================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {INITIAL USE} -> {IN-NMI} usage.
syz.0.17/4318 [HC1[1]:SC0[0]:HE0:SE1] takes:
ffff88801fd72a38 (&trie->lock){....}-{2:2}, at: trie_delete_elem+0x8e/0x620 kernel/bpf/lpm_trie.c:466
{INITIAL USE} state was registered at:
  lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
  trie_delete_elem+0x8e/0x620 kernel/bpf/lpm_trie.c:466
  bpf_prog_1db1603a7cfa36fb+0x3d/0xec4
  bpf_dispatcher_nop_func include/linux/bpf.h:889 [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:10297
  __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9515
  perf_bp_event+0x276/0x320 kernel/events/core.c:10484
  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_user arch/x86/kernel/traps.c:998 [inline]
  noist_exc_debug+0x73/0x120 arch/x86/kernel/traps.c:1035
  asm_exc_debug+0x2f/0x40 arch/x86/include/asm/idtentry.h:642
irq event stamp: 10766
hardirqs last  enabled at (10765): [<ffffffff89c09fc1>] syscall_enter_from_user_mode+0x21/0x70 kernel/entry/common.c:113
hardirqs last disabled at (10766): [<ffffffff89c0703e>] exc_debug_kernel arch/x86/kernel/traps.c:893 [inline]
hardirqs last disabled at (10766): [<ffffffff89c0703e>] exc_debug+0x6e/0x130 arch/x86/kernel/traps.c:1029
softirqs last  enabled at (10724): [<ffffffff8186ad3e>] bpf_prog_load+0x10ee/0x14e0 kernel/bpf/syscall.c:2380
softirqs last disabled at (10722): [<ffffffff81851008>] spin_lock_bh include/linux/spinlock.h:369 [inline]
softirqs last disabled at (10722): [<ffffffff81851008>] bpf_ksym_add+0x28/0x330 kernel/bpf/core.c:633

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

       CPU0
       ----
  lock(&trie->lock);
  <Interrupt>
    lock(&trie->lock);

 *** DEADLOCK ***

no locks held by syz.0.17/4318.

stack backtrace:
CPU: 0 PID: 4318 Comm: syz.0.17 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:5614
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 trie_delete_elem+0x8e/0x620 kernel/bpf/lpm_trie.c:466
 bpf_prog_1db1603a7cfa36fb+0x3d/0xec4
 bpf_dispatcher_nop_func include/linux/bpf.h:889 [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:10297
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9515
 perf_bp_event+0x276/0x320 kernel/events/core.c:10484
 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_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:92
Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a
RSP: 0018:ffffc9000315fd80 EFLAGS: 00040202
RAX: ffffffff83e87b01 RBX: 0000000000000020 RCX: 0000000000000004
RDX: 0000000000000000 RSI: 0000200000000300 RDI: ffffc9000315fe00
RBP: 0000000000000000 R08: 0000000affffffff R09: 1ffff9200062bfc3
R10: dffffc0000000000 R11: fffff5200062bfc4 R12: 00007ffffffff000
R13: 0000200000000320 R14: ffffc9000315fe00 R15: 0000200000000300
 </#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]
 _copy_from_user+0xfa/0x170 lib/usercopy.c:23
 copy_from_user include/linux/uaccess.h:192 [inline]
 copy_from_bpfptr_offset include/linux/bpfptr.h:52 [inline]
 copy_from_bpfptr include/linux/bpfptr.h:58 [inline]
 __sys_bpf+0x26d/0x6f0 kernel/bpf/syscall.c:4630
 __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
RIP: 0033:0x7f99b71d80d9
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:00007ffc0ffc3618 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f99b745ffa0 RCX: 00007f99b71d80d9
RDX: 0000000000000020 RSI: 0000200000000300 RDI: 0000000000000009
RBP: 00007f99b726f024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f99b745ffac R14: 00007f99b745ffa0 R15: 00007f99b745ffa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	38 4c 89 47          	cmp    %cl,0x47(%rcx,%rcx,4)
   4:	20 4c 89 4f          	and    %cl,0x4f(%rcx,%rcx,4)
   8:	28 4c 89 57          	sub    %cl,0x57(%rcx,%rcx,4)
   c:	30 4c 89 5f          	xor    %cl,0x5f(%rcx,%rcx,4)
  10:	38 48 8d             	cmp    %cl,-0x73(%rax)
  13:	76 40                	jbe    0x55
  15:	48 8d 7f 40          	lea    0x40(%rdi),%rdi
  19:	ff c9                	dec    %ecx
  1b:	75 b6                	jne    0xffffffd3
  1d:	89 d1                	mov    %edx,%ecx
  1f:	83 e2 07             	and    $0x7,%edx
  22:	c1 e9 03             	shr    $0x3,%ecx
  25:	74 12                	je     0x39
  27:	4c 8b 06             	mov    (%rsi),%r8
* 2a:	4c 89 07             	mov    %r8,(%rdi) <-- trapping instruction
  2d:	48 8d 76 08          	lea    0x8(%rsi),%rsi
  31:	48 8d 7f 08          	lea    0x8(%rdi),%rdi
  35:	ff c9                	dec    %ecx
  37:	75 ee                	jne    0x27
  39:	21 d2                	and    %edx,%edx
  3b:	74 10                	je     0x4d
  3d:	89 d1                	mov    %edx,%ecx
  3f:	8a                   	.byte 0x8a