#0  0x00007ffff7a41de9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff7eb7563 in base::internal::SpinLockDelay (w=0x7ffff7f8cca8 <tcmalloc::Static::pageheap_lock_>, value=2, loop=43)
    at ../../third_party/tcmalloc/chromium/src/base/spinlock_linux-inl.h:66
#2  0x00007ffff7eb7475 in SpinLock::SlowLock (this=this@entry=0x7ffff7f8cca8 <tcmalloc::Static::pageheap_lock_>) at ../../third_party/tcmalloc/chromium/src/base/spinlock.cc:118
#3  0x00007ffff7ec5658 in SpinLock::Lock (this=<optimized out>) at ../../third_party/tcmalloc/chromium/src/base/spinlock.h:71
#4  SpinLockHolder::SpinLockHolder (l=<optimized out>, this=<synthetic pointer>) at ../../third_party/tcmalloc/chromium/src/base/spinlock.h:133
#5  tcmalloc::ThreadCache::InitModule () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:295
#6  0x00007ffff7ec58a5 in tcmalloc::ThreadCache::CreateCacheIfNecessary () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:338
#7  0x00007ffff7ee1bfd in tcmalloc::ThreadCache::GetCache () at ../../third_party/tcmalloc/chromium/src/thread_cache.h:452
#8  (anonymous namespace)::do_malloc (size=32) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1397
#9  (anonymous namespace)::do_malloc_or_cpp_alloc (size=32) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1429
#10 (anonymous namespace)::do_calloc (elem_size=<optimized out>, n=<optimized out>) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1442
#11 tc_calloc (n=<optimized out>, elem_size=<optimized out>) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:2009
#12 0x00007ffff7e9dbb8 in ShimCalloc (context=0x0, size=32, n=1) at ./../../base/allocator/allocator_shim.cc:202
#13 calloc (n=1, size=32) at ../../base/allocator/allocator_shim_override_libc_symbols.h:32
#14 0x00007ffff793cbc9 in _dlerror_run () from /lib64/libdl.so.2
#15 0x00007ffff793c4ff in dlsym () from /lib64/libdl.so.2
#16 0x00007ffff7f95f9d in get_dlsym (symname=symname@entry=0x7ffff7f9e4b1 "mmap", symver=symver@entry=0x0)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/wrappers.c:51
#17 0x00007ffff7f94aee in sb_mmap (addr=0x0, prot=3, flags=34, fd=-1, offset=0, length=32) at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/memory.c:28
#18 malloc (size=32) at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/memory.c:50
#19 0x00007ffff7f9ba5b in __xmalloc (size=16, file=file@entry=0x7ffff7f9e030 "/var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c", 
    func=func@entry=0x7ffff7f9e490 <__func__.8195> "init_env_entries", line=line@entry=548) at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsbutil/sb_memory.c:34
#20 0x00007ffff7f93391 in init_env_entries (env=<optimized out>, warn=1, prefixes_env=0x7fffffffebb1 "/", prefixes_num=<optimized out>, prefixes_array=<optimized out>)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:548
#21 sb_process_env_settings () at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:620
#22 0x00007ffff7f92576 in libsb_init () at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:92
#23 0x00007ffff7f93965 in before_syscall (dirfd=<optimized out>, sb_nr=-3, func=0x7ffff7f9e39e "open_rd", file=0x7ffff7eeff8b "/dev/urandom", flags=0)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:1038
#24 0x00007ffff7f99f1c in open64_DEFAULT (pathname=pathname@entry=0x7ffff7eeff8b "/dev/urandom", flags=flags@entry=0)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/wrapper-funcs/__wrapper_simple.c:58
