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!.gitignore
!Makefile
!build_geoip.sh
7ed3f>] lo_open+0x1f/0x60 [ 983.603704] [] __blkdev_get+0x123/0x400 [ 983.609757] [] blkdev_get+0x34a/0x350 [ 983.615639] [] blkdev_open+0x64/0x80 [ 983.621428] [] do_dentry_open+0x1c6/0x2d0 [ 983.627651] [] vfs_open+0x69/0x80 [ 983.633181] [] path_openat+0x834/0xaa0 [ 983.639152] [] do_filp_open+0x85/0xe0 [ 983.645035] [] do_sys_open+0x14c/0x1f0 [ 983.650999] [] SyS_open+0x1e/0x20 [ 983.656535] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 983.663541] -> #0 (&bdev->bd_mutex){+.+.+.}: [ 983.668107] [] __lock_acquire+0x1003/0x17b0 [ 983.674510] [] lock_acquire+0x1bc/0x1f0 [ 983.680561] [] mutex_lock_nested+0x65/0x350 [ 983.686967] [] blkdev_put+0x31/0x150 [ 983.692761] [] btrfs_close_bdev+0x4f/0x60 [btrfs] [ 983.699699] [] __btrfs_close_devices+0xcb/0x200 [btrfs] [ 983.707178] [] btrfs_close_devices+0x2b/0xa0 [btrfs] [ 983.714380] [] close_ctree+0x265/0x340 [btrfs] [ 983.721061] [] btrfs_put_super+0x19/0x20 [btrfs] [ 983.727908] [] generic_shutdown_super+0x6f/0x100 [ 983.734744] [] kill_anon_super+0x16/0x30 [ 983.740888] [] btrfs_kill_super+0x1e/0x130 [btrfs] [ 983.747909] [] deactivate_locked_super+0x49/0x80 [ 983.754745] [] deactivate_super+0x5d/0x70 [ 983.760977] [] cleanup_mnt+0x5c/0x80 [ 983.766773] [] __cleanup_mnt+0x12/0x20 [ 983.772738] [] task_work_run+0x7e/0xc0 [ 983.778708] [] exit_to_usermode_loop+0x7e/0xb4 [ 983.785373] [] syscall_return_slowpath+0xbb/0xd0 [ 983.792212] [] entry_SYSCALL_64_fastpath+0xbf/0xc1 [ 983.799225] [ 983.799225] other info that might help us debug this: [ 983.799225] [ 983.807291] Chain exists of: &bdev->bd_mutex --> namespace_sem --> &fs_devs->device_list_mutex [ 983.816521] Possible unsafe locking scenario: [ 983.816521] [ 983.822489] CPU0 CPU1 [ 983.827043] ---- ---- [ 983.831599] lock(&fs_devs->device_list_mutex); [ 983.836289] lock(namespace_sem); [ 983.842268] lock(&fs_devs->device_list_mutex); [ 983.849478] lock(&bdev->bd_mutex); [ 983.853127] [ 983.853127] *** DEADLOCK *** [ 983.853127] [ 983.859113] 3 locks held by umount/21720: [ 983.863145] #0: (&type->s_umount_key#35){++++..}, at: [] deactivate_super+0x55/0x70 [ 983.872713] #1: (uuid_mutex){+.+.+.}, at: [] btrfs_close_devices+0x23/0xa0 [btrfs] [ 983.882206] #2: (&fs_devs->device_list_mutex){+.+...}, at: [] __btrfs_close_devices+0x46/0x200 [btrfs] [ 983.893422] [ 983.893422] stack backtrace: [ 983.897824] CPU: 6 PID: 21720 Comm: umount Not tainted 4.8.0-rc5-ceph-00023-g1b39cec2 #1 [ 983.905958] Hardware name: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 1.0c 09/07/2015 [ 983.913492] 0000000000000000 ffff8c8a53c17a38 ffffffff91429521 ffffffff9260f4f0 [ 983.921018] ffffffff92642760 ffff8c8a53c17a88 ffffffff911b2b04 0000000000000050 [ 983.928542] ffffffff9237d620 ffff8c8a5294aee0 ffff8c8a5294aeb8 ffff8c8a5294aee0 [ 983.936072] Call Trace: [ 983.938545] [] dump_stack+0x85/0xc4 [ 983.943715] [] print_circular_bug+0x1fb/0x20c [ 983.949748] [] __lock_acquire+0x1003/0x17b0 [ 983.955613] [] lock_acquire+0x1bc/0x1f0 [ 983.961123] [] ? blkdev_put+0x31/0x150 [ 983.966550] [] mutex_lock_nested+0x65/0x350 [ 983.972407] [] ? blkdev_put+0x31/0x150 [ 983.977832] [] blkdev_put+0x31/0x150 [ 983.983101] [] btrfs_close_bdev+0x4f/0x60 [btrfs] [ 983.989500] [] __btrfs_close_devices+0xcb/0x200 [btrfs] [ 983.996415] [] btrfs_close_devices+0x2b/0xa0 [btrfs] [ 984.003068] [] close_ctree+0x265/0x340 [btrfs] [ 984.009189] [] ? evict_inodes+0x15e/0x170 [ 984.014881] [] btrfs_put_super+0x19/0x20 [btrfs] [ 984.021176] [] generic_shutdown_super+0x6f/0x100 [ 984.027476] [] kill_anon_super+0x16/0x30 [ 984.033082] [] btrfs_kill_super+0x1e/0x130 [btrfs] [ 984.039548] [] deactivate_locked_super+0x49/0x80 [ 984.045839] [] deactivate_super+0x5d/0x70 [ 984.051525] [] cleanup_mnt+0x5c/0x80 [ 984.056774] [] __cleanup_mnt+0x12/0x20 [ 984.062201] [] task_work_run+0x7e/0xc0 [ 984.067625] [] exit_to_usermode_loop+0x7e/0xb4 [ 984.073747] [] syscall_return_slowpath+0xbb/0xd0 [ 984.080038] [] entry_SYSCALL_64_fastpath+0xbf/0xc1 Reported-by: Ilya Dryomov Signed-off-by: Anand Jain Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-)