*** This bug is a duplicate of bug 1337827 ***
https://bugs.launchpad.net/bugs/1337827
** This bug has been marked a duplicate of bug 1337827
Bash crashes with a segmentation fault on "trap 'kill 0' SIGTERM EXIT"
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https://bugs.launchpad.net/bugs/1337826
Title:
Bash crashes with a segmentation fault on "trap 'kill 0' SIGTERM EXIT"
Status in “bash” package in Ubuntu:
New
Bug description:
Trusty's bash (4.3-7ubuntu1) crashes with a segmentation fault on the
following trap statement:
trap 'kill 0' SIGTERM EXIT
Apport doesn't react to this crash and so I wasn't able to submit this
bug via Apport. :-/
$ dpkg-query --show --showformat '${Package}\t${Version}\t${Architecture}\n'
bash
bash 4.3-7ubuntu1 amd64
$ cat test.sh
#!/bin/bash
trap 'kill 0' SIGTERM EXIT
$ ./test.sh ; echo $?
Segmentation fault (core dumped)
139
$ gdb --args /bin/bash test.sh (with nostrip and noopt bash build)
(gdb) bt
#0 0x00007ffff761e267 in kill () at ../sysdeps/unix/syscall-template.S:81
#1 0x000000000044fbf2 in kill_pid (pid=0, sig=15, group=0) at
.././jobs.c:3158
#2 0x0000000000494a09 in kill_builtin (list=0x7388a8) at
../.././builtins/../.././builtins/kill.def:186
#3 0x000000000043c7c0 in execute_builtin (builtin=0x494601 <kill_builtin>,
words=0x738908, flags=0, subshell=0) at .././execute_cmd.c:4337
#4 0x000000000043d3d0 in execute_builtin_or_function (words=0x738908,
builtin=0x494601 <kill_builtin>, var=0x0, redirects=0x0, fds_to_close=0x738808,
flags=0)
at .././execute_cmd.c:4758
#5 0x000000000043c271 in execute_simple_command (simple_command=0x73a0c8,
pipe_in=-1, pipe_out=-1, async=0, fds_to_close=0x738808) at
.././execute_cmd.c:4161
#6 0x0000000000435fe1 in execute_command_internal (command=0x73a088,
asynchronous=0, pipe_in=-1, pipe_out=-1, fds_to_close=0x738808) at
.././execute_cmd.c:787
#7 0x0000000000490123 in parse_and_execute (string=0x737588 "kill 0",
from_file=0x4e275f "exit trap", flags=21) at ../.././builtins/evalstring.c:367
#8 0x00000000004697ef in run_exit_trap () at .././trap.c:846
#9 0x000000000041ef9e in exit_shell (s=0) at .././shell.c:915
#10 0x000000000041eacf in main (argc=2, argv=0x7fffffffdef8,
env=0x7fffffffdf10) at .././shell.c:756
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