BUG: unable to handle page fault for address: ffff88800410f008 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD e201067 P4D e201067 PUD e202067 PMD 80000000040001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1933 Comm: syz-executor.2 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline] RIP: 0010:cfb_imageblit+0x612/0x1010 drivers/video/fbdev/core/cfbimgblt.c:300 Code: b6 34 31 48 89 c1 83 e1 07 83 c1 03 40 38 f1 7c 09 40 84 f6 0f 85 a9 08 00 00 8b 4c 24 40 4d 8d 6f 04 23 08 8b 44 24 0c 31 c8 <41> 89 07 31 ff 44 89 e6 e8 c1 3b 8a fd 45 85 e4 75 0f e8 57 3f 8a RSP: 0018:ffffc900076875f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888218988df0 RCX: 0000000000000000 RDX: 0000000000040000 RSI: 0000000000000000 RDI: ffffffff88de0f00 RBP: 0000000000000002 R08: ffff888218988dff R09: ffff8880a63064df R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 R13: ffff88800410f00c R14: dffffc0000000000 R15: ffff88800410f008 FS: 00007f3e65a7b700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88800410f008 CR3: 000000002e25c000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1207 [inline] vga16fb_imageblit+0x693/0x2210 drivers/video/fbdev/vga16fb.c:1260 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0xcfe/0x1720 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1348 hide_cursor+0x85/0x280 drivers/tty/vt/vt.c:906 redraw_screen+0x5ed/0x790 drivers/tty/vt/vt.c:1011 vc_do_resize+0xed8/0x1150 drivers/tty/vt/vt.c:1326 fbcon_modechanged+0x393/0x6d0 drivers/video/fbdev/core/fbcon.c:2703 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:2759 do_fb_ioctl+0x62e/0x690 drivers/video/fbdev/core/fbmem.c:1106 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1181 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45de29 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3e65a7ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000000e280 RCX: 000000000045de29 RDX: 0000000020000400 RSI: 0000000000004601 RDI: 0000000000000003 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 000000000169fb7f R14: 00007f3e65a7b9c0 R15: 000000000118bf2c Modules linked in: CR2: ffff88800410f008 ---[ end trace b9685d0f1c7f23f5 ]--- RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline] RIP: 0010:cfb_imageblit+0x612/0x1010 drivers/video/fbdev/core/cfbimgblt.c:300 Code: b6 34 31 48 89 c1 83 e1 07 83 c1 03 40 38 f1 7c 09 40 84 f6 0f 85 a9 08 00 00 8b 4c 24 40 4d 8d 6f 04 23 08 8b 44 24 0c 31 c8 <41> 89 07 31 ff 44 89 e6 e8 c1 3b 8a fd 45 85 e4 75 0f e8 57 3f 8a RSP: 0018:ffffc900076875f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888218988df0 RCX: 0000000000000000 RDX: 0000000000040000 RSI: 0000000000000000 RDI: ffffffff88de0f00 RBP: 0000000000000002 R08: ffff888218988dff R09: ffff8880a63064df R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 R13: ffff88800410f00c R14: dffffc0000000000 R15: ffff88800410f008 FS: 00007f3e65a7b700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88800410f008 CR3: 000000002e25c000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400