#25 0x00007ffff7ec4117 in open64 (__oflag=0, __path=0x7ffff7eeff8b "/dev/urandom") at /usr/include/bits/fcntl2.h:53
#26 (anonymous namespace)::GetRandomAddrHint () at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:189
#27 (anonymous namespace)::AllocWithMmap (is_aslr_enabled=<optimized out>, length=1048576) at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:220
#28 MmapSysAllocator::Alloc (this=<optimized out>, size=1048576, actual_size=<optimized out>, alignment=4096) at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:467
#29 0x00007ffff7ec41e0 in DefaultSysAllocator::Alloc (this=0x7ffff7f8cd20 <default_space>, size=1048576, actual_size=0x7fffffffddd8, alignment=4096)
    at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:585
#30 0x00007ffff7ec4321 in TCMalloc_SystemAlloc (size=size@entry=1048576, actual_size=actual_size@entry=0x7fffffffddd8, alignment=4096)
    at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:656
#31 0x00007ffff7eba2d5 in tcmalloc::MetaDataAlloc (bytes=bytes@entry=131072) at ../../third_party/tcmalloc/chromium/src/common.cc:289
#32 0x00007ffff7ec28e2 in tcmalloc::PageHeapAllocator<tcmalloc::Span>::New (this=0x7ffff7f6fd00 <tcmalloc::Static::span_allocator_>)
    at ../../third_party/tcmalloc/chromium/src/page_heap_allocator.h:63
#33 tcmalloc::PageHeapAllocator<tcmalloc::Span>::Init (this=0x7ffff7f6fd00 <tcmalloc::Static::span_allocator_>) at ../../third_party/tcmalloc/chromium/src/page_heap_allocator.h:60
#34 tcmalloc::Static::InitStaticVars () at ../../third_party/tcmalloc/chromium/src/static_vars.cc:83
#35 0x00007ffff7ec555f in tcmalloc::ThreadCache::InitModule () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:303
#36 tcmalloc::ThreadCache::InitModule () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:293
#37 0x00007ffff7ec58a5 in tcmalloc::ThreadCache::CreateCacheIfNecessary () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:338
#38 0x00007ffff7ee3a4d in tcmalloc::ThreadCache::GetCache () at ../../third_party/tcmalloc/chromium/src/thread_cache.h:452
#39 (anonymous namespace)::do_malloc (size=72704) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1397
#40 tcmalloc::do_allocate_full<tcmalloc::malloc_oom> (size=72704) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1825
#41 tcmalloc::allocate_full_malloc_oom (size=72704) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1841
#42 0x00007ffff7e9dad3 in ShimMalloc (context=0x0, size=72704) at ./../../base/allocator/allocator_shim.cc:192
#43 malloc (size=72704) at ../../base/allocator/allocator_shim_override_libc_symbols.h:20
--Type <RET> for more, q to quit, c to continue without paging--
#44 0x00007ffff746e216 in (anonymous namespace)::pool::pool (this=0x7ffff7635900 <(anonymous namespace)::emergency_pool>)
    at /var/tmp/portage/sys-devel/gcc-9.2.0/work/gcc-9.2.0/libstdc++-v3/libsupc++/eh_alloc.cc:123
#45 __static_initialization_and_destruction_0 (__priority=65535, __initialize_p=1) at /var/tmp/portage/sys-devel/gcc-9.2.0/work/gcc-9.2.0/libstdc++-v3/libsupc++/eh_alloc.cc:262
#46 _GLOBAL__sub_I_eh_alloc.cc(void) () at /var/tmp/portage/sys-devel/gcc-9.2.0/work/gcc-9.2.0/libstdc++-v3/libsupc++/eh_alloc.cc:338
#47 0x00007ffff7fe438a in call_init.part () from /lib64/ld-linux-x86-64.so.2
#48 0x00007ffff7fe4486 in _dl_init () from /lib64/ld-linux-x86-64.so.2
#49 0x00007ffff7fd60ca in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
#50 0x0000000000000001 in ?? ()
#51 0x00007fffffffe2a1 in ?? ()
#52 0x0000000000000000 in ?? ()
(gdb) bt -
