BUG: unable to handle kernel (2)

Kernel	Title	Repro	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	BUG: unable to handle kernel	C	inconclusive	2	1224d	1641d	0/1	upstream: reported C repro on 2019/10/25 23:52
upstream	BUG: unable to handle kernel (3) mm	C		2	2120d	2156d	0/26	closed as invalid on 2019/06/10 23:32
upstream	BUG: unable to handle kernel			1	2424d	2424d	0/26	closed as invalid on 2017/09/03 08:49

IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 kasan: CONFIG_KASAN_INLINE enabled BUG: unable to handle kernel kasan: GPF could be caused by NULL-ptr deref or user memory access paging request at ffff8801b4435000 IP: __memmove+0x24/0x1a0 arch/x86/lib/memmove_64.S:43 PGD 9cee067 P4D 9cee067 PUD 1ba6a6063 PMD 1d158f063 PTE 80000001b4435161 Oops: 0003 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 4326 Comm: syz-executor4 Not tainted 4.16.0-rc7+ #278 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__memmove+0x24/0x1a0 arch/x86/lib/memmove_64.S:43 RSP: 0018:ffff8801bcc2edd8 EFLAGS: 00010287 RAX: ffff8801b3b950c4 RBX: fffffffffffffffe RCX: ffffffffff7600c2 RDX: fffffffffffffffe RSI: ffff8801b4434ffc RDI: ffff8801b4435000 RBP: ffff8801bcc2edf8 R08: ffff8801b3b950be R09: ffffed0036772a19 R10: 0000000000000001 R11: ffffed0036772a18 R12: ffff8801b3b950c4 R13: ffff8801b3b950c0 R14: ffff8801bc67ae86 R15: ffff8801bc67adc0 FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7f33b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffff8801b4435000 CR3: 00000001bee22001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memmove include/linux/string.h:360 [inline] skb_reorder_vlan_header net/core/skbuff.c:5031 [inline] skb_vlan_untag+0x470/0xc40 net/core/skbuff.c:5061 __netif_receive_skb_core+0x119c/0x3460 net/core/dev.c:4460 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4627 netif_receive_skb_internal+0x10b/0x670 net/core/dev.c:4701 netif_receive_skb+0xae/0x390 net/core/dev.c:4725 tun_rx_batched.isra.50+0x5ee/0x870 drivers/net/tun.c:1555 tun_get_user+0x299e/0x3c20 drivers/net/tun.c:1962 tun_chr_write_iter+0xb9/0x160 drivers/net/tun.c:1990 call_write_iter include/linux/fs.h:1782 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline] do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f37c99 RSP: 002b:00000000f7f3309c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000180 RDX: 000000000000004a RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: 90 90 90 90 90 90 90 48 89 f8 48 83 fa 20 0f 82 03 01 00 00 48 39 fe 7d 0f 49 89 f0 49 01 d0 49 39 f8 0f 8f 9f 00 00 00 48 89 d1 <f3> a4 c3 48 81 fa a8 02 00 00 72 05 40 38 fe 74 3b 48 83 ea 20 RIP: __memmove+0x24/0x1a0 arch/x86/lib/memmove_64.S:43 RSP: ffff8801bcc2edd8 CR2: ffff8801b4435000 ---[ end trace bba77f887fd99164 ]--- general protection fault: 0000 [#2] SMP KASAN Dumping ftrace buffer: