#448589 scp: Segfaults when recursivly transfering files from a La Fonera (running dropbear)

Package:
openssh-client
Source:
openssh
Description:
secure shell (SSH) client, for secure access to remote machines
Submitter:
Tobias Frost
Date:
2014-08-02 08:09:19 UTC
Severity:
normal
#448589#5
Date:
2007-10-30 09:01:11 UTC
From:
To:
Issuing e.g:

scp -r root@fonera:/sbin .
root@fonera's password:
Segmentation fault

heres the last lines of the strace, reading of the password removed.

stat64(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
read(7, root@fonera's password:
(some lines removed)
stat64("./sbin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
umask(0)                                = 022
umask(022)                              = 0
write(6, "\0", 1)                       = 1
stat64("./sbin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
read(7, Segmentation fault
"", 1)                          = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
read(7, "", 1)                          = 0
close(7)                                = 0
waitpid(10650, [{WIFEXITED(s) && WEXITSTATUS(s) == 139}], 0) = 10650
exit_group(1)                           = ?
Process 10649 detached
#448589#10
Date:
2007-11-03 13:16:40 UTC
From:
To:
* Tobias Frost:

Can you post a GDB stack trace?  You should be able to obtain this by
attaching gdb to the scp child process (with "gdb /usr/bin/scp PID")
while ssh prompts for the password.

Can you reproduce this with Debian's dropbear?
#448589#15
Date:
2007-11-12 19:14:36 UTC
From:
To:
tags 448589 moreinfo
thanks

Or even telling strace to follow child processes (since it's the
underlying ssh process that's segfaulting, not scp itself) as well as
turning on scp's own debugging might help:

  strace -f scp -vvv -r root@fonera:/sbin .

Thanks,
#448589#22
Date:
2007-11-12 22:11:25 UTC
From:
To:
RESENT, forgot to cc to the BTS.

sorry for the delay, the other mail got burried.


Here are some traces, made with
strace -ff -o scpsctrace scp -vvv -r root@fonera:/sbin .
(scptrace.434xx)

resp.
strace -f -o scpsctrace scp -vvv -r root@fonera:/sbin .

Hopefully this helps a little, I hope, I find some time soon to
recompile it with debugging symbols to get a backtrace...