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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-01 21:35:14 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-01 21:35:14 +0200 |
| commit | 3e4c5a6261770bced301b5e74233e7866166ea5b (patch) | |
| tree | 9379fddaba693ef8a045da06efee8529baa5f6f4 /gitlab/issues_text/target_missing/host_missing/accel_missing/2151 | |
| parent | e5634e2806195bee44407853c4bf8776f7abfa4f (diff) | |
| download | qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.tar.gz qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.zip | |
clean up repository
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/2151')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_missing/2151 | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/2151 b/gitlab/issues_text/target_missing/host_missing/accel_missing/2151 deleted file mode 100644 index feee5a9d0..000000000 --- a/gitlab/issues_text/target_missing/host_missing/accel_missing/2151 +++ /dev/null @@ -1,195 +0,0 @@ -Nested vIOMMU PCI Passthrough kernel panics -Description of problem: -In an effort to test vIOMMU according to <https://wiki.qemu.org/Features/VT-d> I've run into a kernel panic on an L2 guest receiving the L1 hypervisor's PCI passed virtual macvtap hostdev. Upon an `ifup` inside the L2 guest, on the network device passed through from the L1 host, the following kernel panic occurs and the L2 guest reboots: - -``` -[ OK ] Started ifup@enp0s2.service - ifup for enp0s2. -[ OK ] Started ifup@enp0s3.service - ifup for enp0s3.[ 24.019839] audit: type=1400 audit(1707113302.472:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/man" pid=457 comm="apparmor_parser" - - Starting networking.service - Raise network interfaces... -[ 24.255671] audit: type=1400 audit(1707113302.472:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="man_filter" pid=457 comm="apparmor_parser" -[ OK ] Finished systemd-tmpfiles-…te Volatile Files and Directories. -[ 24.361355] audit: type=1400 audit(1707113302.472:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="man_groff" pid=457 comm="apparmor_parser" - Starting systemd-timesyncd… - Network Time Synchronization... - Starting systemd-update-ut…rd System Boot/Shutdown in UTMP... -[ OK ] Finished systemd-update-ut…cord System Boot/Shutdown in UTMP. -[ OK ] Finished networking.service - Raise network interfaces. -[ OK ] Reached target network.target - Network. -[ OK ] Started systemd-timesyncd.…0m - Network Time Synchronization. -[ OK ] Reached target sysinit.target - System Initialization. -[ OK ] Started etckeeper.timermit of changes in /etc directory. -[ OK ] Started systemd-tmpfiles-c… Cleanup of Temporary Directories. -[ OK ] Reached target time-set.target - System Time Set. -[ OK ] Started apt-daily.timer - Daily apt download activities.