Modules linked in:
CPU: 1 PID: 164 Comm: kworker/u4:4 Not tainted 6.1.0-rc2-syzkaller-61957-g1aa4f78e4630 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: netns cleanup_net
=====================================================
BUG: KMSAN: uninit-value in show_ip arch/x86/kernel/dumpstack.c:142 [inline]
BUG: KMSAN: uninit-value in show_iret_regs+0x1ec/0x230 arch/x86/kernel/dumpstack.c:149
 show_ip arch/x86/kernel/dumpstack.c:142 [inline]
 show_iret_regs+0x1ec/0x230 arch/x86/kernel/dumpstack.c:149
 __show_regs+0x31/0xc90 arch/x86/kernel/process_64.c:74
 show_regs+0x6e/0xd0 arch/x86/kernel/dumpstack.c:469
 __warn+0x242/0x580 kernel/panic.c:618
 report_bug+0x7ff/0xa10 lib/bug.c:198
 handle_bug+0x41/0x70 arch/x86/kernel/traps.c:317
 exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:338
 asm_exc_invalid_op+0x1b/0x20 arch/x86/include/asm/idtentry.h:568
 grace_exit_net+0x1be/0x1d0 fs/nfs_common/grace.c:116
 ops_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0xd0f/0x18c0 net/core/net_namespace.c:594
 process_one_work+0xb27/0x13e0 kernel/workqueue.c:2289
 worker_thread+0x1076/0x1d60 kernel/workqueue.c:2436
 kthread+0x31b/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Local variable buf created at:
 xt_proto_fini+0x4c/0x230 net/netfilter/x_tables.c:1882
 ip_tables_net_exit+0x1f/0x30 net/ipv4/netfilter/ip_tables.c:1894

CPU: 1 PID: 164 Comm: kworker/u4:4 Not tainted 6.1.0-rc2-syzkaller-61957-g1aa4f78e4630 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: netns cleanup_net
=====================================================