general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 4800 Comm: syz-executor.4 Not tainted 5.16.0-rc8-next-20220107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xd7a/0x5470 kernel/locking/lockdep.c:4897
Code: 15 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 dc 2c 15 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 2e 00 00 49 81 3e 60 f4 1c 8f 0f 84 52 f3 ff
RSP: 0018:ffffc90004f5f9d8 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 1ffff920009ebf66 RCX: 1ffff920009ebf4d
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1b289aa R11: 0000000000000001 R12: 0000000000000000
R13: ffff888037d53a80 R14: 0000000000000018 R15: 0000000000000000
FS:  00007fae75b5f700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fecf1a8a058 CR3: 000000003f13d000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5639 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
 prepare_to_wait+0x43/0x370 kernel/sched/wait.c:266
 nr_accept+0x201/0x640 net/netrom/af_netrom.c:793
 do_accept+0x382/0x510 net/socket.c:1777
 __sys_accept4_file+0x7e/0xe0 net/socket.c:1820
 __sys_accept4+0xb0/0x100 net/socket.c:1850
 __do_sys_accept net/socket.c:1868 [inline]
 __se_sys_accept net/socket.c:1865 [inline]
 __x64_sys_accept+0x71/0xb0 net/socket.c:1865
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fae7722be99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fae75b5f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002b
RAX: ffffffffffffffda RBX: 00007fae7733f100 RCX: 00007fae7722be99
RDX: 00000000200002c0 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fae77285ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe591f8a0f R14: 00007fae75b5f300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xd7a/0x5470 kernel/locking/lockdep.c:4897
Code: 15 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 dc 2c 15 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 2e 00 00 49 81 3e 60 f4 1c 8f 0f 84 52 f3 ff
RSP: 0018:ffffc90004f5f9d8 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 1ffff920009ebf66 RCX: 1ffff920009ebf4d
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1b289aa R11: 0000000000000001 R12: 0000000000000000
R13: ffff888037d53a80 R14: 0000000000000018 R15: 0000000000000000
FS:  00007fae75b5f700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fecf1a8a058 CR3: 000000003f13d000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	41 bf 01 00 00 00    	mov    $0x1,%r15d
   6:	0f 86 c8 00 00 00    	jbe    0xd4
   c:	89 05 dc 2c 15 0e    	mov    %eax,0xe152cdc(%rip)        # 0xe152cee
  12:	e9 bd 00 00 00       	jmpq   0xd4
  17:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1e:	fc ff df
  21:	4c 89 f2             	mov    %r14,%rdx
  24:	48 c1 ea 03          	shr    $0x3,%rdx
* 28:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2c:	0f 85 9f 2e 00 00    	jne    0x2ed1
  32:	49 81 3e 60 f4 1c 8f 	cmpq   $0xffffffff8f1cf460,(%r14)
  39:	0f                   	.byte 0xf
  3a:	84 52 f3             	test   %dl,-0xd(%rdx)
  3d:	ff                   	.byte 0xff