audit: type=1400 audit(1546649660.141:5): avc: denied { associate } for pid=2096 comm="syz-executor325" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:33 in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper/1 no locks held by swapper/1/0. Preemption disabled at:[ 393.264008] [] schedule_preempt_disabled+0x1d/0x20 kernel/sched/core.c:3587 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.141+ #1 ffff8801db707660 ffffffff81b42e79 ffffffff828094ad 0000000000000000 0000000000000101 ffff8801da6b2f80 ffff8801da6b2f80 ffff8801db707698 ffffffff813f9ecf ffff8801da6b2f80 ffffffff82ad6720 0000000000000021 Call Trace: [ 393.305937] [] __dump_stack lib/dump_stack.c:15 [inline] [ 393.305937] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] ___might_sleep.cold.31+0x18a/0x1fc kernel/sched/core.c:7988 [] __might_sleep+0x95/0x1a0 kernel/sched/core.c:7945 [] percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:33 [inline] [] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] [] ext4_writepages+0x16d/0x2e00 fs/ext4/inode.c:2659 [] do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 [] __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 [] filemap_write_and_wait_range+0x59/0xb0 mm/filemap.c:578 [] __generic_file_fsync+0x93/0x1a0 fs/libfs.c:974 [] ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116 [] vfs_fsync_range+0x10c/0x260 fs/sync.c:195 [] generic_write_sync include/linux/fs.h:2607 [inline] [] dio_complete+0x512/0x6c0 fs/direct-io.c:282 [] dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323 [] bio_endio+0x1a5/0x1f0 block/bio.c:1781 [] req_bio_endio block/blk-core.c:157 [inline] [] blk_update_request+0x248/0x9b0 block/blk-core.c:2628 [] scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606 [] scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829 [] scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567 [] blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35 [] __do_softirq+0x20e/0x964 kernel/softirq.c:288 [] invoke_softirq kernel/softirq.c:368 [inline] [] irq_exit+0x11c/0x150 kernel/softirq.c:409 [] exiting_irq arch/x86/include/asm/apic.h:669 [inline] [] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252 [] common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:461 [ 393.696154] [] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:56 [] arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline] [] default_idle+0x55/0x360 arch/x86/kernel/process.c:437 [] arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428 [] default_idle_call+0x45/0x60 kernel/sched/idle.c:97 [] cpuidle_idle_call kernel/sched/idle.c:155 [inline] [] cpu_idle_loop kernel/sched/idle.c:248 [inline] [] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303 [] start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:251 ========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.9.141+ #1 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&sbi->s_journal_flag_rwsem){.+.?.+}, at: [] do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 (&ei->i_data_sem){++++..} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem); local_irq_disable(); lock(&sbi->s_journal_flag_rwsem); lock(&ei->i_data_sem); lock(&sbi->s_journal_flag_rwsem); *** DEADLOCK *** no locks held by swapper/1/0. the shortest dependencies between 2nd lock and 1st lock: -> (&ei->i_data_sem){++++..} ops: 46364 { HARDIRQ-ON-W at: mark_irqflags kernel/locking/lockdep.c:2937 [inline] __lock_acquire+0x10b0/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 down_write+0x41/0xa0 kernel/locking/rwsem.c:52 ext4_release_file+0x25b/0x2e0 fs/ext4/file.c:50 __fput+0x263/0x700 fs/file_table.c:208 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x10c/0x180 kernel/task_work.c:116 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x129/0x150 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:263 [inline] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_swapgs+0x5d/0xdb HARDIRQ-ON-R at: mark_irqflags kernel/locking/lockdep.c:2929 [inline] __lock_acquire+0xb79/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 