BUG: unable to handle kernel paging request at ffff8880ffffe570 PGD ba01067 P4D ba01067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 24086 Comm: syz-executor.0 Not tainted 4.19.91-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline] RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1168 [inline] RIP: 0010:vga16fb_imageblit+0xa52/0x2200 drivers/video/fbdev/vga16fb.c:1260 Code: df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 46 e2 1a fe 41 8b 45 14 48 8b 4d c8 <88> 01 0f ae e8 8a 01 b8 05 00 00 00 ba ce 03 00 00 ee 48 c7 c2 50 RSP: 0018:ffff888080907318 EFLAGS: 00010246 RAX: 0000000000000008 RBX: 0000000000000003 RCX: ffff8880ffffe570 RDX: 0000000000000000 RSI: ffffffff8387f516 RDI: ffff8880809074d4 RBP: ffff8880809073b0 R08: ffff88808238c300 R09: 0000000000000000 R10: ffffed101497506d R11: 0000000000000006 R12: ffff8880809074c4 R13: ffff8880809074c0 R14: ffff888219784140 R15: 0000000000000001 FS: 00007f85bc1e6700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880ffffe570 CR3: 0000000046ba7000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:139 [inline] bit_putcs+0x9a3/0xf10 drivers/video/fbdev/core/bitblit.c:188 fbcon_putcs+0x42b/0x4f0 drivers/video/fbdev/core/fbcon.c:1320 fbcon_redraw_move.isra.0+0x258/0x2a0 drivers/video/fbdev/core/fbcon.c:1700 ypan_down_redraw drivers/video/fbdev/core/fbcon.c:1565 [inline] fbcon_scroll+0x3133/0x3780 drivers/video/fbdev/core/fbcon.c:2015 con_scroll+0x5b4/0x6b0 drivers/tty/vt/vt.c:631 ri drivers/tty/vt/vt.c:1469 [inline] do_con_trol+0x37a3/0x6070 drivers/tty/vt/vt.c:2169 do_con_write.part.0+0xfd5/0x1eb0 drivers/tty/vt/vt.c:2773 do_con_write drivers/tty/vt/vt.c:2541 [inline] con_write+0x46/0xd0 drivers/tty/vt/vt.c:3110 process_output_block drivers/tty/n_tty.c:593 [inline] n_tty_write+0x3f9/0x1140 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x458/0x7a0 drivers/tty/tty_io.c:1044 __vfs_write+0x114/0x810 fs/read_write.c:485 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0x14f/0x2d0 fs/read_write.c:599 __do_sys_write fs/read_write.c:611 [inline] __se_sys_write fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:608 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f85bc1e5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a919 RDX: 0000000000000448 RSI: 0000000020000880 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f85bc1e66d4 R13: 00000000004cbd7a R14: 00000000004e5b48 R15: 00000000ffffffff Modules linked in: CR2: ffff8880ffffe570 ---[ end trace ac670baf459407ea ]--- RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline] RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1168 [inline] RIP: 0010:vga16fb_imageblit+0xa52/0x2200 drivers/video/fbdev/vga16fb.c:1260 Code: df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 46 e2 1a fe 41 8b 45 14 48 8b 4d c8 <88> 01 0f ae e8 8a 01 b8 05 00 00 00 ba ce 03 00 00 ee 48 c7 c2 50 RSP: 0018:ffff888080907318 EFLAGS: 00010246 RAX: 0000000000000008 RBX: 0000000000000003 RCX: ffff8880ffffe570 RDX: 0000000000000000 RSI: ffffffff8387f516 RDI: ffff8880809074d4 RBP: ffff8880809073b0 R08: ffff88808238c300 R09: 0000000000000000 R10: ffffed101497506d R11: 0000000000000006 R12: ffff8880809074c4 R13: ffff8880809074c0 R14: ffff888219784140 R15: 0000000000000001 FS: 00007f85bc1e6700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880ffffe570 CR3: 0000000046ba7000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400