connection
- buffer instead of using INT_MAX and shoving as much as it can. Because
- the OOM handler cleans up circuit queues, we are better off at keeping
- them in that queue instead of the connection's buffer. Fixes bug 24671;
- bugfix on 0.3.2.1-alpha.
+ o Major bugfixes (KIST, scheduler):
+ - The KIST scheduler did not correctly account for data already
+ enqueued in each connection's send socket buffer, particularly in
+ cases when the TCP/IP congestion window was reduced between
+ scheduler calls. This situation lead to excessive per-connection
+ buffering in the kernel, and a potential memory DoS. Fixes bug
+ 24665; bugfix on 0.3.2.1-alpha.
o Minor features (geoip):
- Update geoip and geoip6 to the December 6 2017 Maxmind GeoLite2
Country database.
o Minor bugfixes (hidden service v3):
- - Bump hsdir_spread_store parameter from 3 to 4 in order to increase the
- probability of reaching a service for a client missing microdescriptors.
- Fixes bug 24425; bugfix on 0.3.2.1-alpha.
+ - Bump hsdir_spread_store parameter from 3 to 4 in order to increase
+ the probability of reaching a service for a client missing
+ microdescriptors. Fixes bug 24425; bugfix on 0.3.2.1-alpha.
o Minor bugfixes (memory usage):
- - When queuing DESTROY cells on a channel, only queue the
- circuit-id and reason fields: not the entire 514-byte
- cell. This fix should help mitigate any bugs or attacks that
- fill up these queues, and free more RAM for other uses. Fixes
- bug 24666; bugfix on 0.2.5.1-alpha.
+ - When queuing DESTROY cells on a channel, only queue the circuit-id
+ and reason fields: not the entire 514-byte cell. This fix should
+ help mitigate any bugs or attacks that fill up these queues, and
+ free more RAM for other uses. Fixes bug 24666; bugfix
+ on 0.2.5.1-alpha.
+ o Minor bugfixes (scheduler, KIST):
+ - Use a sane write limit for KISTLite when writing onto a connection
+ buffer instead of using INT_MAX and shoving as much as it can.
+ Because the OOM handler cleans up circuit queues, we are better
+ off at keeping them in that queue instead of the connection's
+ buffer. Fixes bug 24671; bugfix on 0.3.2.1-alpha.
Changes in version 0.3.2.7-rc - 2017-12-14