BUG: unable to handle page fault for address: ffffed101dc8779b #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: 5028 Comm: syz-executor227 Not tainted 6.6.0-rc2-syzkaller-00048-g42dc814987c1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:udf_close_lvid+0x14c/0x9a0 fs/udf/super.c:2035 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 d0 92 cd 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:ffffc90003c8fbc0 EFLAGS: 00010a02 RAX: 1ffff1101dc8779b RBX: ffff8880278e2000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8b5998c0 RDI: ffff8880ee43bcd8 RBP: ffffc90003c8fcb8 R08: ffffffff8e9a67ef R09: 1ffffffff1d34cfd R10: dffffc0000000000 R11: fffffbfff1d34cfe R12: ffff8880ee43bcc0 R13: dffffc0000000000 R14: 1ffff92000791f84 R15: ffff88802663fc00 FS: 0000555556aa6380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101dc8779b CR3: 000000001c224000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_put_super+0xcd/0x160 fs/udf/super.c:2322 generic_shutdown_super+0x13a/0x2c0 fs/super.c:693 kill_block_super+0x41/0x70 fs/super.c:1646 deactivate_locked_super+0xa4/0x110 fs/super.c:481 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc64ab7a8c7 Code: 07 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 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffef9bbfe38 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc64ab7a8c7 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffef9bbfef0 RBP: 00007ffef9bbfef0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffef9bc0f60 R13: 0000555556aa76c0 R14: 431bde82d7b634db R15: 00007ffef9bc0f80 Modules linked in: CR2: ffffed101dc8779b ---[ end trace 0000000000000000 ]--- RIP: 0010:udf_close_lvid+0x14c/0x9a0 fs/udf/super.c:2035 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 d0 92 cd 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:ffffc90003c8fbc0 EFLAGS: 00010a02 RAX: 1ffff1101dc8779b RBX: ffff8880278e2000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8b5998c0 RDI: ffff8880ee43bcd8 RBP: ffffc90003c8fcb8 R08: ffffffff8e9a67ef R09: 1ffffffff1d34cfd R10: dffffc0000000000 R11: fffffbfff1d34cfe R12: ffff8880ee43bcc0 R13: dffffc0000000000 R14: 1ffff92000791f84 R15: ffff88802663fc00 FS: 0000555556aa6380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed101dc8779b CR3: 000000001c224000 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 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 d0 92 cd 07 call 0x7cd92ed 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