BUG: unable to handle page fault for address: fffff520008da208
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffed067 P4D 23ffed067 PUD 10db6067 PMD 1af36067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3586 Comm: syz-executor500 Not tainted 5.18.0-rc4-syzkaller-00064-g8f4dd16603ce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline]
RIP: 0010:sys_imageblit+0x148f/0x2240 drivers/video/fbdev/core/sysimgblt.c:323
Code: ea 03 42 0f b6 0c 3a 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 a1 09 00 00 8b 8c 84 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffffc900032ff2a8 EFLAGS: 00010212
RAX: 1ffff920008da208 RBX: ffffc900046d1040 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff84342bd7 RDI: ffffc900032ff380
RBP: ffff88801b6187e0 R08: 0000000000000007 R09: ffffffff84342a13
R10: ffffffff84342bb3 R11: 0000000000000001 R12: 0000000000000001
R13: 00000000000003f0 R14: ffffc900032ff380 R15: dffffc0000000000
FS:  000055555714d300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff520008da208 CR3: 000000001cf7e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 drm_fb_helper_sys_imageblit drivers/gpu/drm/drm_fb_helper.c:826 [inline]
 drm_fbdev_fb_imageblit+0x15c/0x350 drivers/gpu/drm/drm_fb_helper.c:2327
 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:139 [inline]
 bit_putcs+0x6e1/0xd20 drivers/video/fbdev/core/bitblit.c:188
 fbcon_putcs+0x353/0x440 drivers/video/fbdev/core/fbcon.c:1296
 do_update_region+0x399/0x630 drivers/tty/vt/vt.c:676
 invert_screen+0x1d4/0x600 drivers/tty/vt/vt.c:800
 highlight drivers/tty/vt/selection.c:57 [inline]
 clear_selection drivers/tty/vt/selection.c:84 [inline]
 clear_selection+0x55/0x70 drivers/tty/vt/selection.c:80
 vc_do_resize+0xe61/0x1170 drivers/tty/vt/vt.c:1257
 fbcon_do_set_font+0x47a/0x760 drivers/video/fbdev/core/fbcon.c:2442
 fbcon_set_font+0x816/0xa00 drivers/video/fbdev/core/fbcon.c:2528
 con_font_set drivers/tty/vt/vt.c:4666 [inline]
 con_font_op+0x73a/0xc90 drivers/tty/vt/vt.c:4710
 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline]
 vt_ioctl+0x1efa/0x2b20 drivers/tty/vt/vt_ioctl.c:752
 tty_ioctl+0xbbd/0x15e0 drivers/tty/tty_io.c:2778
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f811fa1d349
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc50d82298 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f811fa1d349
RDX: 0000000020000000 RSI: 0000000000004b72 RDI: 0000000000000004
RBP: 00007f811f9e11d0 R08: 000000000000000d R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f811f9e1260
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
CR2: fffff520008da208
---[ end trace 0000000000000000 ]---
RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline]
RIP: 0010:sys_imageblit+0x148f/0x2240 drivers/video/fbdev/core/sysimgblt.c:323
Code: ea 03 42 0f b6 0c 3a 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 a1 09 00 00 8b 8c 84 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffffc900032ff2a8 EFLAGS: 00010212
RAX: 1ffff920008da208 RBX: ffffc900046d1040 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff84342bd7 RDI: ffffc900032ff380
RBP: ffff88801b6187e0 R08: 0000000000000007 R09: ffffffff84342a13
R10: ffffffff84342bb3 R11: 0000000000000001 R12: 0000000000000001
R13: 00000000000003f0 R14: ffffc900032ff380 R15: dffffc0000000000
FS:  000055555714d300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff520008da208 CR3: 000000001cf7e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	03 42 0f             	add    0xf(%rdx),%eax
   3:	b6 0c                	mov    $0xc,%dh
   5:	3a 48 89             	cmp    -0x77(%rax),%cl
   8:	fa                   	cli
   9:	83 e2 07             	and    $0x7,%edx
   c:	83 c2 03             	add    $0x3,%edx
   f:	38 ca                	cmp    %cl,%dl
  11:	7c 08                	jl     0x1b
  13:	84 c9                	test   %cl,%cl
  15:	0f 85 a1 09 00 00    	jne    0x9bc
  1b:	8b 8c 84 d8 00 00 00 	mov    0xd8(%rsp,%rax,4),%ecx
  22:	48 89 d8             	mov    %rbx,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 0f b6 14 38       	movzbl (%rax,%r15,1),%edx <-- trapping instruction
  2e:	48 89 d8             	mov    %rbx,%rax
  31:	83 e0 07             	and    $0x7,%eax
  34:	83 c0 03             	add    $0x3,%eax
  37:	38 d0                	cmp    %dl,%al
  39:	7c 08                	jl     0x43
  3b:	84 d2                	test   %dl,%dl
  3d:	0f                   	.byte 0xf
  3e:	85                   	.byte 0x85