syzbot

BUG: KMSAN: uninit-value in tomoyo_realpath_from_path+0x4e5/0xaf0 security/tomoyo/realpath.c:286
 tomoyo_realpath_from_path+0x4e5/0xaf0 security/tomoyo/realpath.c:286
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x27d/0xb40 security/tomoyo/file.c:822
 tomoyo_inode_getattr+0x30/0x40 security/tomoyo/tomoyo.c:122
 security_inode_getattr+0x121/0x1f0 security/security.c:1344
 vfs_getattr fs/stat.c:157 [inline]
 vfs_statx+0x19d/0x5d0 fs/stat.c:232
 vfs_fstatat fs/stat.c:255 [inline]
 __do_sys_newfstatat fs/stat.c:425 [inline]
 __se_sys_newfstatat+0xd0/0x940 fs/stat.c:419
 __x64_sys_newfstatat+0xb9/0x110 fs/stat.c:419
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Local variable mmap_event created at:
 perf_event_mmap+0x54/0x29c0 kernel/events/core.c:8537
 mmap_region+0x19fe/0x34d0 mm/mmap.c:1863

CPU: 1 PID: 2840 Comm: xargs Not tainted 5.19.0-rc8-syzkaller-32495-g3ea9edba19ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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