smpboot_thread_fn+0x3d3/0xaa0 kernel/smpboot.c:160
 kthread+0x370/0x450 kernel/kthread.c:467
 ret_from_fork+0x754/0xd80 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:858!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 9966 Comm: syz.4.1219 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__filemap_add_folio+0xfcf/0x1280 mm/filemap.c:858
Code: 58 c5 ff 48 c7 c6 c0 2f bd 8b 4c 89 ef e8 d9 3f 12 00 90 0f 0b e8 f1 57 c5 ff 48 c7 c6 20 30 bd 8b 4c 89 ef e8 c2 3f 12 00 90 <0f> 0b e8 da 57 c5 ff 90 0f 0b 90 e9 4b fe ff ff e8 cc 57 c5 ff 90
RSP: 0018:ffffc90004e57820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000112cc0 RCX: 0000000000000000
RDX: ffff888029244900 RSI: ffffffff82558288 RDI: ffff888029244d84
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea0000fa6680 R14: 0000000000000000 R15: 1ffff920009caf2e
FS:  000055556960f500(0000) GS:ffff8880d644a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000005c0 CR3: 000000005af81000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 filemap_add_folio+0x1d8/0x690 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:456 [inline]
 page_cache_ra_order+0x614/0xf30 mm/readahead.c:515
 do_sync_mmap_readahead mm/filemap.c:3400 [inline]
 filemap_fault+0x191a/0x2eb0 mm/filemap.c:3549
 __do_fault+0x10d/0x550 mm/memory.c:5355
 do_shared_fault mm/memory.c:5854 [inline]
 do_fault+0x2db/0x1a00 mm/memory.c:5928
 do_pte_missing mm/memory.c:4469 [inline]
 handle_pte_fault mm/memory.c:6308 [inline]
 __handle_mm_fault+0x180f/0x2b60 mm/memory.c:6446
 handle_mm_fault+0x36d/0xa20 mm/memory.c:6615
 do_user_addr_fault+0x5a3/0x12f0 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7efce436c808
Code: 66 89 74 17 02 88 0f c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17 f0 c3 0f 1f 44 00 00 48 8b 4c 16 f8 48 8b 36 <48> 89 37 48 89 4c 17 f8 c3 62 e1 fe 28 6f 54 16 ff 62 e1 fe 28 6f
RSP: 002b:00007fff4d8e5428 EFLAGS: 00010206
RAX: 00002000000005c0 RBX: 0000000000000004 RCX: 00306d656d6e2f76
RDX: 000000000000000b RSI: 656d6e2f7665642f RDI: 00002000000005c0
RBP: fffffffffffffffe R08: 0000001b32920000 R09: 0000000000000001
R10: 7ffffffffffffff4 R11: 0000000000000009 R12: 00007fff4d8e5550
R13: 00007efce4615fac R14: 0000000000022b27 R15: 00007efce4615fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xfcf/0x1280 mm/filemap.c:858
Code: 58 c5 ff 48 c7 c6 c0 2f bd 8b 4c 89 ef e8 d9 3f 12 00 90 0f 0b e8 f1 57 c5 ff 48 c7 c6 20 30 bd 8b 4c 89 ef e8 c2 3f 12 00 90 <0f> 0b e8 da 57 c5 ff 90 0f 0b 90 e9 4b fe ff ff e8 cc 57 c5 ff 90
RSP: 0018:ffffc90004e57820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000112cc0 RCX: 0000000000000000
RDX: ffff888029244900 RSI: ffffffff82558288 RDI: ffff888029244d84
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea0000fa6680 R14: 0000000000000000 R15: 1ffff920009caf2e
FS:  000055556960f500(0000) GS:ffff8880d644a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000005c0 CR3: 000000005af81000 CR4: 0000000000352ef0