================================
WARNING: inconsistent lock state
5.12.0-rc2-syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-R} usage.
udevd/4295 [HC0[0]:SC1[1]:HE0:SE0] takes:
8a58c26c (&inode->i_size_seqcount){+.+-}-{0:0}, at: end_bio_bh_io_sync+0x38/0x54 fs/buffer.c:3006
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire.part.0+0xf0/0x41c kernel/locking/lockdep.c:5510
  lock_acquire+0x6c/0x74 kernel/locking/lockdep.c:5483
  do_write_seqcount_begin_nested include/linux/seqlock.h:520 [inline]
  do_write_seqcount_begin include/linux/seqlock.h:545 [inline]
  i_size_write include/linux/fs.h:863 [inline]
  set_capacity+0x13c/0x1f8 block/genhd.c:50
  brd_alloc+0x130/0x180 drivers/block/brd.c:401
  brd_init+0xcc/0x1e0 drivers/block/brd.c:500
  do_one_initcall+0x8c/0x59c init/main.c:1226
  do_initcall_level init/main.c:1299 [inline]
  do_initcalls init/main.c:1315 [inline]
  do_basic_setup init/main.c:1335 [inline]
  kernel_init_freeable+0x2cc/0x330 init/main.c:1537
  kernel_init+0x10/0x120 init/main.c:1424
  ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:158
  0x0
irq event stamp: 743159
hardirqs last  enabled at (743158): [<802011ec>] __do_softirq+0xf4/0x7ac kernel/softirq.c:329
hardirqs last disabled at (743159): [<8277d260>] __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:157 [inline]
hardirqs last disabled at (743159): [<8277d260>] _raw_read_lock_irqsave+0x84/0x88 kernel/locking/spinlock.c:231
softirqs last  enabled at (742984): [<8020167c>] __do_softirq+0x584/0x7ac kernel/softirq.c:372
softirqs last disabled at (743157): [<8024e224>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (743157): [<8024e224>] invoke_softirq kernel/softirq.c:228 [inline]
softirqs last disabled at (743157): [<8024e224>] __irq_exit_rcu+0x1d8/0x200 kernel/softirq.c:422

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&inode->i_size_seqcount);
  <Interrupt>
    lock(&inode->i_size_seqcount);

 *** DEADLOCK ***

2 locks held by udevd/4295:
 #0: 84218254 (tomoyo_ss){....}-{0:0}, at: tomoyo_path_perm+0x94/0x214 security/tomoyo/file.c:847
 #1: 8a58c010 (&ni->size_lock){...-}-{2:2}, at: ntfs_end_buffer_async_read+0x6c/0x558 fs/ntfs/aops.c:66

stack backtrace:
CPU: 0 PID: 4295 Comm: udevd Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<82740468>] (dump_backtrace) from [<827406dc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:252)
 r7:00000080 r6:60060193 r5:00000000 r4:8422a3c4
[<827406c4>] (show_stack) from [<82751b58>] (__dump_stack lib/dump_stack.c:79 [inline])
[<827406c4>] (show_stack) from [<82751b58>] (dump_stack+0xb8/0xe8 lib/dump_stack.c:120)
[<82751aa0>] (dump_stack) from [<82742918>] (print_usage_bug.part.0+0x228/0x230 kernel/locking/lockdep.c:3806)
 r7:886d5808 r6:82803274 r5:848a3560 r4:886d5140
[<827426f0>] (print_usage_bug.part.0) from [<802bb4b8>] (print_usage_bug kernel/locking/lockdep.c:3776 [inline])
[<827426f0>] (print_usage_bug.part.0) from [<802bb4b8>] (valid_state kernel/locking/lockdep.c:3818 [inline])
[<827426f0>] (print_usage_bug.part.0) from [<802bb4b8>] (mark_lock_irq kernel/locking/lockdep.c:4021 [inline])
