netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. divide error: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 9680 Comm: syz-executor.3 Not tainted 4.14.229-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888046b6a1c0 task.stack: ffff888046b78000 RIP: 0010:netem_enqueue+0x1364/0x2df0 net/sched/sch_netem.c:511 RSP: 0018:ffff888046b7f7c0 EFLAGS: 00010246 RAX: 00000000ade40300 RBX: ffff88809b7242c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88809b522cc0 RDI: ffff88809b522d44 RBP: 0000000000000010 R08: ffff88809b522d98 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff88809b4738e0 R14: 0000000000000000 R15: ffff88809b4736c0 FS: 00007fc7c7928700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000970004 CR3: 0000000096b28000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netem_enqueue+0x889/0x2df0 net/sched/sch_netem.c:475 __dev_xmit_skb net/core/dev.c:3225 [inline] __dev_queue_xmit+0x121d/0x2480 net/core/dev.c:3489 __netlink_deliver_tap_skb net/netlink/af_netlink.c:273 [inline] __netlink_deliver_tap net/netlink/af_netlink.c:291 [inline] netlink_deliver_tap+0x60c/0x7d0 net/netlink/af_netlink.c:302 netlink_deliver_tap_kernel net/netlink/af_netlink.c:311 [inline] netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline] netlink_unicast+0x485/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 sock_write_iter+0x22c/0x370 net/socket.c:925 call_write_iter include/linux/fs.h:1778 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007fc7c7928188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007fff2a61436f R14: 00007fc7c7928300 R15: 0000000000022000 Code: 4c 89 44 24 20 89 4c 24 18 89 44 24 10 e8 75 6c a4 fb 4c 8b 44 24 20 8b 4c 24 18 8b 44 24 10 48 8b 34 24 31 d2 2b 8e 84 00 00 00 f1 48 b8 00 00 00 00 00 fc ff df 48 01 d3 48 89 d9 48 c1 e9 RIP: netem_enqueue+0x1364/0x2df0 net/sched/sch_netem.c:511 RSP: ffff888046b7f7c0 ---[ end trace 5373354c0412a359 ]---