UBSAN warning

[EvgeniiMekhanik]

[ 3460.669245] UBSAN: invalid-load in ./include/net/mptcp.h:67:19
[ 3460.670334] load of value 100 is not a valid value for type '_Bool'
[ 3460.674435] UBSAN: invalid-load in ./include/net/mptcp.h:67:19
[ 3460.675420] load of value 100 is not a valid value for type '_Bool'
[ 3466.783075] BUG: unable to handle page fault for address: ffffffffffffffae
[ 3466.784469] #PF: supervisor read access in kernel mode
[ 3466.785371] #PF: error_code(0x0000) - not-present page
[ 3466.786324] PGD 236415067 P4D 236415067 PUD 236417067 PMD 0 
[ 3466.787279] Oops: 0000 [#1] SMP PTI
[ 3466.787941] CPU: 22 PID: 0 Comm: swapper/22 Tainted: G        W  OE     5.10.35+ #4
[ 3466.793957] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014
[ 3466.795349] RIP: 0010:__inet_lookup_established+0x5f/0x140
[ 3466.800903] Code: 45 89 cc 49 09 c2 48 83 ec 10 4d 89 d5 e8 a9 fe ff ff 41 89 c0 89 c1 48 8b 03 44 23 43 10 4e 8d 34 c0 49 8b 1e f6 c3 01 75 7c <39> 4b a0 75 6f 44 39 63 a4 75 69 4c 39 6b 98 75 63 8b 43 ac 3b 45
[ 3466.803944] RSP: 0018:ffffa703005c4d30 EFLAGS: 00010246
[ 3466.804857] RAX: ffff9a6422500000 RBX: 000000000000000e RCX: 00000000c6159f4c
[ 3466.806064] RDX: 0000000000000000 RSI: 00000000d69b5c97 RDI: ffffffffb90172c0
[ 3466.807228] RBP: ffffa703005c4d68 R08: 0000000000019f4c R09: 0000000001bb442f
[ 3466.807804] [tempesta fw] 79.117.245.240 "player-metrics.kinescope.io.vhost_main" "POST /v1/batch/gzip?referrer=https%3A%2F%2Fsportcast.online%2F HTTP/2.0" 200 0 "https://embed.new.video/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36"
[ 3466.808442] R10: 647aa8c0b552ad1f R11: 0000000000000001 R12: 0000000001bb442f
[ 3466.808444] R13: 647aa8c0b552ad1f R14: ffff9a64225cfa60 R15: ffffffffb90172c0
[ 3466.815261] FS:  0000000000000000(0000) GS:ffff9a676fb80000(0000) knlGS:0000000000000000**
[ 3466.816665] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3466.816669] CR2: ffffffffffffffae CR3: 00000001b2126006 CR4: 0000000000770ee0
[ 3466.826238] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3466.826240] PKRU: 55555554
[ 3466.826240] Call Trace:
[ 3466.826244]  <IRQ>
[ 3466.836467]  tcp_v4_early_demux+0xb1/0x160
[ 3466.871617]  ip_rcv_finish+0x6d/0xa0
[ 3466.881947]  ip_rcv+0xce/0xe0
[ 3466.892628]  ? ip_rcv_finish_core.constprop.0+0x470/0x470
[ 3466.911838]  __netif_receive_skb_one_core+0x86/0xa0
[ 3466.922450]  __netif_receive_skb+0x18/0x60
[ 3466.939880]  process_backlog+0x9e/0x170
[ 3466.958326]  net_rx_action+0x13b/0x430
[ 3466.969528]  __do_softirq+0xe3/0x340
[ 3466.986780]  asm_call_irq_on_stack+0x12/0x20
[ 3467.004516]  </IRQ>
[ 3467.004523]  do_softirq_own_stack+0x3d/0x50
[ 3467.015592]  irq_exit_rcu+0xa2/0xe0
[ 3467.035076]  sysvec_call_function_single+0x3d/0x90
[ 3467.052653]  asm_sysvec_call_function_single+0x12/0x20
[ 3467.063899] RIP: 0010:native_safe_halt+0xe/0x10
[ 3467.082082] Code: 39 ff ff ff 4c 89 ee 48 c7 c7 a0 ba c5 b8 e8 89 64 91 ff e9 01 ff ff ff cc cc cc cc e9 07 00 00 00 0f 00 2d 96 55 47 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 86 55 47 00 f4 c3 cc cc 0f 1f 44 00
[ 3467.100749] RSP: 0018:ffffa70300133e88 EFLAGS: 00000206
[ 3467.126130] RAX: ffffffffb7d96750 RBX: 0000000000000016 RCX: ffff9a676fbacdc0
[ 3467.144698] RDX: 00000000005c0242 RSI: 0000000000000082 RDI: 0000000000000082
[ 3467.158606] RBP: ffffa70300133e90 R08: 000000cd42e4dffb R09: 0000000000000400
[ 3467.158607] R10: 00000327274ade1e R11: 0000000000000000 R12: ffff9a64203c1ec0
[ 3467.158608] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 3467.158615]  ? __sched_text_end+0x4/0x4
[ 3467.171811]  ? default_idle+0xe/0x20
[ 3467.192356]  arch_cpu_idle+0x15/0x20
[ 3467.192361]  default_idle_call+0x3d/0xc0
[ 3467.210116]  do_idle+0x215/0x2a0
[ 3467.221076]  cpu_startup_entry+0x20/0x30
[ 3467.238372]  start_secondary+0x145/0x1b0
[ 3467.238378]  secondary_startup_64_no_verify+0xc2/0xcb
[ 3468.071758] CR2: ffffffffffffffae
[ 3468.083852] ---[ end trace d76fd58eef6f92eb ]---
[ 3468.101153] RIP: 0010:__inet_lookup_established+0x5f/0x140
[ 3468.118532] Code: 45 89 cc 49 09 c2 48 83 ec 10 4d 89 d5 e8 a9 fe ff ff 41 89 c0 89 c1 48 8b 03 44 23 43 10 4e 8d 34 c0 49 8b 1e f6 c3 01 75 7c <39> 4b a0 75 6f 44 39 63 a4 75 69 4c 39 6b 98 75 63 8b 43 ac 3b 45
[ 3468.173801] RAX: ffff9a6422500000 RBX: 000000000000000e RCX: 00000000c6159f4c
[ 3468.173802] RDX: 0000000000000000 RSI: 00000000d69b5c97 RDI: ffffffffb90172c0
[ 3468.173803] RBP: ffffa703005c4d68 R08: 0000000000019f4c R09: 0000000001bb442f
[ 3468.173803] R10: 647aa8c0b552ad1f R11: 0000000000000001 R12: 0000000001bb442f
[ 3468.173804] R13: 647aa8c0b552ad1f R14: ffff9a64225cfa60 R15: ffffffffb90172c0
[ 3468.173805] FS:  0000000000000000(0000) GS:ffff9a676fb80000(0000) knlGS:0000000000000000
[ 3468.173807] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033

[EvgeniiMekhanik]

The problem was in memory corruption in hpack, which corrupt memory in random place.