On 2025-03-06 19:03, Bill Allombert wrote: > On Thu, Mar 06, 2025 at 07:02:25AM +0100, Aurelien Jarno wrote: > > Hi Bill, > > > > On 2025-03-05 21:30, Bill Allombert wrote: > > > Package: libc6 > > > Version: 2.41-7 > > > Severity: normal > > > > > > Hello Aurelien, > > > > > > During a test build pari FTBFS due to a test-suite failure in a test > > > involving pthread. > > > this failure is only reproducible with libc6 2.41. > > > > Do you have more details about that? I have tried to build pari locally, > > and it builds fine. On which architecture is that? In which version? > > Is there a way to do a bisection ? I think this would settle the matter. >
It's what I was currently doing. I found that the issue is caused by this upstream commit: https://sourceware.org/git/?p=glibc.git;a=commit;h=89b53077d2a58f00e7debdfe58afabe953dac60d This is the corresponding bug that got fixed by this commit: https://sourceware.org/bugzilla/show_bug.cgi?id=12683 Compiling pari with -fsanitize=address, I get this trace for the double free: ==3034379==ERROR: AddressSanitizer: attempting double-free on 0x511000010800 in thread T12: ^[[A #0 0x7f3b35ef3918 in free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 #1 0x7f3b357be3ec in pari_free ../src/headers/pariinl.h:1166 #2 0x7f3b357be3ec in pari_stack_delete ../src/headers/pariinl.h:960 #3 0x7f3b357be3ec in pari_close_evaluator ../src/language/eval.c:531 #4 0x7f3b358027ad in pari_thread_close ../src/language/init.c:1206 #5 0x7f3b359c01df in mt_queue_run ../src/mt/pthread.c:171 #6 0x7f3b35e5b1d5 in asan_thread_start ../../../../src/libsanitizer/asan/asan_interceptors.cpp:234 #7 0x7f3b34354abc in start_thread nptl/pthread_create.c:448 #8 0x7f3b343d27b7 in __clone3 ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78 0x511000010800 is located 0 bytes inside of 256-byte region [0x511000010800,0x511000010900) freed by thread T12 here: #0 0x7f3b35ef3918 in free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 #1 0x7f3b357be3ec in pari_free ../src/headers/pariinl.h:1166 #2 0x7f3b357be3ec in pari_stack_delete ../src/headers/pariinl.h:960 #3 0x7f3b357be3ec in pari_close_evaluator ../src/language/eval.c:531 previously allocated by thread T12 here: #0 0x7f3b35ef4c77 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69 #1 0x7f3b357bdfc7 in pari_realloc_ip ../src/headers/pariinl.h:1200 #2 0x7f3b357bdfc7 in pari_stack_alloc ../src/headers/pariinl.h:949 #3 0x7f3b357bdfc7 in pari_init_evaluator ../src/language/eval.c:514 Thread T12 created by T0 here: #0 0x7f3b35eecb01 in pthread_create ../../../../src/libsanitizer/asan/asan_interceptors.cpp:245 #1 0x7f3b359c204b in mt_queue_start_lim ../src/mt/pthread.c:399 Regards Aurelien -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurel...@aurel32.net http://aurel32.net
