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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+0x23c/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
 tomoyo_check_open_permission+0xa2f/0xc60 security/tomoyo/file.c:786
 tomoyo_file_open+0x29d/0x320 security/tomoyo/tomoyo.c:334
 security_file_open+0x11e/0x500 security/security.c:3144
 do_dentry_open+0x5fd/0x1eb0 fs/open.c:942
 vfs_open+0x52/0x5f0 fs/open.c:1095
 do_open fs/namei.c:3887 [inline]
 path_openat+0x598d/0x6760 fs/namei.c:4046
 do_filp_open+0x280/0x660 fs/namei.c:4073
 do_sys_openat2+0x1bb/0x2f0 fs/open.c:1435
 do_sys_open fs/open.c:1450 [inline]
 __do_sys_openat fs/open.c:1466 [inline]
 __se_sys_openat fs/open.c:1461 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1461
 x64_sys_call+0x3bcc/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:258
 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 ffff888023323380
Data copied to user address 0000200000000080

CPU: 1 UID: 0 PID: 15210 Comm: syz.5.2181 Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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