reassign 1021062 libreadline8 found 1021062 libreadline8/8.2-1 thanks On Sun, Oct 2, 2022, at 1:56 AM, Aurelien Jarno wrote: > control: reassign -1 bash > control: found -1 bash/5.2-1 > > Hi, > > On 2022-10-01 21:01, Kan-Ru Chen wrote: >> Package: libc6 >> Version: 2.35-1 >> Severity: grave >> Justification: renders package unusable >> X-Debbugs-Cc: kos...@debian.org >> >> Dear maintainer, >> >> After upgrading to libc6 2.35-1 (or 2.36-1 in experimental), nonexistent >> locale setting >> starts to crash the system. >> >> This is dangerous because a remote system might not always have the same >> locale installed. >> An auto update will soft-brick the system unless the sysadmin knows to set >> their LC_ALL=POSIX >> before attempting to ssh. >> >> Steps to reproduce: >> >> >From a clean installed Debian sid, upgrade to libc6 2.35-1. >> Only install C locale and en_US.UTF-8. >> >> $ LC_ALL=ja_JP.UTF-8 bash >> bash: warning: setlocale: LC_ALL: cannot change locale (ja_JP.UTF-8) >> Segmentation fault (core dumped) >> >> $ LC_ALL=ja_JP.UTF-8 gdb bash >> >> Fatal signal: Segmentation fault >> ----- Backtrace ----- >> 0x55ed3e1e8dcf ??? >> 0x55ed3e2df312 ??? >> 0x55ed3e2df488 ??? >> 0x7f0b4a39ba9f ??? >> 0x7f0b4b412204 _rl_init_locale >> 0x7f0b4b4122f1 _rl_init_eightbit >> 0x7f0b4b3f10f2 rl_initialize >> ... snip ... > > FYI, this is the full backtrace with the debug packages installed: > > #0 0x00007f8079d0ccc7 in __GI_kill () at > ../sysdeps/unix/syscall-template.S:120 > #1 0x0000559be26519c9 in termsig_handler (sig=11) at .././sig.c:625 > #2 0x0000559be2651c21 in termsig_handler (sig=<optimized out>) at > .././sig.c:492 > #3 termsig_sighandler (sig=<optimized out>) at .././sig.c:547 > #4 <signal handler called> > #5 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:74 > #6 0x0000559be26b8682 in _rl_init_locale () at > ../../.././lib/readline/nls.c:150 > #7 0x0000559be26b8772 in _rl_init_eightbit () at > ../../.././lib/readline/nls.c:227 > #8 0x0000559be269766e in readline_initialize_everything () at > ../../.././lib/readline/readline.c:1292 > #9 rl_initialize () at ../../.././lib/readline/readline.c:1183 > #10 0x0000559be2662b05 in initialize_readline () at .././bashline.c:522 > #11 0x0000559be26040a5 in yy_readline_get () at > /usr/local/src/chet/src/bash/src/parse.y:1514 > #12 0x0000559be2606aa1 in yy_getc () at > /usr/local/src/chet/src/bash/src/parse.y:1462 > #13 shell_getc (remove_quoted_newline=remove_quoted_newline@entry=1) at > /usr/local/src/chet/src/bash/src/parse.y:2393 > #14 0x0000559be2608eeb in read_token (command=0) at > /usr/local/src/chet/src/bash/src/parse.y:3400 > #15 0x0000559be260d05b in yylex () at > /usr/local/src/chet/src/bash/src/parse.y:2890 > #16 yyparse () at ./build-bash/y.tab.c:1854 > #17 0x0000559be2603586 in parse_command () at .././eval.c:348 > #18 0x0000559be2603714 in read_command () at .././eval.c:392 > #19 0x0000559be26038c6 in reader_loop () at .././eval.c:139 > #20 0x0000559be26023b5 in main (argc=1, argv=0x7ffe3da22078, > env=0x7ffe3da22088) at .././shell.c:833 > > So the problem is that _rl_init_locale (from bash) calls strlen(NULL). > >> Downgrade to 2.34-8 seems also don't fix the issue, probably some locale >> state was invalidated when upgrading. > > This is because you upgraded other packages than glibc (here bash), and the > bug > is not in glibc. Downgrading bash fixes the issue. Reassigning the bug.
Thanks! That explains why not all programs crash like this. The common library they used is libreadline and I confirmed downgrade libreadline8 to 8.2~rc2-2 fixed the issue. Reassigning to libreadline8. -- Kan-Ru Chen Debian Developer