Display all 200 possibilities? (y or n)
(gdb) bt  
#0  0x00007ffff7a41de9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff7eb7563 in base::internal::SpinLockDelay (w=0x7ffff7f8cca8 <tcmalloc::Static::pageheap_lock_>, value=2, loop=43)
    at ../../third_party/tcmalloc/chromium/src/base/spinlock_linux-inl.h:66
#2  0x00007ffff7eb7475 in SpinLock::SlowLock (this=this@entry=0x7ffff7f8cca8 <tcmalloc::Static::pageheap_lock_>) at ../../third_party/tcmalloc/chromium/src/base/spinlock.cc:118
#3  0x00007ffff7ec5658 in SpinLock::Lock (this=<optimized out>) at ../../third_party/tcmalloc/chromium/src/base/spinlock.h:71
#4  SpinLockHolder::SpinLockHolder (l=<optimized out>, this=<synthetic pointer>) at ../../third_party/tcmalloc/chromium/src/base/spinlock.h:133
#5  tcmalloc::ThreadCache::InitModule () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:295
#6  0x00007ffff7ec58a5 in tcmalloc::ThreadCache::CreateCacheIfNecessary () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:338
#7  0x00007ffff7ee1bfd in tcmalloc::ThreadCache::GetCache () at ../../third_party/tcmalloc/chromium/src/thread_cache.h:452
#8  (anonymous namespace)::do_malloc (size=32) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1397
#9  (anonymous namespace)::do_malloc_or_cpp_alloc (size=32) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1429
#10 (anonymous namespace)::do_calloc (elem_size=<optimized out>, n=<optimized out>) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1442
#11 tc_calloc (n=<optimized out>, elem_size=<optimized out>) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:2009
#12 0x00007ffff7e9dbb8 in ShimCalloc (context=0x0, size=32, n=1) at ./../../base/allocator/allocator_shim.cc:202
#13 calloc (n=1, size=32) at ../../base/allocator/allocator_shim_override_libc_symbols.h:32
#14 0x00007ffff793cbc9 in _dlerror_run () from /lib64/libdl.so.2
#15 0x00007ffff793c4ff in dlsym () from /lib64/libdl.so.2
#16 0x00007ffff7f95f9d in get_dlsym (symname=symname@entry=0x7ffff7f9e4b1 "mmap", symver=symver@entry=0x0)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/wrappers.c:51
#17 0x00007ffff7f94aee in sb_mmap (addr=0x0, prot=3, flags=34, fd=-1, offset=0, length=32) at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/memory.c:28
#18 malloc (size=32) at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/memory.c:50
#19 0x00007ffff7f9ba5b in __xmalloc (size=16, file=file@entry=0x7ffff7f9e030 "/var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c", 
    func=func@entry=0x7ffff7f9e490 <__func__.8195> "init_env_entries", line=line@entry=548) at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsbutil/sb_memory.c:34
#20 0x00007ffff7f93391 in init_env_entries (env=<optimized out>, warn=1, prefixes_env=0x7fffffffebb1 "/", prefixes_num=<optimized out>, prefixes_array=<optimized out>)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:548
#21 sb_process_env_settings () at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:620
#22 0x00007ffff7f92576 in libsb_init () at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:92
#23 0x00007ffff7f93965 in before_syscall (dirfd=<optimized out>, sb_nr=-3, func=0x7ffff7f9e39e "open_rd", file=0x7ffff7eeff8b "/dev/urandom", flags=0)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/libsandbox.c:1038
#24 0x00007ffff7f99f1c in open64_DEFAULT (pathname=pathname@entry=0x7ffff7eeff8b "/dev/urandom", flags=flags@entry=0)
    at /var/tmp/portage/sys-apps/sandbox-2.13/work/sandbox-2.13/libsandbox/wrapper-funcs/__wrapper_simple.c:58
