=====================================================
BUG: KMSAN: uninit-value in irqtime_account_irq+0x387/0x520 kernel/sched/cputime.c:71
 irqtime_account_irq+0x387/0x520 kernel/sched/cputime.c:71
 account_softirq_exit include/linux/vtime.h:147 [inline]
 __do_softirq+0x707/0x7c5 kernel/softirq.c:585
 invoke_softirq+0xa4/0x130 kernel/softirq.c:432
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0x76/0x130 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0xa2/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20
 arch_stack_walk+0x2c9/0x3c0 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:122
 kmsan_save_stack_with_flags mm/kmsan/core.c:80 [inline]
 kmsan_internal_poison_memory+0x45/0xa0 mm/kmsan/core.c:65
 kmsan_slab_free+0xd5/0x140 mm/kmsan/hooks.c:91
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0x27b/0x8e0 mm/slub.c:1766
 slab_free mm/slub.c:3530 [inline]
 kfree+0x2e7/0x9e0 mm/slub.c:4579
 __vunmap+0x1043/0x1090 mm/vmalloc.c:2656
 __vfree mm/vmalloc.c:2696 [inline]
 vfree+0x12b/0x170 mm/vmalloc.c:2727
 xt_compat_flush_offsets+0xfb/0x170 net/netfilter/x_tables.c:691
 compat_get_entries net/ipv6/netfilter/ip6_tables.c:1613 [inline]
 do_ip6t_get_ctl+0x223c/0x23d0 net/ipv6/netfilter/ip6_tables.c:1669
 nf_getsockopt+0x577/0x5d0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x1d71/0x3a70 net/ipv6/ipv6_sockglue.c:1495
 tcp_getsockopt+0x1de/0x220 net/ipv4/tcp.c:4252
 sock_common_getsockopt+0x13a/0x170 net/core/sock.c:3451
 __sys_getsockopt+0x6c3/0xc20 net/socket.c:2220
 __do_compat_sys_socketcall net/compat.c:495 [inline]
 __se_compat_sys_socketcall+0xd8b/0x1670 net/compat.c:424
 __ia32_compat_sys_socketcall+0x91/0xc0 net/compat.c:424
 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
 __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Local variable regs created at:
 __bpf_prog_run32+0x84/0x180 kernel/bpf/core.c:1795
 bpf_dispatcher_nop_func include/linux/bpf.h:727 [inline]
 __bpf_prog_run include/linux/filter.h:626 [inline]
 bpf_prog_run include/linux/filter.h:633 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1937 [inline]
 bpf_trace_run1+0xda/0x310 kernel/trace/bpf_trace.c:1973

CPU: 1 PID: 5351 Comm: syz-executor.4 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================