WARNING: CPU: 1 PID: 19 at net/ipv4/tcp_input.c:2965 tcp_fastretrans_alert+0x8b5/0x6520
Modules linked in:
CPU: 1 PID: 19 Comm: ksoftirqd/1 Tainted: G        W         5.19.0-syzkaller-32655-g1b070a5d1a2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
=====================================================
BUG: KMSAN: uninit-value in show_regs+0xb9/0xd0 arch/x86/kernel/dumpstack.c:469
 show_regs+0xb9/0xd0 arch/x86/kernel/dumpstack.c:469
 __warn+0x242/0x580 kernel/panic.c:620
 report_bug+0x7ff/0xa10 lib/bug.c:198
 handle_bug+0x41/0x70 arch/x86/kernel/traps.c:316
 exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:336
 asm_exc_invalid_op+0x1b/0x20
 tcp_fastretrans_alert+0x8b5/0x6520
 tcp_ack+0x6f64/0x8d70 net/ipv4/tcp_input.c:3887
 tcp_rcv_established+0xec5/0x25f0 net/ipv4/tcp_input.c:5984
 tcp_v4_do_rcv+0x774/0xf30 net/ipv4/tcp_ipv4.c:1659
 tcp_v4_rcv+0x42d4/0x4750 net/ipv4/tcp_ipv4.c:2076
 ip_protocol_deliver_rcu+0x201/0xaf0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2a5/0x3a0 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x278/0x4a0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:444 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0x527/0x7c0 net/ipv4/ip_input.c:564
 __netif_receive_skb_one_core net/core/dev.c:5484 [inline]
 __netif_receive_skb+0x1b3/0x5d0 net/core/dev.c:5598
 process_backlog+0x45a/0x890 net/core/dev.c:5926
 __napi_poll+0xe6/0x920 net/core/dev.c:6492
 napi_poll net/core/dev.c:6559 [inline]
 net_rx_action+0x9e8/0x1a20 net/core/dev.c:6670
 __do_softirq+0x1cc/0x7fb kernel/softirq.c:571
 run_ksoftirqd+0x2c/0x50 kernel/softirq.c:934
 smpboot_thread_fn+0x554/0x9f0 kernel/smpboot.c:164
 kthread+0x31b/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

Local variable sock_ops created at:
 bpf_skops_write_hdr_opt+0x89/0x570 net/ipv4/tcp_output.c:539
 __tcp_transmit_skb+0x2b24/0x4860 net/ipv4/tcp_output.c:1369

CPU: 1 PID: 19 Comm: ksoftirqd/1 Tainted: G        W         5.19.0-syzkaller-32655-g1b070a5d1a2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
=====================================================