I'm seeing the same thing 10.04 64 bit.
[773760.910061] INFO: task tar:14596 blocked for more than 120 seconds. [773760.926430] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [773760.958906] tar D 00000000ffffffff 0 14596 14568 0x00000004 [773760.958912] ffff8802b217dc48 0000000000000082 0000000000015bc0 0000000000015bc0 [773760.958917] ffff8801f5fc1ab0 ffff8802b217dfd8 0000000000015bc0 ffff8801f5fc16f0 [773760.958921] 0000000000015bc0 ffff8802b217dfd8 0000000000015bc0 ffff8801f5fc1ab0 [773760.958925] Call Trace: [773760.958951] [<ffffffffa01b2280>] ? nfs_wait_bit_uninterruptible+0x0/0x20 [nfs] [773760.958960] [<ffffffff815555f7>] io_schedule+0x47/0x70 [773760.958972] [<ffffffffa01b228e>] nfs_wait_bit_uninterruptible+0xe/0x20 [nfs] [773760.958976] [<ffffffff81555c1f>] __wait_on_bit+0x5f/0x90 [773760.958988] [<ffffffffa01b2280>] ? nfs_wait_bit_uninterruptible+0x0/0x20 [nfs] [773760.958993] [<ffffffff81555cc8>] out_of_line_wait_on_bit+0x78/0x90 [773760.958999] [<ffffffff81084fe0>] ? wake_bit_function+0x0/0x40 [773760.959011] [<ffffffffa01b226f>] nfs_wait_on_request+0x2f/0x40 [nfs] [773760.959024] [<ffffffffa01b666f>] nfs_wait_on_requests_locked+0x7f/0xd0 [nfs] [773760.959037] [<ffffffffa01b7aae>] nfs_sync_mapping_wait+0x9e/0x1a0 [nfs] [773760.959050] [<ffffffffa01b7e99>] nfs_write_mapping+0x79/0xb0 [nfs] [773760.959062] [<ffffffffa01b7f07>] nfs_wb_all+0x17/0x20 [nfs] [773760.959073] [<ffffffffa01a6e9a>] nfs_do_fsync+0x2a/0x60 [nfs] [773760.959084] [<ffffffffa01a70e5>] nfs_file_flush+0x75/0xa0 [nfs] [773760.959089] [<ffffffff81140f2c>] filp_close+0x3c/0x90 [773760.959092] [<ffffffff81141037>] sys_close+0xb7/0x120 [773760.959098] [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
I'm seeing the same thing 10.04 64 bit.
[773760.910061] INFO: task tar:14596 blocked for more than 120 seconds. kernel/ hung_task_ timeout_ secs" disables this message. 280>] ? nfs_wait_ bit_uninterrupt ible+0x0/ 0x20 [nfs] 5f7>] io_schedule+ 0x47/0x70 28e>] nfs_wait_ bit_uninterrupt ible+0xe/ 0x20 [nfs] c1f>] __wait_ on_bit+ 0x5f/0x90 280>] ? nfs_wait_ bit_uninterrupt ible+0x0/ 0x20 [nfs] cc8>] out_of_ line_wait_ on_bit+ 0x78/0x90 fe0>] ? wake_bit_ function+ 0x0/0x40 26f>] nfs_wait_ on_request+ 0x2f/0x40 [nfs] 66f>] nfs_wait_ on_requests_ locked+ 0x7f/0xd0 [nfs] aae>] nfs_sync_ mapping_ wait+0x9e/ 0x1a0 [nfs] e99>] nfs_write_ mapping+ 0x79/0xb0 [nfs] f07>] nfs_wb_ all+0x17/ 0x20 [nfs] e9a>] nfs_do_ fsync+0x2a/ 0x60 [nfs] 0e5>] nfs_file_ flush+0x75/ 0xa0 [nfs] f2c>] filp_close+ 0x3c/0x90 037>] sys_close+ 0xb7/0x120 1b2>] system_ call_fastpath+ 0x16/0x1b
[773760.926430] "echo 0 > /proc/sys/
[773760.958906] tar D 00000000ffffffff 0 14596 14568 0x00000004
[773760.958912] ffff8802b217dc48 0000000000000082 0000000000015bc0 0000000000015bc0
[773760.958917] ffff8801f5fc1ab0 ffff8802b217dfd8 0000000000015bc0 ffff8801f5fc16f0
[773760.958921] 0000000000015bc0 ffff8802b217dfd8 0000000000015bc0 ffff8801f5fc1ab0
[773760.958925] Call Trace:
[773760.958951] [<ffffffffa01b2
[773760.958960] [<ffffffff81555
[773760.958972] [<ffffffffa01b2
[773760.958976] [<ffffffff81555
[773760.958988] [<ffffffffa01b2
[773760.958993] [<ffffffff81555
[773760.958999] [<ffffffff81084
[773760.959011] [<ffffffffa01b2
[773760.959024] [<ffffffffa01b6
[773760.959037] [<ffffffffa01b7
[773760.959050] [<ffffffffa01b7
[773760.959062] [<ffffffffa01b7
[773760.959073] [<ffffffffa01a6
[773760.959084] [<ffffffffa01a7
[773760.959089] [<ffffffff81140
[773760.959092] [<ffffffff81141
[773760.959098] [<ffffffff81013