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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+0x2f3/0x2b30 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+0x2f3/0x2b30 lib/iov_iter.c:185
 copy_to_iter include/linux/uio.h:211 [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:4115 [inline]
 netlink_recvmsg+0x432/0x1610 net/netlink/af_netlink.c:1948
 sock_recvmsg_nosec net/socket.c:1033 [inline]
 sock_recvmsg+0x2c4/0x340 net/socket.c:1055
 sock_read_iter+0x32d/0x3c0 net/socket.c:1125
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0xcdf/0xf50 fs/read_write.c:565
 ksys_read+0x240/0x4b0 fs/read_write.c:708
 __do_sys_read fs/read_write.c:717 [inline]
 __se_sys_read fs/read_write.c:715 [inline]
 __x64_sys_read+0x93/0xe0 fs/read_write.c:715
 x64_sys_call+0x314c/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:1
 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+0x305/0x1a60 net/core/skbuff.c:2283
 netlink_trim+0x2c2/0x330 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0x82/0x23b0 net/netlink/af_netlink.c:1509
 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:2584
 rtnl_notify+0xc3/0xf0 net/core/rtnetlink.c:943
 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:3229 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 wireless_send_event+0x55e/0x1020 net/wireless/wext-core.c:580
 ioctl_standard_iw_point+0x12e0/0x13b0
 compat_standard_call+0x175/0x310 net/wireless/wext-core.c:1110
 wext_ioctl_dispatch+0x234/0xa30 net/wireless/wext-core.c:1016
 compat_wext_handle_ioctl+0x1ae/0x2f0 net/wireless/wext-core.c:1139
 compat_sock_ioctl+0x265/0x1360 net/socket.c:3521
 __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+0x48/0x310 net/wireless/wext-core.c:1097
 wext_ioctl_dispatch+0x234/0xa30 net/wireless/wext-core.c:1016

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff8881180dea00
Data copied to user address 00007ffdce0b4868

CPU: 1 UID: 101 PID: 5452 Comm: dhcpcd Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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