down_read+0x44/0xb0 kernel/locking/rwsem.c:22 ext4_map_blocks+0x361/0x16d0 fs/ext4/inode.c:533 ext4_getblk+0x2cc/0x450 fs/ext4/inode.c:943 ext4_find_entry+0xa94/0x12c0 fs/ext4/namei.c:1420 ext4_lookup+0x139/0x5e0 fs/ext4/namei.c:1559 lookup_slow+0x24a/0x470 fs/namei.c:1668 walk_component+0x822/0xcf0 fs/namei.c:1784 lookup_last fs/namei.c:2266 [inline] path_lookupat.isra.10+0x186/0x410 fs/namei.c:2283 filename_lookup.part.18+0x177/0x370 fs/namei.c:2317 filename_lookup fs/namei.c:2310 [inline] user_path_at_empty+0x53/0x70 fs/namei.c:2578 user_path include/linux/namei.h:60 [inline] do_mount+0x134/0x28a0 fs/namespace.c:2816 SYSC_mount fs/namespace.c:3087 [inline] SyS_mount+0xea/0x100 fs/namespace.c:3064 devtmpfs_mount+0x49/0x70 drivers/base/devtmpfs.c:357 prepare_namespace+0x1e4/0x210 init/do_mounts.c:603 kernel_init_freeable+0x38e/0x3ac init/main.c:1036 kernel_init+0x11/0x15e init/main.c:946 ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 SOFTIRQ-ON-W at: mark_irqflags kernel/locking/lockdep.c:2941 [inline] __lock_acquire+0xbdd/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 down_write+0x41/0xa0 kernel/locking/rwsem.c:52 ext4_release_file+0x25b/0x2e0 fs/ext4/file.c:50 __fput+0x263/0x700 fs/file_table.c:208 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x10c/0x180 kernel/task_work.c:116 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x129/0x150 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:263 [inline] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_swapgs+0x5d/0xdb SOFTIRQ-ON-R at: mark_irqflags kernel/locking/lockdep.c:2941 [inline] __lock_acquire+0xbdd/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 down_read+0x44/0xb0 kernel/locking/rwsem.c:22 ext4_map_blocks+0x361/0x16d0 fs/ext4/inode.c:533 ext4_getblk+0x2cc/0x450 fs/ext4/inode.c:943 ext4_find_entry+0xa94/0x12c0 fs/ext4/namei.c:1420 ext4_lookup+0x139/0x5e0 fs/ext4/namei.c:1559 lookup_slow+0x24a/0x470 fs/namei.c:1668 walk_component+0x822/0xcf0 fs/namei.c:1784 lookup_last fs/namei.c:2266 [inline] path_lookupat.isra.10+0x186/0x410 fs/namei.c:2283 filename_lookup.part.18+0x177/0x370 fs/namei.c:2317 filename_lookup fs/namei.c:2310 [inline] user_path_at_empty+0x53/0x70 fs/namei.c:2578 user_path include/linux/namei.h:60 [inline] do_mount+0x134/0x28a0 fs/namespace.c:2816 SYSC_mount fs/namespace.c:3087 [inline] SyS_mount+0xea/0x100 fs/namespace.c:3064 devtmpfs_mount+0x49/0x70 drivers/base/devtmpfs.c:357 prepare_namespace+0x1e4/0x210 init/do_mounts.c:603 kernel_init_freeable+0x38e/0x3ac init/main.c:1036 kernel_init+0x11/0x15e init/main.c:946 ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 INITIAL USE at: __lock_acquire+0x654/0x4a10 kernel/locking/lockdep.c:3306 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 down_read+0x44/0xb0 kernel/locking/rwsem.c:22 ext4_map_blocks+0x361/0x16d0 fs/ext4/inode.c:533 ext4_getblk+0x2cc/0x450 fs/ext4/inode.c:943 ext4_find_entry+0xa94/0x12c0 fs/ext4/namei.c:1420 ext4_lookup+0x139/0x5e0 fs/ext4/namei.c:1559 lookup_slow+0x24a/0x470 fs/namei.c:1668 walk_component+0x822/0xcf0 fs/namei.c:1784 lookup_last fs/namei.c:2266 [inline] path_lookupat.isra.10+0x186/0x410 fs/namei.c:2283 filename_lookup.part.18+0x177/0x370 fs/namei.c:2317 filename_lookup fs/namei.c:2310 [inline] user_path_at_empty+0x53/0x70 fs/namei.c:2578 user_path include/linux/namei.h:60 [inline] do_mount+0x134/0x28a0 fs/namespace.c:2816 SYSC_mount fs/namespace.c:3087 [inline] SyS_mount+0xea/0x100 fs/namespace.c:3064 devtmpfs_mount+0x49/0x70 drivers/base/devtmpfs.c:357 prepare_namespace+0x1e4/0x210 init/do_mounts.c:603 kernel_init_freeable+0x38e/0x3ac init/main.c:1036 kernel_init+0x11/0x15e init/main.c:946 ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 } ... key at: [] __key.74437+0x0/0x40 ... acquired at: lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 down_write+0x41/0xa0 kernel/locking/rwsem.c:52 ext4_map_blocks+0x6d3/0x16d0 fs/ext4/inode.c:605 mpage_map_one_extent fs/ext4/inode.c:2387 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2443 [inline] ext4_writepages+0x1551/0x2e00 