#25 0x00007ffff7ec4117 in open64 (__oflag=0, __path=0x7ffff7eeff8b "/dev/urandom") at /usr/include/bits/fcntl2.h:53
#26 (anonymous namespace)::GetRandomAddrHint () at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:189
#27 (anonymous namespace)::AllocWithMmap (is_aslr_enabled=<optimized out>, length=1048576) at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:220
#28 MmapSysAllocator::Alloc (this=<optimized out>, size=1048576, actual_size=<optimized out>, alignment=4096) at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:467
#29 0x00007ffff7ec41e0 in DefaultSysAllocator::Alloc (this=0x7ffff7f8cd20 <default_space>, size=1048576, actual_size=0x7fffffffddd8, alignment=4096)
    at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:585
#30 0x00007ffff7ec4321 in TCMalloc_SystemAlloc (size=size@entry=1048576, actual_size=actual_size@entry=0x7fffffffddd8, alignment=4096)
    at ../../third_party/tcmalloc/chromium/src/system-alloc.cc:656
#31 0x00007ffff7eba2d5 in tcmalloc::MetaDataAlloc (bytes=bytes@entry=131072) at ../../third_party/tcmalloc/chromium/src/common.cc:289
#32 0x00007ffff7ec28e2 in tcmalloc::PageHeapAllocator<tcmalloc::Span>::New (this=0x7ffff7f6fd00 <tcmalloc::Static::span_allocator_>)
    at ../../third_party/tcmalloc/chromium/src/page_heap_allocator.h:63
#33 tcmalloc::PageHeapAllocator<tcmalloc::Span>::Init (this=0x7ffff7f6fd00 <tcmalloc::Static::span_allocator_>) at ../../third_party/tcmalloc/chromium/src/page_heap_allocator.h:60
#34 tcmalloc::Static::InitStaticVars () at ../../third_party/tcmalloc/chromium/src/static_vars.cc:83
#35 0x00007ffff7ec555f in tcmalloc::ThreadCache::InitModule () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:303
#36 tcmalloc::ThreadCache::InitModule () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:293
#37 0x00007ffff7ec58a5 in tcmalloc::ThreadCache::CreateCacheIfNecessary () at ../../third_party/tcmalloc/chromium/src/thread_cache.cc:338
#38 0x00007ffff7ee3a4d in tcmalloc::ThreadCache::GetCache () at ../../third_party/tcmalloc/chromium/src/thread_cache.h:452
#39 (anonymous namespace)::do_malloc (size=72704) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1397
#40 tcmalloc::do_allocate_full<tcmalloc::malloc_oom> (size=72704) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1825
#41 tcmalloc::allocate_full_malloc_oom (size=72704) at ../../third_party/tcmalloc/chromium/src/tcmalloc.cc:1841
#42 0x00007ffff7e9dad3 in ShimMalloc (context=0x0, size=72704) at ./../../base/allocator/allocator_shim.cc:192
#43 malloc (size=72704) at ../../base/allocator/allocator_shim_override_libc_symbols.h:20
#44 0x00007ffff746e216 in (anonymous namespace)::pool::pool (this=0x7ffff7635900 <(anonymous namespace)::emergency_pool>) at /var/tmp/portage/sys-devel/gcc-9.2.0/work/gcc-9.2.0/libstdc++-v3/libsupc++/eh_alloc.cc:123
#45 __static_initialization_and_destruction_0 (__priority=65535, __initialize_p=1) at /var/tmp/portage/sys-devel/gcc-9.2.0/work/gcc-9.2.0/libstdc++-v3/libsupc++/eh_alloc.cc:262
#46 _GLOBAL__sub_I_eh_alloc.cc(void) () at /var/tmp/portage/sys-devel/gcc-9.2.0/work/gcc-9.2.0/libstdc++-v3/libsupc++/eh_alloc.cc:338
#47 0x00007ffff7fe438a in call_init.part () from /lib64/ld-linux-x86-64.so.2
#48 0x00007ffff7fe4486 in _dl_init () from /lib64/ld-linux-x86-64.so.2
#49 0x00007ffff7fd60ca in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
#50 0x0000000000000001 in ?? ()
#51 0x00007fffffffe2a1 in ?? ()
#52 0x0000000000000000 in ?? ()