As a followup to my report of firefox getting stuck in 3.0-rc1, here's the problem repeated on -rc3. top(1) can produce the process status, but "ps axf" hangs before printing anything. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2821 username 20 0 1453m 964m 18m D 0 47.8 1434:51 firefox-bin Core 2 duo, 2 GB RAM, NO_HZ=y, MZ=300, PREEMPT_VOLUNTARY=y. It's been stuck for about half an hour so far. I wasn't using Firefox when I noticed that it wasn't refreshing its window when I changed to that screen. I'm not going to reboot in case someone wants information gathered this time. INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d INFO: task firefox-bin:9560 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. firefox-bin D f4b2df58 0 9560 2793 0x00000000 f54c2cb0 00000082 00000002 f4b2df58 00000000 00000000 00000000 00000000 c14f22c0 f54c2e24 c14f22c0 00000000 00000000 b162f6a0 00000000 00000002 00000001 f59ce208 000007fb f59c7268 acb9e000 acb9e000 00000000 c10735b3 Call Trace: [<c10735b3>] ? sys_madvise+0x42b/0x46c [<c1304a2d>] ? rwsem_down_failed_common+0xa1/0xc9 [<c1304ab2>] ? call_rwsem_down_write_failed+0x6/0x8 [<c1304529>] ? down_write+0x1c/0x1e [<c107833a>] ? sys_munmap+0x18/0x35 [<c1305410>] ? sysenter_do_call+0x12/0x26 [<c1300000>] ? set_intr_gate+0xe/0x2d -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>