=====================================================
BUG: KMSAN: uninit-value in psi_show+0x701/0x810 kernel/sched/psi.c:1082
 psi_show+0x701/0x810 kernel/sched/psi.c:1082
 cgroup_cpu_pressure_show+0x2b9/0x300 kernel/cgroup/cgroup.c:3676
 cgroup_seqfile_show+0x1fe/0x470 kernel/cgroup/cgroup.c:3991
 kernfs_seq_show+0x13b/0x1f0 fs/kernfs/file.c:217
 seq_read_iter+0x926/0x20c0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x1f2/0xa10 fs/kernfs/file.c:299
 do_iter_read+0x642/0x1300 fs/read_write.c:790
 vfs_readv fs/read_write.c:910 [inline]
 do_preadv+0x302/0x570 fs/read_write.c:1002
 __do_sys_preadv fs/read_write.c:1052 [inline]
 __se_sys_preadv fs/read_write.c:1047 [inline]
 __x64_sys_preadv+0xbc/0x110 fs/read_write.c:1047
 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

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:732 [inline]
 slab_alloc_node mm/slub.c:3258 [inline]
 slab_alloc mm/slub.c:3266 [inline]
 kmem_cache_alloc_trace+0x696/0xdf0 mm/slub.c:3297
 kmalloc include/linux/slab.h:600 [inline]
 psi_cgroup_alloc+0x83/0x250 kernel/sched/psi.c:960
 cgroup_create kernel/cgroup/cgroup.c:5430 [inline]
 cgroup_mkdir+0x10a3/0x3080 kernel/cgroup/cgroup.c:5550
 kernfs_iop_mkdir+0x2ba/0x520 fs/kernfs/dir.c:1185
 vfs_mkdir+0x62a/0x870 fs/namei.c:4013
 do_mkdirat+0x466/0x7b0 fs/namei.c:4038
 __do_sys_mkdirat fs/namei.c:4053 [inline]
 __se_sys_mkdirat fs/namei.c:4051 [inline]
 __x64_sys_mkdirat+0xc4/0x120 fs/namei.c:4051
 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

CPU: 1 PID: 11282 Comm: syz-executor.3 Not tainted 6.0.0-rc2-syzkaller-47460-g3a2b6b904ea7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
=====================================================