kernel_clone+0xfc/0x9a0 kernel/fork.c:2654
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2795
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:858!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 6929 Comm: syz.8.5530 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 00 30 bd 8b 4c 89 ef e8 d9 3f 12 00 90 0f 0b e8 f1 57 c5 ff 48 c7 c6 60 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:ffffc90005487820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000112c00 RCX: 0000000000000000
RDX: ffff88802d5ca480 RSI: ffffffff82558328 RDI: ffff88802d5ca904
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea00018e42c0 R14: 0000000000000000 R15: 1ffff92000a90f2e
FS:  000055557639c500(0000) GS:ffff8880d654a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000003c0 CR3: 000000004c1a9000 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: 0033:0x7f49a4f6ccc8
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:00007ffeac92b948 EFLAGS: 00010246
RAX: 00002000000003c0 RBX: 0000000000000004 RCX: 0031313230386c6e
RDX: 0000000000000008 RSI: 0031313230386c6e RDI: 00002000000003c0
RBP: fffffffffffffffe R08: 0000001b31120000 R09: 0000000000000001
R10: 7ffffffffffffff7 R11: 0000000000000009 R12: 00007ffeac92ba70
R13: 00007f49a521609c R14: 00000000000832bf R15: 00007f49a5216090
 </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 00 30 bd 8b 4c 89 ef e8 d9 3f 12 00 90 0f 0b e8 f1 57 c5 ff 48 c7 c6 60 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:ffffc90005487820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000112c00 RCX: 0000000000000000
RDX: ffff88802d5ca480 RSI: ffffffff82558328 RDI: ffff88802d5ca904
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea00018e42c0 R14: 0000000000000000 R15: 1ffff92000a90f2e
FS:  000055557639c500(0000) GS:ffff8880d664a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49a5f11ff8 CR3: 000000004c1a9000 CR4: 0000000000352ef0
DR0: 0000000000000007 DR1: 0000000000010005 DR2: 000000000000000f
DR3: 0000000000007fff DR6: 00000000ffff0ff0 DR7: 0000000000000400