I have tried to strace -p 18768, but with no success, even as root:
root@quad:~# strace -p 18768
attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted
I also tried to send SIGCONT ( kill -18 ) to 18768, but with no success.
It seems that the firefox-bin process is waiting for the plugin-container, which is a stopped process, thus waiting forever.
michael@quad:~$ strace -p 18727
Process 18727 attached - interrupt to quit
futex(0xa2cffbd8, FUTEX_WAIT, 18767, NULL
When exiting firefox there should be a timeout waiting for plugins and if the plugin-container or any other spawned process is detected in a stopped state, it should be just killed with SIGKILL.
I am suffering from the same problem.
Today again, when I logged out from the computer, it told me about the hanging firefox-bin process, but I just logged out anyway.
This left two processes bumming around.
18727 ? Sl 0:25 /usr/lib/ firefox- 3.6.24/ firefox- bin firefox- 3.6.24/ plugin- container /usr/lib/ adobe-flashplug in/libflashplay er.so 18727 plugin true
18768 ? Tl 0:04 /usr/lib/
I have tried to strace -p 18768, but with no success, even as root:
root@quad:~# strace -p 18768 PTRACE_ ATTACH, ...): Operation not permitted
attach: ptrace(
I also tried to send SIGCONT ( kill -18 ) to 18768, but with no success.
It seems that the firefox-bin process is waiting for the plugin-container, which is a stopped process, thus waiting forever.
michael@quad:~$ strace -p 18727
Process 18727 attached - interrupt to quit
futex(0xa2cffbd8, FUTEX_WAIT, 18767, NULL
When exiting firefox there should be a timeout waiting for plugins and if the plugin-container or any other spawned process is detected in a stopped state, it should be just killed with SIGKILL.