Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: x86_64-pc-linux-gnu-gcc Compilation CFLAGS: -O2 -pipe -march=native -ggdb3 uname output: Linux 2021-10-24 5.15.34-gentoo-dist-hardened #1 SMP Sat Apr 16 02:20:51 BST 2022 x86_64 AMD Ryzen 9 3950X 16-Core Processor AuthenticAMD GNU/Linux Machine Type: x86_64-pc-linux-gnu
Bash Version: 5.2
Patch Level: 0
Release Status: beta
Description:
Bash crashes when running compgen -c -X a.
Repeat-By:
# bash -c "compgen -c -X a"
Segmentation fault (core dumped)
----
Originally noticed when running 'eselect compiler-shadow update' in Gentoo
Linux, but Ionen Wolkens (ionen@g.o) came up with a far smaller reproducer:
# bash -c "compgen -c -X a"
Segmentation fault (core dumped)
Backtrace:
```
Starting program: /bin/bash -c compgen\ -c\ -X\ a
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Program received signal SIGSEGV, Segmentation fault.
__strchr_avx2 () at ../sysdeps/x86_64/multiarch/strchr-avx2.S:65
65 vmovdqu (%rdi), %ymm8
(gdb) bt
#0 __strchr_avx2 () at ../sysdeps/x86_64/multiarch/strchr-avx2.S:65
#1 0x00005555555c618f in quote_word_break_chars (text=0x55555565f300
"/usr/local/sbin/.keep") at bashline.c:4143
#2 bash_quote_filename (s=s@entry=0x55555565f2c0 "/usr/local/sbin/.keep",
rtype=rtype@entry=1, qcp=qcp@entry=0x7fffffffdbbf "") at bashline.c:4346
#3 0x00005555555c73f5 in executable_completion (searching_path=1,
filename=0x55555565f2c0 "/usr/local/sbin/.keep") at bashline.c:1951
#4 command_word_completion_function (hint_text=0x555555613bff "", state=83) at
bashline.c:2378
#5 0x00007ffff7f77257 in rl_completion_matches (text=text@entry=0x555555613bff
"", entry_function=0x5555555c6d70 <command_word_completion_function>)
at
/usr/src/debug/sys-libs/readline-8.2_beta/readline-8.2-beta/complete.c:2219
#6 0x00005555555d00ef in gen_action_completions
(text=text@entry=0x555555613bff "", cs=<optimized out>, cs=<optimized out>) at
pcomplete.c:856
#7 0x00005555555d02f1 in gen_compspec_completions (cs=cs@entry=0x555555655860,
cmd=cmd@entry=0x5555556130b0 "compgen", word=word@entry=0x555555613bff "",
start=start@entry=0,
end=end@entry=0, foundp=foundp@entry=0x0) at pcomplete.c:1333
#8 0x00005555555ebab1 in compgen_builtin (list=<optimized out>) at
./complete.def:721
#9 0x0000555555579f7b in execute_builtin (builtin=builtin@entry=0x5555555eb7f0
<compgen_builtin>, words=words@entry=0x555555655510, flags=flags@entry=64,
subshell=subshell@entry=0)
at execute_cmd.c:4958
#10 0x000055555557fec1 in execute_builtin_or_function (flags=64,
fds_to_close=0x5555556551a0, redirects=0x0, var=0x0, builtin=0x5555555eb7f0
<compgen_builtin>, words=0x555555655510)
at execute_cmd.c:5472
#11 execute_simple_command (fds_to_close=0x5555556551a0, async=<optimized out>,
pipe_out=<optimized out>, pipe_in=<optimized out>,
simple_command=0x555555655080) at execute_cmd.c:4724
#12 execute_command_internal (command=0x555555655050,
asynchronous=asynchronous@entry=0, pipe_in=pipe_in@entry=-1,
pipe_out=pipe_out@entry=-1, fds_to_close=fds_to_close@entry=0x5555556551a0)
at execute_cmd.c:866
#13 0x00005555555d8c99 in parse_and_execute (string=<optimized out>,
from_file=from_file@entry=0x5555555fd09f "-c", flags=flags@entry=20) at
evalstring.c:519
#14 0x0000555555565650 in run_one_command (command=0x7fffffffe4fe "compgen -c
-X a") at shell.c:1473
#15 0x0000555555563f0d in main (argc=3, argv=0x7fffffffe268,
env=0x7fffffffe288) at shell.c:763
```
Let me know if I need to grab more information.
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