syzbot

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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+0xbc/0x110 lib/usercopy.c:45
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 _copy_to_user+0xbc/0x110 lib/usercopy.c:45
 copy_to_user include/linux/uaccess.h:191 [inline]
 raw_ioctl_ep0_read drivers/usb/gadget/legacy/raw_gadget.c:786 [inline]
 raw_ioctl+0x3d2e/0x5440 drivers/usb/gadget/legacy/raw_gadget.c:1315
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x261/0x450 fs/ioctl.c:893
 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:893
 x64_sys_call+0x1a06/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:17
 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 created at:
 slab_post_alloc_hook mm/slub.c:3985 [inline]
 slab_alloc_node mm/slub.c:4028 [inline]
 __do_kmalloc_node mm/slub.c:4148 [inline]
 __kmalloc_noprof+0x661/0xf30 mm/slub.c:4161
 kmalloc_noprof include/linux/slab.h:685 [inline]
 raw_alloc_io_data drivers/usb/gadget/legacy/raw_gadget.c:675 [inline]
 raw_ioctl_ep0_read drivers/usb/gadget/legacy/raw_gadget.c:778 [inline]
 raw_ioctl+0x3bcb/0x5440 drivers/usb/gadget/legacy/raw_gadget.c:1315
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x261/0x450 fs/ioctl.c:893
 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:893
 x64_sys_call+0x1a06/0x3c10 arch/x86/include/generated/asm/syscalls_64.h:17
 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

Bytes 0-4095 of 4096 are uninitialized
Memory access of size 4096 starts at ffff888116edb000
Data copied to user address 00007ffefdca74d8

CPU: 0 PID: 5057 Comm: syz-executor289 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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