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authorUlrich Drepper <drepper@gmail.com>2011-09-05 12:46:12 -0400
committerUlrich Drepper <drepper@gmail.com>2011-09-05 12:46:12 -0400
commit3b142ce5728f6d683f3375fb33099ebf243f6681 (patch)
tree896f73d70426cd798e72bd786c0cb000d55b50ad /nptl
parent2f0ad8f3a470fa5e9aeb9c5a41984f96ae58d7ba (diff)
parent5f4318d102d604e2f80bc97927e2d80f76063639 (diff)
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Merge branch 'master' of ssh://sourceware.org/git/glibc
Conflicts: ChangeLog
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog5
-rw-r--r--nptl/allocatestack.c11
2 files changed, 15 insertions, 1 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 06d19b9..c44ce2a 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,8 @@
+2011-08-31 Andreas Schwab <schwab@redhat.com>
+
+ * allocatestack.c (setxid_mark_thread): Ensure that the exiting
+ thread is woken up.
+
2011-08-20 David S. Miller <davem@davemloft.net>
* Makefile (tst-cleanup0.out): Fix typo in output redirection.
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 9b8b0ce..23d2ce5 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -999,7 +999,16 @@ setxid_mark_thread (struct xid_command *cmdp, struct pthread *t)
/* If the thread is exiting right now, ignore it. */
if ((ch & EXITING_BITMASK) != 0)
- return;
+ {
+ /* Release the futex if there is no other setxid in
+ progress. */
+ if ((ch & SETXID_BITMASK) == 0)
+ {
+ t->setxid_futex = 1;
+ lll_futex_wake (&t->setxid_futex, 1, LLL_PRIVATE);
+ }
+ return;
+ }
}
while (atomic_compare_and_exchange_bool_acq (&t->cancelhandling,
ch | SETXID_BITMASK, ch));