fs/ext4/inode.c:2783 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 __filemap_fdatawrite mm/filemap.c:398 [inline] filemap_flush+0x23/0x30 mm/filemap.c:423 ext4_alloc_da_blocks+0xd9/0x330 fs/ext4/inode.c:3157 ext4_release_file+0x1ff/0x2e0 fs/ext4/file.c:42 __fput+0x263/0x700 fs/file_table.c:208 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x10c/0x180 kernel/task_work.c:116 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x129/0x150 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:263 [inline] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_swapgs+0x5d/0xdb -> (&sbi->s_journal_flag_rwsem){.+.?.+} ops: 304 { HARDIRQ-ON-R at: mark_irqflags kernel/locking/lockdep.c:2929 [inline] __lock_acquire+0xb79/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] ext4_writepages+0x19e/0x2e00 fs/ext4/inode.c:2659 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 SyS_fadvise64_64+0x6db/0x7d0 mm/fadvise.c:123 SYSC_fadvise64 mm/fadvise.c:182 [inline] SyS_fadvise64+0x2c/0x40 mm/fadvise.c:180 do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 entry_SYSCALL_64_after_swapgs+0x5d/0xdb IN-SOFTIRQ-R at: mark_irqflags kernel/locking/lockdep.c:2923 [inline] __lock_acquire+0x1084/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] ext4_writepages+0x19e/0x2e00 fs/ext4/inode.c:2659 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 filemap_write_and_wait_range+0x59/0xb0 mm/filemap.c:578 __generic_file_fsync+0x93/0x1a0 fs/libfs.c:974 ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116 vfs_fsync_range+0x10c/0x260 fs/sync.c:195 generic_write_sync include/linux/fs.h:2607 [inline] dio_complete+0x512/0x6c0 fs/direct-io.c:282 dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323 bio_endio+0x1a5/0x1f0 block/bio.c:1781 req_bio_endio block/blk-core.c:157 [inline] blk_update_request+0x248/0x9b0 block/blk-core.c:2628 scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606 scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829 scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607 scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567 blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35 __do_softirq+0x20e/0x964 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x11c/0x150 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:669 [inline] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252 ret_from_intr+0x0/0x20 arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline] default_idle+0x55/0x360 arch/x86/kernel/process.c:437 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428 default_idle_call+0x45/0x60 kernel/sched/idle.c:97 cpuidle_idle_call kernel/sched/idle.c:155 [inline] cpu_idle_loop kernel/sched/idle.c:248 [inline] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303 start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:251 SOFTIRQ-ON-R at: mark_irqflags kernel/locking/lockdep.c:2941 [inline] __lock_acquire+0xbdd/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] ext4_writepages+0x19e/0x2e00 fs/ext4/inode.c:2659 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 SyS_fadvise64_64+0x6db/0x7d0 mm/fadvise.c:123 SYSC_fadvise64 mm/fadvise.c:182 [inline] SyS_fadvise64+0x2c/0x40 mm/fadvise.c:180 do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 entry_SYSCALL_64_after_swapgs+0x5d/0xdb RECLAIM_FS-ON-R at: mark_held_locks+0xc7/0x130 kernel/locking/lockdep.c:2660 __lockdep_trace_alloc kernel/locking/lockdep.c:2882 [inline] lockdep_trace_alloc+0x18e/0x2a0 kernel/locking/lockdep.c:2897 slab_pre_alloc_hook mm/slab.h:392 [inline] slab_alloc_node mm/slub.c:2641 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0x2d/0x2b0 mm/slub.c:2728 kmem_cache_zalloc include/linux/slab.h:626 [inline] ext4_init_io_end+0x25/0x100 fs/ext4/page-io.c:252 ext4_writepages+0xcd0/0x2e00 fs/ext4/inode.c:2750 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 __filemap_fdatawrite mm/filemap.c:398 [inline] filemap_flush+0x23/0x30 mm/filemap.c:423 ext4_alloc_da_blocks+0xd9/0x330 fs/ext4/inode.c:3157 ext4_release_file+0x1ff/0x2e0 fs/ext4/file.c:42 __fput+0x263/0x700 