Attachment 295184 Details for Bug 433329 – lockdep message on "losetup"

lockdep message on "losetup"

lock.txt (text/plain), 10.57 KB, created by Tom London on 2008-02-18 17:52:21 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Tom London

Created: 2008-02-18 17:52:21 UTC

Size: 10.57 KB

patch

obsolete

>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: =======================================================
>Feb 17 17:22:15 localhost kernel: [ INFO: possible circular locking dependency detected ]
>Feb 17 17:22:15 localhost kernel: 2.6.25-0.50.rc2.fc9 #1
>Feb 17 17:22:15 localhost kernel: -------------------------------------------------------
>Feb 17 17:22:15 localhost kernel: losetup/3515 is trying to acquire lock:
>Feb 17 17:22:15 localhost kernel:  (&bdev->bd_mutex){--..}, at: [<c04aa5e2>] __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: but task is already holding lock:
>Feb 17 17:22:15 localhost kernel:  (&lo->lo_ctl_mutex){--..}, at: [<f8ef1087>] lo_ioctl+0x3d/0xa01 [loop]
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: which lock already depends on the new lock.
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: the existing dependency chain (in reverse order) is:
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: -> #1 (&lo->lo_ctl_mutex){--..}:
>Feb 17 17:22:15 localhost kernel:        [<c04458f7>] __lock_acquire+0xa7c/0xbf4
>Feb 17 17:22:15 localhost kernel:        [<f8ef01e1>] lo_open+0x23/0x33 [loop]
>Feb 17 17:22:15 localhost kernel:        [<c0445ad9>] lock_acquire+0x6a/0x90
>Feb 17 17:22:15 localhost kernel:        [<f8ef01e1>] lo_open+0x23/0x33 [loop]
>Feb 17 17:22:15 localhost kernel:        [<c0638e11>] mutex_lock_nested+0xdb/0x271
>Feb 17 17:22:15 localhost kernel:        [<f8ef01e1>] lo_open+0x23/0x33 [loop]
>Feb 17 17:22:15 localhost kernel:        [<f8ef01e1>] lo_open+0x23/0x33 [loop]
>Feb 17 17:22:15 localhost kernel:        [<c0638f9f>] mutex_lock_nested+0x269/0x271
>Feb 17 17:22:15 localhost kernel:        [<f8ef01e1>] lo_open+0x23/0x33 [loop]
>Feb 17 17:22:15 localhost kernel:        [<c04aa9c8>] do_open+0x97/0x281
>Feb 17 17:22:15 localhost kernel:        [<c04aabda>] blkdev_open+0x28/0x51
>Feb 17 17:22:15 localhost kernel:        [<c0488038>] __dentry_open+0xcf/0x185
>Feb 17 17:22:15 localhost kernel:        [<c048815f>] nameidata_to_filp+0x1f/0x33
>Feb 17 17:22:15 localhost kernel:        [<c04aabb2>] blkdev_open+0x0/0x51
>Feb 17 17:22:15 localhost kernel:        [<c04881a1>] do_filp_open+0x2e/0x35
>Feb 17 17:22:15 localhost kernel:        [<c0487f53>] get_unused_fd_flags+0xc9/0xd3
>Feb 17 17:22:15 localhost kernel:        [<c063a4dd>] _spin_unlock+0x1d/0x20
>Feb 17 17:22:15 localhost kernel:        [<c0487f53>] get_unused_fd_flags+0xc9/0xd3
>Feb 17 17:22:15 localhost kernel:        [<c04881e8>] do_sys_open+0x40/0xb5
>Feb 17 17:22:15 localhost kernel:        [<c0488289>] sys_open+0x16/0x18
>Feb 17 17:22:15 localhost kernel:        [<c0405d66>] syscall_call+0x7/0xb
>Feb 17 17:22:15 localhost kernel:        [<ffffffff>] 0xffffffff
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: -> #0 (&bdev->bd_mutex){--..}:
>Feb 17 17:22:15 localhost kernel:        [<c0444c38>] print_circular_bug_tail+0x2e/0x66
>Feb 17 17:22:15 localhost kernel:        [<c0444b88>] print_circular_bug_header+0xa6/0xb1
>Feb 17 17:22:15 localhost kernel:        [<c0445816>] __lock_acquire+0x99b/0xbf4
