On Mon, Jan 07, 2002 at 07:59:35AM -0500, Anthony DeRobertis wrote: > > On Sunday, January 6, 2002, at 04:00 , Pavel Minev Penev wrote: > > >There are about 3304 proceses with sequential PIDs and names of > >"[loop7 <defunct>]", and are all zombies. > > Are you calling fork in your code? Are you calling waitpid or friends?
No fork/clone/waitpid/pthread*/exec/etc. I don't need these. As I have shown on the scheme I simply generate a password, configure a loop device, read the ext2/ext3 super-block from it and test it for the ext2/ext3 magic ID. The functions used are: open (), close (), ioctl (), read (), malloc (), free (), printf (), fprintf (). > Who's children are those? (try ps fxa) `lo_bruteforce` under X, canceled before a hang-up: $ ps fxa [snip] 3427 ? S 0:03 konsole %i %m 3428 pts/6 S 0:00 \_ /bin/bash 3443 pts/6 S 0:00 \_ -su 13060 pts/6 R 0:01 \_ ./lo_bruteforce testdev /dev/loop7 /var/tmp/lo_bruteforce.sess 13061 ? Z< 0:00 \_ [loop7 <defunct>] 13062 ? Z< 0:00 \_ [loop7 <defunct>] 13063 ? Z< 0:00 \_ [loop7 <defunct>] 13064 ? Z< 0:00 \_ [loop7 <defunct>] 13065 ? Z< 0:00 \_ [loop7 <defunct>] 13066 ? Z< 0:00 \_ [loop7 <defunct>] 13067 ? Z< 0:00 \_ [loop7 <defunct>] 13068 ? Z< 0:00 \_ [loop7 <defunct>] 13069 ? Z< 0:00 \_ [loop7 <defunct>] 13070 ? Z< 0:00 \_ [loop7 <defunct>] 13071 ? Z< 0:00 \_ [loop7 <defunct>] 13072 ? Z< 0:00 \_ [loop7 <defunct>] 13073 ? Z< 0:00 \_ [loop7 <defunct>] 13074 ? Z< 0:00 \_ [loop7 <defunct>] 13075 ? Z< 0:00 \_ [loop7 <defunct>] 13076 ? Z< 0:00 \_ [loop7 <defunct>] 13077 ? Z< 0:00 \_ [loop7 <defunct>] 13078 ? Z< 0:00 \_ [loop7 <defunct>] 13079 ? Z< 0:00 \_ [loop7 <defunct>] 13080 ? Z< 0:00 \_ [loop7 <defunct>] 13081 ? Z< 0:00 \_ [loop7 <defunct>] 13082 ? Z< 0:00 \_ [loop7 <defunct>] 13083 ? Z< 0:00 \_ [loop7 <defunct>] 13084 ? Z< 0:00 \_ [loop7 <defunct>] 13085 ? Z< 0:00 \_ [loop7 <defunct>] 13086 ? Z< 0:00 \_ [loop7 <defunct>] 13087 ? Z< 0:00 \_ [loop7 <defunct>] 13088 ? Z< 0:00 \_ [loop7 <defunct>] 13089 ? Z< 0:00 \_ [loop7 <defunct>] 13090 ? Z< 0:00 \_ [loop7 <defunct>] 13091 ? Z< 0:00 \_ [loop7 <defunct>] 13092 ? Z< 0:00 \_ [loop7 <defunct>] 13093 ? Z< 0:00 \_ [loop7 <defunct>] 13094 ? Z< 0:00 \_ [loop7 <defunct>] 13095 ? Z< 0:00 \_ [loop7 <defunct>] 13096 ? Z< 0:00 \_ [loop7 <defunct>] 13097 ? Z< 0:00 \_ [loop7 <defunct>] 13098 ? Z< 0:00 \_ [loop7 <defunct>] 13099 ? Z< 0:00 \_ [loop7 <defunct>] 13100 ? Z< 0:00 \_ [loop7 <defunct>] 13101 ? Z< 