Re: [Crash-utility] crash -s may have some problem

Hi: When I use crash, I encounter this strange thing. Executing "vm 1" under crash, I see: PID: 1 TASK: e0000001ff908000 CPU: 0 COMMAND: "init" MM PGD RSS TOTAL_VM e000000185baac80 e000000185ca8000 256k 4464k VMA START END FLAGS FILE e000000185abc878 0 4000 84011 e000000185abca88 2000000000000000 200000000003c000 875 /lib/ld-2.5.so e000000185abcb38 2000000000048000 2000000000050000 100873 /lib/ld-2.5.so e000000185abfaa8 2000000000060000 20000000000e0000 75 /lib/libsepol.so.1 e000000185abf738 20000000000e0000 20000000000ec000 70 /lib/libsepol.so.1 e000000185abf948 20000000000ec000 20000000000f0000 100073 /lib/libsepol.so.1 e000000185abf9f8 20000000000f0000 20000000000fc000 100073 e000000185abfb58 20000000000fc000 2000000000124000 75 /lib/libselinux.so.1 e000000185abf898 2000000000124000 2000000000130000 70 /lib/libselinux.so.1 e000000185abf5d8 2000000000130000 2000000000134000 100073 /lib/libselinux.so.1 e000000185abf688 2000000000134000 2000000000138000 100073 e000000185abd218 2000000000138000 20000000003a0000 75 /lib/libc-2.5.so e000000185abd168 20000000003a0000 20000000003ac000 70 /lib/libc-2.5.so e000000185abc458 20000000003ac000 20000000003b4000 100073 /lib/libc-2.5.so e000000185abc718 20000000003b4000 20000000003b8000 100073 e000000185abd798 20000000003b8000 20000000003c0000 75 /lib/libdl-2.5.so e000000185abc508 20000000003c0000 20000000003cc000 70 /lib/libdl-2.5.so e000000185abd848 20000000003cc000 20000000003d0000 100073 /lib/libdl-2.5.so e000000185abd8f8 20000000003d0000 20000000003e8000 100073 e000000185abc928 4000000000000000 4000000000014000 1875 /sbin/init But when I execute "vm 1" under crash -s, the second part is missing. [root@rhel51rc2 crash-4.0-6.1]# crash -s crash> vm 1 PID: 1 TASK: e0000001ff908000 CPU: 0 COMMAND: "init" MM PGD RSS TOTAL_VM 0 0 0k 0k I think is caused by that IS_ZOMBIE(task) in memory.c failed. And this failure is caused by that the value of _ZOMBIE_ has not been initialized. the initialization of _ZOMBIE_ is in initialize_task_struct(), called by show_context() finally. But when executing "crash -s", it's not called. I added the following code in memory.c before using _ZOMBIE_, but I don't know whether it's good, it need to change initialize_task_state() to nonstatic and use TASK_STATE_UNINITIALIZED which is now in task.c only. " if (_ZOMBIE_ == TASK_STATE_UNINITIALIZED) initialize_task_state(); " Best Regards