=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:121 [inline]
BUG: KMSAN: kernel-infoleak in copyout lib/iov_iter.c:154 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x6ef/0x25a0 lib/iov_iter.c:668
 instrument_copy_to_user include/linux/instrumented.h:121 [inline]
 copyout lib/iov_iter.c:154 [inline]
 _copy_to_iter+0x6ef/0x25a0 lib/iov_iter.c:668
 copy_to_iter include/linux/uio.h:162 [inline]
 kernfs_file_read_iter fs/kernfs/file.c:223 [inline]
 kernfs_fop_read_iter+0x648/0xaa0 fs/kernfs/file.c:242
 call_read_iter include/linux/fs.h:2068 [inline]
 new_sync_read fs/read_write.c:400 [inline]
 vfs_read+0x1631/0x1980 fs/read_write.c:481
 ksys_read+0x28b/0x510 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:627
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was stored to memory at:
 read_descriptors+0x64d/0x950 drivers/usb/core/sysfs.c:892
 sysfs_kf_bin_read+0x4ce/0x540 fs/sysfs/file.c:97
 kernfs_file_read_iter fs/kernfs/file.c:213 [inline]
 kernfs_fop_read_iter+0x4c7/0xaa0 fs/kernfs/file.c:242
 call_read_iter include/linux/fs.h:2068 [inline]
 new_sync_read fs/read_write.c:400 [inline]
 vfs_read+0x1631/0x1980 fs/read_write.c:481
 ksys_read+0x28b/0x510 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:627
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3247 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 __kmalloc_track_caller+0xc89/0x1340 mm/slub.c:4944
 kvasprintf lib/kasprintf.c:25 [inline]
 kvasprintf_const+0x24a/0x710 lib/kasprintf.c:49
 kobject_set_name_vargs+0x12f/0x3a0 lib/kobject.c:289
 kobject_add_varg lib/kobject.c:384 [inline]
 kobject_init_and_add+0x414/0x7a0 lib/kobject.c:473
 rx_queue_add_kobject net/core/net-sysfs.c:1050 [inline]
 net_rx_queue_update_kobjects+0x332/0x9d0 net/core/net-sysfs.c:1101
 register_queue_kobjects net/core/net-sysfs.c:1761 [inline]
 netdev_register_kobject+0x4ba/0x770 net/core/net-sysfs.c:2012
 register_netdevice+0x26f3/0x2fb0 net/core/dev.c:9667
 register_vlan_dev+0x6f3/0xe90 net/8021q/vlan.c:179
 vlan_newlink+0xaba/0xb90 net/8021q/vlan_netlink.c:188
 __rtnl_newlink net/core/rtnetlink.c:3481 [inline]
 rtnl_newlink+0x2d03/0x4220 net/core/rtnetlink.c:3529
 rtnetlink_rcv_msg+0x148d/0x18d0 net/core/rtnetlink.c:5594
 netlink_rcv_skb+0x40c/0x7e0 net/netlink/af_netlink.c:2494
 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5612
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x1093/0x1360 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0x14d9/0x1720 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 ____sys_sendmsg+0xe11/0x12c0 net/socket.c:2413
 ___sys_sendmsg net/socket.c:2467 [inline]
 __sys_sendmsg+0x704/0x840 net/socket.c:2496
 __do_sys_sendmsg net/socket.c:2505 [inline]
 __se_sys_sendmsg net/socket.c:2503 [inline]
 __x64_sys_sendmsg+0xe2/0x120 net/socket.c:2503
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Bytes 98-99 of 4096 are uninitialized
Memory access of size 4096 starts at ffff88808f783000
Data copied to user address 00007ffc795a0977

CPU: 0 PID: 3562 Comm: udevd Not tainted 5.17.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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