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BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x597/0x2350 drivers/usb/core/urb.c:430
 usb_submit_urb+0x597/0x2350 drivers/usb/core/urb.c:430
 usbtmc_generic_write+0x7b6/0xe80 drivers/usb/class/usbtmc.c:1213
 usbtmc_write+0xdb7/0x1210 drivers/usb/class/usbtmc.c:1622
 vfs_write+0x487/0x1540 fs/read_write.c:681
 ksys_write+0x20f/0x4c0 fs/read_write.c:736
 __do_sys_write fs/read_write.c:748 [inline]
 __se_sys_write fs/read_write.c:745 [inline]
 __x64_sys_write+0x93/0xe0 fs/read_write.c:745
 x64_sys_call+0x306a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:2
 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:4092 [inline]
 slab_alloc_node mm/slub.c:4135 [inline]
 __kmalloc_cache_noprof+0x4f0/0xb00 mm/slub.c:4291
 kmalloc_noprof include/linux/slab.h:878 [inline]
 usbtmc_create_urb drivers/usb/class/usbtmc.c:757 [inline]
 usbtmc_generic_write+0x430/0xe80 drivers/usb/class/usbtmc.c:1176
 usbtmc_write+0xdb7/0x1210 drivers/usb/class/usbtmc.c:1622
 vfs_write+0x487/0x1540 fs/read_write.c:681
 ksys_write+0x20f/0x4c0 fs/read_write.c:736
 __do_sys_write fs/read_write.c:748 [inline]
 __se_sys_write fs/read_write.c:745 [inline]
 __x64_sys_write+0x93/0xe0 fs/read_write.c:745
 x64_sys_call+0x306a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:2
 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

Byte 3 of 4 is uninitialized
Memory access of size 4 starts at ffff8881150f6000

CPU: 1 UID: 0 PID: 5201 Comm: syz-executor176 Not tainted 6.11.0-syzkaller-08481-g88264981f208 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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