[ 46.187450] rcu: INFO: rcu_preempt self-detected stall on CPU -[ 46.187522] rcu: 0-...!: (5250 ticks this GP) idle=3774/1/0x4000000000000000 softirq=12350/12350 fqs=0 -[ 46.187522] (t=5250 jiffies g=8669 q=7 ncpus=1) -[ 46.187522] rcu: rcu_preempt kthread timer wakeup didn't happen for 5249 jiffies! g8669 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 -[ 46.187522] rcu: Possible timer handling issue on cpu=0 timer-softirq=2282 -[ 46.187522] rcu: rcu_preempt kthread starved for 5250 jiffies! g8669 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 -[ 46.187522] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. -[ 46.187522] rcu: RCU grace-period kthread stack dump: -[ 46.187522] task:rcu_preempt state:I stack:0 pid:15 ppid:2 flags:0x00004000 -[ 46.187522] Call Trace: -[ 46.187522] <TASK> -[ 46.187522] __schedule+0x34d/0x9e0 -[ 46.187522] ? rcu_gp_cleanup+0x460/0x460 -[ 46.187522] schedule+0x5a/0xd0 -[ 46.187522] schedule_timeout+0x94/0x150 -[ 46.187522] ? __bpf_trace_tick_stop+0x10/0x10 -[ 46.187522] rcu_gp_fqs_loop+0x141/0x550 -[ 46.187522] rcu_gp_kthread+0xd0/0x190 -[ 46.187522] kthread+0xda/0x100 -[ 46.187522] ? kthread_complete_and_exit+0x20/0x20 -[ 46.187522] ret_from_fork+0x22/0x30 -[ 46.187522] </TASK> -[ 46.187522] rcu: Stack dump where RCU GP kthread last ran: -[ 46.187522] CPU: 0 PID: 487 Comm: ip Not tainted 6.1.0-17-amd64 #1 Debian 6.1.69-1 -[ 46.187522] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Arch Linux 1.16.3-1-1 04/01/2014 -[ 46.187522] RIP: 0010:virtqueue_get_buf_ctx_split+0x94/0xd0 [virtio_ring] -[ 46.187522] Code: 42 fe ff ff 0f b7 43 58 83 c0 01 66 89 43 58 f6 83 80 00 00 00 01 75 12 80 7b 4a 00 48 8b 4b 70 8b 53 60 74 0f 66 87 44 51 04 <48> 89 e8 5b 5d c3 cc cc cc cc 66 89 44 51 04 0f ae f0 48 89 e8 5b -[ 46.187522] RSP: 0018:ffff960c408135c8 EFLAGS: 00000246 -[ 46.187522] RAX: 0000000000000000 RBX: ffff88e04e976100 RCX: 0000000000000001 -[ 46.187522] RDX: 0000000000000000 RSI: ffff960c408135e4 RDI: ffff88e04e976100 -[ 46.187522] RBP: 0000000000000000 R08: 0000000000000004 R09: ffff88e0034fa980 -[ 46.187522] R10: 0000000000000003 R11: ffff960c40813628 R12: 0000000000000002 -[ 46.187522] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 -[ 46.187522] FS: 00007f11d16da2c0(0000) GS:ffff88e07dc00000(0000) knlGS:0000000000000000 -[ 46.187522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 -[ 46.187522] CR2: 00007f11d17ff8d0 CR3: 0000000004ac6000 CR4: 00000000000006f0 -[ 46.187522] Call Trace: -[ 46.187522] <IRQ> -[ 46.187522] ? rcu_check_gp_kthread_starvation+0xec/0xfd -[ 46.187522] ? rcu_sched_clock_irq.cold+0xe3/0x459 -[ 46.187522] ? update_load_avg+0x7e/0x780 -[ 46.187522] ? sched_slice+0x87/0x140 -[ 46.187522] ? timekeeping_update+0xdd/0x130 -[ 46.187522] ? timekeeping_advance+0x377/0x570 -[ 46.187522] ? update_process_times+0x70/0xb0 -[ 46.187522] ? tick_sched_handle+0x22/0x60 -[ 46.187522] ? tick_sched_timer+0x63/0x80 -[ 46.187522] ? tick_sched_do_timer+0xa0/0xa0 -[ 46.187522] ? __hrtimer_run_queues+0x112/0x2b0 -[ 46.187522] ? hrtimer_interrupt+0xf4/0x210 -[ 46.187522] ? __sysvec_apic_timer_interrupt+0x5d/0x110 -[ 46.187522] ? sysvec_apic_timer_interrupt+0x69/0x90 -[ 46.187522] </IRQ> -[ 46.187522] <TASK> -[ 46.187522] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 -[ 46.187522] ? virtqueue_get_buf_ctx_split+0x94/0xd0 [virtio_ring] -[ 46.187522] virtnet_send_command+0x18e/0x1e0 [virtio_net] -[ 