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BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline]
BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copy_to_user_iter lib/iov_iter.c:24 [inline]
 iterate_ubuf include/linux/iov_iter.h:29 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185
 copy_to_iter include/linux/uio.h:196 [inline]
 simple_copy_to_iter net/core/datagram.c:532 [inline]
 __skb_datagram_iter+0x185/0x1000 net/core/datagram.c:420
 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:546
 skb_copy_datagram_msg include/linux/skbuff.h:4055 [inline]
 netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1962
 sock_recvmsg_nosec net/socket.c:1046 [inline]
 sock_recvmsg+0x2c4/0x340 net/socket.c:1068
 ____sys_recvmsg+0x18a/0x620 net/socket.c:2803
 ___sys_recvmsg+0x223/0x840 net/socket.c:2845
 __sys_recvmsg net/socket.c:2875 [inline]
 __do_sys_recvmsg net/socket.c:2885 [inline]
 __se_sys_recvmsg net/socket.c:2882 [inline]
 __x64_sys_recvmsg+0x304/0x4a0 net/socket.c:2882
 do_syscall_64+0xd5/0x1f0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

Uninit was stored to memory at:
 pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253
 netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:1317
 netlink_broadcast_filtered+0x82/0x23b0 net/netlink/af_netlink.c:1523
 nlmsg_multicast_filtered include/net/netlink.h:1111 [inline]
 nlmsg_multicast include/net/netlink.h:1130 [inline]
 nlmsg_notify+0x15f/0x2f0 net/netlink/af_netlink.c:2602
 rtnl_notify+0xc3/0xf0 net/core/rtnetlink.c:757
 wireless_nlevent_flush net/wireless/wext-core.c:353 [inline]
 wireless_nlevent_process+0xfe/0x250 net/wireless/wext-core.c:413
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3335
 worker_thread+0xea5/0x1560 kernel/workqueue.c:3416
 kthread+0x3e2/0x540 kernel/kthread.c:388
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

Uninit was stored to memory at:
 wireless_send_event+0x566/0x1020 net/wireless/wext-core.c:579
 ioctl_standard_iw_point+0x12e5/0x13c0
 compat_standard_call+0x179/0x310 net/wireless/wext-core.c:1107
 wext_ioctl_dispatch+0x234/0xa40 net/wireless/wext-core.c:1013
 compat_wext_handle_ioctl+0x1ae/0x2f0 net/wireless/wext-core.c:1136
 compat_sock_ioctl+0x26b/0x1370 net/socket.c:3525
 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline]
 __se_compat_sys_ioctl+0x791/0x1090 fs/ioctl.c:947
 __ia32_compat_sys_ioctl+0x93/0xe0 fs/ioctl.c:947
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xba/0x120 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:346
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384
 entry_SYSENTER_compat_after_hwframe+0x7a/0x84

Local variable iwp created at:
 compat_standard_call+0x48/0x310 net/wireless/wext-core.c:1094
 wext_ioctl_dispatch+0x234/0xa40 net/wireless/wext-core.c:1013

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff888172e41180
Data copied to user address 00007ffc202b28e8

CPU: 1 PID: 4667 Comm: dhcpcd Not tainted 6.8.0-syzkaller-13236-g5e74df2f8f15 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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