I have been seeing a lot of process hangs/loops on our cluster. The processes end up in the zombie state and are not killable, yet they are consuming all of the cpu cycles on the executing core. These processes all seem to be hung up in the kernel with pvfs calls. Is there a way to gracefully get out of this situation? Thus far the only solution has been to reboot. I wish there was a way to signal the kernel module to stop whatever it is it’s doing in this loop.
>> Dec 10 10:01:06 node0803 kernel: SysRq : Show CPUs >> Dec 10 10:01:06 node0803 kernel: CPU3: >> Dec 10 10:01:06 node0803 kernel: ffff81010efbff48 0000000000000000 >> ffff8103746d5b40 ffffffff801aee62 >> Dec 10 10:01:06 node0803 kernel: 0000000000000000 0000000000000000 >> 0000000000000000 ffffffff801aee91 >> Dec 10 10:01:06 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> ffff8103746d5c08 ffff81010ef90000 >> Dec 10 10:01:06 node0803 kernel: Call Trace: >> Dec 10 10:01:06 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:06 node0803 kernel: <EOI> [<ffffffff80064b20>] >> _spin_unlock_irqrestore+0x8/0x9 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8001ca65>] >> __mod_timer+0xb0/0xbe >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80063876>] >> schedule_timeout+0x85/0xad >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80096fee>] >> process_timeout+0x0/0x5 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b5b54>] >> :pvfs2:wait_for_cancellation_downcall+0xad/0x113 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:06 node0803 kernel: >> Dec 10 10:01:06 node0803 kernel: CPU5: >> Dec 10 10:01:06 node0803 kernel: ffff81043fc47f48 0000000000000000 >> ffff8103bb96dbd0 ffffffff801aee62 >> Dec 10 10:01:06 node0803 kernel: 0000000000000000 0000000000000000 >> 0000000000000000 ffffffff801aee91 >> Dec 10 10:01:06 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> ffff8101a1ee2ab8 0000000000000004 >> Dec 10 10:01:06 node0803 kernel: Call Trace: >> Dec 10 10:01:06 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:06 node0803 kernel: <EOI> [<ffffffff883fb0b7>] >> :ipmi_si:port_inb+0x0/0xf >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80064a58>] _spin_lock+0x3/0xa >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b5b16>] >> :pvfs2:wait_for_cancellation_downcall+0x6f/0x113 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:06 node0803 kernel: >> Dec 10 10:01:06 node0803 kernel: CPU1: >> Dec 10 10:01:06 node0803 kernel: ffff8101e71d5e58 0000000000000000 >> 0000000000000000 0000000000000000 >> Dec 10 10:01:06 node0803 kernel: ffffffff801aee62 0000000000000000 >> 0000000000000006 ffffffff801aee91 >> Dec 10 10:01:06 node0803 kernel: 0000000000000000 ffffffff80093aea >> ffffffff8032ddc0 0000000000000077 >> Dec 10 10:01:06 node0803 kernel: Call Trace: >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aee62>] showacpu+0x0/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80093aea>] >> on_each_cpu+0x19/0x22 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aed97>] >> __handle_sysrq+0x90/0x121 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80107395>] >> write_sysrq_trigger+0x2a/0x32 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8001691b>] >> vfs_write+0xce/0x174 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff800171d3>] sys_write+0x45/0x6e >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:06 node0803 kernel: >> Dec 10 10:01:06 node0803 kernel: CPU7: >> Dec 10 10:01:06 node0803 kernel: ffff81043fccff48 0000000000000000 >> ffff81020dd19b80 ffffffff801aee62 >> Dec 10 10:01:06 node0803 kernel: 0000000000000000 0000000000000000 >> 0000000000000000 ffffffff801aee91 >> Dec 10 10:01:06 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> 0000000199986190 0000000199986190 >> Dec 10 10:01:06 node0803 kernel: Call Trace: >> Dec 10 10:01:06 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:06 node0803 kernel: <EOI> [<ffffffff8005bae0>] >> del_timer_sync+0x0/0x16 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80063883>] >> schedule_timeout+0x92/0xad >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80096fee>] >> process_timeout+0x0/0x5 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b5b54>] >> :pvfs2:wait_for_cancellation_downcall+0xad/0x113 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:06 node0803 kernel: >> Dec 10 10:01:06 node0803 kernel: CPU2: >> Dec 10 10:01:06 node0803 kernel: ffff81010ef6bf48 0000000000000000 >> ffff81037fad3b40 ffffffff801aee62 >> Dec 10 10:01:06 node0803 kernel: 0000000000000000 0000000000000000 >> 0000000000000000 ffffffff801aee91 >> Dec 10 10:01:06 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> ffff81037fad3c08 0000000199986190 >> Dec 10 10:01:06 node0803 kernel: Call Trace: >> Dec 10 10:01:06 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:06 node0803 kernel: <EOI> [<ffffffff80064b20>] >> _spin_unlock_irqrestore+0x8/0x9 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8004b256>] >> try_to_del_timer_sync+0x51/0x5a >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005baec>] >> del_timer_sync+0xc/0x16 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80063883>] >> schedule_timeout+0x92/0xad >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80096fee>] >> process_timeout+0x0/0x5 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b5b54>] >> :pvfs2:wait_for_cancellation_downcall+0xad/0x113 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8003bc80>] >> remove_wait_queue+0x1c/0x2c >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885b5d7c>] >> :pvfs2:wait_for_matching_downcall+0x1c2/0x1d5 