Package: libc6 Version: 2.33-7 Severity: normal Tags: upstream Forwarded: https://sourceware.org/bugzilla/show_bug.cgi?id=27653 Affects: libasan6
This has been reported upstream, but let's give it more visibility (this could save hours of debugging...). In short, using LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.6 with some executables can make the executable hang. Examples: With LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.6 inkscape Thread 1 (Thread 0x7f07770c8bc0 (LWP 424733) "inkscape"): #0 __futex_abstimed_wait_common64 (futex_word=futex_word@entry=0x7f077dd21be8 <_nl_state_lock+8>, expected=expected@entry=2, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=false) at ../sysdeps/nptl/futex-internal.c:87 err = -512 op = 393 #1 0x00007f077db3f148 in __GI___futex_abstimed_wait64 (futex_word=futex_word@entry=0x7f077dd21be8 <_nl_state_lock+8>, expected=expected@entry=2, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:112 #2 0x00007f077db37ad5 in __pthread_rwlock_wrlock_full64 (abstime=0x0, clockid=0, rwlock=0x7f077dd21be0 <_nl_state_lock>) at pthread_rwlock_common.c:829 private = 0 err = <optimized out> may_share_futex_used_flag = <optimized out> wpf = <optimized out> ready = false r = <optimized out> result = <optimized out> #3 __GI___pthread_rwlock_wrlock (rwlock=0x7f077dd21be0 <_nl_state_lock>) at pthread_rwlock_wrlock.c:27 result = <optimized out> #4 0x00007f077db8375e in set_binding_values (domainname=0x7f077b8be5b7 "gspell-1", dirnamep=0x0, codesetp=0x7ffdaf37e428) at bindtextdom.c:91 __p = <optimized out> binding = <optimized out> modified = <optimized out> #5 0x00007f077db83bd1 in set_binding_values (codesetp=0x7ffdaf37e428, dirnamep=0x0, domainname=<optimized out>) at bindtextdom.c:82 [...] and with LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.6 vlc Thread 1 (Thread 0x7f2f9be09340 (LWP 424824) "vlc"): #0 __futex_abstimed_wait_common64 (futex_word=futex_word@entry=0x7f2f9c651be8 <_nl_state_lock+8>, expected=expected@entry=2, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=false) at ../sysdeps/nptl/futex-internal.c:87 clockbit = <optimized out> err = -512 op = 393 #1 0x00007f2f9c675148 in __GI___futex_abstimed_wait64 (futex_word=futex_word@entry=0x7f2f9c651be8 <_nl_state_lock+8>, expected=expected@entry=2, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:112 No locals. #2 0x00007f2f9c66dad5 in __pthread_rwlock_wrlock_full64 (abstime=0x0, clockid=0, rwlock=0x7f2f9c651be0 <_nl_state_lock>) at pthread_rwlock_common.c:829 private = 0 err = <optimized out> may_share_futex_used_flag = <optimized out> wpf = <optimized out> ready = false r = <optimized out> may_share_futex_used_flag = <optimized out> r = <optimized out> done = <optimized out> wpf = <optimized out> ready = <optimized out> __value = <optimized out> prefer_writer = <optimized out> private = <optimized out> wf = <optimized out> err = <optimized out> w = <optimized out> w = <optimized out> private = <optimized out> err = <optimized out> w = <optimized out> wf = <optimized out> wf = <optimized out> __value = <optimized out> #3 __GI___pthread_rwlock_wrlock (rwlock=0x7f2f9c651be0 <_nl_state_lock>) at pthread_rwlock_wrlock.c:27 result = <optimized out> #4 0x00007f2f9c4b375e in set_binding_values (domainname=0x7f2f9c2f666b "vlc", dirnamep=0x0, codesetp=0x7fff24056378) at bindtextdom.c:91 __p = <optimized out> binding = <optimized out> modified = <optimized out> [...] and similarly with gnuplot: Thread 1 (Thread 0x7fbcf39e4bc0 (LWP 424576) "gnuplot"): #0 __futex_abstimed_wait_common64 (futex_word=futex_word@entry=0x7fbcf8be8be8 <_nl_state_lock+8>, expected=expected@entry=2, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=false) at ../sysdeps/nptl/futex-internal.c:87 err = -512 op = 393 #1 0x00007fbcf8c06148 in __GI___futex_abstimed_wait64 (futex_word=futex_word@entry=0x7fbcf8be8be8 <_nl_state_lock+8>, expected=expected@entry=2, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:112 #2 0x00007fbcf8bfead5 in __pthread_rwlock_wrlock_full64 (abstime=0x0, clockid=0, rwlock=0x7fbcf8be8be0 <_nl_state_lock>) at pthread_rwlock_common.c:829 private = 0 err = <optimized out> may_share_futex_used_flag = <optimized out> wpf = <optimized out> ready = false r = <optimized out> result = <optimized out> #3 __GI___pthread_rwlock_wrlock (rwlock=0x7fbcf8be8be0 <_nl_state_lock>) at pthread_rwlock_wrlock.c:27 result = <optimized out> #4 0x00007fbcf8a4a75e in set_binding_values (domainname=0x7fbcf7de4f51 "gtk30-properties", dirnamep=0x7fff4f41f848, codesetp=0x0) at bindtextdom.c:91 __p = <optimized out> binding = <optimized out> modified = <optimized out> [...] -- System Information: Debian Release: bookworm/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'stable-security'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 5.16.0-3-amd64 (SMP w/8 CPU threads; PREEMPT) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=POSIX, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages libc6 depends on: ii libgcc-s1 12-20220302-1 Versions of packages libc6 recommends: ii libidn2-0 2.3.2-2 Versions of packages libc6 suggests: ii debconf [debconf-2.0] 1.5.79 ii glibc-doc 2.33-7 ii libc-l10n 2.33-7 pn libnss-nis <none> pn libnss-nisplus <none> ii locales 2.33-7 -- debconf information excluded -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)