46.187522] virtnet_set_rx_mode+0xd4/0x2d0 [virtio_net] -[ 46.187522] __dev_open+0x12b/0x1a0 -[ 46.187522] __dev_change_flags+0x1d2/0x240 -[ 46.187522] dev_change_flags+0x22/0x60 -[ 46.187522] do_setlink+0x37c/0x12b0 -[ 46.187522] ? __nla_validate_parse+0x61/0xc00 -[ 46.187522] __rtnl_newlink+0x623/0x9e0 -[ 46.187522] ? __kmem_cache_alloc_node+0x191/0x2a0 -[ 46.187522] rtnl_newlink+0x43/0x70 -[ 46.187522] rtnetlink_rcv_msg+0x14e/0x3b0 -[ 46.187522] ? __kmem_cache_alloc_node+0x191/0x2a0 -[ 46.187522] ? __alloc_skb+0x88/0x1a0 -[ 46.187522] ? rtnl_calcit.isra.0+0x140/0x140 -[ 46.187522] netlink_rcv_skb+0x51/0x100 -[ 46.187522] netlink_unicast+0x24a/0x390 -[ 46.187522] netlink_sendmsg+0x250/0x4c0 -[ 46.187522] __sock_sendmsg+0x5f/0x70 -[ 46.187522] ____sys_sendmsg+0x277/0x2f0 -[ 46.187522] ? copy_msghdr_from_user+0x7d/0xc0 -[ 46.187522] ___sys_sendmsg+0x9a/0xe0 -[ 46.187522] __sys_sendmsg+0x76/0xc0 -[ 46.187522] do_syscall_64+0x5b/0xc0 -[ 46.187522] ? exit_to_user_mode_prepare+0x40/0x1e0 -[ 46.187522] ? syscall_exit_to_user_mode+0x27/0x40 -[ 46.187522] ? do_syscall_64+0x67/0xc0 -[ 46.187522] ? do_user_addr_fault+0x1b0/0x580 -[ 46.187522] ? exit_to_user_mode_prepare+0x40/0x1e0 -[ 46.187522] entry_SYSCALL_64_after_hwframe+0x64/0xce -[ 46.187522] RIP: 0033:0x7f11d1811af0 -[ 46.187522] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d f1 fa 0c 00 00 74 17 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 89 54 -[ 46.187522] RSP: 002b:00007ffe21b533a8 EFLAGS: 00000202 ORIG_RAX: 000000000000002e -[ 46.187522] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f11d1811af0 -[ 46.187522] RDX: 0000000000000000 RSI: 00007ffe21b53410 RDI: 0000000000000003 -[ 46.187522] RBP: 0000000000000003 R08: 0000000065c07b57 R09: 00005580e154e2a0 -[ 46.187522] R10: 00007ffe21b52e34 R11: 0000000000000202 R12: 0000000065c07b58 -[ 46.187522] R13: 00005580e016e020 R14: 0000000000000001 R15: 0000000000000000 -[ 46.187522] </TASK> -[ 46.187522] CPU: 0 PID: 487 Comm: ip Not tainted 6.1.0-17-amd64 #1 Debian 6.1.69-1 -[ 46.187522] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Arch Linux 1.16.3-1-1 04/01/2014 -[ 46.187522] RIP: 0010:virtqueue_get_buf_ctx_split+0x94/0xd0 [virtio_ring] -[ 46.187522] Code: 42 fe ff ff 0f b7 43 58 83 c0 01 66 89 43 58 f6 83 80 00 00 00 01 75 12 80 7b 4a 00 48 8b 4b 70 8b 53 60 74 0f 66 87 44 51 04 <48> 89 e8 5b 5d c3 cc cc cc cc 66 89 44 51 04 0f ae f0 48 89 e8 5b -[ 46.187522] RSP: 0018:ffff960c408135c8 EFLAGS: 00000246 -[ 46.187522] RAX: 0000000000000000 RBX: ffff88e04e976100 RCX: 0000000000000001 -[ 46.187522] RDX: 0000000000000000 RSI: ffff960c408135e4 RDI: ffff88e04e976100 -[ 46.187522] RBP: 0000000000000000 R08: 0000000000000004 R09: ffff88e0034fa980 -[ 46.187522] R10: 0000000000000003 R11: ffff960c40813628 R12: 0000000000000002 -[ 46.187522] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 -[ 46.187522] FS: 00007f11d16da2c0(0000) GS:ffff88e07dc00000(0000) knlGS:0000000000000000 -[ 46.187522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 -[ 46.187522] CR2: 00007f11d17ff8d0 CR3: 0000000004ac6000 CR4: 00000000000006f0 -[ 46.187522] Call