Backtrace

watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [rtkit-daemon:983]
Modules linked in: snd_seq_dummy snd_hrtimer tun vboxsf(OE) xt_CHECKSUM ipt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp nft_counter bridge stp llc nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_tables_set nft_chain_nat nf_nat nf_conntrack xt_comment nf_defrag_ipv6 nft_compat nf_defrag_ipv4 ip_set nf_tables nfnetlink sunrpc intel_rapl_msr intel_rapl_common snd_intel8x0 intel_powerclamp crct10dif_pclmul crc32_pclmul snd_ac97_codec pktcdvd joydev ac97_bus snd_seq ghash_clmulni_intel snd_seq_device rapl snd_pcm snd_timer snd soundcore pcspkr vboxguest(OE) i2c_piix4 video xfs libcrc32c sr_mod sd_mod t10_pi cdrom sg ata_generic vboxvideo drm_vram_helper drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm_ttm_helper ttm drm ahci libahci ata_piix libata crc32c_intel serio_raw e1000 dm_mirror dm_region_hash dm_log dm_mod fuse
CPU: 0 PID: 983 Comm: rtkit-daemon Kdump: loaded Tainted: G           OEL   --------- -  - 4.18.0-477.21.1.el8_8.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:kmem_cache_alloc_node+0x5/0x2b0
Code: 2f 01 0f 85 0c fe ff ff 49 8b 47 10 4c 89 ff e8 41 82 ad 00 e9 fb fd ff ff e8 57 dc dc ff 0f 1f 80 00 00 00 00 0f 1f 44 00 00 <41> 57 41 56 41 55 41 89 d5 41 54 41 89 f4 55 48 89 fd 53 48 83 ec
RSP: 0018:ffffa9edc1b3bc40 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffff
RDX: 00000000ffffffff RSI: 00000000007000c0 RDI: ffff9d8a00b85e00
RBP: 0000000000000060 R08: 00000000007000c0 R09: 0000000000000000
R10: ffff9d8a084e9f80 R11: ffff9d8a0863f180 R12: ffff9d8a00b85e00
R13: 0000000000000000 R14: 00000000007000c0 R15: 00000000ffffffff
FS:  00007fb039f45700(0000) GS:ffff9d8a1bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ebb9926000 CR3: 0000000104226005 CR4: 00000000000706f0
Call Trace:
 __alloc_skb+0x182/0x1c0
 ? finish_wait+0x80/0x80
 alloc_skb_with_frags+0x50/0x1c0
 ? finish_wait+0x80/0x80
 sock_alloc_send_pskb+0x1e5/0x230
 ? _cond_resched+0x15/0x30
 unix_dgram_sendmsg+0x15d/0x720
 sock_sendmsg+0x50/0x60
 __sys_sendto+0xee/0x160
 ? vfs_readlink+0x111/0x130
 ? lockref_put_or_lock+0x5f/0x80
 ? syscall_trace_enter+0x1ff/0x2d0
 __x64_sys_sendto+0x24/0x30
 do_syscall_64+0x5b/0x1b0
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7fb03c6d8716
Code: 49 89 f4 55 53 89 fb 48 83 ec 10 e8 c4 4a ef ff 45 31 c9 45 31 c0 45 89 f2 89 c5 4c 89 ea 4c 89 e6 89 df b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 ef 48 89 44 24 08 e8 f6 4a ef ff 48 8b
RSP: 002b:00007fb039f44a40 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb03c6d8716
RDX: 0000000000000060 RSI: 00007fb0340022c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 00007fb0340022c0
R13: 0000000000000060 R14: 0000000000004000 R15: 00007fb039f44b90