[<827426f0>] (print_usage_bug.part.0) from [<802bb4b8>] (mark_lock.part.0+0xc34/0x136c kernel/locking/lockdep.c:4478)
 r10:84a42fe8 r9:84437748 r8:00000000 r7:844372d4 r6:00000006 r5:886d5808
 r4:00000005
[<802ba884>] (mark_lock.part.0) from [<802bca0c>] (mark_lock kernel/locking/lockdep.c:4442 [inline])
[<802ba884>] (mark_lock.part.0) from [<802bca0c>] (mark_usage kernel/locking/lockdep.c:4365 [inline])
[<802ba884>] (mark_lock.part.0) from [<802bca0c>] (__lock_acquire+0xa84/0x3318 kernel/locking/lockdep.c:4854)
 r10:886d5808 r9:886d5140 r8:00000001 r7:00040000 r6:00000238 r5:848a3560
 r4:00000000
[<802bbf88>] (__lock_acquire) from [<802bfe90>] (lock_acquire.part.0+0xf0/0x41c kernel/locking/lockdep.c:5510)
 r10:00000080 r9:60060193 r8:00000000 r7:00000000 r6:83ecd680 r5:83ecd680
 r4:88dcb930
[<802bfda0>] (lock_acquire.part.0) from [<802c0228>] (lock_acquire+0x6c/0x74 kernel/locking/lockdep.c:5483)
 r10:8052dcb4 r9:00000000 r8:00000001 r7:00000002 r6:00000000 r5:00000000
 r4:8a58c26c
[<802c01bc>] (lock_acquire) from [<808b1af8>] (seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline])
[<802c01bc>] (lock_acquire) from [<808b1af8>] (i_size_read include/linux/fs.h:838 [inline])
[<802c01bc>] (lock_acquire) from [<808b1af8>] (ntfs_end_buffer_async_read+0xb4/0x558 fs/ntfs/aops.c:68)
 r10:8a58c000 r9:60060193 r8:8052dcb4 r7:8a58c26c r6:df404200 r5:8a6367e0
 r4:8a58c1c8
[<808b1a44>] (ntfs_end_buffer_async_read) from [<8052dcb4>] (end_bio_bh_io_sync+0x38/0x54 fs/buffer.c:3006)
 r10:00000400 r9:00000400 r8:0000000a r7:00000000 r6:8727aa80 r5:8a6367e0
 r4:88d636c0
[<8052dc7c>] (end_bio_bh_io_sync) from [<80f0f638>] (bio_endio+0x124/0x338 block/bio.c:1436)
 r5:80f0f84c r4:88d636c0
[<80f0f514>] (bio_endio) from [<80f166cc>] (req_bio_endio block/blk-core.c:265 [inline])
[<80f0f514>] (bio_endio) from [<80f166cc>] (blk_update_request+0x220/0x724 block/blk-core.c:1456)
 r9:00000400 r8:0000000a r7:00000000 r6:8727aa80 r5:00000400 r4:88d636c0
[<80f164ac>] (blk_update_request) from [<80f23128>] (blk_mq_end_request+0x1c/0x144 block/blk-mq.c:564)
 r10:00000010 r9:88dca000 r8:8404ec98 r7:00000000 r6:00000004 r5:8727aa80
 r4:8727aa80
[<80f2310c>] (blk_mq_end_request) from [<811d1e2c>] (lo_complete_rq+0x98/0xd4 drivers/block/loop.c:497)
 r7:00000003 r6:00000004 r5:8727aa80 r4:ffffffc8
[<811d1d94>] (lo_complete_rq) from [<80f21ab4>] (blk_complete_reqs+0x5c/0x68 block/blk-mq.c:576)
 r5:00000005 r4:ffffffc8
[<80f21a58>] (blk_complete_reqs) from [<80f21b1c>] (blk_done_softirq+0x2c/0x30 block/blk-mq.c:581)
 r5:00000005 r4:83ed846c
[<80f21af0>] (blk_done_softirq) from [<802012fc>] (__do_softirq+0x204/0x7ac kernel/softirq.c:345)
 r5:00000005 r4:84004090
[<802010f8>] (__do_softirq) from [<8024e224>] (do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline])
[<802010f8>] (__do_softirq) from [<8024e224>] (invoke_softirq kernel/softirq.c:228 [inline])
[<802010f8>] (__do_softirq) from [<8024e224>] (__irq_exit_rcu+0x1d8/0x200 kernel/softirq.c:422)
 r10:88dcbbe0 r9:88dcbc48 r8:00000001 r7:00000000 r6:83ed8498 r5:00000000
