BUG: unable to handle kernel paging request at ffff888001000000 PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6861 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:__writeq arch/x86/include/asm/io.h:100 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:75 [inline] RIP: 0010:bitfill_aligned+0x17f/0x200 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 49 01 c5 e8 23 c4 c7 fd 41 8d 6f ff 31 ff 44 89 fe e8 85 c5 c7 fd 45 85 ff 74 28 4d 89 ec e8 08 c4 c7 fd 4c 89 e0 49 83 c4 08 <48> 89 18 31 ff 89 ee 83 ed 01 e8 62 c5 c7 fd 83 fd ff 75 e0 4f 8d RSP: 0018:ffff888092c174b8 EFLAGS: 00010282 RAX: ffff888001000000 RBX: 0000000000000000 RCX: ffffc90007b2b000 RDX: 0000000000040000 RSI: ffffffff839ac168 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000180 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff888001000008 R13: ffff888001000000 R14: 0000000000000000 R15: 0000000000000006 FS: 00007feeec5a4700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000000 CR3: 00000000aa52b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cfb_fillrect+0x40b/0x7b0 drivers/video/fbdev/core/cfbfillrect.c:327 vga16fb_fillrect+0x683/0x1940 drivers/video/fbdev/vga16fb.c:951 bit_clear_margins+0x2d5/0x4b0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins+0x1e2/0x350 drivers/video/fbdev/core/fbcon.c:1288 ypan_up_redraw drivers/video/fbdev/core/fbcon.c:1465 [inline] fbcon_scroll+0xbc2/0x3440 drivers/video/fbdev/core/fbcon.c:1723 con_scroll+0x5f8/0x720 drivers/tty/vt/vt.c:637 lf+0x262/0x2b0 drivers/tty/vt/vt.c:1509 do_con_trol+0x1df/0x5970 drivers/tty/vt/vt.c:2177 do_con_write+0xbea/0x1d90 drivers/tty/vt/vt.c:2828 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3163 process_output_block drivers/tty/n_tty.c:593 [inline] n_tty_write+0x3c0/0xff0 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 __vfs_write+0xf7/0x770 fs/read_write.c:485 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7feeee0320f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feeec5a4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007feeee151f80 RCX: 00007feeee0320f9 RDX: 0000000000001006 RSI: 0000000020001040 RDI: 0000000000000004 RBP: 00007feeee08dae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe340b222f R14: 00007feeec5a4300 R15: 0000000000022000 Modules linked in: CR2: ffff888001000000 ---[ end trace 0029ed088426159b ]--- RIP: 0010:__writeq arch/x86/include/asm/io.h:100 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:75 [inline] RIP: 0010:bitfill_aligned+0x17f/0x200 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 49 01 c5 e8 23 c4 c7 fd 41 8d 6f ff 31 ff 44 89 fe e8 85 c5 c7 fd 45 85 ff 74 28 4d 89 ec e8 08 c4 c7 fd 4c 89 e0 49 83 c4 08 <48> 89 18 31 ff 89 ee 83 ed 01 e8 62 c5 c7 fd 83 fd ff 75 e0 4f 8d RSP: 0018:ffff888092c174b8 EFLAGS: 00010282 RAX: ffff888001000000 RBX: 0000000000000000 RCX: ffffc90007b2b000 RDX: 0000000000040000 RSI: ffffffff839ac168 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000180 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff888001000008 R13: ffff888001000000 R14: 0000000000000000 R15: 0000000000000006 FS: 00007feeec5a4700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000000 CR3: 00000000aa52b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 01 c5 add %rax,%r13 3: e8 23 c4 c7 fd callq 0xfdc7c42b 8: 41 8d 6f ff lea -0x1(%r15),%ebp c: 31 ff xor %edi,%edi e: 44 89 fe mov %r15d,%esi 11: e8 85 c5 c7 fd callq 0xfdc7c59b 16: 45 85 ff test %r15d,%r15d 19: 74 28 je 0x43 1b: 4d 89 ec mov %r13,%r12 1e: e8 08 c4 c7 fd callq 0xfdc7c42b 23: 4c 89 e0 mov %r12,%rax 26: 49 83 c4 08 add $0x8,%r12 * 2a: 48 89 18 mov %rbx,(%rax) <-- trapping instruction 2d: 31 ff xor %edi,%edi 2f: 89 ee mov %ebp,%esi 31: 83 ed 01 sub $0x1,%ebp 34: e8 62 c5 c7 fd callq 0xfdc7c59b 39: 83 fd ff cmp $0xffffffff,%ebp 3c: 75 e0 jne 0x1e 3e: 4f rex.WRXB 3f: 8d .byte 0x8d