assertion failed: folio_test_locked(folio), in fs/btrfs/subpage.c:871 ------------[ cut here ]------------ kernel BUG at fs/btrfs/subpage.c:871! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 5888 Comm: syz.4.60 Not tainted 6.10.0-syzkaller-12710-g3a7e02c040b1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:btrfs_folio_end_all_writers+0x55b/0x610 fs/btrfs/subpage.c:871 Code: e9 d3 fb ff ff e8 65 25 c1 fd 48 c7 c7 80 41 2e 8c 48 c7 c6 40 42 2e 8c 48 c7 c2 20 41 2e 8c b9 67 03 00 00 e8 96 37 d7 07 90 <0f> 0b e8 ee 36 da 07 4c 89 ff be 08 00 00 00 e8 b1 3c 25 fe 4c 89 RSP: 0018:ffffc900036c7280 EFLAGS: 00010246 RAX: 0000000000000045 RBX: 00fff00000004128 RCX: 85e4352c35dcae00 RDX: ffffc900088d9000 RSI: 0000000000017bd4 RDI: 0000000000017bd5 RBP: ffffc900036c7350 R08: ffffffff8173e03c R09: 1ffff920006d8df0 R10: dffffc0000000000 R11: fffff520006d8df1 R12: 0000000000000001 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffea0001648200 FS: 00007f45789ed6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005611021ac950 CR3: 000000002cedc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __extent_writepage fs/btrfs/extent_io.c:1597 [inline] extent_write_cache_pages fs/btrfs/extent_io.c:2251 [inline] btrfs_writepages+0x14d7/0x2760 fs/btrfs/extent_io.c:2373 do_writepages+0x35d/0x870 mm/page-writeback.c:2683 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:397 __filemap_fdatawrite_range mm/filemap.c:430 [inline] filemap_fdatawrite_range+0x120/0x180 mm/filemap.c:448 btrfs_fdatawrite_range+0x53/0xe0 fs/btrfs/file.c:3780 btrfs_wait_ordered_range+0x59/0x260 fs/btrfs/ordered-data.c:898 btrfs_fallocate+0xb6b/0x2030 fs/btrfs/file.c:3116 vfs_fallocate+0x553/0x6c0 fs/open.c:334 ksys_fallocate fs/open.c:357 [inline] __do_sys_fallocate fs/open.c:365 [inline] __se_sys_fallocate fs/open.c:363 [inline] __x64_sys_fallocate+0xbd/0x110 fs/open.c:363 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 RIP: 0033:0x7f4577b77299 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:00007f45789ed048 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f4577d05f80 RCX: 00007f4577b77299 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f4577be48e6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4577d05f80 R15: 00007fffbdd02fb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btrfs_folio_end_all_writers+0x55b/0x610 fs/btrfs/subpage.c:871 Code: e9 d3 fb ff ff e8 65 25 c1 fd 48 c7 c7 80 41 2e 8c 48 c7 c6 40 42 2e 8c 48 c7 c2 20 41 2e 8c b9 67 03 00 00 e8 96 37 d7 07 90 <0f> 0b e8 ee 36 da 07 4c 89 ff be 08 00 00 00 e8 b1 3c 25 fe 4c 89 RSP: 0018:ffffc900036c7280 EFLAGS: 00010246 RAX: 0000000000000045 RBX: 00fff00000004128 RCX: 85e4352c35dcae00 RDX: ffffc900088d9000 RSI: 0000000000017bd4 RDI: 0000000000017bd5 RBP: ffffc900036c7350 R08: ffffffff8173e03c R09: 1ffff920006d8df0 R10: dffffc0000000000 R11: fffff520006d8df1 R12: 0000000000000001 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffea0001648200 FS: 00007f45789ed6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fec9aed1000 CR3: 000000002cedc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400