------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:27!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 738 Comm: systemd-udevd Not tainted 4.19.204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:27
Code: 4e fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 90 25 37 00 48 85 db 75 0d e8 f6 23 37 00 4c 89 e0 5b 5d 41 5c c3 e8 e9 23 37 00 <0f> 0b e8 e2 23 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff888235ebfa98 EFLAGS: 00010293
RAX: ffff88803fc68340 RBX: 8888888888888888 RCX: ffffffff812b6e48
RDX: 0000000000000000 RSI: ffffffff812b6ea7 RDI: 0000000000000006
RBP: 8888888908888888 R08: 0000000000000000 R09: 8888888908888888
R10: 0000000000000006 R11: 0000000000000000 R12: 8889000888888888
R13: ffff888235ebfaf0 R14: 0000000000000000 R15: 0000000000000282
FS:  00007f2ab01108c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcdbf6d190 CR3: 000000023aa03000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 virt_to_head_page include/linux/mm.h:665 [inline]
 qlink_to_cache mm/kasan/quarantine.c:127 [inline]
 qlist_free_all+0xbb/0x140 mm/kasan/quarantine.c:163
 quarantine_reduce+0x1a9/0x230 mm/kasan/quarantine.c:259
 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538
 slab_post_alloc_hook mm/slab.h:445 [inline]
 slab_alloc mm/slab.c:3397 [inline]
 kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
 getname_flags+0xce/0x590 fs/namei.c:140
 user_path_at_empty+0x2a/0x50 fs/namei.c:2609
 do_readlinkat+0xcd/0x2f0 fs/stat.c:394
 __do_sys_readlink fs/stat.c:427 [inline]
 __se_sys_readlink fs/stat.c:424 [inline]
 __x64_sys_readlink+0x74/0xb0 fs/stat.c:424
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f2aaef84087
Code: 73 01 c3 48 8b 0d 11 be 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 bd 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffcdbf705f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007ffcdbf71090 RCX: 00007f2aaef84087
RDX: 0000000000000400 RSI: 00007ffcdbf70ab0 RDI: 00007ffcdbf71090
RBP: 0000000000000000 R08: 0000561ae5ca7670 R09: 000000000000000e
R10: 0000000000000075 R11: 0000000000000246 R12: 00007ffcdbf706b0
R13: 0000561ae74ef170 R14: 00007ffcdbf70ab0 R15: 00007ffcdbf7109f
Modules linked in:
---[ end trace 762fceb3c2e6b07c ]---
RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:27
Code: 4e fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 90 25 37 00 48 85 db 75 0d e8 f6 23 37 00 4c 89 e0 5b 5d 41 5c c3 e8 e9 23 37 00 <0f> 0b e8 e2 23 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff888235ebfa98 EFLAGS: 00010293
RAX: ffff88803fc68340 RBX: 8888888888888888 RCX: ffffffff812b6e48
RDX: 0000000000000000 RSI: ffffffff812b6ea7 RDI: 0000000000000006
RBP: 8888888908888888 R08: 0000000000000000 R09: 8888888908888888
R10: 0000000000000006 R11: 0000000000000000 R12: 8889000888888888
R13: ffff888235ebfaf0 R14: 0000000000000000 R15: 0000000000000282
FS:  00007f2ab01108c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcdbf6d190 CR3: 000000023aa03000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4e fb                	rex.WRX sti 
   2:	09 4c 89 e3          	or     %ecx,-0x1d(%rcx,%rcx,4)
   6:	31 ff                	xor    %edi,%edi
   8:	48 d3 eb             	shr    %cl,%rbx
   b:	48 89 de             	mov    %rbx,%rsi
   e:	e8 90 25 37 00       	callq  0x3725a3
  13:	48 85 db             	test   %rbx,%rbx
  16:	75 0d                	jne    0x25
  18:	e8 f6 23 37 00       	callq  0x372413
  1d:	4c 89 e0             	mov    %r12,%rax
  20:	5b                   	pop    %rbx
  21:	5d                   	pop    %rbp
  22:	41 5c                	pop    %r12
  24:	c3                   	retq   
  25:	e8 e9 23 37 00       	callq  0x372413
  2a:	0f 0b                	ud2     <-- trapping instruction
  2c:	e8 e2 23 37 00       	callq  0x372413
  31:	48 c7 c0 10 30 e7 89 	mov    $0xffffffff89e73010,%rax
  38:	48                   	rex.W
  39:	ba 00 00 00 00       	mov    $0x0,%edx
  3e:	00 fc                	add    %bh,%ah