process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/filemap.c:870!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 8825 Comm: syz.1.831 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:870
Code: 52 c7 ff 48 c7 c6 60 70 99 8b 4c 89 ef e8 bd 6b 11 00 90 0f 0b e8 e5 52 c7 ff 48 c7 c6 c0 70 99 8b 4c 89 ef e8 a6 6b 11 00 90 <0f> 0b e8 ce 52 c7 ff 90 0f 0b 90 e9 f2 fb ff ff e8 c0 52 c7 ff 48
RSP: 0018:ffffc90006f5f6d8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888029852480 RSI: ffffffff81f5baca RDI: ffff888029852904
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff908203d7 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea0000958680 R14: 0000000000000000 R15: 1ffff92000debf05
FS:  00007fc51fc896c0(0000) GS:ffff8880d6c08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d64a65d58 CR3: 0000000057be5000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 filemap_add_folio+0x19a/0x610 mm/filemap.c:978
 ra_alloc_folio mm/readahead.c:453 [inline]
 page_cache_ra_order+0x635/0xf20 mm/readahead.c:512
 do_sync_mmap_readahead mm/filemap.c:3340 [inline]
 filemap_fault+0x1583/0x29a0 mm/filemap.c:3489
 __do_fault+0x10d/0x490 mm/memory.c:5280
 do_read_fault mm/memory.c:5698 [inline]
 do_fault mm/memory.c:5832 [inline]
 do_pte_missing+0xf4a/0x3ba0 mm/memory.c:4361
 handle_pte_fault mm/memory.c:6177 [inline]
 __handle_mm_fault+0x1556/0x2aa0 mm/memory.c:6318
 handle_mm_fault+0x589/0xd10 mm/memory.c:6487
 do_user_addr_fault+0x7a6/0x1370 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0010:__get_user_8+0x14/0x30 arch/x86/lib/getuser.S:103
Code: ca e9 00 35 04 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 ba 00 f0 ff ff ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 01 cb <48> 8b 10 31 c0 0f 01 ca e9 cf 34 04 00 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90006f5fee0 EFLAGS: 00050283
RAX: 0000200000000040 RBX: ffffc90006f5ff48 RCX: ffffc90006f5fe84
RDX: 00007ffffffff000 RSI: ffffffff8252c2ab RDI: ffffffff8bf07040
RBP: 0000200000000040 R08: 0ca65df6ac053473 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 00000000000000ce
R13: 00000000000007ff R14: 0000000000000000 R15: 0000000000000000
 __do_sys_io_setup fs/aio.c:1388 [inline]
 __se_sys_io_setup fs/aio.c:1382 [inline]
 __x64_sys_io_setup+0x73/0x210 fs/aio.c:1382
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc51ed8f6c9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc51fc89038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ce
RAX: ffffffffffffffda RBX: 00007fc51efe6090 RCX: 00007fc51ed8f6c9
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 00000000000007ff
RBP: 00007fc51ee11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc51efe6128 R14: 00007fc51efe6090 R15: 00007ffefd87ae98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:870
Code: 52 c7 ff 48 c7 c6 60 70 99 8b 4c 89 ef e8 bd 6b 11 00 90 0f 0b e8 e5 52 c7 ff 48 c7 c6 c0 70 99 8b 4c 89 ef e8 a6 6b 11 00 90 <0f> 0b e8 ce 52 c7 ff 90 0f 0b 90 e9 f2 fb ff ff e8 c0 52 c7 ff 48
RSP: 0018:ffffc90006f5f6d8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888029852480 RSI: ffffffff81f5baca RDI: ffff888029852904
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff908203d7 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea0000958680 R14: 0000000000000000 R15: 1ffff92000debf05
FS:  00007fc51fc896c0(0000) GS:ffff8880d6c08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d64a65d58 CR3: 0000000057be5000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	ca e9 00             	lret   $0xe9
   3:	35 04 00 90 90       	xor    $0x90900004,%eax
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	48 ba 00 f0 ff ff ff 	movabs $0x7ffffffff000,%rdx
  1d:	7f 00 00
  20:	48 39 d0             	cmp    %rdx,%rax
  23:	48 0f 47 c2          	cmova  %rdx,%rax
  27:	0f 01 cb             	stac
* 2a:	48 8b 10             	mov    (%rax),%rdx <-- trapping instruction
  2d:	31 c0                	xor    %eax,%eax
  2f:	0f 01 ca             	clac
  32:	e9 cf 34 04 00       	jmp    0x43506
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)