------------[ cut here ]------------
WARNING: CPU: 1 PID: 4437 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 4437 Comm: syz.3.213 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 fb c7 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e4 c7 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000dd09a8 EFLAGS: 00010246
RAX: ffffffff81aaab4c RBX: 0000000000000000 RCX: ffff888028659dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaaa5d R09: fffffbfff20ec621
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90000dd0a08
FS:  00007fdcc43dd6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000dc CR3: 000000002312a000 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_7e47b8e39696360c+0x32/0x644
 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:1880 [inline]
 bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918
 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
 kmem_cache_free+0x1ce/0x1f0 mm/slub.c:3516
 dst_destroy+0x28e/0x380 net/core/dst.c:123
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:mutex_spin_on_owner+0x19d/0x370 kernel/locking/mutex.c:365
Code: 00 0f 85 94 01 00 00 4d 89 f4 4c 8b 74 24 10 4c 89 fd 48 8b 44 24 48 42 0f b6 04 38 84 c0 0f 85 38 01 00 00 48 8b 04 24 8b 18 <48> 8b 44 24 40 80 3c 28 00 74 0c 48 c7 c7 10 29 79 8c e8 3c 52 68
RSP: 0018:ffffc90003067af8 EFLAGS: 00000246
RAX: ffff88802831bbc8 RBX: 0000000000000000 RCX: ffffffff8161ea64
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888028659dc0
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed10050cb3b9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802831bb80
R13: ffffffff8da321b0 R14: 0000000000000010 R15: dffffc0000000000
 mutex_optimistic_spin+0x38/0x300 kernel/locking/mutex.c:469
 __mutex_lock_common+0xed4/0x25a0 kernel/locking/mutex.c:680
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 __tun_chr_ioctl+0x460/0x2270 drivers/net/tun.c:3052
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdcc5f64ff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdcc43dd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdcc611cf80 RCX: 00007fdcc5f64ff9
RDX: 0000000020000140 RSI: 00000000400454ca RDI: 0000000000000006
RBP: 00007fdcc5fd7296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdcc611cf80 R15: 00007ffebb7a64d8
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 0f                	add    %cl,(%rdi)
   2:	85 94 01 00 00 4d 89 	test   %edx,-0x76b30000(%rcx,%rax,1)
   9:	f4                   	hlt
   a:	4c 8b 74 24 10       	mov    0x10(%rsp),%r14
   f:	4c 89 fd             	mov    %r15,%rbp
  12:	48 8b 44 24 48       	mov    0x48(%rsp),%rax
  17:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax
  1c:	84 c0                	test   %al,%al
  1e:	0f 85 38 01 00 00    	jne    0x15c
  24:	48 8b 04 24          	mov    (%rsp),%rax
  28:	8b 18                	mov    (%rax),%ebx
* 2a:	48 8b 44 24 40       	mov    0x40(%rsp),%rax <-- trapping instruction
  2f:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  33:	74 0c                	je     0x41
  35:	48 c7 c7 10 29 79 8c 	mov    $0xffffffff8c792910,%rdi
  3c:	e8                   	.byte 0xe8
  3d:	3c 52                	cmp    $0x52,%al
  3f:	68                   	.byte 0x68