------------[ cut here ]------------
WARNING: CPU: 1 PID: 4368 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4368 Comm: kworker/u4:6 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ed f7 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 70 f4 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd0c60 EFLAGS: 00010006
RAX: ffffffff819ecfb0 RBX: 0000000000000008 RCX: ffff88802c89bb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100577b24a
R10: ffffed100577b24a R11: 1ffff1100577b249 R12: ffff88802c89d308
R13: dffffc0000000000 R14: ffffc90000dd0cc8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555588e25808 CR3: 000000000be8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_87c4e24aeb87061a+0x5b/0x460
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
 trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
 switch_mm_irqs_off+0x6e3/0x9a0 arch/x86/mm/tlb.c:-1
 flush_tlb_func+0x1bc/0x510 arch/x86/mm/tlb.c:773
 flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
 __sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
 sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_acquire+0x152/0x3f0 kernel/locking/lockdep.c:5619
Code: f2 01 00 00 41 83 3e 00 0f 85 00 01 00 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 4c 8b b4 24 a0 00 00 00 <fa> 48 c7 c7 c0 23 0b 8a e8 c1 47 4c 08 65 ff 05 1a 82 a6 7e 45 31
RSP: 0018:ffffc900037dfa40 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 362f1950a8e23500
RDX: 0000000000000000 RSI: ffffffff8a599320 RDI: ffffffff8a5992e0
RBP: ffffc900037dfb58 R08: dffffc0000000000 R09: fffffbfff1ad2dd6
R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: ffffffff8c11c360
R13: 1ffff920006fbf54 R14: 0000000000000246 R15: dffffc0000000000
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 batadv_nc_process_nc_paths+0xb2/0x350 net/batman-adv/network-coding.c:691
 batadv_nc_worker+0x4e4/0x5c0 net/batman-adv/network-coding.c:739
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess):
   0:	f2 01 00             	repnz add %eax,(%rax)
   3:	00 41 83             	add    %al,-0x7d(%rcx)
   6:	3e 00 0f             	ds add %cl,(%rdi)
   9:	85 00                	test   %eax,(%rax)
   b:	01 00                	add    %eax,(%rax)
   d:	00 48 c7             	add    %cl,-0x39(%rax)
  10:	84 24 a0             	test   %ah,(%rax,%riz,4)
  13:	00 00                	add    %al,(%rax)
  15:	00 00                	add    %al,(%rax)
  17:	00 00                	add    %al,(%rax)
  19:	00 9c 8f 84 24 a0 00 	add    %bl,0xa02484(%rdi,%rcx,4)
  20:	00 00                	add    %al,(%rax)
  22:	4c 8b b4 24 a0 00 00 	mov    0xa0(%rsp),%r14
  29:	00
* 2a:	fa                   	cli <-- trapping instruction
  2b:	48 c7 c7 c0 23 0b 8a 	mov    $0xffffffff8a0b23c0,%rdi
  32:	e8 c1 47 4c 08       	call   0x84c47f8
  37:	65 ff 05 1a 82 a6 7e 	incl   %gs:0x7ea6821a(%rip)        # 0x7ea68258
  3e:	45                   	rex.RB
  3f:	31                   	.byte 0x31