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authorFlorian Weimer <fweimer@redhat.com>2021-09-13 11:06:08 +0200
committerFlorian Weimer <fweimer@redhat.com>2021-09-13 11:06:08 +0200
commit8af8456004edbab71f8903a60a3cae442cf6fe69 (patch)
tree735e5c4cb622683727395fd9ec345788597c44a2 /sysdeps/pthread/Makefile
parent2fd36391be523e882f2d102063710d3cf7ee7fa8 (diff)
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nptl: pthread_kill, pthread_cancel should not fail after exit (bug 19193)
This closes one remaining race condition related to bug 12889: if
the thread already exited on the kernel side, returning ESRCH
is not correct because that error is reserved for the thread IDs
(pthread_t values) whose lifetime has ended.  In case of a
kernel-side exit and a valid thread ID, no signal needs to be sent
and cancellation does not have an effect, so just return 0.

sysdeps/pthread/tst-kill4.c triggers undefined behavior and is
removed with this commit.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/pthread/Makefile')
-rw-r--r--sysdeps/pthread/Makefile5
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index 42f9fc5072..dedfa0d290 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -89,7 +89,7 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
 	 tst-join8 tst-join9 tst-join10 tst-join11 tst-join12 tst-join13 \
 	 tst-join14 tst-join15 \
 	 tst-key1 tst-key2 tst-key3 tst-key4 \
-	 tst-kill1 tst-kill2 tst-kill3 tst-kill4 tst-kill5 tst-kill6 \
+	 tst-kill1 tst-kill2 tst-kill3 tst-kill5 tst-kill6 \
 	 tst-locale1 tst-locale2 \
 	 tst-memstream \
 	 tst-mutex-errorcheck tst-mutex1 tst-mutex2 tst-mutex3 tst-mutex4 \
@@ -118,6 +118,9 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
 	 tst-unload \
 	 tst-unwind-thread \
 	 tst-pt-vfork1 tst-pt-vfork2 tst-vfork1x tst-vfork2x \
+	 tst-pthread_cancel-exited \
+	 tst-pthread_kill-exited \
+	 # tests
 
 tests-time64 := \
   tst-abstime-time64 \