https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101761
Bug ID: 101761
Summary: Random hang with 29_atomics/atomic_ref/wait_notify.cc
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: crazylht at gmail dot com, wwwhhhyyy333 at gmail dot com
Target Milestone: ---
Target: x86-64
29_atomics/atomic_ref/wait_notify.cc in 64-bit on Skylake server:
(gdb) bt
#0 0x00007f897288cc1d in syscall () from /lib64/libc.so.6
#1 0x00000000004018be in std::__detail::__platform_wait<int> (
__addr=__addr@entry=0x405400
<std::__detail::__waiter_pool_base::_S_for(void const*)::__w+832>,
__val=__val@entry=3)
at
/export/users/hjl/build/gnu/tools-build/gcc-gitlab-native/build-x86_64-linux/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_wait.h:104
#2 0x00000000004022a3 in std::__detail::__waiter_pool::_M_do_wait (__old=3,
__addr=0x405400 <std::__detail::__waiter_pool_base::_S_for(void
const*)::__w+832>, this=<optimized out>)
at
/export/users/hjl/build/gnu/tools-build/gcc-gitlab-native/build-x86_64-linux/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_wait.h:261
#3 std::__detail::__waiter<std::integral_constant<bool, true>
>::_M_do_wait_v<void*, std::__atomic_impl::wait<void*>(void* const*,
std::remove_volatile<void*>::type, std::memory_order)::{lambda()#1}>(void*,
std::__atomic_impl::wait<void*>(void* const*,
std::remove_volatile<void*>::type, std::memory_order)::{lambda()#1})
(__vfn=..., __old=0x2a, this=<synthetic pointer>)
at
/export/users/hjl/build/gnu/tools-build/gcc-gitlab-native/build-x86_64-linux/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_wait.h:400
#4 std::__atomic_wait_address_v<void*, std::__atomic_impl::wait<void*>(void*
const*, std::remove_volatile<void*>::type,
std::memory_order)::{lambda()#1}>(void* const*, void*,
std::__atomic_impl::wait<void*>(void* const*,
std::remove_volatile<void*>::type, std::memory_order)::{lambda()#1})
(__addr=<optimized out>,
__old=0x2a, __vfn=...)
at
/export/users/hjl/build/gnu/tools-build/gcc-gitlab-native/build-x86_64-linux/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_wait.h:430
#5 0x0000000000402366 in std::__atomic_impl::wait<void*> (
__m=std::memory_order::seq_cst, __old=<optimized out>,
__ptr=<optimized out>)
at
/export/users/hjl/build/gnu/tools-build/gcc-gitlab-native/build-x86_64-linux/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_base.h:1018
#6 std::__atomic_ref<void*, false, false>::wait (
__m=std::memory_order::seq_cst, __old=<optimized out>, this=0x7ffed19864e8)
at
/export/users/hjl/build/gnu/tools-build/gcc-gitlab-native/build-x86_64-linux/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_base.h:1874
#7 test<void*> (va=va@entry=0x0, vb=vb@entry=0x2a)
at
/export/gnu/import/git/gitlab/x86-gcc/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc:44
#8 0x000000000040125b in main ()
at
/export/gnu/import/git/gitlab/x86-gcc/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc:57
(gdb)
In 32-bit,
(gdb) bt
#0 0xf7fc655d in __kernel_vsyscall ()
#1 0xf7bac46b in syscall () from /lib/libc.so.6
#2 0x0804995d in std::__detail::__platform_wait<int> (
__addr=0x804d680 <std::__detail::__waiter_pool_base::_S_for(void
const*)::__w+1472>, __val=3)
at
/export/gnu/import/git/gcc-test-master-intel64-native/bld/x86_64-pc-linux-gnu/32/libstdc++-v3/include/bits/atomic_wait.h:104
#3 0x08049e3a in std::__detail::__waiter_pool::_M_do_wait (__old=3,
__addr=0x804d680 <std::__detail::__waiter_pool_base::_S_for(void
const*)::__w+1472>, this=<optimized out>)
at
/export/gnu/import/git/gcc-test-master-intel64-native/bld/x86_64-pc-linux-gnu/32/libstdc++-v3/include/bits/atomic_wait.h:261
#4 std::__detail::__waiter<std::integral_constant<bool, true>
>::_M_do_wait_v<unsigned int, std::__atomic_impl::wait<unsigned int>(unsigned
int const*, std::remove_volatile<unsigned int>::type,
std::memory_order)::{lambda()#1}>(unsigned int,
std::__atomic_impl::wait<unsigned int>(unsigned int const*,
std::remove_volatile<unsigned int>::type, std::memory_order)::{lambda()#1})
(__vfn=...,
__old=42, this=<synthetic pointer>)
at
/export/gnu/import/git/gcc-test-master-intel64-native/bld/x86_64-pc-linux-gnu/32/libstdc++-v3/include/bits/atomic_wait.h:400
#5 std::__atomic_wait_address_v<unsigned int,
std::__atomic_impl::wait<unsigned int>(unsigned int const*,
std::remove_volatile<unsigned int>::type,
std::memory_order)::{lambda()#1}>(unsigned int const*, unsigned int,
std::__atomic_impl::wa--Type <RET> for more, q to quit, c to continue without
paging--
it<unsigned int>(unsigned int const*, std::remove_volatile<unsigned int>::type,
std::memory_order)::{lambda()#1}) (__addr=0xffeb402c, __old=42, __vfn=...)
at
/export/gnu/import/git/gcc-test-master-intel64-native/bld/x86_64-pc-linux-gnu/32/libstdc++-v3/include/bits/atomic_wait.h:430
#6 0x08049ef2 in std::__atomic_impl::wait<unsigned int> (
__m=std::memory_order::seq_cst, __old=<optimized out>,
__ptr=<optimized out>)
at
/export/gnu/import/git/gcc-test-master-intel64-native/bld/x86_64-pc-linux-gnu/32/libstdc++-v3/include/bits/atomic_base.h:1018
#7 std::__atomic_ref<unsigned int, true, false>::wait (
__m=std::memory_order::seq_cst, __old=<optimized out>, this=0xffeb4034)
at
/export/gnu/import/git/gcc-test-master-intel64-native/bld/x86_64-pc-linux-gnu/32/libstdc++-v3/include/bits/atomic_base.h:1570
#8 test<unsigned int> (va=0, vb=42)
at
/export/gnu/import/git/gcc-test-master-intel64-native/src-master/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc:44
#9 0x0804926b in main ()
at
/export/gnu/import/git/gcc-test-master-intel64-native/src-master/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc:54
(gdb)
GCC was configured with
--with-arch=native --with-cpu=native --prefix=/usr/12.0.0 --enable-clocale=gnu
--with-system-zlib --enable-shared --enable-cet --with-demangler-in-ld
--enable-libmpx --with-multilib-list=m32,m64,mx32 --with-fpmath=sse
It happens about once a few weeks.
