page: refcount:5 mapcount:0 mapping:ffff888044dc1710 index:0x30 pfn:0x54228
memcg:ffff88801c2de000
aops:btrfs_aops ino:107 dentry name(?):"bus"
flags: 0x4fff400000040ab(locked|waiters|uptodate|lru|private|writeback|node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff400000040ab ffffea00015089c8 ffffea0001508a48 ffff888044dc1710
raw: 0000000000000030 0000000000000001 00000005ffffffff ffff88801c2de000
page dumped because: VM_BUG_ON_FOLIO(folio_test_writeback(folio))
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x141c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE|__GFP_WRITE), pid 5335, tgid 5333 (syz.0.0), ts 58276005515, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_pages_noprof mm/mempolicy.c:2344 [inline]
 folio_alloc_noprof+0x128/0x180 mm/mempolicy.c:2351
 filemap_alloc_folio_noprof+0xdf/0x500 mm/filemap.c:1009
 __filemap_get_folio+0x446/0xbd0 mm/filemap.c:1951
 prepare_one_folio+0xb6/0xa20 fs/btrfs/file.c:906
 btrfs_buffered_write+0x6bd/0x1150 fs/btrfs/file.c:1233
 btrfs_direct_write+0x52d/0xa30 fs/btrfs/direct-io.c:951
 btrfs_do_write_iter+0x2a0/0x760 fs/btrfs/file.c:1396
 do_iter_readv_writev+0x600/0x880
 vfs_writev+0x376/0xba0 fs/read_write.c:1050
 do_pwritev fs/read_write.c:1146 [inline]
 __do_sys_pwritev2 fs/read_write.c:1204 [inline]
 __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page_owner free stack trace missing
------------[ cut here ]------------
kernel BUG at mm/page-writeback.c:3126!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 4065 Comm: kworker/u4:11 Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: btrfs-delalloc btrfs_work_helper
RIP: 0010:__folio_start_writeback+0xbf6/0x1040 mm/page-writeback.c:3126
Code: 25 ff 0f 00 00 0f 84 d3 00 00 00 e8 e4 bb c3 ff e9 ca f5 ff ff e8 da bb c3 ff 4c 89 f7 48 c7 c6 40 33 14 8c e8 db 20 10 00 90 <0f> 0b e8 c3 bb c3 ff 4c 89 f7 48 c7 c6 60 39 14 8c e8 c4 20 10 00
RSP: 0018:ffffc9000ff2f500 EFLAGS: 00010246
RAX: 372c6001b8bf8000 RBX: 0000000000000002 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8c0ad980 RDI: 0000000000000001
RBP: ffffc9000ff2f670 R08: ffffffff9432198f R09: 1ffffffff2864331
R10: dffffc0000000000 R11: fffffbfff2864332 R12: 0000000000000000
R13: 1ffff92001fe5eac R14: ffffea0001508a00 R15: ffff888044dc1710
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055693cd09740 CR3: 0000000011950000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_folio fs/btrfs/extent_io.c:187 [inline]
 __process_folios_contig+0x31c/0x540 fs/btrfs/extent_io.c:216
 submit_one_async_extent fs/btrfs/inode.c:1229 [inline]
 submit_compressed_extents+0xdb3/0x16e0 fs/btrfs/inode.c:1632
 run_ordered_work fs/btrfs/async-thread.c:245 [inline]
 btrfs_work_helper+0x56b/0xc40 fs/btrfs/async-thread.c:324
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__folio_start_writeback+0xbf6/0x1040 mm/page-writeback.c:3126
Code: 25 ff 0f 00 00 0f 84 d3 00 00 00 e8 e4 bb c3 ff e9 ca f5 ff ff e8 da bb c3 ff 4c 89 f7 48 c7 c6 40 33 14 8c e8 db 20 10 00 90 <0f> 0b e8 c3 bb c3 ff 4c 89 f7 48 c7 c6 60 39 14 8c e8 c4 20 10 00
RSP: 0018:ffffc9000ff2f500 EFLAGS: 00010246
RAX: 372c6001b8bf8000 RBX: 0000000000000002 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8c0ad980 RDI: 0000000000000001
RBP: ffffc9000ff2f670 R08: ffffffff9432198f R09: 1ffffffff2864331
R10: dffffc0000000000 R11: fffffbfff2864332 R12: 0000000000000000
R13: 1ffff92001fe5eac R14: ffffea0001508a00 R15: ffff888044dc1710
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c60065f028 CR3: 000000003be6e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400