[Bugme-new] [Bug 12487] New: lockdep report with hfsplus

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=12487

           Summary: lockdep report with hfsplus
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.29-rc1-wl-11384-g916f396-dirty
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: HFS/HFSPLUS
        AssignedTo: zippel at linux-m68k.org
        ReportedBy: johannes at sipsolutions.net


Latest working kernel version: ?
Earliest failing kernel version: this
Distribution: debian/unstable
Hardware Environment: quad powermac G5
Software Environment: ?

=============================================
[ INFO: possible recursive locking detected ]
2.6.29-rc1-wl-11384-g916f396-dirty #12
---------------------------------------------
rm/4451 is trying to acquire lock:
 (&sb->s_type->i_mutex_key#12){--..}, at: [<c0000000001b8a7c>]
.hfsplus_block_free+0x78/0x27c

but task is already holding lock:
 (&sb->s_type->i_mutex_key#12){--..}, at: [<c000000000114268>]
.vfs_unlink+0x58/0x104

other info that might help us debug this:
3 locks held by rm/4451:
 #0:  (&type->i_mutex_dir_key#6/1){--..}, at: [<c000000000116ce0>]
.do_unlinkat+0x68/0x18c
 #1:  (&sb->s_type->i_mutex_key#12){--..}, at: [<c000000000114268>]
.vfs_unlink+0x58/0x104
 #2:  (&HFSPLUS_I(inode).extents_lock){--..}, at: [<c0000000001b13b0>]
.hfsplus_file_truncate+0xf4/0x35c

stack backtrace:
Call Trace:
[c0000001c54d33b0] [c00000000000faf4] .show_stack+0x6c/0x174 (unreliable)
[c0000001c54d3460] [c0000000000855ec] .print_deadlock_bug+0x10c/0x138
[c0000001c54d3500] [c0000000000885c8] .validate_chain+0x67c/0x928
[c0000001c54d35c0] [c00000000008909c] .__lock_acquire+0x828/0x908
[c0000001c54d36c0] [c000000000089220] .lock_acquire+0xa4/0xec
[c0000001c54d3780] [c00000000041fcc0] .mutex_lock_nested+0x194/0x4c8
[c0000001c54d3890] [c0000000001b8a7c] .hfsplus_block_free+0x78/0x27c
[c0000001c54d3950] [c0000000001b103c] .hfsplus_free_extents+0x8c/0x120
[c0000001c54d3a00] [c0000000001b13fc] .hfsplus_file_truncate+0x140/0x35c
[c0000001c54d3b20] [c0000000001af8b0] .hfsplus_delete_inode+0x84/0xa4
[c0000001c54d3ba0] [c0000000001b3240] .hfsplus_unlink+0x180/0x1f0
[c0000001c54d3c80] [c0000000001142a0] .vfs_unlink+0x90/0x104
[c0000001c54d3d10] [c000000000116d5c] .do_unlinkat+0xe4/0x18c
[c0000001c54d3e30] [c000000000007554] syscall_exit+0x0/0x40


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