fs/file_table.c:208 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x10c/0x180 kernel/task_work.c:116 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x129/0x150 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:263 [inline] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_swapgs+0x5d/0xdb INITIAL USE at: __lock_acquire+0x654/0x4a10 kernel/locking/lockdep.c:3306 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] ext4_writepages+0x19e/0x2e00 fs/ext4/inode.c:2659 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 SyS_fadvise64_64+0x6db/0x7d0 mm/fadvise.c:123 SYSC_fadvise64 mm/fadvise.c:182 [inline] SyS_fadvise64+0x2c/0x40 mm/fadvise.c:180 do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 entry_SYSCALL_64_after_swapgs+0x5d/0xdb } ... key at: [] rwsem_key.75130+0x0/0x40 ... acquired at: check_usage_forwards+0x14e/0x290 kernel/locking/lockdep.c:2493 mark_lock_irq kernel/locking/lockdep.c:2610 [inline] mark_lock+0x6ec/0x1290 kernel/locking/lockdep.c:3065 mark_irqflags kernel/locking/lockdep.c:2923 [inline] __lock_acquire+0x1084/0x4a10 kernel/locking/lockdep.c:3302 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] ext4_writepages+0x19e/0x2e00 fs/ext4/inode.c:2659 do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 filemap_write_and_wait_range+0x59/0xb0 mm/filemap.c:578 __generic_file_fsync+0x93/0x1a0 fs/libfs.c:974 ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116 vfs_fsync_range+0x10c/0x260 fs/sync.c:195 generic_write_sync include/linux/fs.h:2607 [inline] dio_complete+0x512/0x6c0 fs/direct-io.c:282 dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323 bio_endio+0x1a5/0x1f0 block/bio.c:1781 req_bio_endio block/blk-core.c:157 [inline] blk_update_request+0x248/0x9b0 block/blk-core.c:2628 scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606 scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829 scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607 scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567 blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35 __do_softirq+0x20e/0x964 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x11c/0x150 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:669 [inline] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252 ret_from_intr+0x0/0x20 arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline] default_idle+0x55/0x360 arch/x86/kernel/process.c:437 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428 default_idle_call+0x45/0x60 kernel/sched/idle.c:97 cpuidle_idle_call kernel/sched/idle.c:155 [inline] cpu_idle_loop kernel/sched/idle.c:248 [inline] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303 start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:251 stack backtrace: CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 4.9.141+ #1 ffff8801db7072d0 ffffffff81b42e79 ffffffff84011300 ffff8801db7073a0 ffff8801da6b2f80 0000000000000001 ffffffff84011300 ffff8801db707320 ffffffff813ff4da 0000000100000000 ffffffff83cab520 ffffffff83ca2910 Call Trace: [ 395.037929] [] __dump_stack lib/dump_stack.c:15 [inline] [ 395.037929] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_irq_inversion_bug.cold.38+0x319/0x32d kernel/locking/lockdep.c:2468 [] check_usage_forwards+0x14e/0x290 kernel/locking/lockdep.c:2493 [] mark_lock_irq kernel/locking/lockdep.c:2610 [inline] [] mark_lock+0x6ec/0x1290 kernel/locking/lockdep.c:3065 [] mark_irqflags kernel/locking/lockdep.c:2923 [inline] [] __lock_acquire+0x1084/0x4a10 kernel/locking/lockdep.c:3302 [] lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 [] percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] [] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] [] ext4_writepages+0x19e/0x2e00 fs/ext4/inode.c:2659 [] do_writepages+0xef/0x1d0 mm/page-writeback.c:2331 [] __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390 [] filemap_write_and_wait_range+0x59/0xb0 mm/filemap.c:578 [] __generic_file_fsync+0x93/0x1a0 fs/libfs.c:974 [] ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116 [] vfs_fsync_range+0x10c/0x260 