diff options
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/1150')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_missing/1150 | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1150 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1150 deleted file mode 100644 index 3fa3ef7c8..000000000 --- a/gitlab/issues_text/target_missing/host_missing/accel_missing/1150 +++ /dev/null @@ -1,84 +0,0 @@ -guest Linux Kernel hangs and reports CPU lockup/stuck (Qemu >= 6.0.1 regression) -Description of problem: -Since at least [qemu-6.0.1](https://download.qemu.org/qemu-6.0.1.tar.xz) my VM guest is having CPU problems. It looks like [qemu-6.0.0](https://download.qemu.org/qemu-6.0.0.tar.xz) is fine, but I can't confirm this 100 %. - -Problem: The guest hangs for about 30 seconds and dmesg reports errors. - -<details> -<summary>dmesg</summary> - -``` -[ 310.791732] watchdog: BUG: soft lockup - CPU#1 stuck for 25s! [swapper/1:0] -[ 310.791753] Modules linked in: ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_filter bpfilter af_packet iscsi_ibft iscsi_boot_sysfs rfkill dm_crypt essiv authenc pktcdvd intel_rapl_msr intel_rapl_common kvm_intel kvm cirrus drm_kms_helper irqbypass cec pcspkr joydev rc_core syscopyarea sysfillrect sysimgblt virtio_balloon fb_sys_fops i2c_piix4 button nls_iso8859_1 nls_cp437 vfat fat drm fuse configfs ip_tables x_tables ext4 crc16 mbcache jbd2 hid_generic usbhid sd_mod t10_pi virtio_scsi virtio_net net_failover virtio_blk failover sr_mod cdrom ata_generic crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel crypto_simd xhci_pci xhci_pci_renesas xhci_hcd cryptd serio_raw ehci_pci uhci_hcd ehci_hcd usbcore ata_piix ahci libahci virtio_pci virtio_pci_modern_dev libata floppy qemu_fw_cfg dm_mirror dm_region_hash dm_log dm_mod sg scsi_mod -[ 310.792102] Supported: Yes -[ 310.792108] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.14.21-150400.22-default #1 SLE15-SP4 0b6a6578ade2de5c4a0b916095dff44f76ef1704 -[ 310.792121] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 -[ 310.792127] RIP: 0010:__do_softirq+0x6e/0x2bc -[ 310.792146] Code: 8b 70 2c 81 60 2c ff f7 ff ff 89 74 24 14 c7 44 24 10 0a 00 00 00 48 c7 c0 c0 30 03 00 65 66 c7 00 00 00 fb 66 0f 1f 44 00 00 <bb> ff ff ff ff 41 0f bc de 83 c3 01 89 1c 24 0f 84 92 00 00 00 49 -[ 310.792154] RSP: 0018:ffffb9a8c00d0f98 EFLAGS: 00000206 -[ 310.792163] RAX: 00000000000330c0 RBX: ffffb9a8c0093e18 RCX: 0000000034b47837 -[ 310.792169] RDX: ffff9835c02dd100 RSI: 0000000004200042 RDI: 0000000000000040 -[ 310.792175] RBP: 0000000000000022 R08: ffffb9a8c0093e18 R09: 0000000000000001 -[ 310.792180] R10: 0000000000000002 R11: 0000000000000283 R12: 0000000000000001 -[ 310.792185] R13: 0000000000000000 R14: 0000000000000040 R15: 0000000000000000 -[ 310.792191] FS: 0000000000000000(0000) GS:ffff9836f7d00000(0000) knlGS:0000000000000000 -[ 310.792197] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 -[ 310.792203] CR2: 000055ed8cffbaf8 CR3: 00000001025c0001 CR4: 0000000000170ee0 -[ 310.792216] Call Trace: -[ 310.792247] <IRQ> -[ 310.792284] irq_exit_rcu+0x9c/0xc0 -[ 310.792305] common_interrupt+0x5d/0xa0 -[ 310.792331] </IRQ> -[ 310.792335] <TASK> -[ 310.792339] asm_common_interrupt+0x1e/0x40 -[ 310.792358] RIP: 0010:native_safe_halt+0xb/0x10 -[ 310.792368] Code: f0 80 48 02 20 48 8b 00 a8 08 74 82 eb c1 cc eb 07 0f 00 2d 89 f3 5f 00 f4 c3 0f 1f 44 00 00 eb 07 0f 00 2d 79 f3 5f 00 fb f4 <c3> cc cc cc cc 0f 1f 44 00 00 65 8b 15 14 ee 60 69 0f 1f 44 00 00 -[ 310.792375] RSP: 0018:ffffb9a8c0093ec8 EFLAGS: 00000212 -[ 310.792382] RAX: ffffffff96a0ca50 RBX: 0000000000000001 RCX: ffff9835c49c3700 -[ 310.792387] RDX: 00000000001df31e RSI: 0000000000000000 RDI: ffff9835c02a8000 -[ 310.792392] RBP: ffffffff97d47120 R08: 00000000001df31e R09: 0000000000029800 -[ 310.792397] R10: ffffb9a8c164bbe0 R11: 0000000000000198 R12: 0000000000000000 -[ 310.792402] R13: 0000000000000000 R14: ffffffffffffffff R15: ffff9835c02a8000 -[ 310.792409] ? __sched_text_end+0x5/0x5 -[ 310.792425] default_idle+0xa/0x10 -[ 310.792434] default_idle_call+0x2d/0xe0 -[ 310.792441] do_idle+0x1ec/0x2d0 -[ 310.792452] cpu_startup_entry+0x19/0x20 -[ 310.792460] start_secondary+0x11c/0x160 -[ 310.792475] secondary_startup_64_no_verify+0xc2/0xcb -[ 310.792501] </TASK> -``` - -``` -[ 435.511342] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 30s! -[ 435.511374] Showing busy workqueues and worker pools: -[ 435.511377] workqueue events: flags=0x0 -[ 435.511380] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 -[ 435.511385] pending: vmstat_shepherd -[ 435.511395] workqueue events_power_efficient: flags=0x80 -[ 435.511398] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 -[ 435.511402] pending: neigh_periodic_work, neigh_periodic_work -[ 435.511411] workqueue events_freezable_power_: flags=0x84 -[ 435.511414] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 -[ 435.511417] in-flight: 4783:disk_events_workfn -[ 435.511425] workqueue mm_percpu_wq: flags=0x8 -[ 435.511428] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 -[ 435.511431] pending: vmstat_update -[ 435.511440] workqueue writeback: flags=0x4a -[ 435.511443] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 -[ 435.511447] pending: wb_workfn -[ 435.511453] workqueue kblockd: flags=0x18 -[ 435.511455] pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=3/256 refcnt=4 -[ 435.511459] pending: blk_mq_timeout_work, blk_mq_timeout_work, blk_mq_timeout_work -[ 435.511475] workqueue ata_sff: flags=0x8 -[ 435.511479] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/512 refcnt=2 -[ 435.511482] pending: ata_sff_pio_task [libata] -[ 435.511538] pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=30s workers=3 idle: 349 51 -``` - -</details> - -It looks like the problem mostly appears if SSH is being used over a "user" network connection. A typical situation is when editing a file in Vim (compiled with X support) via SSH and using the X clipboard (`"+y"`). But the problem also happens in other situations with SSH, e. g. when using SSHFS. -The type of NIC doesn't seem to make a difference (tested `virtio` and `e1000`). But "tap" network connections don't show a problem. - - |