Oops: general protection fault, probably for non-canonical address 0xdffffc000000003f: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000001f8-0x00000000000001ff]
CPU: 0 UID: 0 PID: 14131 Comm: syz.8.1844 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:module_is_live include/linux/module.h:612 [inline]
RIP: 0010:try_module_get+0x24/0xc0 kernel/module/main.c:913
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 b0 01 48 85 ff 74 72 48 89 fb 49 bf 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 64 83 3b 02 74 5b 4c 8d b3 f8 04 00 00 4c
RSP: 0018:ffffc90004ddf6f0 EFLAGS: 00010207
RAX: 000000000000003f RBX: 00000000000001ff RCX: ffffffff8b23b696
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 00000000000001ff
RBP: ffff888037f1ee00 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520009bbed0 R12: ffff88802c65a018
R13: ffff88802520f800 R14: ffff88802bf7e420 R15: dffffc0000000000
FS:  00007f3b217346c0(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b23505900 CR3: 0000000027646000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dvb_device_open+0xef/0x360 drivers/media/dvb-core/dvbdev.c:103
 chrdev_open+0x4d0/0x5f0 fs/char_dev.c:411
 do_dentry_open+0x83d/0x13e0 fs/open.c:949
 vfs_open+0x3b/0x350 fs/open.c:1081
 do_open fs/namei.c:4671 [inline]
 path_openat+0x2e43/0x38a0 fs/namei.c:4830
 do_file_open+0x23e/0x4a0 fs/namei.c:4859
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b234dcfce
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:00007f3b21733b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3b217346c0 RCX: 00007f3b234dcfce
RDX: 0000000000000002 RSI: 00007f3b21733c00 RDI: ffffffffffffff9c
RBP: 00007f3b21733c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f3b23796218 R14: 00007f3b23796180 R15: 00007fff016d14d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:module_is_live include/linux/module.h:612 [inline]
RIP: 0010:try_module_get+0x24/0xc0 kernel/module/main.c:913
Code: 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 b0 01 48 85 ff 74 72 48 89 fb 49 bf 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 64 83 3b 02 74 5b 4c 8d b3 f8 04 00 00 4c
RSP: 0018:ffffc90004ddf6f0 EFLAGS: 00010207
RAX: 000000000000003f RBX: 00000000000001ff RCX: ffffffff8b23b696
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 00000000000001ff
RBP: ffff888037f1ee00 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520009bbed0 R12: ffff88802c65a018
R13: ffff88802520f800 R14: ffff88802bf7e420 R15: dffffc0000000000
FS:  00007f3b217346c0(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b23505900 CR3: 0000000027646000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	f3 0f 1e fa          	endbr64
   a:	41 57                	push   %r15
   c:	41 56                	push   %r14
   e:	53                   	push   %rbx
   f:	b0 01                	mov    $0x1,%al
  11:	48 85 ff             	test   %rdi,%rdi
  14:	74 72                	je     0x88
  16:	48 89 fb             	mov    %rdi,%rbx
  19:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  20:	fc ff df
  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:	75 64                	jne    0x97
  33:	83 3b 02             	cmpl   $0x2,(%rbx)
  36:	74 5b                	je     0x93
  38:	4c 8d b3 f8 04 00 00 	lea    0x4f8(%rbx),%r14
  3f:	4c                   	rex.WR