smpboot_thread_fn+0x3d3/0xaa0 kernel/smpboot.c:160
 kthread+0x370/0x450 kernel/kthread.c:436
 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: 3 UID: 0 PID: 2975 Comm: syz.8.8300 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: 35 c5 ff 48 c7 c6 20 37 bd 8b 4c 89 ef e8 e9 3f 12 00 90 0f 0b e8 01 35 c5 ff 48 c7 c6 80 37 bd 8b 4c 89 ef e8 d2 3f 12 00 90 <0f> 0b e8 ea 34 c5 ff 90 0f 0b 90 e9 4b fe ff ff e8 dc 34 c5 ff 90
RSP: 0018:ffffc9000578ecc8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc90033e79000
RDX: 0000000000080000 RSI: ffffffff8255eb68 RDI: ffff88801f2ba984
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea0000c13800 R14: 0000000000000000 R15: 1ffff92000af1dc3
FS:  00007f97687f66c0(0000) GS:ffff8880d663f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c44ca2f CR3: 0000000012f97000 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:3405 [inline]
 filemap_fault+0x191a/0x2eb0 mm/filemap.c:3554
 __do_fault+0x10d/0x550 mm/memory.c:5364
 do_read_fault mm/memory.c:5799 [inline]
 do_fault+0xabb/0x1990 mm/memory.c:5933
 do_pte_missing mm/memory.c:4477 [inline]
 handle_pte_fault mm/memory.c:6317 [inline]
 __handle_mm_fault+0x180f/0x2b60 mm/memory.c:6455
 handle_mm_fault+0x36d/0xa20 mm/memory.c:6624
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0xf9c/0x34d0 mm/gup.c:1428
 __get_user_pages_locked mm/gup.c:1692 [inline]
 __gup_longterm_locked+0x87d/0x16f0 mm/gup.c:2476
 gup_fast_fallback+0x18c6/0x2460 mm/gup.c:3209
 pin_user_pages_fast+0xa7/0xf0 mm/gup.c:3315
 iov_iter_extract_user_pages lib/iov_iter.c:1763 [inline]
 iov_iter_extract_pages+0xa0d/0x1ef0 lib/iov_iter.c:1826
 iov_iter_extract_bvecs+0x10e/0xf40 lib/iov_iter.c:1917
 bio_iov_iter_get_pages+0x26a/0x970 block/bio.c:1287
 blkdev_iov_iter_get_pages block/fops.c:49 [inline]
 __blkdev_direct_IO block/fops.c:219 [inline]
 blkdev_direct_IO+0x1302/0x1fb0 block/fops.c:436
 blkdev_direct_write block/fops.c:722 [inline]
 blkdev_write_iter+0x703/0xd70 block/fops.c:790
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6ac/0x1070 fs/read_write.c:688
 ksys_write+0x12a/0x250 fs/read_write.c:740
 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
RIP: 0033:0x7f976a59c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f97687f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f976a815fa0 RCX: 00007f976a59c799
RDX: 00000000fffffd2c RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f976a632c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f976a816038 R14: 00007f976a815fa0 R15: 00007ffe2d69f1d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xfcf/0x1280 mm/filemap.c:858
Code: 35 c5 ff 48 c7 c6 20 37 bd 8b 4c 89 ef e8 e9 3f 12 00 90 0f 0b e8 01 35 c5 ff 48 c7 c6 80 37 bd 8b 4c 89 ef e8 d2 3f 12 00 90 <0f> 0b e8 ea 34 c5 ff 90 0f 0b 90 e9 4b fe ff ff e8 dc 34 c5 ff 90
RSP: 0018:ffffc9000578ecc8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc90033e79000
RDX: 0000000000080000 RSI: ffffffff8255eb68 RDI: ffff88801f2ba984
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea0000c13800 R14: 0000000000000000 R15: 1ffff92000af1dc3
FS:  00007f97687f66c0(0000) GS:ffff8880d663f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c44ca2f CR3: 0000000012f97000 CR4: 0000000000352ef0