[PATCH 0/3] Fix ESRCH issues in pthread_cancel, pthread_kill
Florian Weimer
fweimer@redhat.com
Tue Aug 17 13:50:54 GMT 2021
This mini-series came out of a downstream bug report:
glibc: pthread_cancel fails with ESRCH yet subsequent pthread_join passes
<https://bugzilla.redhat.com/show_bug.cgi?id=1994068>
Apparently the race is much easier to trigger due to the changes in
glibc 2.34.
Tested on i686-linux-gnu, x86_64-linux-gnu. Built with
build-many-glibcs.py.
Thanks,
Florian
Florian Weimer (3):
support: Add support_wait_for_thread_exit
nptl: pthread_kill, pthread_cancel should fail after exit (bug 19193)
nptl: Fix race between pthread_kill and thread exit (bug 12889)
nptl/allocatestack.c | 1 +
nptl/descr.h | 12 ++
nptl/pthread_cancel.c | 9 +-
nptl/pthread_create.c | 20 ++++
nptl/pthread_kill.c | 30 ++++-
support/Makefile | 3 +-
support/support.h | 4 +
support/support_wait_for_thread_exit.c | 67 +++++++++++
sysdeps/pthread/Makefile | 7 +-
sysdeps/pthread/tst-kill4.c | 90 --------------
sysdeps/pthread/tst-pthread_cancel-exited.c | 45 +++++++
.../pthread/tst-pthread_cancel-select-loop.c | 87 ++++++++++++++
sysdeps/pthread/tst-pthread_kill-exited.c | 46 ++++++++
sysdeps/pthread/tst-pthread_kill-exiting.c | 110 ++++++++++++++++++
14 files changed, 431 insertions(+), 100 deletions(-)
create mode 100644 support/support_wait_for_thread_exit.c
delete mode 100644 sysdeps/pthread/tst-kill4.c
create mode 100644 sysdeps/pthread/tst-pthread_cancel-exited.c
create mode 100644 sysdeps/pthread/tst-pthread_cancel-select-loop.c
create mode 100644 sysdeps/pthread/tst-pthread_kill-exited.c
create mode 100644 sysdeps/pthread/tst-pthread_kill-exiting.c
--
2.31.1
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