https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111024
Bug ID: 111024
Summary: libgomp: FAILs with oldish libnuma/libmemkind
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: openmp
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
CC: burnus at gcc dot gnu.org, jakub at gcc dot gnu.org
Target Milestone: ---
Re commit r14-2462-g450b05ce54d3f08c583c3b5341233ce0df99725b "libgomp: Use
libnuma for OpenMP's partition=nearest allocation trait" (plus commit
r14-2514-g407d68daed00e040a7d9545b2a18aa27bf93a106 "libgomp: Fix allocator
handling for Linux when libnuma is not available"), on our amdfury2, nvidia-4a
systems (not necessarily an exhaustive list), I see:
+PASS: libgomp.c/../libgomp.c-c++-common/alloc-11.c (test for excess
errors)
+FAIL: libgomp.c/../libgomp.c-c++-common/alloc-11.c execution test
alloc-11.exe: src/memkind_interleave.c:54: memkind_interleave_init_once:
Assertion `err == 0' failed.
+PASS: libgomp.c/../libgomp.c-c++-common/alloc-12.c (test for excess
errors)
+FAIL: libgomp.c/../libgomp.c-c++-common/alloc-12.c execution test
alloc-12.exe: src/memkind_interleave.c:54: memkind_interleave_init_once:
Assertion `err == 0' failed.
Same for C++.
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007ffff75b2921 in __GI_abort () at abort.c:79
#2 0x00007ffff75a248a in __assert_fail_base (fmt=0x7ffff7729750
"%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
assertion=assertion@entry=0x7ffff7169682 "err == 0",
file=file@entry=0x7ffff716986a "src/memkind_interleave.c", line=line@entry=54,
function=function@entry=0x7ffff7169890 "memkind_interleave_init_once") at
assert.c:92
#3 0x00007ffff75a2502 in __GI___assert_fail (assertion=0x7ffff7169682 "err
== 0", file=0x7ffff716986a "src/memkind_interleave.c", line=54,
function=0x7ffff7169890 "memkind_interleave_init_once") at assert.c:101
#4 0x00007ffff71691c4 in memkind_interleave_init_once () from
/usr/lib/x86_64-linux-gnu/libmemkind.so.0
#5 0x00007ffff7972907 in __pthread_once_slow (once_control=0x7ffff736d72c,
init_routine=0x7ffff7169180 <memkind_interleave_init_once>) at
pthread_once.c:116
#6 0x00007ffff7166d95 in memkind_malloc () from
/usr/lib/x86_64-linux-gnu/libmemkind.so.0
#7 0x00007ffff7bbed04 in omp_aligned_alloc (alignment=1, size=4,
allocator=6309568) at [...]/libgomp/config/linux/../../allocator.c:521
#8 0x0000000000400fd9 in main () at
source-gcc/libgomp/testsuite/libgomp.c-c++-common/alloc-11.c:182
Note that the failure is in libmemkind; the commits that trigger it are for
libnuma support.
Both these system have Ubuntu bionic libnuma1 2.0.11-2.1ubuntu0.1, libmemkind0
1.1.0-0ubuntu1. Assuming this is similar to the latter's upstream v1.1.0,
that's
<https://github.com/memkind/memkind/blob/v1.1.0/src/memkind_interleave.c#L53-L54>,
where, per assembly-level debugging, we've got 'err = MEMKIND_ERROR_MALLCTL'
from 'memkind_arena_create_map';
<https://github.com/memkind/memkind/blob/v1.1.0/src/memkind_arena.c#L95-L133>.
Might be a bug in libnuma/libmemkind, fixed in later versions (we're not seeing
these FAILs on other systems), or is the bug on our side, due to calling into
libnuma/libmemkind with some unexpected parameters, for example?
