[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Strace and lsof do not work



Hi,

Why am I unable to strace / lsof into certain processes, even as "root" user? I am unable to find a concrete answer for this. Please assist.

========
root 14940 0.0 0.1 10380 2552 ? SN 13:02 0:00 \_ /usr/sbin/exim -q

root dedicated100 [~]# lsof -p 14940
COMMAND   PID USER   FD      TYPE DEVICE SIZE NODE NAME
exim 14940 root cwd unknown /proc/14940/cwd (readlink: Permission denied) exim 14940 root rtd unknown /proc/14940/root (readlink: Permission denied) exim 14940 root txt unknown /proc/14940/exe (readlink: Permission denied) exim 14940 root 0 unknown /proc/14940/fd/0 (readlink: Permission denied) exim 14940 root 1 unknown /proc/14940/fd/1 (readlink: Permission denied) exim 14940 root 2 unknown /proc/14940/fd/2 (readlink: Permission denied) exim 14940 root 3 unknown /proc/14940/fd/3 (readlink: Permission denied) exim 14940 root 4 unknown /proc/14940/fd/4 (readlink: Permission denied)

root dedicated100 [~]# strace -p 14940
attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted
========

--
Regards,
Vimal Kumar K

| vimalZworld.com * technomenace.com * twitter.com/vimal7370 |
| E: vimal7370 at gmail dot com             P: +919947450760 |




[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]