assertion failed: folio_test_private(folio) && folio_get_private(folio), in fs/btrfs/subpage.c:154 ------------[ cut here ]------------ kernel BUG at fs/btrfs/subpage.c:154! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:btrfs_subpage_assert+0x43f/0x4e0 fs/btrfs/subpage.c:154 Code: a2 84 fd eb 05 e8 a1 a2 84 fd 48 c7 c7 00 ca 5c 8c 48 c7 c6 a0 cf 5c 8c 48 c7 c2 a0 ca 5c 8c b9 9a 00 00 00 e8 f2 86 e4 fc 90 <0f> 0b e8 7a a2 84 fd 4c 89 ff 48 c7 c6 00 d1 5c 8c e8 2b e9 e4 fc RSP: 0018:ffffc9000e40f438 EFLAGS: 00010246 RAX: 0000000000000062 RBX: 0000000000000000 RCX: 6d0ee186fbcf1c00 RDX: ffffc90020001000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffea00003a7300 R08: ffffc9000e40f1c7 R09: 1ffff92001c81e38 R10: dffffc0000000000 R11: fffff52001c81e39 R12: 1ffffd4000074e61 R13: ffff88804ff70000 R14: 1ffffd4000074e60 R15: ffffea00003a7300 FS: 00007f71bcf026c0(0000) GS:ffff88808c2c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f71bcee09a0 CR3: 00000000124df000 CR4: 0000000000352ef0 Call Trace: btrfs_subpage_set_fixup_dirty fs/btrfs/subpage.c:529 [inline] btrfs_folio_set_fixup_dirty+0x475/0xc70 fs/btrfs/subpage.c:568 btrfs_data_dirty_folio+0x1c7/0x240 fs/btrfs/inode.c:10802 bio_set_pages_dirty+0x372/0xa70 block/bio.c:1734 __blkdev_direct_IO+0x821/0xf60 block/fops.c:249 blkdev_direct_IO+0x121d/0x17b0 block/fops.c:435 blkdev_read_iter+0x223/0x420 block/fops.c:816 aio_read+0x33a/0x4d0 fs/aio.c:1656 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x774/0x13d0 fs/aio.c:2106 __do_sys_io_submit fs/aio.c:2165 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2135 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f71bbf9e159 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:00007f71bcf01fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f71bc226090 RCX: 00007f71bbf9e159 RDX: 00002000000000c0 RSI: 00000000000000ca RDI: 00007f71bcee1000 RBP: 00007f71bc03503b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f71bc226128 R14: 00007f71bc226090 R15: 00007ffd4eb298c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btrfs_subpage_assert+0x43f/0x4e0 fs/btrfs/subpage.c:154 Code: a2 84 fd eb 05 e8 a1 a2 84 fd 48 c7 c7 00 ca 5c 8c 48 c7 c6 a0 cf 5c 8c 48 c7 c2 a0 ca 5c 8c b9 9a 00 00 00 e8 f2 86 e4 fc 90 <0f> 0b e8 7a a2 84 fd 4c 89 ff 48 c7 c6 00 d1 5c 8c e8 2b e9 e4 fc RSP: 0018:ffffc9000e40f438 EFLAGS: 00010246 RAX: 0000000000000062 RBX: 0000000000000000 RCX: 6d0ee186fbcf1c00 RDX: ffffc90020001000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffea00003a7300 R08: ffffc9000e40f1c7 R09: 1ffff92001c81e38 R10: dffffc0000000000 R11: fffff52001c81e39 R12: 1ffffd4000074e61 R13: ffff88804ff70000 R14: 1ffffd4000074e60 R15: ffffea00003a7300 FS: 00007f71bcf026c0(0000) GS:ffff88808c2c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f71bcee09a0 CR3: 00000000124df000 CR4: 0000000000352ef0