 r4:83ed9d00
[<8024e04c>] (__irq_exit_rcu) from [<8024e3d8>] (irq_exit+0x10/0x3c kernel/softirq.c:446)
 r5:00000000 r4:83ed8498
[<8024e3c8>] (irq_exit) from [<802d8a34>] (__handle_domain_irq+0xb4/0x120 kernel/irq/irqdesc.c:692)
[<802d8980>] (__handle_domain_irq) from [<810109b0>] (handle_domain_irq include/linux/irqdesc.h:176 [inline])
[<802d8980>] (__handle_domain_irq) from [<810109b0>] (gic_handle_irq+0x84/0xac drivers/irqchip/irq-gic.c:370)
 r10:60060013 r9:40060193 r8:e000200c r7:83ed84bc r6:e0002000 r5:88dcbc48
 r4:8404f4b4
[<8101092c>] (gic_handle_irq) from [<80200abc>] (__irq_svc+0x5c/0x94 arch/arm/kernel/entry-armv.S:205)
Exception stack(0x88dcbc48 to 0x88dcbc90)
bc40:                   00000000 83262ba0 00000001 20060093 8413c980 8413ca44
bc60: 80e9dcb4 8413cad0 00000001 00000000 60060013 88dcbcdc 88dcbc40 88dcbc98
bc80: 82773fac 8030b658 20060013 ffffffff
 r9:88dca000 r8:00000001 r7:88dcbc7c r6:ffffffff r5:20060013 r4:8030b658
[<8030b5e8>] (ktime_get_real_seconds) from [<80e9dcb4>] (tomoyo_update_stat+0x40/0x48 security/tomoyo/common.c:2340)
 r10:000000c5 r9:00000005 r8:88dcbdac r7:00000000 r6:83120e84 r5:00000001
 r4:84b07450
[<80e9dc74>] (tomoyo_update_stat) from [<80e9dd80>] (tomoyo_supervisor+0xc4/0x5a0 security/tomoyo/common.c:2079)
 r5:83120e84 r4:88dcbdc4
[<80e9dcbc>] (tomoyo_supervisor) from [<80ea2648>] (tomoyo_audit_path_log security/tomoyo/file.c:168 [inline])
[<80e9dcbc>] (tomoyo_supervisor) from [<80ea2648>] (tomoyo_path_permission security/tomoyo/file.c:587 [inline])
[<80e9dcbc>] (tomoyo_supervisor) from [<80ea2648>] (tomoyo_path_permission+0x98/0xa4 security/tomoyo/file.c:573)
 r3:8b001500 r2:831190c8 r1:83120e84
 r10:000000c5 r9:00000005 r8:88dcbdac r7:8290a8f4 r6:80ea2888 r5:83120e84
 r4:88dcbdc4
[<80ea25b0>] (tomoyo_path_permission) from [<80ea32bc>] (tomoyo_path_perm+0x158/0x214 security/tomoyo/file.c:838)
 r9:00000000 r8:00000001 r7:00000000 r6:00000000 r5:00000005 r4:8b137dc8
[<80ea3164>] (tomoyo_path_perm) from [<80ea761c>] (tomoyo_inode_getattr+0x1c/0x20 security/tomoyo/tomoyo.c:123)
 r9:88dca000 r8:8b137dc0 r7:8b137dc8 r6:88dcbee8 r5:8b137dc8 r4:8335fd58
[<80ea7600>] (tomoyo_inode_getattr) from [<80e67fb4>] (security_inode_getattr+0x44/0x60 security/security.c:1288)
[<80e67f70>] (security_inode_getattr) from [<804e0eac>] (vfs_getattr fs/stat.c:131 [inline])
[<80e67f70>] (security_inode_getattr) from [<804e0eac>] (vfs_fstat+0x2c/0x74 fs/stat.c:156)
 r5:8b137dc0 r4:7efe1c40
[<804e0e80>] (vfs_fstat) from [<804e0f8c>] (__do_sys_fstat64+0x2c/0x6c fs/stat.c:523)
 r9:88dca000 r8:80200224 r7:000000c5 r6:00c53f10 r5:76cd5c18 r4:7efe1c40
[<804e0f60>] (__do_sys_fstat64) from [<804e10ac>] (sys_fstat64+0x10/0x14 fs/stat.c:520)
 r4:00c53f10
[<804e109c>] (sys_fstat64) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64)
Exception stack(0x88dcbfa8 to 0x88dcbff0)
bfa0:                   00c53f10 76cd5c18 0000000c 7efe1c40 7efe1c40 00c53f10
bfc0: 00c53f10 76cd5c18 00c53f10 000000c5 0000000a 7efe2168 00000000 00000000
bfe0: 00000001 7efe1c3c 76be74e8 76c52b28