------------[ cut here ]------------
WARNING: CPU: 0 PID: 10053 at kernel/cgroup/cpuset.c:1487 update_cpumasks_hier+0xa09/0x1480 kernel/cgroup/cpuset.c:1487
Modules linked in:
CPU: 0 PID: 10053 Comm: syz-executor.2 Not tainted 5.16.0-rc8-next-20220110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:update_cpumasks_hier+0xa09/0x1480 kernel/cgroup/cpuset.c:1487
Code: 00 0f 85 67 09 00 00 49 33 9c 24 30 01 00 00 31 ff 0f b6 db 48 89 de e8 75 7b 04 00 48 85 db 0f 84 4c fc ff ff e8 d7 78 04 00 <0f> 0b e9 40 fc ff ff e8 cb 78 04 00 e8 16 c7 ef ff e8 c1 78 04 00
RSP: 0018:ffffc90005d9fa80 EFLAGS: 00010212
RAX: 000000000001db69 RBX: 0000000000000002 RCX: ffffc90003686000
RDX: 0000000000040000 RSI: ffffffff8173f169 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ffd0957
R10: ffffffff8173f15b R11: 0000000000000001 R12: ffff888146e5c000
R13: dffffc0000000000 R14: ffff888146e5c130 R15: 0000000000000000
FS:  00007fb9982f8700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556e77848 CR3: 000000001ee65000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 update_cpumask kernel/cgroup/cpuset.c:1616 [inline]
 cpuset_write_resmask+0xfb7/0x20f0 kernel/cgroup/cpuset.c:2454
 cgroup_file_write+0x1de/0x760 kernel/cgroup/cgroup.c:3877
 kernfs_fop_write_iter+0x342/0x500 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2074 [inline]
 new_sync_write+0x431/0x660 fs/read_write.c:503
 vfs_write+0x7cd/0xae0 fs/read_write.c:590
 ksys_write+0x12d/0x250 fs/read_write.c:643
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb999982e99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb9982f8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb999a95f60 RCX: 00007fb999982e99
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007fb9999dcff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe7f6d57f R14: 00007fb9982f8300 R15: 0000000000022000
 </TASK>