0:00 \_ [loop7 <defunct>] 13102 ? Z< 0:00 \_ [loop7 <defunct>] 13103 ? Z< 0:00 \_ [loop7 <defunct>] 13104 ? Z< 0:00 \_ [loop7 <defunct>] 13105 ? Z< 0:00 \_ [loop7 <defunct>] 13106 ? Z< 0:00 \_ [loop7 <defunct>] 13107 ? Z< 0:00 \_ [loop7 <defunct>] 13108 ? Z< 0:00 \_ [loop7 <defunct>] 13109 ? Z< 0:00 \_ [loop7 <defunct>] 13110 ? Z< 0:00 \_ [loop7 <defunct>] 13111 ? Z< 0:00 \_ [loop7 <defunct>] 13112 ? Z< 0:00 \_ [loop7 <defunct>] 13113 ? Z< 0:00 \_ [loop7 <defunct>] 13114 ? Z< 0:00 \_ [loop7 <defunct>] 13115 ? Z< 0:00 \_ [loop7 <defunct>] 13116 ? Z< 0:00 \_ [loop7 <defunct>] 13117 ? Z< 0:00 \_ [loop7 <defunct>] 13118 ? Z< 0:00 \_ [loop7 <defunct>] 13119 ? Z< 0:00 \_ [loop7 <defunct>] 13120 ? Z< 0:00 \_ [loop7 <defunct>] 13121 ? Z< 0:00 \_ [loop7 <defunct>] 13122 ? Z< 0:00 \_ [loop7 <defunct>] 13123 ? Z< 0:00 \_ [loop7 <defunct>] 13124 ? Z< 0:00 \_ [loop7 <defunct>] 13125 ? Z< 0:00 \_ [loop7 <defunct>] 13126 ? Z< 0:00 \_ [loop7 <defunct>] 13127 ? Z< 0:00 \_ [loop7 <defunct>] 13128 ? Z< 0:00 \_ [loop7 <defunct>] 13129 ? Z< 0:00 \_ [loop7 <defunct>] 13130 ? Z< 0:00 \_ [loop7 <defunct>] 13131 ? Z< 0:00 \_ [loop7 <defunct>] 13132 ? Z< 0:00 \_ [loop7 <defunct>] 13133 ? Z< 0:00 \_ [loop7 <defunct>] 13134 ? Z< 0:00 \_ [loop7 <defunct>] 13135 ? Z< 0:00 \_ [loop7 <defunct>] 13136 ? Z< 0:00 \_ [loop7 <defunct>] 13137 ? Z< 0:00 \_ [loop7 <defunct>] 13138 ? Z< 0:00 \_ [loop7 <defunct>] 13139 ? Z< 0:00 \_ [loop7 <defunct>] 13140 ? Z< 0:00 \_ [loop7 <defunct>] 13141 ? Z< 0:00 \_ [loop7 <defunct>] 13142 ? Z< 0:00 \_ [loop7 <defunct>] 13144 ? Z< 0:00 \_ [loop7 <defunct>] 13145 ? Z< 0:00 \_ [loop7 <defunct>] 13146 ? Z< 0:00 \_ [loop7 <defunct>] 13147 ? Z< 0:00 \_ [loop7 <defunct>] 13148 pts/6 R 0:00 \_ ./lo_bruteforce testdev /dev/loop7 /var/tmp/lo_bruteforce.sess [snip] I don't know why process 13148 looks like the initial 13060. I guess the hang-up is due to the kernel's inability to terminate all those zombies, since it lacks the resources. When it hangs up the above `ps fxa` picture appears, with only the last child (`./lo_bruteforce testdev /dev/loop7 /var/tmp/lo_bruteforce.sess`) missing. In addition my free RAM is 5396kB. I forgot mention before that syslog has nothing on this issue. Also under X it seems that the brute-forcer needs more time before it hangs up. "/proc/sys/kernel/threads-max" contains "6655". Thanks for the help, -- Pav -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