Trace: -[ 46.187522] <IRQ> -[ 46.187522] ? rcu_dump_cpu_stacks+0xa4/0xe0 -[ 46.187522] ? rcu_sched_clock_irq.cold+0xe8/0x459 -[ 46.187522] ? update_load_avg+0x7e/0x780 -[ 46.187522] ? sched_slice+0x87/0x140 -[ 46.187522] ? timekeeping_update+0xdd/0x130 -[ 46.187522] ? timekeeping_advance+0x377/0x570 -[ 46.187522] ? update_process_times+0x70/0xb0 -[ 46.187522] ? tick_sched_handle+0x22/0x60 -[ 46.187522] ? tick_sched_timer+0x63/0x80 -[ 46.187522] ? tick_sched_do_timer+0xa0/0xa0 -[ 46.187522] ? __hrtimer_run_queues+0x112/0x2b0 -[ 46.187522] ? hrtimer_interrupt+0xf4/0x210 -[ 46.187522] ? __sysvec_apic_timer_interrupt+0x5d/0x110 -[ 46.187522] ? sysvec_apic_timer_interrupt+0x69/0x90 -[ 46.187522] </IRQ> -[ 46.187522] <TASK> -[ 46.187522] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 -[ 46.187522] ? virtqueue_get_buf_ctx_split+0x94/0xd0 [virtio_ring] -[ 46.187522] virtnet_send_command+0x18e/0x1e0 [virtio_net] -[ 46.187522] virtnet_set_rx_mode+0xd4/0x2d0 [virtio_net] -[ 46.187522] __dev_open+0x12b/0x1a0 -[ 46.187522] __dev_change_flags+0x1d2/0x240 -[ 46.187522] dev_change_flags+0x22/0x60 -[ 46.187522] do_setlink+0x37c/0x12b0 -[ 46.187522] ? __nla_validate_parse+0x61/0xc00 -[ 46.187522] __rtnl_newlink+0x623/0x9e0 -[ 46.187522] ? __kmem_cache_alloc_node+0x191/0x2a0 -[ 46.187522] rtnl_newlink+0x43/0x70 -[ 46.187522] rtnetlink_rcv_msg+0x14e/0x3b0 -[ 46.187522] ? __kmem_cache_alloc_node+0x191/0x2a0 -[ 46.187522] ? __alloc_skb+0x88/0x1a0 -[ 46.187522] ? rtnl_calcit.isra.0+0x140/0x140 -[ 46.187522] netlink_rcv_skb+0x51/0x100 -[ 46.187522] netlink_unicast+0x24a/0x390 -[ 46.187522] netlink_sendmsg+0x250/0x4c0 -[ 46.187522] __sock_sendmsg+0x5f/0x70 -[ 46.187522] ____sys_sendmsg+0x277/0x2f0 -[ 46.187522] ? copy_msghdr_from_user+0x7d/0xc0 -[ 46.187522] ___sys_sendmsg+0x9a/0xe0 -[ 46.187522] __sys_sendmsg+0x76/0xc0 -[ 46.187522] do_syscall_64+0x5b/0xc0 -[ 46.187522] ? exit_to_user_mode_prepare+0x40/0x1e0 -[ 46.187522] ? syscall_exit_to_user_mode+0x27/0x40 -[ 46.187522] ? do_syscall_64+0x67/0xc0 -[ 46.187522] ? do_user_addr_fault+0x1b0/0x580 -[ 46.187522] ? exit_to_user_mode_prepare+0x40/0x1e0 -[ 46.187522] entry_SYSCALL_64_after_hwframe+0x64/0xce -[ 46.187522] RIP: 0033:0x7f11d1811af0 -[ 46.187522] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d f1 fa 0c 00 00 74 17 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 89 54 -[ 46.187522] RSP: 002b:00007ffe21b533a8 EFLAGS: 00000202 ORIG_RAX: 000000000000002e -[ 46.187522] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f11d1811af0 -[ 46.187522] RDX: 0000000000000000 RSI: 00007ffe21b53410 RDI: 0000000000000003 -[ 46.187522] RBP: 0000000000000003 R08: 0000000065c07b57 R09: 00005580e154e2a0 -[ 46.187522] R10: 00007ffe21b52e34 R11: 0000000000000202 R12: 0000000065c07b58 -[ 46.187522] R13: 00005580e016e020 R14: 0000000000000001 R15: 0000000000000000 -[ 46.187522] </TASK> -``` -Steps to reproduce: -1. Create the following nested passthrough configuration -2. Attempt to configure the L1 network hostdev interface inside the L2 guest - -Any attempt will cause the kernel panics documented. -Additional information: -# |