UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) BUG: unable to handle page fault for address: ffffed101a485f22 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffee067 P4D 23ffee067 PUD 13fff5067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5065 Comm: syz-executor308 Not tainted 6.2.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:udf_close_lvid+0x146/0x970 fs/udf/super.c:2072 Code: dc 49 83 c4 50 0f 84 ed 00 00 00 49 8d bf c0 00 00 00 48 89 7c 24 40 31 f6 e8 d6 11 b7 07 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 17 05 00 00 4c 89 7c 24 18 4c 89 74 24 48 RSP: 0018:ffffc90003cafa80 EFLAGS: 00010a06 RAX: 1ffff1101a485f22 RBX: ffff888074824000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8aedcd40 RDI: ffff8880d242f910 RBP: ffffc90003cafb78 R08: dffffc0000000000 R09: fffffbfff1d2cd7e R10: fffffbfff1d2cd7e R11: 1ffffffff1d2cd7d R12: ffff8880d242f8f8 R13: dffffc0000000000 R14: 1ffff92000795f5c R15: ffff888077654800 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101a485f22 CR3: 000000000d08e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_put_super+0xc9/0x160 fs/udf/super.c:2359 generic_shutdown_super+0x130/0x310 fs/super.c:492 kill_block_super+0x79/0xd0 fs/super.c:1386 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x494/0x520 fs/namespace.c:1291 task_work_run+0x243/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x644/0x2150 kernel/exit.c:867 do_group_exit+0x1fd/0x2b0 kernel/exit.c:1012 __do_sys_exit_group kernel/exit.c:1023 [inline] __se_sys_exit_group kernel/exit.c:1021 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1021 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcc18e63799 Code: Unable to access opcode bytes at 0x7fcc18e6376f. RSP: 002b:00007ffc45351c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fcc18ed4410 RCX: 00007fcc18e63799 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000001 R10: 000080001d00c0d0 R11: 0000000000000246 R12: 00007fcc18ed4410 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 Modules linked in: CR2: ffffed101a485f22 ---[ end trace 0000000000000000 ]--- RIP: 0010:udf_close_lvid+0x146/0x970 fs/udf/super.c:2072 Code: dc 49 83 c4 50 0f 84 ed 00 00 00 49 8d bf c0 00 00 00 48 89 7c 24 40 31 f6 e8 d6 11 b7 07 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 17 05 00 00 4c 89 7c 24 18 4c 89 74 24 48 RSP: 0018:ffffc90003cafa80 EFLAGS: 00010a06 RAX: 1ffff1101a485f22 RBX: ffff888074824000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8aedcd40 RDI: ffff8880d242f910 RBP: ffffc90003cafb78 R08: dffffc0000000000 R09: fffffbfff1d2cd7e R10: fffffbfff1d2cd7e R11: 1ffffffff1d2cd7d R12: ffff8880d242f8f8 R13: dffffc0000000000 R14: 1ffff92000795f5c R15: ffff888077654800 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101a485f22 CR3: 000000000d08e000 CR4: 00000000003506f0 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 ed 00 00 00 je 0xf7 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 d6 11 b7 07 callq 0x7b711f3 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 8a 04 28 mov (%rax,%r13,1),%al <-- trapping instruction 2d: 84 c0 test %al,%al 2f: 0f 85 17 05 00 00 jne 0x54c 35: 4c 89 7c 24 18 mov %r15,0x18(%rsp) 3a: 4c 89 74 24 48 mov %r14,0x48(%rsp)