>Feb 17 17:22:15 localhost kernel:        [<c0445ad9>] lock_acquire+0x6a/0x90
>Feb 17 17:22:15 localhost kernel:        [<c04aa5e2>] __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel:        [<c0638e11>] mutex_lock_nested+0xdb/0x271
>Feb 17 17:22:15 localhost kernel:        [<c04aa5e2>] __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel:last message repeated 2 times
>Feb 17 17:22:15 localhost kernel:        [<c04aa6f7>] blkdev_put+0xa/0xc
>Feb 17 17:22:15 localhost kernel:        [<c04aa721>] blkdev_close+0x28/0x2b
>Feb 17 17:22:15 localhost kernel:        [<c048a688>] __fput+0xb3/0x157
>Feb 17 17:22:15 localhost kernel:        [<c048a743>] fput+0x17/0x19
>Feb 17 17:22:15 localhost kernel:        [<f8ef0bde>] loop_clr_fd+0x159/0x16d [loop]
>Feb 17 17:22:15 localhost kernel:        [<f8ef168a>] lo_ioctl+0x640/0xa01 [loop]
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c040a0ae>] sched_clock+0x8/0xb
>Feb 17 17:22:15 localhost kernel:        [<c04431f1>] lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:        [<c04d7641>] avc_has_perm_noaudit+0x3a1/0x3dc
>Feb 17 17:22:15 localhost kernel:        [<c04d765e>] avc_has_perm_noaudit+0x3be/0x3dc
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c04453b8>] __lock_acquire+0x53d/0xbf4
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c04453b8>] __lock_acquire+0x53d/0xbf4
>Feb 17 17:22:15 localhost kernel:        [<c04431f1>] lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c04453b8>] __lock_acquire+0x53d/0xbf4
>Feb 17 17:22:15 localhost kernel:        [<c04d7641>] avc_has_perm_noaudit+0x3a1/0x3dc
>Feb 17 17:22:15 localhost kernel:        [<c040a37c>] native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:        [<c040a0ae>] sched_clock+0x8/0xb
>Feb 17 17:22:15 localhost kernel:        [<c04431f1>] lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:        [<c04d7641>] avc_has_perm_noaudit+0x3a1/0x3dc
>Feb 17 17:22:15 localhost kernel:        [<c04f1df9>] blkdev_driver_ioctl+0x49/0x5b
>Feb 17 17:22:15 localhost kernel:        [<c04f25b7>] blkdev_ioctl+0x7ac/0x7c9
>Feb 17 17:22:15 localhost kernel:        [<c04431f1>] lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:        [<c04d952f>] inode_has_perm+0x5b/0x65
>Feb 17 17:22:15 localhost kernel:        [<c0483bf7>] check_object+0x111/0x185
>Feb 17 17:22:15 localhost kernel:        [<c04d9909>] file_has_perm+0x7f/0x88
>Feb 17 17:22:15 localhost kernel:        [<c04aa0c8>] block_ioctl+0x16/0x1b
>Feb 17 17:22:15 localhost kernel:        [<c04aa0b2>] block_ioctl+0x0/0x1b
>Feb 17 17:22:15 localhost kernel:        [<c0493dba>] vfs_ioctl+0x22/0x69
>Feb 17 17:22:15 localhost kernel:        [<c049403a>] do_vfs_ioctl+0x239/0x24c
>Feb 17 17:22:15 localhost kernel:        [<c04d9a95>] selinux_file_ioctl+0xa8/0xab
>Feb 17 17:22:15 localhost kernel:        [<c049408d>] sys_ioctl+0x40/0x5b
>Feb 17 17:22:15 localhost kernel:        [<c0405d66>] syscall_call+0x7/0xb
>Feb 17 17:22:15 localhost kernel:        [<ffffffff>] 0xffffffff
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: other info that might help us debug this:
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: 1 lock held by losetup/3515:
>Feb 17 17:22:15 localhost kernel:  #0:  (&lo->lo_ctl_mutex){--..}, at: [<f8ef1087>] lo_ioctl+0x3d/0xa01 [loop]
>Feb 17 17:22:15 localhost kernel: 
