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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+0xf0e/0x32f0 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+0xf0e/0x32f0 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+0x18f/0x1250 net/core/datagram.c:401
 skb_copy_datagram_iter+0x5b/0x1e0 net/core/datagram.c:538
 skb_copy_datagram_msg include/linux/skbuff.h:4128 [inline]
 netlink_recvmsg+0x4bf/0x1760 net/netlink/af_netlink.c:1940
 sock_recvmsg_nosec net/socket.c:1017 [inline]
 sock_recvmsg+0x2dc/0x390 net/socket.c:1039
 sock_read_iter+0x2c8/0x360 net/socket.c:1109
 new_sync_read fs/read_write.c:489 [inline]
 vfs_read+0x845/0xef0 fs/read_write.c:570
 ksys_read fs/read_write.c:713 [inline]
 __do_sys_read fs/read_write.c:722 [inline]
 __se_sys_read fs/read_write.c:720 [inline]
 __x64_sys_read+0x1fb/0x4d0 fs/read_write.c:720
 x64_sys_call+0x39db/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 pskb_expand_head+0x313/0x1c90 net/core/skbuff.c:2255
 netlink_trim+0x496/0x500 net/netlink/af_netlink.c:1295
 netlink_broadcast_filtered+0x80/0x2370 net/netlink/af_netlink.c:1501
 nlmsg_multicast_filtered include/net/netlink.h:1129 [inline]
 nlmsg_multicast include/net/netlink.h:1148 [inline]
 nlmsg_notify+0x15b/0x2f0 net/netlink/af_netlink.c:2577
 rtnl_notify+0xba/0x100 net/core/rtnetlink.c:958
 wireless_nlevent_flush net/wireless/wext-core.c:354 [inline]
 wireless_nlevent_process+0xfe/0x290 net/wireless/wext-core.c:414
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xb97/0x1d90 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd59/0xf00 kernel/kthread.c:464
 ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was stored to memory at:
 wireless_send_event+0x67f/0x1530 net/wireless/wext-core.c:580
 ioctl_standard_iw_point+0x12b0/0x13f0 net/wireless/wext-core.c:896
 compat_standard_call+0x188/0x4c0 net/wireless/wext-core.c:1108
 wireless_process_ioctl net/wireless/wext-core.c:-1 [inline]
 wext_ioctl_dispatch+0x18f/0x7a0 net/wireless/wext-core.c:1014
 compat_wext_handle_ioctl+0x1a1/0x300 net/wireless/wext-core.c:1137
 compat_sock_ioctl+0x20c/0xff0 net/socket.c:3504
 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:947 [inline]
 __ia32_compat_sys_ioctl+0x7f6/0x1260 fs/ioctl.c:947
 ia32_sys_call+0x2d07/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:55
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable iwp created at:
 compat_standard_call+0x4a/0x4c0 net/wireless/wext-core.c:1095
 wireless_process_ioctl net/wireless/wext-core.c:-1 [inline]
 wext_ioctl_dispatch+0x18f/0x7a0 net/wireless/wext-core.c:1014

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff888043fe9340
Data copied to user address 00007ffc97798ab8

CPU: 1 UID: 101 PID: 5440 Comm: dhcpcd Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
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