netlink: 'syz-executor.2': attribute type 6 has an invalid length. bond703: Enslaving bridge1082 as an active interface with an up link netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 'syz-executor.2': attribute type 6 has an invalid length. audit: type=1800 audit(1610470522.230:197): pid=15880 uid=0 auid=0 ses=4 subj==unconfined op=collect_data cause=failed comm="syz-executor.0" name="bus" dev="sda1" ino=16647 res=0 BUG: unable to handle kernel paging request at ffff888001000040 PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1 Comm: systemd Not tainted 4.19.166-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:1176 [inline] RIP: 0010:vga16fb_imageblit+0xc2f/0x2260 drivers/video/fbdev/vga16fb.c:1260 Code: 48 83 c5 01 48 89 f8 48 89 f9 48 83 c3 01 48 c1 e8 03 83 e1 07 42 0f b6 04 38 38 c8 7f 08 84 c0 0f 85 86 0f 00 00 0f b6 45 ff <88> 02 44 89 e6 31 ff 29 de e8 33 8c bc fd 4c 39 eb 75 b8 48 8b 7c RSP: 0018:ffff8880b5a0f448 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888001000041 RCX: 0000000000000000 RDX: ffff888001000040 RSI: ffffffff83a8460f RDI: ffff888238ca0ae8 RBP: ffff888238ca0ae9 R08: 0000000000003133 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000001000042 R13: ffff888001000042 R14: ffff888001000040 R15: dffffc0000000000 FS: 00007f3272d4f500(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000040 CR3: 00000000a3902000 CR4: 00000000001406f0 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+0x6e2/0xd10 drivers/video/fbdev/core/bitblit.c:188 fbcon_putcs+0x336/0x4f0 drivers/video/fbdev/core/fbcon.c:1269 do_update_region+0x399/0x630 drivers/tty/vt/vt.c:683 redraw_screen+0x5e1/0x870 drivers/tty/vt/vt.c:1031 fbcon_blank+0xae6/0xec0 drivers/video/fbdev/core/fbcon.c:2223 do_unblank_screen+0x241/0x610 drivers/tty/vt/vt.c:4276 vt_ioctl+0x12c3/0x2380 drivers/tty/vt/vt_ioctl.c:498 tty_ioctl+0x5b0/0x15c0 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: 0033:0x7f327131f017 Code: 00 00 00 48 8b 05 81 7e 2b 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 7e 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffd19809b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007f327131f017 RDX: 0000000000000000 RSI: 0000000000004b3a RDI: 0000000000000013 RBP: 0000000000000001 R08: 00007ffd19809b90 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000001d R14: 0000000000000004 R15: 0000556efdf86210 Modules linked in: CR2: ffff888001000040 ---[ end trace 2fb8219ef69d07aa ]--- RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline] RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1176 [inline] RIP: 0010:vga16fb_imageblit+0xc2f/0x2260 drivers/video/fbdev/vga16fb.c:1260 Code: 48 83 c5 01 48 89 f8 48 89 f9 48 83 c3 01 48 c1 e8 03 83 e1 07 42 0f b6 04 38 38 c8 7f 08 84 c0 0f 85 86 0f 00 00 0f b6 45 ff <88> 02 44 89 e6 31 ff 29 de e8 33 8c bc fd 4c 39 eb 75 b8 48 8b 7c RSP: 0018:ffff8880b5a0f448 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888001000041 RCX: 0000000000000000 RDX: ffff888001000040 RSI: ffffffff83a8460f RDI: ffff888238ca0ae8 RBP: ffff888238ca0ae9 R08: 0000000000003133 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000001000042 R13: ffff888001000042 R14: ffff888001000040 R15: dffffc0000000000 FS: 00007f3272d4f500(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001000040 CR3: 00000000a3902000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400