syzbot

=====================================================
BUG: KMSAN: uninit-value in full_proxy_unlocked_ioctl+0xed/0x3a0 fs/debugfs/file.c:399
 full_proxy_unlocked_ioctl+0xed/0x3a0 fs/debugfs/file.c:399
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0x246/0x440 fs/ioctl.c:892
 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:892
 x64_sys_call+0x19f0/0x3c30 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 stored to memory at:
 __debugfs_file_get+0xe59/0xef0 fs/debugfs/file.c:120
 full_proxy_open_regular+0x67/0xa00 fs/debugfs/file.c:447
 do_dentry_open+0x1bdd/0x26b0 fs/open.c:955
 vfs_open+0x53/0x5b0 fs/open.c:1085
 do_open fs/namei.c:3830 [inline]
 path_openat+0x56a1/0x6250 fs/namei.c:3989
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 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 stored to memory at:
 __debugfs_file_get+0xdff/0xef0 fs/debugfs/file.c:118
 full_proxy_open_regular+0x67/0xa00 fs/debugfs/file.c:447
 do_dentry_open+0x1bdd/0x26b0 fs/open.c:955
 vfs_open+0x53/0x5b0 fs/open.c:1085
 do_open fs/namei.c:3830 [inline]
 path_openat+0x56a1/0x6250 fs/namei.c:3989
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 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:4121 [inline]
 slab_alloc_node mm/slub.c:4164 [inline]
 __kmalloc_cache_noprof+0x8e3/0xdf0 mm/slub.c:4320
 kmalloc_noprof include/linux/slab.h:901 [inline]
 __debugfs_file_get+0x31d/0xef0 fs/debugfs/file.c:101
 full_proxy_open_regular+0x67/0xa00 fs/debugfs/file.c:447
 do_dentry_open+0x1bdd/0x26b0 fs/open.c:955
 vfs_open+0x53/0x5b0 fs/open.c:1085
 do_open fs/namei.c:3830 [inline]
 path_openat+0x56a1/0x6250 fs/namei.c:3989
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 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

CPU: 1 UID: 0 PID: 5781 Comm: syz-executor325 Not tainted 6.13.0-syzkaller-09585-gb4b0881156fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
=====================================================