EXT4-fs error (device loop0): ext4_validate_block_bitmap:432: comm syz.0.0: bg 0: block 7: invalid block bitmap ------------[ cut here ]------------ WARNING: fs/ext4/inode.c:3965 at ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3965, CPU#0: syz.0.0/5348 Modules linked in: CPU: 0 UID: 0 PID: 5348 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~bpo12+1 04/01/2014 RIP: 0010:ext4_dirty_folio+0x167/0x1b0 fs/ext4/inode.c:3965 Code: af ba ab ff 49 83 3f 00 74 1a e8 04 10 44 ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 1f ef cf ff e8 ea 0f 44 ff 90 <0f> 0b 90 eb e0 e8 df 0f 44 ff 90 0f 0b 90 eb a7 e8 d4 0f 44 ff 48 RSP: 0018:ffffc9000b2b7538 EFLAGS: 00010283 RAX: ffffffff827cf776 RBX: ffffea00008c04c0 RCX: 0000000000100000 RDX: ffffc90021a24000 RSI: 000000000000861e RDI: 000000000000861f RBP: 1ffffd4000118098 R08: ffffea00008c04c7 R09: 1ffffd4000118098 R10: dffffc0000000000 R11: fffff94000118099 R12: ffff8880475dab38 R13: 1ffffd4000118099 R14: 0000000000000001 R15: ffffea00008c04e8 FS: 00007f8e5c1d46c0(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc2bc50f52 CR3: 0000000043e21000 CR4: 0000000000352ef0 Call Trace: bio_set_pages_dirty+0xf3/0x170 block/bio.c:1535 __blkdev_direct_IO+0x846/0xf80 block/fops.c:249 blkdev_direct_IO+0x127e/0x1800 block/fops.c:437 blkdev_read_iter+0x23d/0x440 block/fops.c:840 aio_read+0x311/0x470 fs/aio.c:1603 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x755/0x1430 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0x185/0x320 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8e5fd8f7c9 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:00007f8e5c1d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f8e5ffe6180 RCX: 00007f8e5fd8f7c9 RDX: 00002000000000c0 RSI: 00000000000000ca RDI: 00007f8e60b1f000 RBP: 00007f8e5fe13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8e5ffe6218 R14: 00007f8e5ffe6180 R15: 00007ffe9f75d318