syz_tun: tun_net_xmit 42
syz_tun: tun_net_xmit 42
syz_tun: tun_net_xmit 42
syz_tun: tun_net_xmit 42
BUG: unable to handle page fault for address: ffffed101f730281
#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: 5787 Comm: syz.4.340 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:udf_close_lvid+0x14e/0x990 fs/udf/super.c:2108
Code: 0f 84 f7 00 00 00 4c 89 6c 24 20 49 8d bd c0 00 00 00 48 89 7c 24 38 31 f6 e8 9e 5d ed 06 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 07 05 00 00 4c 89 74 24 40 41 c6 44 24
RSP: 0018:ffffc9000342f800 EFLAGS: 00010a06
RAX: 1ffff1101f730281 RBX: ffff888057f4704b RCX: 1ffff92000685ee0
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8880fb981408
RBP: ffffc9000342f8e8 R08: dffffc0000000000 R09: fffff52000685eb9
R10: fffff52000685eb9 R11: 1ffff92000685eb8 R12: ffff8880fb9813f0
R13: ffff888060fbb400 R14: 1ffff92000685f0c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed101f730281 CR3: 000000004b687000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_put_super+0xc8/0x160 fs/udf/super.c:2395
 generic_shutdown_super+0x130/0x300 fs/super.c:475
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1139
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x61e/0x20a0 kernel/exit.c:883
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3d087ddba9
Code: Unable to access opcode bytes at RIP 0x7f3d087ddb7f.
RSP: 002b:00007f3d06a45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000400 RBX: 00007f3d08a24fa0 RCX: 00007f3d087ddba9
RDX: 000000000800001d RSI: 0000200000007fc0 RDI: 0000000000000003
RBP: 00007f3d08860e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3d08a25038 R14: 00007f3d08a24fa0 R15: 00007fff61a329b8
 </TASK>
Modules linked in:
CR2: ffffed101f730281
---[ end trace 2973cc7667d4b929 ]---
RIP: 0010:udf_close_lvid+0x14e/0x990 fs/udf/super.c:2108
Code: 0f 84 f7 00 00 00 4c 89 6c 24 20 49 8d bd c0 00 00 00 48 89 7c 24 38 31 f6 e8 9e 5d ed 06 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 07 05 00 00 4c 89 74 24 40 41 c6 44 24
RSP: 0018:ffffc9000342f800 EFLAGS: 00010a06
RAX: 1ffff1101f730281 RBX: ffff888057f4704b RCX: 1ffff92000685ee0
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8880fb981408
RBP: ffffc9000342f8e8 R08: dffffc0000000000 R09: fffff52000685eb9
R10: fffff52000685eb9 R11: 1ffff92000685eb8 R12: ffff8880fb9813f0
R13: ffff888060fbb400 R14: 1ffff92000685f0c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed101f730281 CR3: 000000004b687000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	0f 84 f7 00 00 00    	je     0xfd
   6:	4c 89 6c 24 20       	mov    %r13,0x20(%rsp)
   b:	49 8d bd c0 00 00 00 	lea    0xc0(%r13),%rdi
  12:	48 89 7c 24 38       	mov    %rdi,0x38(%rsp)
  17:	31 f6                	xor    %esi,%esi
  19:	e8 9e 5d ed 06       	call   0x6ed5dbc
  1e:	49 8d 7c 24 18       	lea    0x18(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 07 05 00 00    	jne    0x53e
  37:	4c 89 74 24 40       	mov    %r14,0x40(%rsp)
  3c:	41                   	rex.B
  3d:	c6                   	.byte 0xc6
  3e:	44                   	rex.R
  3f:	24                   	.byte 0x24