BUG: unable to handle page fault for address: ffffffffffffffea
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD c091067 P4D c091067 PUD c093067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 9123 Comm: syz.9.1005 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:dvb_device_open+0xe7/0x360 drivers/media/dvb-core/dvbdev.c:113
Code: 4c 89 e7 e8 5b 89 45 fb 4d 8b 2c 24 4d 85 ed 0f 84 08 01 00 00 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 39 89 45 fb <49> 8b 7d 00 e8 90 6a f5 fa 84 c0 0f 84 e9 00 00 00 80 7c 1d 00 00
RSP: 0018:ffffc90002faf7f0 EFLAGS: 00010246
RAX: 1ffffffffffffffd RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: 1ffff110052a5883 R08: ffffffff8cfc0c2f R09: 1ffffffff19f8185
R10: dffffc0000000000 R11: fffffbfff19f8186 R12: ffff88802952c418
R13: ffffffffffffffea R14: ffff888029d9b2e8 R15: ffff88802952c400
FS:  00007fb0085176c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffea CR3: 0000000075f3d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x7f7/0xf90 fs/open.c:826
 do_open fs/namei.c:3616 [inline]
 path_openat+0x2718/0x2fb0 fs/namei.c:3750
 do_filp_open+0x1df/0x400 fs/namei.c:3777
 do_sys_openat2+0x14b/0x500 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb00a27e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fb008516b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb0085176c0 RCX: 00007fb00a27e68e
RDX: 0000000000040002 RSI: 00007fb008516c00 RDI: ffffffffffffff9c
RBP: 00007fb008516c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007fb00a537038 R14: 00007fb00a536fa0 R15: 00007ffe3c1ccbc8
 </TASK>
Modules linked in:
CR2: ffffffffffffffea
---[ end trace 599f5c7bf043d3d3 ]---
RIP: 0010:dvb_device_open+0xe7/0x360 drivers/media/dvb-core/dvbdev.c:113
Code: 4c 89 e7 e8 5b 89 45 fb 4d 8b 2c 24 4d 85 ed 0f 84 08 01 00 00 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 39 89 45 fb <49> 8b 7d 00 e8 90 6a f5 fa 84 c0 0f 84 e9 00 00 00 80 7c 1d 00 00
RSP: 0018:ffffc90002faf7f0 EFLAGS: 00010246
RAX: 1ffffffffffffffd RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: 1ffff110052a5883 R08: ffffffff8cfc0c2f R09: 1ffffffff19f8185
R10: dffffc0000000000 R11: fffffbfff19f8186 R12: ffff88802952c418
R13: ffffffffffffffea R14: ffff888029d9b2e8 R15: ffff88802952c400
FS:  00007fb0085176c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffea CR3: 0000000075f3d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 89 e7             	mov    %r12,%rdi
   3:	e8 5b 89 45 fb       	call   0xfb458963
   8:	4d 8b 2c 24          	mov    (%r12),%r13
   c:	4d 85 ed             	test   %r13,%r13
   f:	0f 84 08 01 00 00    	je     0x11d
  15:	4c 89 e8             	mov    %r13,%rax
  18:	48 c1 e8 03          	shr    $0x3,%rax
  1c:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  20:	74 08                	je     0x2a
  22:	4c 89 ef             	mov    %r13,%rdi
  25:	e8 39 89 45 fb       	call   0xfb458963
* 2a:	49 8b 7d 00          	mov    0x0(%r13),%rdi <-- trapping instruction
  2e:	e8 90 6a f5 fa       	call   0xfaf56ac3
  33:	84 c0                	test   %al,%al
  35:	0f 84 e9 00 00 00    	je     0x124
  3b:	80 7c 1d 00 00       	cmpb   $0x0,0x0(%rbp,%rbx,1)