>Feb 17 17:22:15 localhost kernel: stack backtrace:
>Feb 17 17:22:15 localhost kernel: Pid: 3515, comm: losetup Not tainted 2.6.25-0.50.rc2.fc9 #1
>Feb 17 17:22:15 localhost kernel:  [<c0444c65>] print_circular_bug_tail+0x5b/0x66
>Feb 17 17:22:15 localhost kernel:  [<c0444b88>] ? print_circular_bug_header+0xa6/0xb1
>Feb 17 17:22:15 localhost kernel:  [<c0445816>] __lock_acquire+0x99b/0xbf4
>Feb 17 17:22:15 localhost kernel:  [<c0445ad9>] lock_acquire+0x6a/0x90
>Feb 17 17:22:15 localhost kernel:  [<c04aa5e2>] ? __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel:  [<c0638e11>] mutex_lock_nested+0xdb/0x271
>Feb 17 17:22:15 localhost kernel:  [<c04aa5e2>] ? __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel:  [<c04aa5e2>] ? __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel:  [<c04aa5e2>] __blkdev_put+0x24/0x12f
>Feb 17 17:22:15 localhost kernel:  [<c04aa6f7>] blkdev_put+0xa/0xc
>Feb 17 17:22:15 localhost kernel:  [<c04aa721>] blkdev_close+0x28/0x2b
>Feb 17 17:22:15 localhost kernel:  [<c048a688>] __fput+0xb3/0x157
>Feb 17 17:22:15 localhost kernel:  [<c048a743>] fput+0x17/0x19
>Feb 17 17:22:15 localhost kernel:  [<f8ef0bde>] loop_clr_fd+0x159/0x16d [loop]
>Feb 17 17:22:15 localhost kernel:  [<f8ef168a>] lo_ioctl+0x640/0xa01 [loop]
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c040a0ae>] ? sched_clock+0x8/0xb
>Feb 17 17:22:15 localhost kernel:  [<c04431f1>] ? lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:  [<c04d7641>] ? avc_has_perm_noaudit+0x3a1/0x3dc
>Feb 17 17:22:15 localhost kernel:  [<c04d765e>] ? avc_has_perm_noaudit+0x3be/0x3dc
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c04453b8>] ? __lock_acquire+0x53d/0xbf4
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c04453b8>] ? __lock_acquire+0x53d/0xbf4
>Feb 17 17:22:15 localhost kernel:  [<c04431f1>] ? lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c04453b8>] ? __lock_acquire+0x53d/0xbf4
>Feb 17 17:22:15 localhost kernel:  [<c04d7641>] ? avc_has_perm_noaudit+0x3a1/0x3dc
>Feb 17 17:22:15 localhost kernel:  [<c040a37c>] ? native_sched_clock+0xb5/0xd1
>Feb 17 17:22:15 localhost kernel:  [<c040a0ae>] ? sched_clock+0x8/0xb
>Feb 17 17:22:15 localhost kernel:  [<c04431f1>] ? lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:  [<c04d7641>] ? avc_has_perm_noaudit+0x3a1/0x3dc
>Feb 17 17:22:15 localhost kernel:  [<c04f1df9>] blkdev_driver_ioctl+0x49/0x5b
>Feb 17 17:22:15 localhost kernel:  [<c04f25b7>] blkdev_ioctl+0x7ac/0x7c9
>Feb 17 17:22:15 localhost kernel:  [<c04431f1>] ? lock_release_holdtime+0x1a/0x115
>Feb 17 17:22:15 localhost kernel:  [<c04d952f>] ? inode_has_perm+0x5b/0x65
>Feb 17 17:22:15 localhost kernel:  [<c0483bf7>] ? check_object+0x111/0x185
>Feb 17 17:22:15 localhost kernel:  [<c04d9909>] ? file_has_perm+0x7f/0x88
>Feb 17 17:22:15 localhost kernel:  [<c04aa0c8>] block_ioctl+0x16/0x1b
>Feb 17 17:22:15 localhost kernel:  [<c04aa0b2>] ? block_ioctl+0x0/0x1b
>Feb 17 17:22:15 localhost kernel:  [<c0493dba>] vfs_ioctl+0x22/0x69
>Feb 17 17:22:15 localhost kernel:  [<c049403a>] do_vfs_ioctl+0x239/0x24c
>Feb 17 17:22:15 localhost kernel:  [<c04d9a95>] ? selinux_file_ioctl+0xa8/0xab
>Feb 17 17:22:15 localhost kernel:  [<c049408d>] sys_ioctl+0x40/0x5b
>Feb 17 17:22:15 localhost kernel:  [<c0405d66>] syscall_call+0x7/0xb
>Feb 17 17:22:15 localhost kernel:  =======================

Actions: View

Attachments on bug 433329: 295184