Hi,

 We are running fsstress  on Yaffs2 mounted on OneNAND  

Board                 : OMAP
Kernel               : 2.6.25

All the process of fsstress goes for a hang (uninterruptible Sleep) and throws down the following repeatedly

-----------------------------------------------------------------------------------------
INFO: task fsstress:3670 blocked for more than 120 seconds.
"echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
fsstress      D c0215960     0  3670    249
[] (schedule+0x0/0x2e0) from [] (__down+0xa4/0xfc)
[] (__down+0x0/0xfc) from [] (__down_failed+0xc/0x20)
 r8:c03501c0 r7:00000000 r6:c0535360 r5:00001000 r4:c3d05000
[] (yaffs_GrossLock+0x0/0x68) from [] (yaffs_commit_write+0x9c/0x298)
 r4:c33d39e0
[] (yaffs_commit_write+0x0/0x298) from [] (generic_file_buffered_write+0x4a8/0x65c)
[] (generic_file_buffered_write+0x4/0x65c) from [] (__generic_file_aio_write_nolock+0x548/0x578)
[] (__generic_file_aio_write_nolock+0x0/0x578) from [] (generic_file_aio_write+0x84/0x100)
[] (generic_file_aio_write+0x4/0x100) from [] (do_sync_write+0xc0/0x110)
[] (do_sync_write+0x0/0x110) from [] (vfs_write+0xbc/0xf4)
 r9:c3d3e000 r8:00000000 r7:c3d3ff78 r6:4020a940 r5:c33d39e0
r4:000159b0
[] (vfs_write+0x0/0xf4) from [] (sys_write+0x4c/0x78)
 r7:00078a36 r6:c3d3ff78 r5:c33d39e0 r4:c33d3a00
[] (sys_write+0x0/0x78) from [] (ret_fast_syscall+0x0/0x2c)
 r8:c0023b84 r7:00000004 r6:beab4b0c r5:beab4b04 r4:034f59af

INFO: task fsstress:3671 blocked for more than 120 seconds.
"echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
fsstress      D c0215960     0  3671   3028
[] (schedule+0x0/0x2e0) from [] (__down+0xa4/0xfc)
[] (__down+0x0/0xfc) from [] (__down_failed+0xc/0x20)
 r8:c035cb80 r7:00000000 r6:c0458a2c r5:00001000 r4:c3d05000
[] (yaffs_GrossLock+0x0/0x68) from [] (yaffs_commit_write+0x9c/0x298)
 r4:c33d3620
[] (yaffs_commit_write+0x0/0x298) from [] (generic_file_buffered_write+0x4a8/0x65c)
[] (generic_file_buffered_write+0x4/0x65c) from [] (__generic_file_aio_write_nolock+0x548/0x578)
[] (__generic_file_aio_write_nolock+0x0/0x578) from [] (generic_file_aio_write+0x84/0x100)
[] (generic_file_aio_write+0x4/0x100) from [] (do_sync_write+0xc0/0x110)
[] (do_sync_write+0x0/0x110) from [] (vfs_write+0xbc/0xf4)
 r9:c3f82000 r8:00000000 r7:c3f83f78 r6:4020b160 r5:c33d3620
r4:0001c71e
[] (vfs_write+0x0/0xf4) from [] (sys_write+0x4c/0x78)
 r7:00194a95 r6:c3f83f78 r5:c33d3620 r4:c33d3640
[] (sys_write+0x0/0x78) from [] (ret_fast_syscall+0x0/0x2c)
 r8:c0023b84 r7:00000004 r6:be8f7b0c r5:be8f7b04 r4:15bbc71d

