loop0: detected capacity change from 0 to 64 loop0: detected capacity change from 64 to 0 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= Buffer I/O error on dev loop0, logical block 62, lost sync page write hfs: unable to read volume bitmap ------------[ cut here ]------------ !buffer_uptodate(bh) WARNING: fs/buffer.c:1180 at mark_buffer_dirty+0x299/0x440 fs/buffer.c:1180, CPU#0: syz.0.0/5322 Modules linked in: CPU: 0 UID: 0 PID: 5322 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:mark_buffer_dirty+0x299/0x440 fs/buffer.c:1180 Code: 4c 89 f7 e8 99 05 da ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 54 61 fb ff e8 1f 52 6e ff eb 8c e8 18 52 6e ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 0a 52 6e ff 90 0f 0b 90 e9 cf fd ff ff RSP: 0018:ffffc9000e1ffba8 EFLAGS: 00010283 RAX: ffffffff82574908 RBX: ffff888011b56ae0 RCX: 0000000000100000 RDX: ffffc9000ec42000 RSI: 0000000000002145 RDI: 0000000000002146 RBP: 1ffff110024bc401 R08: ffff888011b56ae7 R09: 1ffff1100236ad5c R10: dffffc0000000000 R11: ffffed100236ad5d R12: dffffc0000000000 R13: ffff8880125e2638 R14: ffff888055fbbc0b R15: ffff888055fb6492 FS: 00007fa3e5b046c0(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa3d8a3f000 CR3: 000000004467f000 CR4: 0000000000352ef0 Call Trace: hfs_mdb_commit+0x84b/0x1150 fs/hfs/mdb.c:328 hfs_sync_fs+0x1d/0x30 fs/hfs/super.c:38 sync_filesystem+0x1cf/0x230 fs/sync.c:66 hfs_reconfigure+0x66/0x270 fs/hfs/super.c:122 reconfigure_super+0x227/0x8a0 fs/super.c:1080 do_remount fs/namespace.c:3388 [inline] path_mount+0xdc5/0x10e0 fs/namespace.c:4138 do_mount fs/namespace.c:4159 [inline] __do_sys_mount fs/namespace.c:4348 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4325 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa3e4b9c629 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:00007fa3e5b04028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa3e4e15fa0 RCX: 00007fa3e4b9c629 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000 RBP: 00007fa3e4c32b39 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000013760f6 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa3e4e16038 R14: 00007fa3e4e15fa0 R15: 00007ffdfa6906d8