BUG: unable to handle page fault for address: fffff5200474c200
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffed067 P4D 23ffed067 PUD 1ae4a067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12208 Comm: syz.3.1773 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:276 [inline]
RIP: 0010:sys_imageblit+0x201a/0x25d0 drivers/video/fbdev/core/sysimgblt.c:323
Code: b0 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 b7 00 00 00 45 8b 36 48 8b 44 24 18 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 d1 00 00 00 48 8b 44 24 20 46 89 34 a8 44
RSP: 0000:ffffc90003467180 EFLAGS: 00010a06
RAX: 1ffff9200474c200 RBX: ffff8880223a0000 RCX: dffffc0000000000
RDX: ffffc9000cdf2000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90003467300 R08: ffff88802d965a00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000008
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000007
FS:  00007fd70a2436c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff5200474c200 CR3: 0000000057f2b000 CR4: 00000000003526e0
Call Trace:
 <TASK>
 drm_fbdev_generic_defio_imageblit+0x2c/0x110 drivers/gpu/drm/drm_fbdev_generic.c:37
 ccw_putcs_aligned drivers/video/fbdev/core/fbcon_ccw.c:125 [inline]
 ccw_putcs+0xf2a/0x11e0 drivers/video/fbdev/core/fbcon_ccw.c:175
 fbcon_putcs+0x35c/0x520 drivers/video/fbdev/core/fbcon.c:1301
 do_update_region+0x4e9/0x640 drivers/tty/vt/vt.c:623
 redraw_screen+0xa30/0x1000 drivers/tty/vt/vt.c:983
 vc_do_resize+0x1256/0x17f0 drivers/tty/vt/vt.c:1293
 fbcon_do_set_font+0xb5c/0x1ae0 drivers/video/fbdev/core/fbcon.c:2440
 con_font_set drivers/tty/vt/vt.c:4632 [inline]
 con_font_op+0xc3c/0xf60 drivers/tty/vt/vt.c:4679
 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:476 [inline]
 vt_ioctl+0x1a21/0x1f20 drivers/tty/vt/vt_ioctl.c:754
 tty_ioctl+0x91e/0xdc0 drivers/tty/tty_io.c:2796
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd70939fb19
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:00007fd70a243028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd709625fa0 RCX: 00007fd70939fb19
RDX: 0000200000000400 RSI: 0000000000004b72 RDI: 0000000000000003
RBP: 00007fd709437b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd709626038 R14: 00007fd709625fa0 R15: 00007ffda76e1728
 </TASK>
Modules linked in:
CR2: fffff5200474c200
---[ end trace 0000000000000000 ]---
RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:276 [inline]
RIP: 0010:sys_imageblit+0x201a/0x25d0 drivers/video/fbdev/core/sysimgblt.c:323
Code: b0 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 b7 00 00 00 45 8b 36 48 8b 44 24 18 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 d1 00 00 00 48 8b 44 24 20 46 89 34 a8 44
RSP: 0000:ffffc90003467180 EFLAGS: 00010a06
RAX: 1ffff9200474c200 RBX: ffff8880223a0000 RCX: dffffc0000000000
RDX: ffffc9000cdf2000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90003467300 R08: ffff88802d965a00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000008
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000007
FS:  00007fd70a2436c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff5200474c200 CR3: 0000000057f2b000 CR4: 00000000003526e0
----------------
Code disassembly (best guess):
   0:	b0 4c                	mov    $0x4c,%al
   2:	89 f0                	mov    %esi,%eax
   4:	48 c1 e8 03          	shr    $0x3,%rax
   8:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
   f:	fc ff df
  12:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax
  16:	84 c0                	test   %al,%al
  18:	0f 85 b7 00 00 00    	jne    0xd5
  1e:	45 8b 36             	mov    (%r14),%r14d
  21:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 d1 00 00 00    	jne    0x107
  36:	48 8b 44 24 20       	mov    0x20(%rsp),%rax
  3b:	46 89 34 a8          	mov    %r14d,(%rax,%r13,4)
  3f:	44                   	rex.R