BTRFS info (device loop2): using blake2b (blake2b-256-generic) checksum algorithm
BTRFS info (device loop2): using free space tree
BTRFS info (device loop2): enabling ssd optimizations
BTRFS info (device loop2): auto enabling async discard
=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 _copy_to_user+0xbc/0x100 lib/usercopy.c:40
 copy_to_user include/linux/uaccess.h:191 [inline]
 btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3447
 btrfs_ioctl+0xc58/0x1290
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0x225/0x410 fs/ioctl.c:857
 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
 __kmalloc_large_node+0x231/0x370 mm/slab_common.c:1158
 __do_kmalloc_node mm/slab_common.c:995 [inline]
 __kmalloc_node+0x1d6/0x3c0 mm/slab_common.c:1014
 kmalloc_node include/linux/slab.h:620 [inline]
 kvmalloc_node+0xc0/0x2d0 mm/util.c:617
 kvmalloc include/linux/slab.h:738 [inline]
 init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2776
 btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3428
 btrfs_ioctl+0xc58/0x1290
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0x225/0x410 fs/ioctl.c:857
 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Bytes 40-3145727 of 3145728 are uninitialized
Memory access of size 3145728 starts at ffff888150400000

CPU: 0 PID: 5345 Comm: syz-executor.2 Not tainted 6.7.0-rc7-syzkaller-00016-gf5837722ffec #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
=====================================================