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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:30 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:328 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x305/0x2e60 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:30 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
 iterate_and_advance include/linux/iov_iter.h:328 [inline]
 _copy_to_iter+0x305/0x2e60 lib/iov_iter.c:185
 copy_to_iter include/linux/uio.h:220 [inline]
 simple_copy_to_iter net/core/datagram.c:524 [inline]
 __skb_datagram_iter+0x18d/0x1190 net/core/datagram.c:401
 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:538
 skb_copy_datagram_msg include/linux/skbuff.h:4144 [inline]
 netlink_recvmsg+0x42b/0x1580 net/netlink/af_netlink.c:1949
 sock_recvmsg_nosec net/socket.c:1023 [inline]
 sock_recvmsg+0x2c4/0x340 net/socket.c:1045
 ____sys_recvmsg+0x18a/0x620 net/socket.c:2793
 ___sys_recvmsg+0x223/0x840 net/socket.c:2835
 __sys_recvmsg net/socket.c:2868 [inline]
 __do_sys_recvmsg net/socket.c:2874 [inline]
 __se_sys_recvmsg net/socket.c:2871 [inline]
 __x64_sys_recvmsg+0x20f/0x3b0 net/socket.c:2871
 x64_sys_call+0xe16/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:48
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 pskb_expand_head+0x33a/0x1b70 net/core/skbuff.c:2283
 netlink_trim+0x451/0x4c0 net/netlink/af_netlink.c:1304
 netlink_broadcast_filtered+0x82/0x23b0 net/netlink/af_netlink.c:1510
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x15f/0x2f0 net/netlink/af_netlink.c:2586
 rtnl_notify+0xc3/0xf0 net/core/rtnetlink.c:952
 wireless_nlevent_flush net/wireless/wext-core.c:354 [inline]
 wireless_nlevent_process+0xfe/0x250 net/wireless/wext-core.c:414
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xc1a/0x1e80 kernel/workqueue.c:3317
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3398
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 wireless_send_event+0x6aa/0x1490 net/wireless/wext-core.c:580
 ioctl_standard_iw_point+0x12e0/0x13b0
 compat_standard_call+0x17f/0x480 net/wireless/wext-core.c:1108
 wext_ioctl_dispatch+0x18d/0x770 net/wireless/wext-core.c:1014
 compat_wext_handle_ioctl+0x1a7/0x2f0 net/wireless/wext-core.c:1137
 compat_sock_ioctl+0x265/0x1360 net/socket.c:3511
 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline]
 __se_compat_sys_ioctl+0x80f/0x1020 fs/ioctl.c:947
 __ia32_compat_sys_ioctl+0x93/0xe0 fs/ioctl.c:947
 ia32_sys_call+0x2226/0x4180 arch/x86/include/generated/asm/syscalls_32.h:55
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable iwp created at:
 compat_standard_call+0x49/0x480 net/wireless/wext-core.c:1095
 wext_ioctl_dispatch+0x18d/0x770 net/wireless/wext-core.c:1014

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff8881178ae000
Data copied to user address 00007fffe7189b78

CPU: 0 UID: 101 PID: 5441 Comm: dhcpcd Not tainted 6.14.0-rc3-syzkaller-00012-g2408a807bfc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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