Greetings, While running through tests in the installation matrix (http://fedoraproject.org/wiki/Test_Results:Current_Installation_Test), I keep seeing different versions of the "INFO: possible recursive locking detected" message. For example, I see the below during successful completion of a KVM guest install (see below). Is anyone else seeing these? Anyone have tips/suggestions on where to gather more information to further diagnose these messages? Thanks, James disabling swap... /dev/dm-1 /dev/vdb1 unmounting filesystems... /mnt/runtime done disabling /dev/loop0 LOOP_CLR_FD failed: 16 /proc done /dev/pts done /sys done /selinux done /mnt/sysimage/boot done /mnt/sysimage/dev/pts done /mnt/sysimage/dev/shm done /mnt/sysimage/dev done /mnt/sysimage/mnt/oldroot done /mnt/sysimage/proc/bus/usb done /mnt/sysimage/proc done /mnt/sysimage/sys done /mnt/sysimage/selinux done /mnt/sysimage done waiting for mdraid sets to become clean... ============================================= [ INFO: possible recursive locking detected ] 2.6.33.2-57.fc13.i686 #1 --------------------------------------------- anaconda/385 is trying to acquire lock: (&bdev->bd_mutex){+.+.+.}, at: [<c0501778>] __blkdev_put+0x28/0x12c but task is already holding lock: (&bdev->bd_mutex){+.+.+.}, at: [<c0501778>] __blkdev_put+0x28/0x12c other info that might help us debug this: 1 lock held by anaconda/385: #0: (&bdev->bd_mutex){+.+.+.}, at: [<c0501778>] __blkdev_put +0x28/0x12c stack backtrace: Pid: 385, comm: anaconda Not tainted 2.6.33.2-57.fc13.i686 #1 Call Trace: [<c07b189b>] ? printk+0x14/0x19 [<c04637fb>] __lock_acquire+0x83f/0xb89 [<c0421008>] ? kvm_clock_read+0x1d/0x20 [<c0407fd1>] ? sched_clock+0x9/0xd [<c045738f>] ? sched_clock_local+0x17/0x11e [<c0463bd8>] lock_acquire+0x93/0xb1 [<c0501778>] ? __blkdev_put+0x28/0x12c [<c07b2b4d>] __mutex_lock_common+0x32/0x30a [<c0501778>] ? __blkdev_put+0x28/0x12c [<c046135a>] ? trace_hardirqs_off+0xb/0xd [<c04575fe>] ? cpu_clock+0x3b/0x53 [<c050092b>] ? bd_release+0x49/0x4c [<c07b2ed2>] mutex_lock_nested+0x35/0x3d [<c0501778>] ? __blkdev_put+0x28/0x12c [<c0501778>] __blkdev_put+0x28/0x12c [<c050188b>] blkdev_put+0xf/0x11 [<c05018e1>] close_bdev_exclusive+0x20/0x24 [<c04e2190>] kill_block_super+0x32/0x36 [<c051542f>] ? vfs_quota_off+0x0/0x17 [<c04e24c2>] deactivate_super+0x5c/0x6f [<c04f383f>] mntput_no_expire+0x91/0xc0 [<c04e15f6>] __fput+0x184/0x18c [<c04e1616>] fput+0x18/0x1a [<c066c65e>] loop_clr_fd+0x19b/0x1a4 [<c066c6a0>] lo_release+0x39/0x5e [<c05017c8>] __blkdev_put+0x78/0x12c [<c050188b>] blkdev_put+0xf/0x11 [<c05018e1>] close_bdev_exclusive+0x20/0x24 [<c04e2190>] kill_block_super+0x32/0x36 [<c051542f>] ? vfs_quota_off+0x0/0x17 [<c04e24c2>] deactivate_super+0x5c/0x6f [<c04f383f>] mntput_no_expire+0x91/0xc0 [<c04e15f6>] __fput+0x184/0x18c [<c04e1616>] fput+0x18/0x1a [<c04c6411>] remove_vma+0x43/0x62
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