loop0: detected capacity change from 0 to 64 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5325 at fs/buffer.c:1189 mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1189 Modules linked in: CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #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:mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1189 Code: 4c 89 f7 e8 a9 bb dd ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 94 33 fc ff e8 6f 3d 7a ff eb 8c e8 68 3d 7a ff 90 <0f> 0b 90 e9 95 fd ff ff e8 5a 3d 7a ff 90 0f 0b 90 e9 bf fd ff ff RSP: 0018:ffffc9000f59f900 EFLAGS: 00010293 RAX: ffffffff82461ee8 RBX: ffff888043af6bc8 RCX: ffff88803ee84880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff11002335401 R08: ffff888043af6bcf R09: 1ffff1100875ed79 R10: dffffc0000000000 R11: ffffed100875ed7a R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff829b2090 R15: ffff8880119aa788 FS: 0000000000000000(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4e4329168 CR3: 000000001142b000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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+0x1d1/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6ad/0x22e0 kernel/exit.c:955 do_group_exit+0x21c/0x2d0 kernel/exit.c:1104 get_signal+0x1286/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111 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: 0033:0x7fef8938e929 Code: Unable to access opcode bytes at 0x7fef8938e8ff. RSP: 002b:00007fef8a192038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: 0000000000010000 RBX: 00007fef895b5fa0 RCX: 00007fef8938e929 RDX: 00000000fffffecc RSI: 0000200000000000 RDI: 0000000000000009 RBP: 00007fef89410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fef895b5fa0 R15: 00007ffc34dba2b8