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BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in copyout lib/iov_iter.c:167 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x37d/0x1cf0 lib/iov_iter.c:316
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copyout lib/iov_iter.c:167 [inline]
 _copy_to_iter+0x37d/0x1cf0 lib/iov_iter.c:316
 copy_to_iter include/linux/uio.h:201 [inline]
 simple_copy_to_iter+0x68/0xa0 net/core/datagram.c:513
 __skb_datagram_iter+0x123/0xdc0 net/core/datagram.c:419
 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:527
 skb_copy_datagram_msg include/linux/skbuff.h:3957 [inline]
 netlink_recvmsg+0x432/0x1600 net/netlink/af_netlink.c:1967
 sock_recvmsg_nosec net/socket.c:1027 [inline]
 sock_recvmsg net/socket.c:1049 [inline]
 ____sys_recvmsg+0x283/0x7f0 net/socket.c:2760
 ___sys_recvmsg+0x223/0x840 net/socket.c:2802
 __sys_recvmsg net/socket.c:2832 [inline]
 __do_sys_recvmsg net/socket.c:2842 [inline]
 __se_sys_recvmsg net/socket.c:2839 [inline]
 __x64_sys_recvmsg+0x304/0x490 net/socket.c:2839
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at:
 pskb_expand_head+0x305/0x1a00 net/core/skbuff.c:2101
 netlink_trim+0x2c0/0x330 net/netlink/af_netlink.c:1324
 netlink_broadcast_filtered+0x82/0x2390 net/netlink/af_netlink.c:1531
 netlink_broadcast net/netlink/af_netlink.c:1576 [inline]
 nlmsg_multicast include/net/netlink.h:1079 [inline]
 nlmsg_notify+0x15f/0x2f0 net/netlink/af_netlink.c:2588
 rtnl_notify+0xc3/0xf0 net/core/rtnetlink.c:771
 wireless_nlevent_flush net/wireless/wext-core.c:353 [inline]
 wireless_nlevent_process+0xfe/0x240 net/wireless/wext-core.c:413
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x104e/0x1e70 kernel/workqueue.c:2703
 worker_thread+0xf45/0x1490 kernel/workqueue.c:2784
 kthread+0x3e8/0x540 kernel/kthread.c:388
 ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

Uninit was stored to memory at:
 wireless_send_event+0x566/0x1010 net/wireless/wext-core.c:579
 ioctl_standard_iw_point+0x12de/0x13b0
 compat_standard_call+0x179/0x310 net/wireless/wext-core.c:1107
 wext_ioctl_dispatch+0x230/0xa30 net/wireless/wext-core.c:1013
 compat_wext_handle_ioctl+0x1ae/0x2f0 net/wireless/wext-core.c:1136
 compat_sock_ioctl+0x220/0x1370 net/socket.c:3482
 __do_compat_sys_ioctl fs/ioctl.c:972 [inline]
 __se_compat_sys_ioctl+0x79b/0xfe0 fs/ioctl.c:914
 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:914
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Local variable iwp created at:
 compat_standard_call+0x48/0x310 net/wireless/wext-core.c:1094
 wext_ioctl_dispatch+0x230/0xa30 net/wireless/wext-core.c:1013

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff8880a638ea00
Data copied to user address 00007fff88b4da98

CPU: 0 PID: 4645 Comm: dhcpcd Not tainted 6.6.0-rc2-syzkaller-00018-g2cf0f7156238 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
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