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: 6209 Comm: syz.0.103 Not tainted 6.11.0-rc1-syzkaller-00044-g22f546873149 #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 b5 fb c0 fd 48 c7 c7 00 32 2e 8c 48 c7 c6 c0 32 2e 8c 48 c7 c2 a0 31 2e 8c b9 67 03 00 00 e8 d6 4a d7 07 90 <0f> 0b e8 fe 49 da 07 4c 89 ff be 08 00 00 00 e8 31 11 25 fe 4c 89 RSP: 0018:ffffc90015e57460 EFLAGS: 00010246 RAX: 0000000000000045 RBX: 00fff0000000402c RCX: 1a103d7603efad00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90015e57530 R08: ffffffff8173df2c R09: 1ffffffff1fece9d R10: dffffc0000000000 R11: fffffbfff1fece9e R12: 0000000000000001 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffea00011bb000 FS: 000055557bdde500(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555589997808 CR3: 000000006e5c6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __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 mm/filemap.c:436 [inline] filemap_flush+0xdf/0x130 mm/filemap.c:463 btrfs_release_file+0x117/0x130 fs/btrfs/file.c:1547 __fput+0x24a/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f75f97773b9 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:00007ffc4542ccd8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f75f9907a80 RCX: 00007f75f97773b9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f75f9907a80 R08: 0000000000000006 R09: 00007ffc4542cfbf R10: 00000000003ffbc4 R11: 0000000000000246 R12: 000000000001ceba R13: 00007ffc4542cdd0 R14: 00007ffc4542cdf0 R15: ffffffffffffffff </TASK> 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 b5 fb c0 fd 48 c7 c7 00 32 2e 8c 48 c7 c6 c0 32 2e 8c 48 c7 c2 a0 31 2e 8c b9 67 03 00 00 e8 d6 4a d7 07 90 <0f> 0b e8 fe 49 da 07 4c 89 ff be 08 00 00 00 e8 31 11 25 fe 4c 89 RSP: 0018:ffffc90015e57460 EFLAGS: 00010246 RAX: 0000000000000045 RBX: 00fff0000000402c RCX: 1a103d7603efad00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90015e57530 R08: ffffffff8173df2c R09: 1ffffffff1fece9d R10: dffffc0000000000 R11: fffffbfff1fece9e R12: 0000000000000001 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffea00011bb000 FS: 000055557bdde500(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110f2e01c7 CR3: 000000006e5c6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400