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:06 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:06 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:06 node0803 kernel: >> Dec 10 10:01:06 node0803 kernel: CPU4: >> Dec 10 10:01:06 node0803 kernel: ffff81010eff3f48 0000000000000000 >> ffff8103ee517b40 ffffffff801aee62 >> Dec 10 10:01:06 node0803 kernel: 0000000000000000 0000000000000000 >> 0000000000000000 ffffffff801aee91 >> Dec 10 10:01:08 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> ffff8103ee517c08 0000000199986190 >> Dec 10 10:01:08 node0803 kernel: Call Trace: >> Dec 10 10:01:08 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:08 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:08 node0803 kernel: <EOI> [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80064b20>] >> _spin_unlock_irqrestore+0x8/0x9 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8004b256>] >> try_to_del_timer_sync+0x51/0x5a >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005baec>] >> del_timer_sync+0xc/0x16 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80063883>] >> schedule_timeout+0x92/0xad >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80096fee>] >> process_timeout+0x0/0x5 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b5b54>] >> :pvfs2:wait_for_cancellation_downcall+0xad/0x113 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8003bc80>] >> remove_wait_queue+0x1c/0x2c >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b5d7c>] >> :pvfs2:wait_for_matching_downcall+0x1c2/0x1d5 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:08 node0803 kernel: >> Dec 10 10:01:08 node0803 kernel: CPU0: >> Dec 10 10:01:08 node0803 kernel: ffffffff8043df48 0000000000000000 >> ffff810253083ab0 ffffffff801aee62 >> Dec 10 10:01:08 node0803 kernel: 0000000000000000 0000000000000000 >> ffff810001004420 ffffffff801aee91 >> Dec 10 10:01:08 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> ffff8103c97f37e0 ffff8103c97f3818 >> Dec 10 10:01:08 node0803 kernel: Call Trace: >> Dec 10 10:01:08 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:08 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:08 node0803 kernel: <EOI> [<ffffffff80063019>] >> thread_return+0xb3/0xfe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80062486>] >> __sched_text_start+0xf6/0xbd6 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8003da82>] >> lock_timer_base+0x1b/0x3c >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8001ca65>] >> __mod_timer+0xb0/0xbe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8006387b>] >> schedule_timeout+0x8a/0xad >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80096fee>] >> process_timeout+0x0/0x5 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b5b54>] >> :pvfs2:wait_for_cancellation_downcall+0xad/0x113 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> Dec 10 10:01:08 node0803 kernel: >> Dec 10 10:01:08 node0803 kernel: CPU6: >> Dec 10 10:01:08 node0803 kernel: ffff81043fc7bf48 0000000000000000 >> ffff8103e36c9ab0 ffffffff801aee62 >> Dec 10 10:01:08 node0803 kernel: 0000000000000000 0000000000000000 >> ffff810001036b20 ffffffff801aee91 >> Dec 10 10:01:08 node0803 kernel: ffffffff8005e2fc ffffffff80022da9 >> ffff8102dea33100 ffff8102dea33138 >> Dec 10 10:01:08 node0803 kernel: Call Trace: >> Dec 10 10:01:08 node0803 kernel: <IRQ> [<ffffffff801aee62>] >> showacpu+0x0/0x3b >> Dec 10 10:01:08 node0803 kernel: [<ffffffff801aee91>] showacpu+0x2f/0x3b >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005e2fc>] >> call_softirq+0x1c/0x28 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80022da9>] >> smp_call_function_interrupt+0x57/0x75 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005dc22>] >> call_function_interrupt+0x66/0x6c >> Dec 10 10:01:08 node0803 kernel: <EOI> [<ffffffff80013a31>] >> tcp_poll+0x0/0x12f >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80063019>] >> thread_return+0xb3/0xfe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80062486>] >> __sched_text_start+0xf6/0xbd6 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8003da82>] >> lock_timer_base+0x1b/0x3c >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8001ca65>] >> __mod_timer+0xb0/0xbe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8006387b>] >> schedule_timeout+0x8a/0xad >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80096fee>] >> process_timeout+0x0/0x5 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b5b54>] >> :pvfs2:wait_for_cancellation_downcall+0xad/0x113 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8008c3bd>] >> default_wake_function+0x0/0xe >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885b600f>] >> :pvfs2:service_operation+0x1e0/0x2a6 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885a92ed>] >> :pvfs2:pvfs2_cancel_op_in_progress+0x6b/0x97 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885ad58f>] >> :pvfs2:wait_for_direct_io+0x1c7/0x3de >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885aebf8>] >> :pvfs2:do_readv_writev+0x5c5/0x6c3 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8002ade0>] >> get_signal_to_deliver+0x19b/0x45a >> Dec 10 10:01:08 node0803 kernel: [<ffffffff885affcf>] >> :pvfs2:pvfs2_file_read+0xc9/0xd8 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8000b695>] vfs_read+0xcb/0x171 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff80011b72>] sys_read+0x45/0x6e >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005d19f>] >> sysret_signal+0x1c/0x27 >> Dec 10 10:01:08 node0803 kernel: [<ffffffff8005d116>] >> system_call+0x7e/0x83 >> -Randy
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