Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 10571 Comm: syz.3.1609 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:fb_videomode_to_var+0x2e/0x600
Code: 55 41 57 41 56 41 55 41 54 53 49 89 f6 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 4d d7 ab fc 4d 8d 7e 0c 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c7 02 00 00 41 8b 2f 48 89 d8 48 c1 e8
RSP: 0018:ffffc9000361f828 EFLAGS: 00010203
RAX: 0000000000000001 RBX: ffffc9000361f9c0 RCX: 0000000000080000
RDX: ffffc90023a88000 RSI: 0000000000000553 RDI: 0000000000000554
RBP: ffffc9000361faf0 R08: ffff88810ef49d80 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000002 R12: ffffffff9a5cff70
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000000c
FS:  00007f123f1f56c0(0000) GS:ffff8882a9452000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f123f1f4ff8 CR3: 000000010f446000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 fbcon_resize+0x745/0x1730
 vc_do_resize+0x7bb/0x17e0
 vt_ioctl+0x1d3b/0x20d0
 tty_ioctl+0x920/0xdd0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x170/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f123e39e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f123f1f5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f123e626180 RCX: 00007f123e39e019
RDX: 0000200000000040 RSI: 0000000000005609 RDI: 0000000000000009
RBP: 00007f123e43500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f123e626218 R14: 00007f123e626180 R15: 00007ffde14acdd8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:fb_videomode_to_var+0x2e/0x600
Code: 55 41 57 41 56 41 55 41 54 53 49 89 f6 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 4d d7 ab fc 4d 8d 7e 0c 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c7 02 00 00 41 8b 2f 48 89 d8 48 c1 e8
RSP: 0018:ffffc9000361f828 EFLAGS: 00010203
RAX: 0000000000000001 RBX: ffffc9000361f9c0 RCX: 0000000000080000
RDX: ffffc90023a88000 RSI: 0000000000000553 RDI: 0000000000000554
RBP: ffffc9000361faf0 R08: ffff88810ef49d80 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000002 R12: ffffffff9a5cff70
R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000000000c
FS:  00007f123f1f56c0(0000) GS:ffff8882a9452000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f123f1f4ff8 CR3: 000000010f446000 CR4: 00000000000006f0
