Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 2 UID: 0 PID: 73 Comm: kworker/2:1 Not tainted 6.13.0-rc2-syzkaller-00036-g231825b2e1ff #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events cleanup_bearer
RIP: 0010:read_pnet include/net/net_namespace.h:392 [inline]
RIP: 0010:sock_net include/net/sock.h:655 [inline]
RIP: 0010:cleanup_bearer+0x23d/0x390 net/tipc/udp_media.c:820
Code: ea 03 80 3c 02 00 0f 85 44 01 00 00 48 8b 5b 18 e8 58 17 5a 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 30 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 12 01 00 00 48 c7 c0 5c d8 1e 90 48 8b 5b 30 48
RSP: 0018:ffffc90000bf7c70 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8abfb29c RDI: 0000000000000030
RBP: ffff888066d29198 R08: 0000000000000001 R09: ffffed100418748d
R10: ffff888020c3a46b R11: 0000000000000004 R12: ffff888066d29160
R13: ffff888066d29198 R14: 0000000000000001 R15: ffffc90000bf7d80
FS:  0000000000000000(0000) GS:ffff88802b600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc5b2d47a8 CR3: 000000000db7e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:read_pnet include/net/net_namespace.h:392 [inline]
RIP: 0010:sock_net include/net/sock.h:655 [inline]
RIP: 0010:cleanup_bearer+0x23d/0x390 net/tipc/udp_media.c:820
Code: ea 03 80 3c 02 00 0f 85 44 01 00 00 48 8b 5b 18 e8 58 17 5a 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 30 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 12 01 00 00 48 c7 c0 5c d8 1e 90 48 8b 5b 30 48
RSP: 0018:ffffc90000bf7c70 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8abfb29c RDI: 0000000000000030
RBP: ffff888066d29198 R08: 0000000000000001 R09: ffffed100418748d
R10: ffff888020c3a46b R11: 0000000000000004 R12: ffff888066d29160
R13: ffff888066d29198 R14: 0000000000000001 R15: ffffc90000bf7d80
FS:  0000000000000000(0000) GS:ffff88802b600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7b69614440 CR3: 0000000025964000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 44 01 00 00    	jne    0x14e
   a:	48 8b 5b 18          	mov    0x18(%rbx),%rbx
   e:	e8 58 17 5a 00       	call   0x5a176b
  13:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1a:	fc ff df
  1d:	48 8d 7b 30          	lea    0x30(%rbx),%rdi
  21:	48 89 fa             	mov    %rdi,%rdx
  24:	48 c1 ea 03          	shr    $0x3,%rdx
* 28:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2c:	0f 85 12 01 00 00    	jne    0x144
  32:	48 c7 c0 5c d8 1e 90 	mov    $0xffffffff901ed85c,%rax
  39:	48 8b 5b 30          	mov    0x30(%rbx),%rbx
  3d:	48                   	rex.W