BUG: unable to handle page fault for address: ffff8880010002a0 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD c801067 P4D c801067 PUD c802067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13334 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+0xe5f/0x11e0 drivers/video/fbdev/core/cfbimgblt.c:300 Code: d3 f8 23 44 24 30 48 8b 4c 24 48 4c 8d 3c 81 4c 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 54 41 8b 07 23 44 24 18 33 44 24 10 <41> 89 45 00 31 ff 89 ee e8 a4 d2 81 fd 85 ed b8 08 00 00 00 0f 44 RSP: 0018:ffffc90002147628 EFLAGS: 00010202 RAX: 0000000000000707 RBX: ffff8882186c8d36 RCX: ffffffff88be05c0 RDX: ffffc90001c71000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000004 R08: ffffffff83f32f5c R09: ffffffff83f3235c R10: 0000000000000002 R11: ffff88806d4b2240 R12: 0000000000000001 R13: ffff8880010002a0 R14: dffffc0000000000 R15: ffffffff88be05f0 FS: 00007f6ca317f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880010002a0 CR3: 000000006579d000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bit_putcs+0x17ac/0x1bf0 drivers/video/fbdev/core/bitblit.c:105 fbcon_putcs+0x790/0xaf0 drivers/video/fbdev/core/fbcon.c:1308 con_flush drivers/tty/vt/vt.c:2575 [inline] vc_con_write_normal drivers/tty/vt/vt.c:2803 [inline] do_con_write+0x115b/0xd580 drivers/tty/vt/vt.c:2910 con_write+0x20/0x40 drivers/tty/vt/vt.c:3250 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0xcbf/0x1170 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:962 [inline] tty_write+0x593/0x940 drivers/tty/tty_io.c:1046 vfs_write+0x2d3/0xd10 fs/read_write.c:584 ksys_write+0x11b/0x220 fs/read_write.c:639 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45de59 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:00007f6ca317ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000003a600 RCX: 000000000045de59 RDX: 0000000000001006 RSI: 00000000200002c0 RDI: 0000000000000006 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc512131af R14: 00007f6ca317f9c0 R15: 000000000118bf2c Modules linked in: CR2: ffff8880010002a0 ---[ end trace de82d451c6fe6c95 ]--- 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+0xe5f/0x11e0 drivers/video/fbdev/core/cfbimgblt.c:300 Code: d3 f8 23 44 24 30 48 8b 4c 24 48 4c 8d 3c 81 4c 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 54 41 8b 07 23 44 24 18 33 44 24 10 <41> 89 45 00 31 ff 89 ee e8 a4 d2 81 fd 85 ed b8 08 00 00 00 0f 44 RSP: 0018:ffffc90002147628 EFLAGS: 00010202 RAX: 0000000000000707 RBX: ffff8882186c8d36 RCX: ffffffff88be05c0 RDX: ffffc90001c71000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000004 R08: ffffffff83f32f5c R09: ffffffff83f3235c R10: 0000000000000002 R11: ffff88806d4b2240 R12: 0000000000000001 R13: ffff8880010002a0 R14: dffffc0000000000 R15: ffffffff88be05f0 FS: 00007f6ca317f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880010002a0 CR3: 000000006579d000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400