general protection fault, probably for non-canonical address 0xdffffc0000000040: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000200-0x0000000000000207]
CPU: 0 PID: 7999 Comm: syz-executor.2 Not tainted 6.1.74-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__fb_pad_aligned_buffer include/linux/fb.h:655 [inline]
RIP: 0010:bit_putcs_aligned drivers/video/fbdev/core/bitblit.c:96 [inline]
RIP: 0010:bit_putcs+0x123a/0x1da0 drivers/video/fbdev/core/bitblit.c:185
Code: 00 01 00 00 45 31 ed 45 31 f6 48 89 9c 24 98 01 00 00 4c 01 eb 4b 8d 3c 34 48 89 f8 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 1b 02 00 00 47 0f b6 3c 34 48 89 d8 48 c1
RSP: 0018:ffffc9000b4bf220 EFLAGS: 00010202
RAX: 0000000000000040 RBX: ffff88801f488000 RCX: 0000000000000080
RDX: dffffc0000000000 RSI: 000000000000000f RDI: 0000000000000200
RBP: ffffc9000b4bf4c0 R08: ffffffff847adc15 R09: ffffc9000b4bf3e8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000200
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000008
FS:  00007f1af0b7c6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe56157cb38 CR3: 0000000017f55000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fbcon_putcs+0x353/0x530 drivers/video/fbdev/core/fbcon.c:1282
 do_update_region+0x537/0x780 drivers/tty/vt/vt.c:676
 vc_con_write_normal drivers/tty/vt/vt.c:2854 [inline]
 do_con_write+0x164d/0x7260 drivers/tty/vt/vt.c:2955
 con_write+0x20/0x40 drivers/tty/vt/vt.c:3295
 process_output_block drivers/tty/n_tty.c:586 [inline]
 n_tty_write+0xd7f/0x1260 drivers/tty/n_tty.c:2367
 do_tty_write drivers/tty/tty_io.c:1018 [inline]
 file_tty_write+0x504/0x890 drivers/tty/tty_io.c:1089
 call_write_iter include/linux/fs.h:2249 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7ae/0xba0 fs/read_write.c:584
 ksys_write+0x19c/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1aefe7cda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1af0b7c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1aeffabf80 RCX: 00007f1aefe7cda9
RDX: 0000000000001006 RSI: 0000000020001040 RDI: 0000000000000004
RBP: 00007f1aefec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1aeffabf80 R15: 00007ffca788fdf8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__fb_pad_aligned_buffer include/linux/fb.h:655 [inline]
RIP: 0010:bit_putcs_aligned drivers/video/fbdev/core/bitblit.c:96 [inline]
RIP: 0010:bit_putcs+0x123a/0x1da0 drivers/video/fbdev/core/bitblit.c:185
Code: 00 01 00 00 45 31 ed 45 31 f6 48 89 9c 24 98 01 00 00 4c 01 eb 4b 8d 3c 34 48 89 f8 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 1b 02 00 00 47 0f b6 3c 34 48 89 d8 48 c1
RSP: 0018:ffffc9000b4bf220 EFLAGS: 00010202
RAX: 0000000000000040 RBX: ffff88801f488000 RCX: 0000000000000080
RDX: dffffc0000000000 RSI: 000000000000000f RDI: 0000000000000200
RBP: ffffc9000b4bf4c0 R08: ffffffff847adc15 R09: ffffc9000b4bf3e8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000200
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000008
FS:  00007f1af0b7c6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe56157cb38 CR3: 0000000017f55000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 01                	add    %al,(%rcx)
   2:	00 00                	add    %al,(%rax)
   4:	45 31 ed             	xor    %r13d,%r13d
   7:	45 31 f6             	xor    %r14d,%r14d
   a:	48 89 9c 24 98 01 00 	mov    %rbx,0x198(%rsp)
  11:	00
  12:	4c 01 eb             	add    %r13,%rbx
  15:	4b 8d 3c 34          	lea    (%r12,%r14,1),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  27:	fc ff df
* 2a:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 1b 02 00 00    	jne    0x251
  36:	47 0f b6 3c 34       	movzbl (%r12,%r14,1),%r15d
  3b:	48 89 d8             	mov    %rbx,%rax
  3e:	48                   	rex.W
  3f:	c1                   	.byte 0xc1