BUG: unable to handle kernel paging request at ffffffffffffffb0 PGD 8c70067 P4D 8c70067 PUD 8c72067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 939 Comm: syz-executor.5 Not tainted 4.19.134-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vsscanf+0x1dd/0x24c0 lib/vsprintf.c:2932 Code: 89 e9 48 c1 ea 03 4c 89 ac 24 d8 00 00 00 83 e1 07 41 0f b6 04 24 42 0f b6 14 3a 4c 89 eb 38 ca 7f 08 84 d2 0f 85 e6 1b 00 00 <44> 0f b6 75 00 89 c7 88 44 24 08 44 89 f6 e8 00 07 33 fa 0f b6 44 RSP: 0018:ffff8881f7536a10 EFLAGS: 00010246 RAX: 0000000000000076 RBX: ffff8881fc53c001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8736a8ba RDI: 0000000000000001 RBP: ffffffffffffffb0 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881fc53c000 R13: ffff8881fc53c001 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f78fde90700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffb0 CR3: 0000000209b41000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sscanf+0xbb/0xf0 lib/vsprintf.c:3198 __dev_alloc_name net/core/dev.c:1081 [inline] dev_alloc_name_ns+0x1c4/0x440 net/core/dev.c:1115 dev_get_valid_name+0x67/0xe0 net/core/dev.c:1150 register_netdevice+0x267/0x10f0 net/core/dev.c:8640 veth_newlink+0x3eb/0x930 drivers/net/veth.c:1143 rtnl_newlink+0x1027/0x15a0 net/core/rtnetlink.c:3141 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4777 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c369 Code: 8d b6 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 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f78fde8fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002b740 RCX: 000000000045c369 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007ffd46b24b3f R14: 00007f78fde909c0 R15: 000000000078bf0c Modules linked in: CR2: ffffffffffffffb0 BUG: unable to handle kernel paging request at ffff888000a53000 PGD c601067 P4D c601067 PUD c602067 PMD a52063 PTE 0 Oops: 0002 [#2] PREEMPT SMP KASAN CPU: 0 PID: 939 Comm: syz-executor.5 Not tainted 4.19.134-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:vga16fb_fillrect+0x9c0/0x1940 drivers/video/fbdev/vga16fb.c:923 Code: e3 fd 48 63 44 24 10 45 31 f6 48 89 04 24 e8 e7 cb e3 fd 31 ff 89 de 31 ed e8 4c cd e3 fd 85 db 4d 89 ec 74 22 e8 d0 cb e3 fd <45> 88 34 24 83 c5 01 89 df 49 83 c4 01 89 ee e8 ac cc e3 fd 39 eb RSP: 0018:ffff8881f7536198 EFLAGS: 00010046 RAX: 0000000000040000 RBX: 00000000000000a0 RCX: ffffc9001051f000 RDX: 0000000000040000 RSI: ffffffff8385e370 RDI: 0000000000000004 RBP: 0000000000000080 R08: 0000000000000001 R09: 00000000000000a0 R10: 0000000000000004 R11: 0000000000000000 R12: ffff888000a53000 R13: ffff888000a52f80 R14: 0000000000000000 R15: 00000000ffff07b3 FS: 00007f78fde90700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888000a53000 CR3: 0000000209b41000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bit_clear_margins+0x2d5/0x4a0 drivers/video/fbdev/core/bitblit.c:232 fbcon_clear_margins+0x1e2/0x350 drivers/video/fbdev/core/fbcon.c:1342 fbcon_switch+0x1038/0x1d26 drivers/video/fbdev/core/fbcon.c:2324 redraw_screen+0x37d/0x870 drivers/tty/vt/vt.c:1015 fbcon_blank+0xae6/0xec0 drivers/video/fbdev/core/fbcon.c:2395 do_unblank_screen+0x241/0x610 drivers/tty/vt/vt.c:4268 bust_spinlocks+0x5b/0xe0 oops_end+0x2b/0xe0 arch/x86/kernel/dumpstack.c:336 no_context+0x75a/0x940 arch/x86/mm/fault.c:830 __bad_area_nosemaphore+0x2de/0x400 arch/x86/mm/fault.c:918 __do_page_fault+0x1c5/0xde0 arch/x86/mm/fault.c:1344 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:vsscanf+0x1dd/0x24c0 lib/vsprintf.c:2932 Code: 89 e9 48 c1 ea 03 4c 89 ac 24 d8 00 00 00 83 e1 07 41 0f b6 04 24 42 0f b6 14 3a 4c 89 eb 38 ca 7f 08 84 d2 0f 85 e6 1b 00 00 <44> 0f b6 75 00 89 c7 88 44 24 08 44 89 f6 e8 00 07 33 fa 0f b6 44 RSP: 0018:ffff8881f7536a10 EFLAGS: 00010246 RAX: 0000000000000076 RBX: ffff8881fc53c001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8736a8ba RDI: 0000000000000001 RBP: ffffffffffffffb0 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881fc53c000 R13: ffff8881fc53c001 R14: 0000000000000000 R15: dffffc0000000000 sscanf+0xbb/0xf0 lib/vsprintf.c:3198 __dev_alloc_name net/core/dev.c:1081 [inline] dev_alloc_name_ns+0x1c4/0x440 net/core/dev.c:1115 dev_get_valid_name+0x67/0xe0 net/core/dev.c:1150 register_netdevice+0x267/0x10f0 net/core/dev.c:8640 veth_newlink+0x3eb/0x930 drivers/net/veth.c:1143 rtnl_newlink+0x1027/0x15a0 net/core/rtnetlink.c:3141 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4777 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c369 Code: 8d b6 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 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f78fde8fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002b740 RCX: 000000000045c369 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007ffd46b24b3f R14: 00007f78fde909c0 R15: 000000000078bf0c Modules linked in: CR2: ffff888000a53000 ---[ end trace e38331c2210b1143 ]--- RIP: 0010:vsscanf+0x1dd/0x24c0 lib/vsprintf.c:2932 Code: 89 e9 48 c1 ea 03 4c 89 ac 24 d8 00 00 00 83 e1 07 41 0f b6 04 24 42 0f b6 14 3a 4c 89 eb 38 ca 7f 08 84 d2 0f 85 e6 1b 00 00 <44> 0f b6 75 00 89 c7 88 44 24 08 44 89 f6 e8 00 07 33 fa 0f b6 44 RSP: 0018:ffff8881f7536a10 EFLAGS: 00010246 RAX: 0000000000000076 RBX: ffff8881fc53c001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8736a8ba RDI: 0000000000000001 RBP: ffffffffffffffb0 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881fc53c000 R13: ffff8881fc53c001 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f78fde90700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888000a53000 CR3: 0000000209b41000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400