================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {INITIAL USE} -> {IN-NMI} usage.
syz.3.831/7808 [HC1[1]:SC0[0]:HE0:SE1] takes:
ffff8880608549d0 (&htab->lockdep_key){....}-{2:2}, at: htab_lock_bucket kernel/bpf/hashtab.c:183 [inline]
ffff8880608549d0 (&htab->lockdep_key){....}-{2:2}, at: htab_lru_map_delete_elem+0x1ae/0x650 kernel/bpf/hashtab.c:1390
{INITIAL USE} state was registered at:
  lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
  htab_lock_bucket kernel/bpf/hashtab.c:183 [inline]
  htab_lru_map_update_elem+0x369/0xc60 kernel/bpf/hashtab.c:1170
  bpf_map_update_value+0x57c/0x650 kernel/bpf/syscall.c:223
  generic_map_update_batch+0x52c/0x7d0 kernel/bpf/syscall.c:1430
  bpf_map_do_batch+0x475/0x5f0 kernel/bpf/syscall.c:-1
  __sys_bpf+0x671/0x6f0 kernel/bpf/syscall.c:-1
  __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
  __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
  __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
  do_syscall_x64 arch/x86/entry/common.c:50 [inline]
  do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
  entry_SYSCALL_64_after_hwframe+0x66/0xd0
irq event stamp: 2060
hardirqs last  enabled at (2059): [<ffffffff89cb8b5f>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
hardirqs last  enabled at (2059): [<ffffffff89cb8b5f>] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202
hardirqs last disabled at (2060): [<ffffffff89c1f27e>] exc_debug_kernel arch/x86/kernel/traps.c:893 [inline]
hardirqs last disabled at (2060): [<ffffffff89c1f27e>] exc_debug+0x6e/0x130 arch/x86/kernel/traps.c:1029
softirqs last  enabled at (1938): [<ffffffff8149447b>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last  enabled at (1938): [<ffffffff8149447b>] invoke_softirq kernel/softirq.c:450 [inline]
softirqs last  enabled at (1938): [<ffffffff8149447b>] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
softirqs last disabled at (1905): [<ffffffff8149447b>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (1905): [<ffffffff8149447b>] invoke_softirq kernel/softirq.c:450 [inline]
softirqs last disabled at (1905): [<ffffffff8149447b>] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659

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

       CPU0
       ----
  lock(&htab->lockdep_key);
  <Interrupt>
    lock(&htab->lockdep_key);

 *** DEADLOCK ***

3 locks held by syz.3.831/7808:
 #0: ffff88805db1c0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056
 #1: ffff88807c920460 (sb_writers#3){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590
 #2: ffff88801fedd350 (&sb->s_type->i_mutex_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:793 [inline]
 #2: ffff88801fedd350 (&sb->s_type->i_mutex_key#8){+.+.}-{3:3}, at: generic_file_write_iter+0x7e/0x1b0 mm/filemap.c:3941

stack backtrace:
CPU: 0 PID: 7808 Comm: syz.3.831 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <#DB>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 lock_acquire+0x2c3/0x400 kernel/locking/lockdep.c:5728
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 htab_lock_bucket kernel/bpf/hashtab.c:183 [inline]
 htab_lru_map_delete_elem+0x1ae/0x650 kernel/bpf/hashtab.c:1390
 bpf_prog_2c29ac5cdc6b1842+0x3a/0xa8c
 bpf_dispatcher_nop_func include/linux/bpf.h:890 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 bpf_overflow_handler+0x1c2/0x4a0 kernel/events/core.c:10307
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
 perf_bp_event+0x276/0x320 kernel/events/core.c:10494
 hw_breakpoint_handler arch/x86/kernel/hw_breakpoint.c:555 [inline]
 hw_breakpoint_exceptions_notify+0x14d/0x470 arch/x86/kernel/hw_breakpoint.c:586
 notifier_call_chain kernel/notifier.c:83 [inline]
 atomic_notifier_call_chain+0x15d/0x280 kernel/notifier.c:198
 notify_die+0x141/0x1a0 kernel/notifier.c:529
 notify_debug+0x20/0x30 arch/x86/kernel/traps.c:872
 exc_debug_kernel arch/x86/kernel/traps.c:929 [inline]
 exc_debug+0xcf/0x130 arch/x86/kernel/traps.c:1029
 asm_exc_debug+0x1a/0x40 arch/x86/include/asm/idtentry.h:642
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 90 90 90 90 90 90 90 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 90 90 90 90 90 90 90 90 90 90 89 d1 83 f8
RSP: 0018:ffffc90002e5f938 EFLAGS: 00050206
RAX: ffffffff83e78601 RBX: 0000000000000000 RCX: 0000000000000d40
RDX: 0000000000001000 RSI: 0000200000000340 RDI: ffff88804f8942c0
RBP: ffffc90002e5fab0 R08: ffff88804f894fff R09: 1ffff11009f129ff
R10: dffffc0000000000 R11: ffffed1009f12a00 R12: 0000200000000080
R13: 00000000000010ff R14: ffff88804f894000 R15: 0000000000001000
 </#DB>
 <TASK>
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline]
 copyin lib/iov_iter.c:168 [inline]
 copy_page_from_iter_atomic+0x516/0x14d0 lib/iov_iter.c:979
 generic_perform_write+0x30b/0x550 mm/filemap.c:3793
 __generic_file_write_iter+0x261/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2179 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x748/0xd70 fs/read_write.c:594
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6a94285559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6a924dd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6a9450cfa0 RCX: 00007f6a94285559
RDX: 000000000000fe33 RSI: 0000200000000080 RDI: 0000000000000008
RBP: 00007f6a9431cab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a9450d038 R14: 00007f6a9450cfa0 R15: 00007ffeca676c98
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 d1                	mov    %edx,%ecx
   2:	c1 e9 03             	shr    $0x3,%ecx
   5:	83 e2 07             	and    $0x7,%edx
   8:	f3 48 a5             	rep movsq %ds:(%rsi),%es:(%rdi)
   b:	89 d1                	mov    %edx,%ecx
   d:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi)
   f:	31 c0                	xor    %eax,%eax
  11:	0f 01 ca             	clac
  14:	c3                   	ret
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	0f 01 cb             	stac
  1f:	83 fa 40             	cmp    $0x40,%edx
  22:	0f 82 70 ff ff ff    	jb     0xffffff98
  28:	89 d1                	mov    %edx,%ecx
* 2a:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction
  2c:	31 c0                	xor    %eax,%eax
  2e:	0f 01 ca             	clac
  31:	c3                   	ret
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	89 d1                	mov    %edx,%ecx
  3e:	83                   	.byte 0x83
  3f:	f8                   	clc