BUG: kernel NULL pointer dereference, address: 0000000000000080
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 4b865067 P4D 4b865067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5550 Comm: syz-executor.5 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:qlink_to_object mm/kasan/quarantine.c:129 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:134 [inline]
RIP: 0010:qlist_free_all+0x74/0x110 mm/kasan/quarantine.c:165
Code: 52 7b ff ff 48 85 db 75 52 9c 58 f6 c4 02 0f 85 a4 00 00 00 48 85 db 74 01 fb 48 85 ed 74 73 48 89 ee 4d 85 e4 4c 89 e7 74 38 <48> 63 87 80 00 00 00 48 8b 2e 48 29 c6 9c 5b fa 81 e3 00 02 00 00
RSP: 0018:ffffc90004bb7cb8 EFLAGS: 00010246
RAX: ffffea0000000000 RBX: 0000000000000200 RCX: ffffea0000000007
RDX: 0000000000000000 RSI: ffff888000000000 RDI: 0000000000000000
RBP: ffff888000000000 R08: 0000000000000000 R09: 000000000000002e
R10: ffffffff81348f1a R11: 000000000000003f R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90004bb7d00 R15: ffffea0000000000
FS:  000055555684d400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000080 CR3: 000000002d877000 CR4: 00000000003526f0
Call Trace:
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
 __kasan_slab_alloc+0x92/0xa0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc mm/slab.c:3323 [inline]
 kmem_cache_alloc+0x1b6/0x540 mm/slab.c:3507
 sock_alloc_inode+0x18/0x1c0 net/socket.c:303
 alloc_inode+0x61/0x230 fs/inode.c:237
 new_inode_pseudo+0x14/0xe0 fs/inode.c:938
 sock_alloc+0x3c/0x260 net/socket.c:626
 __sock_create+0xb9/0x790 net/socket.c:1428
 sock_create net/socket.c:1515 [inline]
 __sys_socket+0xef/0x200 net/socket.c:1557
 __do_sys_socket net/socket.c:1566 [inline]
 __se_sys_socket net/socket.c:1564 [inline]
 __x64_sys_socket+0x6f/0xb0 net/socket.c:1564
 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: 0033:0x7fbb669530b7
Code: f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 29 00 00 00 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:00007ffc9ae76df8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbb669530b7
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007ffc9ae76e20 R08: 0000000000000000 R09: ffffffffffffff00
R10: 0000000000000010 R11: 0000000000000206 R12: 0000000000000032
R13: 0000000000000000 R14: 000000000000000c R15: 00007fbb66a33d20
Modules linked in:
CR2: 0000000000000080
---[ end trace 4d058ba2d621ce8c ]---
RIP: 0010:qlink_to_object mm/kasan/quarantine.c:129 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:134 [inline]
RIP: 0010:qlist_free_all+0x74/0x110 mm/kasan/quarantine.c:165
Code: 52 7b ff ff 48 85 db 75 52 9c 58 f6 c4 02 0f 85 a4 00 00 00 48 85 db 74 01 fb 48 85 ed 74 73 48 89 ee 4d 85 e4 4c 89 e7 74 38 <48> 63 87 80 00 00 00 48 8b 2e 48 29 c6 9c 5b fa 81 e3 00 02 00 00
RSP: 0018:ffffc90004bb7cb8 EFLAGS: 00010246
RAX: ffffea0000000000 RBX: 0000000000000200 RCX: ffffea0000000007
RDX: 0000000000000000 RSI: ffff888000000000 RDI: 0000000000000000
RBP: ffff888000000000 R08: 0000000000000000 R09: 000000000000002e
R10: ffffffff81348f1a R11: 000000000000003f R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90004bb7d00 R15: ffffea0000000000
FS:  000055555684d400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000080 CR3: 000000002d877000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	52                   	push   %rdx
   1:	7b ff                	jnp    0x2
   3:	ff 48 85             	decl   -0x7b(%rax)
   6:	db 75 52             	(bad)  0x52(%rbp)
   9:	9c                   	pushfq
   a:	58                   	pop    %rax
   b:	f6 c4 02             	test   $0x2,%ah
   e:	0f 85 a4 00 00 00    	jne    0xb8
  14:	48 85 db             	test   %rbx,%rbx
  17:	74 01                	je     0x1a
  19:	fb                   	sti
  1a:	48 85 ed             	test   %rbp,%rbp
  1d:	74 73                	je     0x92
  1f:	48 89 ee             	mov    %rbp,%rsi
  22:	4d 85 e4             	test   %r12,%r12
  25:	4c 89 e7             	mov    %r12,%rdi
  28:	74 38                	je     0x62
* 2a:	48 63 87 80 00 00 00 	movslq 0x80(%rdi),%rax <-- trapping instruction
  31:	48 8b 2e             	mov    (%rsi),%rbp
  34:	48 29 c6             	sub    %rax,%rsi
  37:	9c                   	pushfq
  38:	5b                   	pop    %rbx
  39:	fa                   	cli
  3a:	81 e3 00 02 00 00    	and    $0x200,%ebx