This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1945868 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1945868 Title: focal kvm virtio_net set_features failed (-22) Status in linux package in Ubuntu: Incomplete Status in qemu-kvm package in Ubuntu: New Bug description: Setup linux-modules-5.4.0-88-generic within focal guest on a (equal) ubuntu 20.04 kvm bare metal machine. When using virtio as network driver it is failing with: net eth0: Fail to set guest offload. virtio_net virtio1 eth0: set_features() failed (-22); wanted 0x0000008000174a29, left 0x0 00000800017ca29 followed by further kern log entries: ------------[ cut here ]------------ netdevice: br0: failed to disable 0x0000000000008000 on eth0! WARNING: CPU: 0 PID: 1048 at net/core/dev.c:8683 __netdev_update_features+0x4d1/0x9f0 Modules linked in: macvlan virtio_gpu ttm drm_kms_helper fb_sys_fops input_leds syscopyarea joydev sysfillrect serio_raw sysimgblt mac_hid sch_fq_codel 9p fscache 9pnet_virtio 9pnet bridge stp llc drm virtio_rng ip_tables x_tables autofs4 dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio libcrc32c psmouse virtio_net i2c_piix4 virtio_blk net_failover failover pata_acpi floppy CPU: 0 PID: 1048 Comm: brctl Tainted: G W 5.4.0-88-generic #99-Ubuntu Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 RIP: 0010:__netdev_update_features+0x4d1/0x9f0 Code: c7 c2 9b 30 9b a0 4c 8b 4d 88 48 85 c0 4d 0f 44 d4 4d 89 f0 48 8d 4d b8 4c 89 ca 4c 89 d6 48 c7 c7 d0 94 a3 a0 e8 dc 2d 19 00 <0f> 0b e9 5b fe ff ff 8b 45 9c 85 c0 0f 84 96 00 00 00 8b 45 9c f7 RSP: 0018:ffffbf1840e0ba98 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 000000000000000f RCX: 0000000000000006 RDX: 0000000000000007 RSI: 0000000000000082 RDI: ffff9c2c13a178c0 RBP: ffffbf1840e0bb10 R08: 00000000000002d1 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000000001 R12: ffff9c2c0b258000 R13: ffff9c2c0b2580c0 R14: ffff9c2c0615a000 R15: 000000000000000f FS: 00007f98be558580(0000) GS:ffff9c2c13a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc24a1080 CR3: 000000030b3e4000 CR4: 00000000000006f0 Call Trace: netdev_update_features+0x25/0x60 br_device_event+0x20f/0x300 [bridge] notifier_call_chain+0x55/0x80 raw_notifier_call_chain+0x16/0x20 call_netdevice_notifiers_info+0x2e/0x60 netdev_update_features+0x59/0x60 dev_disable_lro+0x21/0xf0 br_add_if+0x301/0x650 [bridge] add_del_if+0x67/0x80 [bridge] br_dev_ioctl+0x54/0x80 [bridge] dev_ifsioc+0xe5/0x3e0 ? _cond_resched+0x19/0x30 dev_ioctl+0x2dd/0x470 sock_do_ioctl+0xa8/0x140 ? evict+0x14c/0x1b0 sock_ioctl+0x24f/0x3c0 ? _cond_resched+0x19/0x30 ? get_max_files+0x20/0x20 do_vfs_ioctl+0x407/0x670 ksys_ioctl+0x67/0x90 __x64_sys_ioctl+0x1a/0x20 do_syscall_64+0x57/0x190 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f98be47c50b Code: 0f 1e fa 48 8b 05 85 39 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 39 0d 00 f7 d8 64 89 01 48 RSP: 002b:00007ffd783321e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f98be47c50b RDX: 00007ffd78332210 RSI: 00000000000089a2 RDI: 0000000000000003 RBP: 00007ffd78332210 R08: 0000000000000020 R09: fefefeff77686d74 R10: 00007ffd78333e80 R11: 0000000000000246 R12: 00007ffd78333e7e R13: 00007ffd78333e7e R14: 0000000000000000 R15: 0000000000000000 ---[ end trace 240d361752e8f3f0 ]--- ------------[ cut here ]------------ Temporary solution is to return to the old rtl8139 driver and slow network down To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1945868/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp