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: 27981 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__writeq arch/x86/include/asm/io.h:100 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:69 [inline] RIP: 0010:bitfill_aligned+0x115/0x200 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 41 89 c7 e8 fd c5 c7 fd 41 83 fc 07 76 5f 4c 89 ed e8 7f c4 c7 fd 48 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 48 89 5d 20 <48> 89 5d 28 48 8d 45 38 48 89 5d 30 48 83 c5 40 48 89 18 41 83 ef RSP: 0018:ffff88808d1f74b8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90008651000 RDX: 0000000000040000 RSI: ffffffff839ac0f1 RDI: 0000000000000005 RBP: ffff888000ffffd8 R08: 00000000000005c0 R09: 0000000000000007 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000017 R13: ffff888000ffffd8 R14: 0000000000000000 R15: 0000000000000017 FS: 00007f34e8d87700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000000 CR3: 0000000096ac3000 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+0x3f6/0x4b0 drivers/video/fbdev/core/bitblit.c:224 fbcon_clear_margins+0x1e2/0x350 drivers/video/fbdev/core/fbcon.c:1288 fbcon_switch+0xf0d/0x1ba0 drivers/video/fbdev/core/fbcon.c:2155 redraw_screen+0x37d/0x870 drivers/tty/vt/vt.c:1015 vc_do_resize+0x1145/0x1440 drivers/tty/vt/vt.c:1341 vt_ioctl+0xb24/0x2380 drivers/tty/vt/vt_ioctl.c:853 tty_ioctl+0x5b0/0x1630 drivers/tty/tty_io.c:2669 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f34ea412279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f34e8d87168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f34ea524f80 RCX: 00007f34ea412279 RDX: 0000000020000380 RSI: 0000000000005609 RDI: 0000000000000006 RBP: 00007f34ea46c189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd91e4665f R14: 00007f34e8d87300 R15: 0000000000022000 Modules linked in: CR2: ffff888001000000 ---[ end trace 2cdb1ef93e48bdf0 ]--- RIP: 0010:__writeq arch/x86/include/asm/io.h:100 [inline] RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:69 [inline] RIP: 0010:bitfill_aligned+0x115/0x200 drivers/video/fbdev/core/cfbfillrect.c:35 Code: 41 89 c7 e8 fd c5 c7 fd 41 83 fc 07 76 5f 4c 89 ed e8 7f c4 c7 fd 48 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 48 89 5d 20 <48> 89 5d 28 48 8d 45 38 48 89 5d 30 48 83 c5 40 48 89 18 41 83 ef RSP: 0018:ffff88808d1f74b8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90008651000 RDX: 0000000000040000 RSI: ffffffff839ac0f1 RDI: 0000000000000005 RBP: ffff888000ffffd8 R08: 00000000000005c0 R09: 0000000000000007 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000017 R13: ffff888000ffffd8 R14: 0000000000000000 R15: 0000000000000017 FS: 00007f34e8d87700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000000 CR3: 0000000096ac3000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 41 89 c7 mov %eax,%r15d 3: e8 fd c5 c7 fd callq 0xfdc7c605 8: 41 83 fc 07 cmp $0x7,%r12d c: 76 5f jbe 0x6d e: 4c 89 ed mov %r13,%rbp 11: e8 7f c4 c7 fd callq 0xfdc7c495 16: 48 89 5d 00 mov %rbx,0x0(%rbp) 1a: 48 89 5d 08 mov %rbx,0x8(%rbp) 1e: 48 89 5d 10 mov %rbx,0x10(%rbp) 22: 48 89 5d 18 mov %rbx,0x18(%rbp) 26: 48 89 5d 20 mov %rbx,0x20(%rbp) * 2a: 48 89 5d 28 mov %rbx,0x28(%rbp) <-- trapping instruction 2e: 48 8d 45 38 lea 0x38(%rbp),%rax 32: 48 89 5d 30 mov %rbx,0x30(%rbp) 36: 48 83 c5 40 add $0x40,%rbp 3a: 48 89 18 mov %rbx,(%rax) 3d: 41 rex.B 3e: 83 .byte 0x83 3f: ef out %eax,(%dx)