loop0: detected capacity change from 0 to 2048 UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) loop0: detected capacity change from 2048 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. ======================================================= syz.0.0: attempt to access beyond end of device loop0: rw=2049, sector=128, nr_sectors = 1 limit=0 Buffer I/O error on dev loop0, logical block 128, lost sync page write loop0: detected capacity change from 0 to 2047 BUG: unable to handle page fault for address: ffffed100c14200d #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 5ffcd067 P4D 5ffcd067 PUD 2fff7067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:udf_close_lvid+0x14c/0x9a0 fs/udf/super.c:2090 Code: dc 49 83 c4 50 0f 84 f3 00 00 00 49 8d bf c0 00 00 00 48 89 7c 24 40 31 f6 e8 30 b6 a9 08 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 41 05 00 00 4c 89 7c 24 18 4c 89 74 24 RSP: 0018:ffffc9000d42fc00 EFLAGS: 00010a02 RAX: 1ffff1100c14200d RBX: ffff88804ca10000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8c610840 RDI: ffff888060a10068 RBP: ffffc9000d42fcf0 R08: ffffffff901d09af R09: 1ffffffff203a135 R10: dffffc0000000000 R11: fffffbfff203a136 R12: ffff888060a10050 R13: dffffc0000000000 R14: 1ffff92001a85f8c R15: ffff888032acdc00 FS: 00007efd4acc36c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100c14200d CR3: 00000000407de000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_reconfigure+0x315/0x490 fs/udf/super.c:676 reconfigure_super+0x445/0x880 fs/super.c:1083 vfs_cmd_reconfigure fs/fsopen.c:262 [inline] vfs_fsconfig_locked fs/fsopen.c:291 [inline] __do_sys_fsconfig fs/fsopen.c:472 [inline] __se_sys_fsconfig+0xb68/0xf70 fs/fsopen.c:344 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efd49f7e719 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:00007efd4acc3038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007efd4a135f80 RCX: 00007efd49f7e719 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007efd49ff132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007efd4a135f80 R15: 00007ffc6ac33be8 Modules linked in: CR2: ffffed100c14200d ---[ end trace 0000000000000000 ]--- RIP: 0010:udf_close_lvid+0x14c/0x9a0 fs/udf/super.c:2090 Code: dc 49 83 c4 50 0f 84 f3 00 00 00 49 8d bf c0 00 00 00 48 89 7c 24 40 31 f6 e8 30 b6 a9 08 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 41 05 00 00 4c 89 7c 24 18 4c 89 74 24 RSP: 0018:ffffc9000d42fc00 EFLAGS: 00010a02 RAX: 1ffff1100c14200d RBX: ffff88804ca10000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8c610840 RDI: ffff888060a10068 RBP: ffffc9000d42fcf0 R08: ffffffff901d09af R09: 1ffffffff203a135 R10: dffffc0000000000 R11: fffffbfff203a136 R12: ffff888060a10050 R13: dffffc0000000000 R14: 1ffff92001a85f8c R15: ffff888032acdc00 FS: 00007efd4acc36c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed100c14200d CR3: 00000000407de000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 49 83 c4 50 add $0x50,%r12 4: 0f 84 f3 00 00 00 je 0xfd a: 49 8d bf c0 00 00 00 lea 0xc0(%r15),%rdi 11: 48 89 7c 24 40 mov %rdi,0x40(%rsp) 16: 31 f6 xor %esi,%esi 18: e8 30 b6 a9 08 call 0x8a9b64d 1d: 49 8d 7c 24 18 lea 0x18(%r12),%rdi 22: 48 89 f8 mov %rdi,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 41 05 00 00 jne 0x577 36: 4c 89 7c 24 18 mov %r15,0x18(%rsp) 3b: 4c rex.WR 3c: 89 .byte 0x89 3d: 74 24 je 0x63