netlink: 12 bytes leftover after parsing attributes in process `syz.9.2367'.
=====================================================
BUG: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:464
 irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:464
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x82/0xa00 kernel/entry/common.c:164
 sysvec_reschedule_ipi+0x74/0x80 arch/x86/kernel/smp.c:249
 asm_sysvec_reschedule_ipi+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
 __msan_metadata_ptr_for_load_4+0x31/0x40 mm/kmsan/instrumentation.c:93
 key_notify_policy net/key/af_key.c:-1 [inline]
 pfkey_send_policy_notify+0xbcc/0x12b0 net/key/af_key.c:3128
 km_policy_notify+0xc9/0x1a0 net/xfrm/xfrm_state.c:2743
 xfrm_add_policy+0x6c7/0xd30 net/xfrm/xfrm_user.c:2279
 xfrm_user_rcv_msg+0x106f/0x1290 net/xfrm/xfrm_user.c:3525
 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2555
 xfrm_netlink_rcv+0x77/0xc0 net/xfrm/xfrm_user.c:3547
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0xee2/0x1290 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x10b2/0x1250 net/netlink/af_netlink.c:1899
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg net/socket.c:802 [inline]
 ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2698
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2752
 __sys_sendmsg+0x1aa/0x300 net/socket.c:2784
 __compat_sys_sendmsg net/compat.c:346 [inline]
 __do_compat_sys_sendmsg net/compat.c:353 [inline]
 __se_compat_sys_sendmsg net/compat.c:350 [inline]
 __ia32_compat_sys_sendmsg+0xa4/0x100 net/compat.c:350
 ia32_sys_call+0x1e4a/0x4360 arch/x86/include/generated/asm/syscalls_32.h:371
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x195/0x470 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable c created at:
 xfrm_add_policy+0x88/0xd30 net/xfrm/xfrm_user.c:2245
 xfrm_user_rcv_msg+0x106f/0x1290 net/xfrm/xfrm_user.c:3525

CPU: 1 UID: 0 PID: 14291 Comm: syz.9.2367 Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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