This is observed on 2.6.18-rc4 on SUSE 10.1 x86 on
P-IV. The volume is question was mounted from a
Windows 2003 server.
=======================================================
[ INFO: possible circular locking dependency detected
]
-------------------------------------------------------
cp/11790 is trying to acquire lock:
(iprune_mutex){--..}, at: [<c029e364>]
mutex_lock+0x19/0x20
but task is already holding lock:
(&inode->i_mutex){--..}, at: [<c029e364>]
mutex_lock+0x19/0x20
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&inode->i_mutex){--..}:
[<c012a1c0>] lock_acquire+0x56/0x73
[<c029e205>] __mutex_lock_slowpath+0xa6/0x1ec
[<c029e364>] mutex_lock+0x19/0x20
[<e3cd2b7a>] ntfs_put_inode+0x3e/0x79 [ntfs]
[<c0169ac1>] iput+0x33/0x70
[<c017738e>] inotify_unmount_inodes+0x12e/0x15f
[<c016a55c>] invalidate_inodes+0x38/0xd1
[<c01599b3>] generic_shutdown_super+0x5a/0x108
[<c0159a81>] kill_block_super+0x20/0x36
[<c0159b56>] deactivate_super+0x61/0x78
[<c016c561>] mntput_no_expire+0x44/0x78
[<c015f536>] path_release_on_umount+0x16/0x1d
[<c016d692>] sys_umount+0x1d2/0x208
[<c016d6d5>] sys_oldumount+0xd/0xf
[<c0102cfb>] syscall_call+0x7/0xb
-> #0 (iprune_mutex){--..}:
[<c012a1c0>] lock_acquire+0x56/0x73
[<c029e205>] __mutex_lock_slowpath+0xa6/0x1ec
[<c029e364>] mutex_lock+0x19/0x20
[<c016a3a2>] shrink_icache_memory+0x33/0x1b5
[<c0142b56>] shrink_slab+0xce/0x125
[<c0143385>] try_to_free_pages+0x125/0x1cc
[<c013f8a8>] __alloc_pages+0x184/0x26d
[<c013ca52>]
generic_file_buffered_write+0x15a/0x53d
[<c013d175>]
__generic_file_aio_write_nolock+0x340/0x38d
[<c013d223>] generic_file_aio_write+0x61/0xb3
[<e3d8a326>] cifs_file_aio_write+0x23/0x43
[cifs]
[<c0153bb3>] do_sync_write+0x9d/0xce
[<c0154437>] vfs_write+0xaa/0x14e
[<c015496e>] sys_write+0x3a/0x61
[<c0102cfb>] syscall_call+0x7/0xb
other info that might help us debug this:
2 locks held by cp/11790:
#0: (&inode->i_mutex){--..}, at: [<c029e364>]
mutex_lock+0x19/0x20
#1: (shrinker_rwsem){----}, at: [<c0142aa8>]
shrink_slab+0x20/0x125
stack backtrace:
[<c01033da>] show_trace_log_lvl+0x57/0x157
[<c0103a28>] show_trace+0x16/0x19
[<c0103ac9>] dump_stack+0x1a/0x1f
[<c0129551>] print_circular_bug_tail+0x59/0x64
[<c0129d6e>] __lock_acquire+0x812/0x9a3
[<c012a1c0>] lock_acquire+0x56/0x73
[<c029e205>] __mutex_lock_slowpath+0xa6/0x1ec
[<c029e364>] mutex_lock+0x19/0x20
[<c016a3a2>] shrink_icache_memory+0x33/0x1b5
[<c0142b56>] shrink_slab+0xce/0x125
[<c0143385>] try_to_free_pages+0x125/0x1cc
[<c013f8a8>] __alloc_pages+0x184/0x26d
[<c013ca52>] generic_file_buffered_write+0x15a/0x53d
[<c013d175>]
__generic_file_aio_write_nolock+0x340/0x38d
[<c013d223>] generic_file_aio_write+0x61/0xb3
[<e3d8a326>] cifs_file_aio_write+0x23/0x43 [cifs]
[<c0153bb3>] do_sync_write+0x9d/0xce
[<c0154437>] vfs_write+0xaa/0x14e
[<c015496e>] sys_write+0x3a/0x61
[<c0102cfb>] syscall_call+0x7/0xb
DWARF2 unwinder stuck at syscall_call+0x7/0xb
Leftover inexact backtrace:
[<c0103a28>] show_trace+0x16/0x19
[<c0103ac9>] dump_stack+0x1a/0x1f
[<c0129551>] print_circular_bug_tail+0x59/0x64
[<c0129d6e>] __lock_acquire+0x812/0x9a3
[<c012a1c0>] lock_acquire+0x56/0x73
[<c029e205>] __mutex_lock_slowpath+0xa6/0x1ec
[<c029e364>] mutex_lock+0x19/0x20
[<c016a3a2>] shrink_icache_memory+0x33/0x1b5
[<c0142b56>] shrink_slab+0xce/0x125
[<c0143385>] try_to_free_pages+0x125/0x1cc
[<c013f8a8>] __alloc_pages+0x184/0x26d
[<c013ca52>] generic_file_buffered_write+0x15a/0x53d
[<c013d175>]
__generic_file_aio_write_nolock+0x340/0x38d
[<c013d223>] generic_file_aio_write+0x61/0xb3
[<e3d8a326>] cifs_file_aio_write+0x23/0x43 [cifs]
[<c0153bb3>] do_sync_write+0x9d/0xce
[<c0154437>] vfs_write+0xaa/0x14e
[<c015496e>] sys_write+0x3a/0x61
[<c0102cfb>] syscall_call+0x7/0xb
More info on request.
Thanks
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