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authorteor <teor@torproject.org>2019-08-12 09:50:42 +1000
committerteor <teor@torproject.org>2019-08-12 09:50:42 +1000
commite5be039494745a3b0d101e422aa5793aaeac3567 (patch)
treef54b75ac063def4249d6a1db634e9e1af50ee96c
parentf65f4b5c38bc79e2b3f1a10c21cedce9376ad87e (diff)
parent37aae23945c45c459091b38699130a14466d33ef (diff)
downloadtor-e5be039494745a3b0d101e422aa5793aaeac3567.tar.gz
tor-e5be039494745a3b0d101e422aa5793aaeac3567.zip
Merge remote-tracking branch 'tor-github/pr/1034' into maint-0.3.5
-rw-r--r--changes/ticket296174
-rw-r--r--src/feature/relay/dns.c3
2 files changed, 6 insertions, 1 deletions
diff --git a/changes/ticket29617 b/changes/ticket29617
new file mode 100644
index 0000000000..4d50ea9627
--- /dev/null
+++ b/changes/ticket29617
@@ -0,0 +1,4 @@
+ o Minor bugfixes (out-of-memory handler):
+ - When purging the DNS cache because of an out-of-memory condition,
+ try purging just the older entries at first. Previously, we would
+ purge the whole thing. Fixes bug 29617; bugfix on 0.3.5.1-alpha.
diff --git a/src/feature/relay/dns.c b/src/feature/relay/dns.c
index d3660c47ef..cc9f4cf490 100644
--- a/src/feature/relay/dns.c
+++ b/src/feature/relay/dns.c
@@ -2130,7 +2130,8 @@ dns_cache_handle_oom(time_t now, size_t min_remove_bytes)
current_size -= bytes_removed;
total_bytes_removed += bytes_removed;
- time_inc += 3600; /* Increase time_inc by 1 hour. */
+ /* Increase time_inc by a reasonable fraction. */
+ time_inc += (MAX_DNS_TTL_AT_EXIT / 4);
} while (total_bytes_removed < min_remove_bytes);
return total_bytes_removed;