RBTDB node can now appear on the deadnodes lists following the changes
to decrement_reference in 176b23b6cd to
defer checking of node->down when the tree write lock is not held. The
node should be unlinked instead.
NS_CLIENT_TCP_BUFFER_SIZE was 2 byte too large following the
move to netmgr add associated changes to lib/ns/client.c and
as a result an INSIST could be trigger if the DNS message being
constructed had a checkpoint stage that fell in those two extra
bytes. Adjusted NS_CLIENT_TCP_BUFFER_SIZE and cleaned up
client_allocsendbuf now that the previously reserved 2 bytes
are no longer used.
The ThreadSanitizer uses system synchronization primitives to check for
data race. The netmgr handle->references was missing acquire memory
barrier before resetting and reusing the memory occupied by isc_nmhandle_t.
- clone keynode->dsset rather than return a pointer so that thread
use is independent of each other.
- hold a reference to the dsset (keynode) so it can't be deleted
while in use.
- create a new keynode when removing DS records so that dangling
pointers to the deleted records will not occur.
- use a rwlock when accessing the rdatalist to prevent instabilities
when DS records are added.
There's a possibility of a race in TCP accepting code:
T1 accepts a connection C1
T2 accepts a connection C2
T1 tries to accept a connection C3, but we hit a quota,
isc_quota_cb_init() sets quota_accept_cb for the socket,
we return from accept_connection
T2 drops C2, but we race in quota_release with accepting C3 so
we don't see quota->waiting is > 0, we don't launch the callback
T1 accepts a connection C4, we are able to get the quota we clear
the quota_accept_cb from sock->quotacb
T1 drops C1, tries to call the callback which is zeroed, sigsegv.
Due to the changes introduced by the Automake migration, system tests
requiring Python (chain, pipelined, qmin, tcp), dynamic loading of
shared objects (dlzexternal, dyndb, filter-aaaa), or LMDB (nzd2nzf)
currently do not work on Windows. Temporarily disable them on that
platform by moving them from the PARALLEL_COMMON list to the
PARALLEL_UNIX list until the situation is rectified.
Without SYSTEMTESTTOP=.. lines in tests.sh scripts, SYSTEMTESTTOP is
being set to an absolute path. On Windows, this means that an absolute
Cygwin path gets passed as a command line argument to native Windows
binaries, which cannot work and causes system tests to break. Fix by
passing SYSTEMTESTTOP through cygpath on Windows, which causes that
variable to be set to an absolute "mixed mode" path (Windows path with
forward slashes).
With "make dist" producing usable source tarballs and documentation
building working again, restore the script which allows a release
tarball to be built by a GitLab CI job, only making minimal adjustments
required due to the changes in the documentation building process and
due to dropping the "version" file.
Michał Kępień
Mark AndrewsandMichał Kępień
Ondřej Surý
Suzanne GoldlustandOndřej Surý
Evan Hunt
Witold KręcickiandEvan Hunt