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BUG: KMSAN: kernel-infoleak-after-free in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak-after-free in _inline_copy_to_user include/linux/uaccess.h:196 [inline]
BUG: KMSAN: kernel-infoleak-after-free in _copy_to_user+0xcc/0x120 lib/usercopy.c:26
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 _inline_copy_to_user include/linux/uaccess.h:196 [inline]
 _copy_to_user+0xcc/0x120 lib/usercopy.c:26
 copy_to_user include/linux/uaccess.h:225 [inline]
 do_insn_ioctl+0x59c/0x6d0 drivers/comedi/comedi_fops.c:1678
 comedi_unlocked_ioctl+0xa5e/0x1f60 drivers/comedi/comedi_fops.c:2303
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0x239/0x400 fs/ioctl.c:584
 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:584
 x64_sys_call+0x1cbc/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_free_hook mm/slub.c:2343 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x252/0xec0 mm/slub.c:4879
 free_modprobe_argv+0x66/0x90 kernel/module/kmod.c:68
 call_usermodehelper_freeinfo kernel/umh.c:42 [inline]
 call_usermodehelper_exec+0x164/0x530 kernel/umh.c:462
 call_modprobe kernel/module/kmod.c:102 [inline]
 __request_module+0x6aa/0xa50 kernel/module/kmod.c:172
 dev_load+0x1c2/0x210 net/core/dev_ioctl.c:684
 dev_ioctl+0x6c5/0x1100 net/core/dev_ioctl.c:749
 sock_do_ioctl+0x36a/0x480 net/socket.c:1252
 sock_ioctl+0x70b/0xd60 net/socket.c:1359
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0x239/0x400 fs/ioctl.c:584
 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:584
 x64_sys_call+0x1cbc/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Bytes 4-59 of 60 are uninitialized
Memory access of size 60 starts at ffff888061645600
Data copied to user address 0000200000000080

CPU: 1 UID: 0 PID: 6737 Comm: syz.7.58 Not tainted 6.16.0-syzkaller-12256-g561c80369df0 #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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