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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

Local variable buf created at:
 tomoyo_path_number_perm+0xff/0x7d0 security/tomoyo/file.c:716
 tomoyo_file_ioctl+0x3d/0x50 security/tomoyo/tomoyo.c:350

Bytes 60-63 of 64 are uninitialized
Memory access of size 64 starts at ffff88813d98f440
Data copied to user address 00007ffe75e41e18

CPU: 0 UID: 101 PID: 5443 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 05/07/2025
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