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samba-mirror/lib/util/tests/tfork-helgrind.supp

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tfork: add a suppresssions file for helgrind tfork_atexit_unknown[1|2]: No idea what triggers this, definitely not tfork itself. tfork_pthread_get_specific: Helgrind reports: Possible data race during read of size 4 at 0x5141304 by thread #3 Locks held: none at 0x50E602E: tfork_global_get (tfork.c:301) by 0x50E69B1: tfork_create (tfork.c:737) by 0x2F7419: tfork_thread (tfork.c:431) by 0x4C35AC5: mythread_wrapper (hg_intercepts.c:389) by 0x8D38593: start_thread (pthread_create.c:463) by 0x9A70E6E: clone (clone.S:95) This conflicts with a previous write of size 4 by thread #2 Locks held: none at 0x8D3F7B7: pthread_key_create (pthread_key_create.c:41) by 0x50E5F79: tfork_global_initialize (tfork.c:280) by 0x8D3FEA6: __pthread_once_slow (pthread_once.c:116) by 0x50E6999: tfork_create (tfork.c:728) by 0x2F7419: tfork_thread (tfork.c:431) by 0x4C35AC5: mythread_wrapper (hg_intercepts.c:389) by 0x8D38593: start_thread (pthread_create.c:463) by 0x9A70E6E: clone (clone.S:95) Location 0x5141304 is 0 bytes inside global var "tfork_global_key" declared at tfork.c:122 This is nonsense, tfork_global_get() calls pthread_getspecific, so we're looking at the pthread_key_create()/pthread_[g|s]etspecific() API here which works with threads by design. Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
2018-11-19 15:18:34 +01:00
{
tfork_atexit_unknown1
Helgrind:Misc
fun:mutex_destroy_WRK
fun:pthread_mutex_destroy
obj:/usr/lib64/libp11-kit.so.0.3.0
fun:_dl_fini
fun:__run_exit_handlers
fun:exit
fun:(below main)
}
{
tfork_atexit_unknown2
Helgrind:Misc
fun:mutex_destroy_WRK
fun:pthread_mutex_destroy
fun:_dl_fini
fun:__run_exit_handlers
fun:exit
fun:(below main)
}
{
tfork_pthread_get_specific
Helgrind:Race
fun:tfork_global_get
fun:tfork_create
fun:tfork_thread
fun:mythread_wrapper
fun:start_thread
fun:clone
}
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