From b57525f1a376149840f740a31535681c07152ba4 Mon Sep 17 00:00:00 2001 From: "Dmitry V. Levin" Date: Thu, 18 Jun 2015 21:40:46 +0000 Subject: Fix potential hanging of gethostbyaddr_r/gethostbyname_r When "reorder" resolver option is enabled, threads of a multi-threaded process could hang in gethostbyaddr_r, gethostbyname_r, or gethostbyname2_r. Due to a trivial bug in _res_hconf_reorder_addrs, simultaneous invocations of this function in a multi-threaded process could result to _res_hconf_reorder_addrs returning without releasing the lock it holds, causing other threads to block indefinitely while waiting for the lock that is not going to be released. [BZ #17977] * resolv/res_hconf.c (_res_hconf_reorder_addrs): Fix unlocking when initializing interface list, based on the bug analysis and the patch proposed by Eric Newton. * resolv/tst-res_hconf_reorder.c: New test. * resolv/Makefile [$(have-thread-library) = yes] (tests): Add tst-res_hconf_reorder. ($(objpfx)tst-res_hconf_reorder): Depend on $(libdl) and $(shared-thread-library). (tst-res_hconf_reorder-ENV): New variable. --- NEWS | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'NEWS') diff --git a/NEWS b/NEWS index 4e21210..d103251 100644 --- a/NEWS +++ b/NEWS @@ -14,16 +14,16 @@ Version 2.22 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293, 17322, 17523, 17542, 17569, 17581, 17588, 17596, 17620, 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17836, 17912, 17916, 17930, - 17932, 17944, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, - 17996, 17998, 17999, 18007, 18019, 18020, 18029, 18030, 18032, 18034, - 18036, 18038, 18039, 18042, 18043, 18046, 18047, 18049, 18068, 18080, - 18093, 18100, 18104, 18110, 18111, 18116, 18125, 18128, 18138, 18185, - 18196, 18197, 18206, 18210, 18211, 18217, 18220, 18221, 18234, 18244, - 18247, 18287, 18319, 18324, 18333, 18346, 18397, 18409, 18410, 18412, - 18418, 18422, 18434, 18444, 18468, 18469, 18470, 18479, 18483, 18495, - 18496, 18497, 18498, 18507, 18512, 18513, 18519, 18520, 18522, 18527, - 18528, 18529, 18530, 18532, 18533, 18534, 18536, 18539, 18540, 18542, - 18544, 18545, 18546, 18547, 18553, 18558, 18569. + 17932, 17944, 17949, 17964, 17965, 17967, 17969, 17977, 17978, 17987, + 17991, 17996, 17998, 17999, 18007, 18019, 18020, 18029, 18030, 18032, + 18034, 18036, 18038, 18039, 18042, 18043, 18046, 18047, 18049, 18068, + 18080, 18093, 18100, 18104, 18110, 18111, 18116, 18125, 18128, 18138, + 18185, 18196, 18197, 18206, 18210, 18211, 18217, 18220, 18221, 18234, + 18244, 18247, 18287, 18319, 18324, 18333, 18346, 18397, 18409, 18410, + 18412, 18418, 18422, 18434, 18444, 18468, 18469, 18470, 18479, 18483, + 18495, 18496, 18497, 18498, 18507, 18512, 18513, 18519, 18520, 18522, + 18527, 18528, 18529, 18530, 18532, 18533, 18534, 18536, 18539, 18540, + 18542, 18544, 18545, 18546, 18547, 18553, 18558, 18569. * Cache information can be queried via sysconf() function on s390 e.g. with _SC_LEVEL1_ICACHE_SIZE as argument. -- cgit v1.1