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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:169 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x420/0x1d00 lib/iov_iter.c:536
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copyout lib/iov_iter.c:169 [inline]
 _copy_to_iter+0x420/0x1d00 lib/iov_iter.c:536
 copy_to_iter include/linux/uio.h:206 [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:3960 [inline]
 netlink_recvmsg+0x4ae/0x15a0 net/netlink/af_netlink.c:1970
 sock_recvmsg_nosec net/socket.c:1019 [inline]
 sock_recvmsg net/socket.c:1040 [inline]
 ____sys_recvmsg+0x283/0x7f0 net/socket.c:2722
 ___sys_recvmsg+0x223/0x840 net/socket.c:2764
 __sys_recvmsg net/socket.c:2794 [inline]
 __do_sys_recvmsg net/socket.c:2804 [inline]
 __se_sys_recvmsg net/socket.c:2801 [inline]
 __x64_sys_recvmsg+0x301/0x490 net/socket.c:2801
 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+0x305/0x1a10 net/core/skbuff.c:2062
 netlink_trim+0x2c0/0x330 net/netlink/af_netlink.c:1321
 netlink_broadcast+0x7b/0x2270 net/netlink/af_netlink.c:1517
 nlmsg_multicast include/net/netlink.h:1083 [inline]
 nlmsg_notify+0x15a/0x2e0 net/netlink/af_netlink.c:2589
 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+0xb0d/0x1410 kernel/workqueue.c:2408
 worker_thread+0x107e/0x1d60 kernel/workqueue.c:2555
 kthread+0x3e8/0x540 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Uninit was stored to memory at:
 wireless_send_event+0x566/0x1010 net/wireless/wext-core.c:579
 ioctl_standard_iw_point+0x1152/0x12c0
 compat_standard_call+0x179/0x310 net/wireless/wext-core.c:1101
 wext_ioctl_dispatch+0x230/0xa30 net/wireless/wext-core.c:1007
 compat_wext_handle_ioctl+0x1ae/0x2f0 net/wireless/wext-core.c:1130
 compat_sock_ioctl+0x21d/0x1360 net/socket.c:3441
 __do_compat_sys_ioctl fs/ioctl.c:968 [inline]
 __se_compat_sys_ioctl+0x78f/0xfd0 fs/ioctl.c:910
 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910
 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:1088
 wext_ioctl_dispatch+0x230/0xa30 net/wireless/wext-core.c:1007

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff88811be8e000
Data copied to user address 00007ffee0b17a98

CPU: 1 PID: 4616 Comm: dhcpcd Not tainted 6.4.0-syzkaller-g257152fe29be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
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