@Vald: This is from your attachment: [21965.367843] kernel BUG at /build/linux-azure-njdnVX/linux-azure-4.15.0/net/ipv4/ip_output.c:636! [21965.377590] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-1056-azure #61-Ubuntu [21965.435777] RIP: 0010:ip_do_fragment+0x571/0x860 [21965.435777] ip_fragment.constprop.47+0x43/0x90 [21965.435777] ip_finish_output+0xf6/0x270 [21965.435777] ip_output+0x75/0xf0 [21965.435777] ip_forward_finish+0x51/0x80 [21965.435777] ip_forward+0x38a/0x480 [21965.435777] ip_rcv_finish+0x122/0x410 [21965.435777] ip_rcv+0x292/0x360 [21965.435777] __netif_receive_skb_core+0x809/0xbc0 [21965.435777] __netif_receive_skb+0x18/0x60 [21965.435777] netif_receive_skb_internal+0x37/0xe0 [21965.435777] napi_gro_receive+0xd0/0xf0 [21965.435777] netvsc_recv_callback+0x16d/0x220 [hv_netvsc] [21965.435777] rndis_filter_receive+0x23b/0x580 [hv_netvsc] [21965.435777] netvsc_poll+0x17e/0x630 [hv_netvsc] [21965.435777] net_rx_action+0x265/0x3b0 [21965.435777] __do_softirq+0xf5/0x2a8 [21965.435777] irq_exit+0x106/0x110 [21965.435777] hyperv_vector_handler+0x63/0x76
So you're running a 4.15.0-1056-azure kernel, which panics at RIP: 0010:ip_do_fragment+0x571/0x860 (net/ipv4/ip_output.c:636). This is a known issue in this version of the kernel and we're working on a new version which will fix the issue: The identified upsream fix is: commit 5d407b071dc369c26a38398326ee2be53651cfe4 Author: Taehee Yoo <ap420...@gmail.com> Date: Mon Sep 10 02:47:05 2018 +0900 Subject: ip: frags: fix crash in ip_do_fragment() ( https://github.com/torvalds/linux/commit/5d407b071dc369c26a38398326ee2be53651cfe4 ) Meanwhile, if it's possible, please downgrade the kernel to from -1056 to -1052, which per support does not crash. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1822133 Title: Azure Instance never recovered during series of instance reboots. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1822133/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
