tag 347695 confirmed
thanks
You can get the 'segmentation fault' message with the command:
seq 0 10000 | while read line; do /bin/echo $line; done >tmpout
And here is the stack trace for Debian's bash3.1-2:
#0 0x0807b851 in kill_pid ()
#1 0x0807bdf7 in wait_for ()
#2 0x0806dcaf in execute_command_internal ()
#3 0x0806f9b0 in execute_command ()
#4 0x080700c0 in execute_command ()
#5 0x0806ce92 in execute_command_internal ()
#6 0x0806f7c3 in execute_shell_function ()
#7 0x0806d91d in execute_command_internal ()
#8 0x08070459 in execute_command ()
#9 0x0806d036 in execute_command_internal ()
#10 0x0806f9b0 in execute_command ()
#11 0x0805e996 in reader_loop ()
#12 0x0805e4a6 in main ()
And for 3.1-2 compiled locally:
#0 0x0807a741 in cleanup_dead_jobs () at ../bash/jobs.c:816
816 if (jobs[i] && DEADJOB (i) && IS_NOTIFIED (i))
#0 0x0807a741 in cleanup_dead_jobs () at ../bash/jobs.c:816
#1 0x0807acaa in wait_for (pid=23336) at ../bash/jobs.c:2395
#2 0x0806d468 in execute_command_internal (command=0x81894e8, asynchronous=0,
pipe_in=-1, pipe_out=-1, fds_to_close=0x8189468)
at ../bash/execute_cmd.c:707
#3 0x0806f086 in execute_command (command=0x81894e8)
at ../bash/execute_cmd.c:350
#4 0x0806f7bf in execute_while_or_until (while_command=0x81895a8, type=0)
at ../bash/execute_cmd.c:2318
#5 0x0806c684 in execute_command_internal (command=0x81894c8, asynchronous=0,
pipe_in=-1, pipe_out=-1, fds_to_close=0x8189408)
at ../bash/execute_cmd.c:2264
#6 0x0806ee7b in execute_in_subshell (command=0x81894c8, asynchronous=0,
pipe_in=Variable "pipe_in" is not available.
) at ../bash/execute_cmd.c:1311
#7 0x0806cff7 in execute_command_internal (command=0x81894c8, asynchronous=0,
pipe_in=3, pipe_out=-1, fds_to_close=0x8189408)
at ../bash/execute_cmd.c:539
#8 0x0806fb4b in execute_connection (command=0x81894c8, asynchronous=0,
pipe_in=3, pipe_out=-1, fds_to_close=0x8189408)
at ../bash/execute_cmd.c:1433
#9 0x0806c841 in execute_command_internal (command=0x8189448, asynchronous=0,
pipe_in=-1, pipe_out=-1, fds_to_close=0x8189408)
at ../bash/execute_cmd.c:819
On Thu, Jan 12, 2006 at 04:45:53PM +1100, Laird Breyer wrote:
> Package: bash
> Version: 3.1-1
> Severity: normal
>
> The following command segfaults at line 4097:
>
> % seq 0 10000 | while read line; do /bin/echo $line ; done | tail -2
> 4095
> 4096
>
> The seq, echo and tail commands are for illustration only, they are
> not related to the bug. I originally discovered the bug with completely
> different commands, but the above is the simplest illustration of the bug.
>
> The segfault appears when the input reaches line 4097, and when an
> external command is invoked.
> If you use the builtin echo, the bug doesn't appear:
>
> % seq 0 10000 | while read line; do echo $line ; done | tail -2
> 9999
> 10000
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