BUG: unable to handle page fault for address: ffffed1018b072b3 #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: 5002 Comm: syz-executor279 Not tainted 6.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:udf_close_lvid.isra.0+0x104/0x550 fs/udf/super.c:2039 Code: c2 cc 9d fe 4c 8d b5 c0 00 00 00 31 f6 4c 89 f7 e8 41 e0 2c 07 48 8d 7b 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 88 03 00 00 RSP: 0018:ffffc90003a5fc30 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff8880c5839580 RCX: 0000000000000000 RDX: 1ffff11018b072b3 RSI: 0000000000000002 RDI: ffff8880c5839598 RBP: ffff88814330ec00 R08: 0000000000000000 R09: ffffffff8e7a97d7 R10: fffffbfff1cf52fa R11: 0000000000000001 R12: ffff8880756740e8 R13: ffff888072ea7000 R14: ffff88814330ecc0 R15: ffff888029a59240 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1018b072b3 CR3: 000000000c571000 CR4: 0000000000350ef0 Call Trace: udf_put_super+0x1bb/0x230 fs/udf/super.c:2326 generic_shutdown_super+0x158/0x480 fs/super.c:500 kill_block_super+0xa1/0x100 fs/super.c:1407 deactivate_locked_super+0x98/0x160 fs/super.c:331 deactivate_super+0xb1/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1177 task_work_run+0x16f/0x270 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xaa3/0x29b0 kernel/exit.c:874 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f92290ca989 Code: Unable to access opcode bytes at 0x7f92290ca95f. RSP: 002b:00007ffe13443208 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f922916a450 RCX: 00007f92290ca989 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffb8 R09: 00007ffe134432f0 R10: 00007ffe134432f0 R11: 0000000000000246 R12: 00007f922916a450 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 Modules linked in: CR2: ffffed1018b072b3 ---[ end trace 0000000000000000 ]--- RIP: 0010:udf_close_lvid.isra.0+0x104/0x550 fs/udf/super.c:2039 Code: c2 cc 9d fe 4c 8d b5 c0 00 00 00 31 f6 4c 89 f7 e8 41 e0 2c 07 48 8d 7b 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 88 03 00 00 RSP: 0018:ffffc90003a5fc30 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff8880c5839580 RCX: 0000000000000000 RDX: 1ffff11018b072b3 RSI: 0000000000000002 RDI: ffff8880c5839598 RBP: ffff88814330ec00 R08: 0000000000000000 R09: ffffffff8e7a97d7 R10: fffffbfff1cf52fa R11: 0000000000000001 R12: ffff8880756740e8 R13: ffff888072ea7000 R14: ffff88814330ecc0 R15: ffff888029a59240 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1018b072b3 CR3: 000000000c571000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 4c 8d b5 c0 00 00 00 lea 0xc0(%rbp),%r14 7: 31 f6 xor %esi,%esi 9: 4c 89 f7 mov %r14,%rdi c: e8 41 e0 2c 07 callq 0x72ce052 11: 48 8d 7b 18 lea 0x18(%rbx),%rdi 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx * 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2a: 48 89 fa mov %rdi,%rdx 2d: 83 e2 07 and $0x7,%edx 30: 38 d0 cmp %dl,%al 32: 7f 08 jg 0x3c 34: 84 c0 test %al,%al 36: 0f 85 88 03 00 00 jne 0x3c4