fs/sync.c:195 [] generic_write_sync include/linux/fs.h:2607 [inline] [] dio_complete+0x512/0x6c0 fs/direct-io.c:282 [] dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323 [] bio_endio+0x1a5/0x1f0 block/bio.c:1781 [] req_bio_endio block/blk-core.c:157 [inline] [] blk_update_request+0x248/0x9b0 block/blk-core.c:2628 [] scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606 [] scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829 [] scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567 [] blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35 [] __do_softirq+0x20e/0x964 kernel/softirq.c:288 [] invoke_softirq kernel/softirq.c:368 [inline] [] irq_exit+0x11c/0x150 kernel/softirq.c:409 [] exiting_irq arch/x86/include/asm/apic.h:669 [inline] [] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252 [] common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:461 [ 395.549492] [] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:56 [] arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline] [] default_idle+0x55/0x360 arch/x86/kernel/process.c:437 [] arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428 [] default_idle_call+0x45/0x60 kernel/sched/idle.c:97 [] cpuidle_idle_call kernel/sched/idle.c:155 [inline] [] cpu_idle_loop kernel/sched/idle.c:248 [inline] [] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303 [] start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:251 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:51 in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper/1 INFO: lockdep is turned off. Preemption disabled at:[ 395.631861] [] schedule_preempt_disabled+0x1d/0x20 kernel/sched/core.c:3587 CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 4.9.141+ #1 ffff8801db707a20 ffffffff81b42e79 ffffffff828094ad 0000000000000000 0000000000000101 ffff8801da6b2f80 ffff8801da6b2f80 ffff8801db707a58 ffffffff813f9ecf ffff8801da6b2f80 ffffffff82a4fa80 0000000000000033 Call Trace: [ 395.674400] [] __dump_stack lib/dump_stack.c:15 [inline] [ 395.674400] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] ___might_sleep.cold.31+0x18a/0x1fc kernel/sched/core.c:7988 [] __might_sleep+0x95/0x1a0 kernel/sched/core.c:7945 [] down_write+0x21/0xa0 kernel/locking/rwsem.c:51 [] inode_lock include/linux/fs.h:766 [inline] [] __generic_file_fsync+0xc1/0x1a0 fs/libfs.c:978 [] ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116 [] vfs_fsync_range+0x10c/0x260 fs/sync.c:195 [] generic_write_sync include/linux/fs.h:2607 [inline] [] dio_complete+0x512/0x6c0 fs/direct-io.c:282 [] dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323 [] bio_endio+0x1a5/0x1f0 block/bio.c:1781 [] req_bio_endio block/blk-core.c:157 [inline] [] blk_update_request+0x248/0x9b0 block/blk-core.c:2628 [] scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606 [] scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829 [] scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567 [] blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35 [] __do_softirq+0x20e/0x964 kernel/softirq.c:288 [] invoke_softirq kernel/softirq.c:368 [inline] [] irq_exit+0x11c/0x150 kernel/softirq.c:409 [] exiting_irq arch/x86/include/asm/apic.h:669 [inline] [] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252 [] common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:461 [ 395.882097] [] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:56 [] arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline] [] default_idle+0x55/0x360 arch/x86/kernel/process.c:437 [] arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428 [] default_idle_call+0x45/0x60 kernel/sched/idle.c:97 [] cpuidle_idle_call kernel/sched/idle.c:155 [inline] [] cpu_idle_loop kernel/sched/idle.c:248 [inline] [] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303 [] start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:251 BUG: scheduling while atomic: swapper/1/0/0x00000102 INFO: lockdep is turned off. Modules linked in: Preemption disabled at:[ 395.958646] [] schedule_preempt_disabled+0x1d/0x20 kernel/sched/core.c:3587