BUG: unable to handle page fault for address: ffffed101878680d #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffef067 P4D 23ffef067 PUD 13fff6067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3497 Comm: syz-executor335 Not tainted 5.15.113-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:udf_close_lvid+0x148/0x9a0 fs/udf/super.c:2076 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 24 ca 49 07 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 3d 05 00 00 4c 89 7c 24 18 4c 89 74 24 RSP: 0018:ffffc90002e8fc60 EFLAGS: 00010a02 RAX: 1ffff1101878680d RBX: ffff88807722f000 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8880c3c34068 RBP: ffffc90002e8fd48 R08: dffffc0000000000 R09: fffff520005d1f49 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880c3c34050 R13: dffffc0000000000 R14: 1ffff920005d1f98 R15: ffff88807cbe9000 FS: 00005555570ce300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101878680d CR3: 0000000074769000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_put_super+0xc9/0x160 fs/udf/super.c:2363 generic_shutdown_super+0x136/0x2c0 fs/super.c:475 kill_block_super+0x7a/0xe0 fs/super.c:1405 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f5071767007 Code: 08 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe19be6f18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5071767007 RDX: 00007ffe19be6fd9 RSI: 000000000000000a RDI: 00007ffe19be6fd0 RBP: 00007ffe19be6fd0 R08: 00000000ffffffff R09: 00007ffe19be6db0 R10: 00005555570cf66b R11: 0000000000000206 R12: 00007ffe19be8040 R13: 00005555570cf5f0 R14: 00007ffe19be6f40 R15: 0000000000000001 Modules linked in: CR2: ffffed101878680d ---[ end trace cb99b1538429f444 ]--- RIP: 0010:udf_close_lvid+0x148/0x9a0 fs/udf/super.c:2076 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 24 ca 49 07 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 3d 05 00 00 4c 89 7c 24 18 4c 89 74 24 RSP: 0018:ffffc90002e8fc60 EFLAGS: 00010a02 RAX: 1ffff1101878680d RBX: ffff88807722f000 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8880c3c34068 RBP: ffffc90002e8fd48 R08: dffffc0000000000 R09: fffff520005d1f49 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880c3c34050 R13: dffffc0000000000 R14: 1ffff920005d1f98 R15: ffff88807cbe9000 FS: 00005555570ce300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101878680d CR3: 0000000074769000 CR4: 00000000003506e0 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 24 ca 49 07 callq 0x749ca41 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 3d 05 00 00 jne 0x573 36: 4c 89 7c 24 18 mov %r15,0x18(%rsp) 3b: 4c rex.WR 3c: 89 .byte 0x89 3d: 74 24 je 0x63