------------[ cut here ]------------ WARNING: CPU: 0 PID: 21900 at kernel/cgroup/cpuset.c:1487 update_cpumasks_hier+0xa09/0x1480 kernel/cgroup/cpuset.c:1487 Modules linked in: CPU: 0 PID: 21900 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00039-g9f7fb8de5d9b #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 95 7a 04 00 48 85 db 0f 84 4c fc ff ff e8 f7 77 04 00 <0f> 0b e9 40 fc ff ff e8 eb 77 04 00 e8 c6 d4 ef ff e8 e1 77 04 00 RSP: 0018:ffffc90002c1fa80 EFLAGS: 00010212 RAX: 0000000000022a84 RBX: 0000000000000002 RCX: ffffc90005ac9000 RDX: 0000000000040000 RSI: ffffffff8173f689 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ffbd957 R10: ffffffff8173f67b R11: 0000000000000001 R12: ffff88801e2de000 R13: dffffc0000000000 R14: ffff88801e2de130 R15: 0000000000000000 FS: 00007fdabf838700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f42a000 CR3: 000000005eef3000 CR4: 0000000000350ef0 Call Trace: 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:3882 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: 0033:0x7fdac0ec3059 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdabf838168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fdac0fd5f60 RCX: 00007fdac0ec3059 RDX: 0000000000000048 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007fdac0f1d08d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcdeff661f R14: 00007fdabf838300 R15: 0000000000022000