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BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:121 [inline]
BUG: KMSAN: kernel-infoleak in copyout lib/iov_iter.c:154 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x6ef/0x25a0 lib/iov_iter.c:668
 instrument_copy_to_user include/linux/instrumented.h:121 [inline]
 copyout lib/iov_iter.c:154 [inline]
 _copy_to_iter+0x6ef/0x25a0 lib/iov_iter.c:668
 copy_to_iter include/linux/uio.h:162 [inline]
 simple_copy_to_iter+0xf3/0x140 net/core/datagram.c:519
 __skb_datagram_iter+0x2d5/0x11b0 net/core/datagram.c:425
 skb_copy_datagram_iter+0xdc/0x270 net/core/datagram.c:533
 skb_copy_datagram_msg include/linux/skbuff.h:3696 [inline]
 netlink_recvmsg+0x669/0x1c80 net/netlink/af_netlink.c:1977
 ____sys_recvmsg+0x590/0xb00
 ___sys_recvmsg net/socket.c:2674 [inline]
 __sys_recvmsg+0x59b/0xce0 net/socket.c:2704
 __do_sys_recvmsg net/socket.c:2714 [inline]
 __se_sys_recvmsg net/socket.c:2711 [inline]
 __x64_sys_recvmsg+0xe2/0x120 net/socket.c:2711
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was stored to memory at:
 pskb_expand_head+0x3c9/0x1ca0 net/core/skbuff.c:1708
 netlink_trim+0x3f6/0x450 net/netlink/af_netlink.c:1299
 netlink_broadcast+0x112/0x2340 net/netlink/af_netlink.c:1495
 nlmsg_multicast include/net/netlink.h:1033 [inline]
 nlmsg_notify+0x29e/0x550 net/netlink/af_netlink.c:2537
 rtnl_notify+0x193/0x1b0 net/core/rtnetlink.c:730
 wireless_nlevent_flush net/wireless/wext-core.c:353 [inline]
 wireless_nlevent_process+0x139/0x270 net/wireless/wext-core.c:413
 process_one_work+0xdb6/0x1820 kernel/workqueue.c:2307
 worker_thread+0x10b3/0x21e0 kernel/workqueue.c:2454
 kthread+0x3c7/0x500 kernel/kthread.c:377
 ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
 wireless_send_event+0x8d1/0x1670 net/wireless/wext-core.c:578
 ioctl_standard_iw_point+0x1477/0x1900 net/wireless/wext-core.c:870
 compat_standard_call+0x2b5/0x560 net/wireless/wext-core.c:1082
 wext_ioctl_dispatch+0x344/0x950 net/wireless/wext-core.c:988
 compat_wext_handle_ioctl+0x282/0x460 net/wireless/wext-core.c:1111
 compat_sock_ioctl+0x3d6/0x1860 net/socket.c:3351
 __do_compat_sys_ioctl fs/ioctl.c:972 [inline]
 __se_compat_sys_ioctl+0x876/0x1150 fs/ioctl.c:914
 __ia32_compat_sys_ioctl+0xd9/0x110 fs/ioctl.c:914
 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 iwp created at:
 compat_standard_call+0xb4/0x560 net/wireless/wext-core.c:1069
 wext_ioctl_dispatch+0x344/0x950 net/wireless/wext-core.c:988

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff88808bad9000
Data copied to user address 00007fff35b90038

CPU: 1 PID: 3047 Comm: dhcpcd Not tainted 5.17.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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