loop0: detected capacity change from 0 to 64 Buffer I/O error on dev loop0, logical block 2, lost async page write Buffer I/O error on dev loop0, logical block 3, lost async page write ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5326 at fs/buffer.c:1186 mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1186 Modules linked in: CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00011-gf15d97df5afa #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:1186 Code: 4c 89 f7 e8 79 0d de ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 c4 34 fc ff e8 5f 18 7c ff eb 8c e8 58 18 7c ff 90 <0f> 0b 90 e9 95 fd ff ff e8 4a 18 7c ff 90 0f 0b 90 e9 bf fd ff ff RSP: 0018:ffffc9000d45f920 EFLAGS: 00010293 RAX: ffffffff8243a678 RBX: ffff88804277ae80 RCX: ffff88801f07c880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff11006779c01 R08: ffff88804277ae87 R09: 1ffff110084ef5d0 R10: dffffc0000000000 R11: ffffed10084ef5d1 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff82984110 R15: ffff888033bce780 FS: 0000000000000000(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f32db1ff000 CR3: 0000000050604000 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+0x132/0x2c0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xb9/0x130 fs/super.c:473 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1435 task_work_run+0x1d1/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x8d6/0x2550 kernel/exit.c:953 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102 get_signal+0x125e/0x1310 kernel/signal.c:3034 arch_do_signal_or_restart+0x95/0x780 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x8b/0x120 kernel/entry/common.c:218 do_syscall_64+0x103/0x210 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f32e338d41f Code: Unable to access opcode bytes at 0x7f32e338d3f5. RSP: 002b:00007f32e42b3df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: 0000000001860000 RBX: 0000000004000000 RCX: 00007f32e338d41f RDX: 0000000004000000 RSI: 00007f32d7200000 RDI: 0000000000000047 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000010586 R10: 0000200000020bc2 R11: 0000000000000293 R12: 0000000000000047 R13: 00007f32e42b3ef0 R14: 00007f32e42b3eb0 R15: 00007f32d7200000