general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 14354 Comm: syz-executor.0 Not tainted 6.1.84-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:dev_map_enqueue+0x2d/0x340 kernel/bpf/devmap.c:529
Code: 41 56 41 55 41 54 53 48 83 ec 10 49 89 d5 49 89 f7 48 89 fd 49 bc 00 00 00 00 00 fc ff df e8 fa 67 df ff 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 74 de 36 00 4c 8b 75 00 48 83 c5
RSP: 0018:ffffc9000df7f808 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880b99392a8 RCX: 0000000000040000
RDX: ffffc90003bd1000 RSI: 00000000000000a4 RDI: 00000000000000a5
RBP: 0000000000000000 R08: 0000000000000005 R09: ffffffff8889fe02
R10: 0000000000000004 R11: ffff8880775f3b80 R12: dffffc0000000000
R13: ffff88805e404000 R14: 0000000000000019 R15: ffff888022678000
FS:  00007f28a5e7b6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31a21000 CR3: 000000005132e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __xdp_do_redirect_frame net/core/filter.c:4268 [inline]
 xdp_do_redirect+0x716/0xdb0 net/core/filter.c:4316
 tun_xdp_act+0xdc/0xd50 drivers/net/tun.c:1625
 tun_build_skb drivers/net/tun.c:1715 [inline]
 tun_get_user+0x3118/0x42d0 drivers/net/tun.c:1818
 tun_chr_write_iter+0x10c/0x1f0 drivers/net/tun.c:2044
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7ae/0xba0 fs/read_write.c:584
 ksys_write+0x19c/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f28a507cbaf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 b9 80 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 0c 81 02 00 48
RSP: 002b:00007f28a5e7b090 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f28a51abf80 RCX: 00007f28a507cbaf
RDX: 000000000000002e RSI: 00000000200003c0 RDI: 00000000000000c8
RBP: 00007f28a50ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000002e R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007f28a51abf80 R15: 00007ffdd7b847d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dev_map_enqueue+0x2d/0x340 kernel/bpf/devmap.c:529
Code: 41 56 41 55 41 54 53 48 83 ec 10 49 89 d5 49 89 f7 48 89 fd 49 bc 00 00 00 00 00 fc ff df e8 fa 67 df ff 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 74 de 36 00 4c 8b 75 00 48 83 c5
RSP: 0018:ffffc9000df7f808 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880b99392a8 RCX: 0000000000040000
RDX: ffffc90003bd1000 RSI: 00000000000000a4 RDI: 00000000000000a5
RBP: 0000000000000000 R08: 0000000000000005 R09: ffffffff8889fe02
R10: 0000000000000004 R11: ffff8880775f3b80 R12: dffffc0000000000
R13: ffff88805e404000 R14: 0000000000000019 R15: ffff888022678000
FS:  00007f28a5e7b6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31a21000 CR3: 000000005132e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	41 56                	push   %r14
   2:	41 55                	push   %r13
   4:	41 54                	push   %r12
   6:	53                   	push   %rbx
   7:	48 83 ec 10          	sub    $0x10,%rsp
   b:	49 89 d5             	mov    %rdx,%r13
   e:	49 89 f7             	mov    %rsi,%r15
  11:	48 89 fd             	mov    %rdi,%rbp
  14:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  1b:	fc ff df
  1e:	e8 fa 67 df ff       	call   0xffdf681d
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 ef             	mov    %rbp,%rdi
  34:	e8 74 de 36 00       	call   0x36dead
  39:	4c 8b 75 00          	mov    0x0(%rbp),%r14
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c5                   	.byte 0xc5