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: 1 UID: 0 PID: 8165 Comm: syz.1.642 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:ffffc9000359f6d8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888028c0c900 RSI: ffffffff81f5baca RDI: ffff888028c0cd84
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff908203d7 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea0000d2ccc0 R14: 0000000000000000 R15: 1ffff920006b3f05
FS:  00007fd324a6c6c0(0000) GS:ffff8880d6b08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c348b04 CR3: 000000005f937000 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_shared_fault mm/memory.c:5762 [inline]
 do_fault mm/memory.c:5836 [inline]
 do_pte_missing+0x1a6/0x3ba0 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:__put_user_8+0xd/0x20 arch/x86/lib/putuser.S:115
Code: 89 01 31 c9 0f 01 ca c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <48> 89 01 31 c9 0f 01 ca e9 46 80 03 00 66 0f 1f 44 00 00 90 90 90
RSP: 0018:ffffc9000359fee0 EFLAGS: 00050206
RAX: 00007fd324a2b000 RBX: 0000000000000000 RCX: 0000200000000100
RDX: 1ffff11005cdd08d RSI: ffffffff8252c33e RDI: ffff88802e6e8468
RBP: 0000200000000100 R08: fd703bd6b703c0ea R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802e6e8440
R13: 00000000000007ff R14: 0000000000000000 R15: 0000000000000000
 __do_sys_io_setup fs/aio.c:1402 [inline]
 __se_sys_io_setup fs/aio.c:1382 [inline]
 __x64_sys_io_setup+0x12b/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: 0033:0x7fd323b8f6c9
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:00007fd324a6c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ce
RAX: ffffffffffffffda RBX: 00007fd323de6090 RCX: 00007fd323b8f6c9
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 00000000000007ff
RBP: 00007fd323c11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd323de6128 R14: 00007fd323de6090 R15: 00007ffe8f0230f8
 </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:ffffc9000359f6d8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888028c0c900 RSI: ffffffff81f5baca RDI: ffff888028c0cd84
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff908203d7 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea0000d2ccc0 R14: 0000000000000000 R15: 1ffff920006b3f05
FS:  00007fd324a6c6c0(0000) GS:ffff8880d6b08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c348b04 CR3: 000000005f937000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	89 01                	mov    %eax,(%rcx)
   2:	31 c9                	xor    %ecx,%ecx
   4:	0f 01 ca             	clac
   7:	c3                   	ret
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   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:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	48 89 cb             	mov    %rcx,%rbx
  20:	48 c1 fb 3f          	sar    $0x3f,%rbx
  24:	48 09 d9             	or     %rbx,%rcx
  27:	0f 01 cb             	stac
* 2a:	48 89 01             	mov    %rax,(%rcx) <-- trapping instruction
  2d:	31 c9                	xor    %ecx,%ecx
  2f:	0f 01 ca             	clac
  32:	e9 46 80 03 00       	jmp    0x3807d
  37:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop