__fput+0x5f8/0x8a0 fs/file_table.c:430 task_work_run+0x24f/0x310 kernel/task_work.c:180 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+0x168/0x360 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:1507! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 7579 Comm: syz.4.227 Not tainted 6.10.0-rc7-syzkaller-00025-ga19ea421490d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:folio_unlock+0x18b/0x2f0 mm/filemap.c:1507 Code: 4c 89 f0 48 25 ff 0f 00 00 74 62 e8 4f d8 c9 ff e9 eb fe ff ff e8 45 d8 c9 ff 4c 89 f7 48 c7 c6 60 8c d3 8b e8 26 c2 10 00 90 <0f> 0b e8 2e d8 c9 ff 4c 89 f7 48 c7 c6 60 95 d3 8b e8 0f c2 10 00 RSP: 0018:ffffc90002d6f108 EFLAGS: 00010246 RAX: faa235f51471b800 RBX: 1ffffd40002ee3a0 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: 0000000000000001 RBP: 00fff0000000412c R08: ffffffff92f716bf R09: 1ffffffff25ee2d7 R10: dffffc0000000000 R11: fffffbfff25ee2d8 R12: ffffea0001771d08 R13: 1ffffd40002ee3a1 R14: ffffea0001771d00 R15: dffffc0000000000 FS: 00007f4d623806c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020006000 CR3: 000000002dcfc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __extent_writepage fs/btrfs/extent_io.c:1519 [inline] extent_write_cache_pages fs/btrfs/extent_io.c:2173 [inline] btrfs_writepages+0x1fab/0x26f0 fs/btrfs/extent_io.c:2294 do_writepages+0x359/0x870 mm/page-writeback.c:2656 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 fs/btrfs/file.c:4066 [inline] start_ordered_ops fs/btrfs/file.c:1753 [inline] btrfs_sync_file+0x2b4/0x1040 fs/btrfs/file.c:1828 generic_write_sync include/linux/fs.h:2794 [inline] btrfs_do_write_iter+0xb84/0x10a0 fs/btrfs/file.c:1705 new_sync_write fs/read_write.c:497 [inline] vfs_write+0xa72/0xc90 fs/read_write.c:590 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 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: 0033:0x7f4d61575bd9 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:00007f4d62380048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4d61704110 RCX: 00007f4d61575bd9 RDX: 0000000000000063 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007f4d615e4e60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f4d61704110 R15: 00007fff8a3c9c48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_unlock+0x18b/0x2f0 mm/filemap.c:1507 Code: 4c 89 f0 48 25 ff 0f 00 00 74 62 e8 4f d8 c9 ff e9 eb fe ff ff e8 45 d8 c9 ff 4c 89 f7 48 c7 c6 60 8c d3 8b e8 26 c2 10 00 90 <0f> 0b e8 2e d8 c9 ff 4c 89 f7 48 c7 c6 60 95 d3 8b e8 0f c2 10 00 RSP: 0018:ffffc90002d6f108 EFLAGS: 00010246 RAX: faa235f51471b800 RBX: 1ffffd40002ee3a0 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: 0000000000000001 RBP: 00fff0000000412c R08: ffffffff92f716bf R09: 1ffffffff25ee2d7 R10: dffffc0000000000 R11: fffffbfff25ee2d8 R12: ffffea0001771d08 R13: 1ffffd40002ee3a1 R14: ffffea0001771d00 R15: dffffc0000000000 FS: 00007f4d623806c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3484cbb000 CR3: 000000002dcfc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400