INFO: task fsstress:3672 blocked for more than 120 seconds.
"echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
fsstress      D c0215960     0  3672   3028
[] (schedule+0x0/0x2e0) from [] (__down+0xa4/0xfc)
[] (__down+0x0/0xfc) from [] (__down_failed+0xc/0x20)
 r8:c3e31f2c r7:c3d05000 r6:c0a83118 r5:c1c8faac r4:c3d05000
[] (yaffs_GrossLock+0x0/0x68) from [] (yaffs_lookup+0x28/0xf8)
 r4:fffffff4
[] (yaffs_lookup+0x0/0xf8) from [] (__lookup_hash+0xfc/0x118)
[] (__lookup_hash+0x0/0x118) from [] (lookup_hash+0x3c/0x48)
[] (lookup_hash+0x0/0x48) from [] (lookup_create+0x54/0x98)
 r4:c3e31f24
[] (lookup_create+0x0/0x98) from [] (sys_symlinkat+0x70/0xf4)
 r5:ffffff9c r4:00000000
[] (sys_symlinkat+0x0/0xf4) from [] (sys_symlink+0x18/0x1c)
 r8:c0023b84 r7:00000053 r6:000105c0 r5:4001e000 r4:be8f7db4
[] (sys_symlink+0x0/0x1c) from [] (ret_fast_syscall+0x0/0x2c)

INFO: task fsstress:3673 blocked for more than 120 seconds.
"echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
fsstress      D c0215960     0  3673    249
[] (schedule+0x0/0x2e0) from [] (__down+0xa4/0xfc)
[] (__down+0x0/0xfc) from [] (__down_failed+0xc/0x20)
 r8:c3f69ecc r7:c3d05000 r6:c27fe834 r5:c1cebddc r4:c3d05000
[] (yaffs_GrossLock+0x0/0x68) from [] (yaffs_lookup+0x28/0xf8)
 r4:fffffff4
[] (yaffs_lookup+0x0/0xf8) from [] (do_lookup+0xbc/0x18c)
[] (do_lookup+0x0/0x18c) from [] (__link_path_walk+0x390/0xf8c)
[] (__link_path_walk+0x0/0xf8c) from [] (path_walk+0x94/0x13c)
[] (path_walk+0x0/0x13c) from [] (do_path_lookup+0x150/0x174)
 r7:00000000 r6:c3c2bb20 r5:c3f69ecc r4:c3c2bb24
[] (do_path_lookup+0x0/0x174) from [] (sys_renameat+0x7c/0x1d8)
[] (sys_renameat+0x0/0x1d8) from [] (sys_rename+0x24/0x28)
[] (sys_rename+0x0/0x28) from [] (ret_fast_syscall+0x0/0x2c)

INFO: task fsstress:3674 blocked for more than 120 seconds.
"echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
fsstress      D c0215960     0  3674    249
[] (schedule+0x0/0x2e0) from [] (__down+0xa4/0xfc)
[] (__down+0x0/0xfc) from [] (__down_failed+0xc/0x20)
 r8:c0305640 r7:00000000 r6:c07204d8 r5:00001000 r4:c3d05000
[] (yaffs_GrossLock+0x0/0x68) from [] (yaffs_commit_write+0x9c/0x298)
 r4:c33d36c0
[] (yaffs_commit_write+0x0/0x298) from [] (generic_file_buffered_write+0x4a8/0x65c)
[] (generic_file_buffered_write+0x4/0x65c) from [] (__generic_file_aio_write_nolock+0x548/0x578)
[] (__generic_file_aio_write_nolock+0x0/0x578) from [] (generic_file_aio_write+0x84/0x100)
[] (generic_file_aio_write+0x4/0x100) from [] (do_sync_write+0xc0/0x110)
[] (do_sync_write+0x0/0x110) from [] (vfs_write+0xbc/0xf4)
 r9:c3f1a000 r8:00000000 r7:c3f1bf78 r6:4020c4b8 r5:c33d36c0
r4:0001e71a
[] (vfs_write+0x0/0xf4) from [] (sys_write+0x4c/0x78)
 r7:000dd9e1 r6:c3f1bf78 r5:c33d36c0 r4:c33d36e0
[] (sys_write+0x0/0x78) from [] (ret_fast_syscall+0x0/0x2c)
 r8:c0023b84 r7:00000004 r6:beab4b0c r5:beab4b04 r4:44f5e719

--------------------------------------------------------------------------------------

Can anyone Look in and Help.

With Regards

 Moorthy
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