Buffer I/O error on dev loop0, logical block 62, lost sync page write Buffer I/O error on dev loop0, logical block 2, lost async page write ------------[ cut here ]------------ WARNING: fs/buffer.c:1188 at mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1188, CPU#1: syz-executor/5827 Modules linked in: CPU: 1 UID: 0 PID: 5827 Comm: syz-executor Not tainted 6.16.0-rc3-next-20250627-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1188 Code: 4c 89 f7 e8 d9 ba dd ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 34 31 fc ff e8 1f bb 79 ff eb 8c e8 18 bb 79 ff 90 <0f> 0b 90 e9 95 fd ff ff e8 0a bb 79 ff 90 0f 0b 90 e9 bf fd ff ff RSP: 0018:ffffc9000408fce0 EFLAGS: 00010293 RAX: ffffffff82461748 RBX: ffff8880324b8910 RCX: ffff88802a3b5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff1100ef10c01 R08: ffff8880324b8917 R09: 1ffff11006497122 R10: dffffc0000000000 R11: ffffed1006497123 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff829b31f0 R15: ffff888077886788 FS: 0000555582683500(0000) GS:ffff888125d1e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c44e611 CR3: 000000007dd0e000 CR4: 00000000003526f0 Call Trace: hfs_put_super+0x49/0x60 fs/hfs/super.c:51 generic_shutdown_super+0x135/0x2c0 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1755 deactivate_locked_super+0xb9/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1499f8fc57 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd9711ac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f149a010925 RCX: 00007f1499f8fc57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd9711ad20 RBP: 00007ffd9711ad20 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd9711bdb0 R13: 00007f149a010925 R14: 0000000000014ab2 R15: 00007ffd9711bdf0