------------[ cut here ]------------
WARNING: CPU: 1 PID: 4595 at kernel/freezer.c:199 freezing_slow_path kernel/freezer.c:49 [inline]
WARNING: CPU: 1 PID: 4595 at kernel/freezer.c:199 freezing include/linux/freezer.h:37 [inline]
WARNING: CPU: 1 PID: 4595 at kernel/freezer.c:199 __thaw_task+0x285/0x2e0 kernel/freezer.c:199
Modules linked in:
CPU: 1 PID: 4595 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:__thaw_task+0x285/0x2e0 kernel/freezer.c:199
Code: 0f b6 04 04 84 c0 75 5a 45 8b 7d 00 44 89 fe 81 e6 00 00 20 00 31 ff e8 19 92 11 00 41 81 e7 00 00 20 00 75 18 e8 ab 8e 11 00 <0f> 0b 4c 8b 6c 24 18 e9 89 fe ff ff e8 9a 8e 11 00 eb 88 e8 93 8e
RSP: 0018:ffffc90004137740 EFLAGS: 00010093
RAX: ffffffff8170a545 RBX: 1ffff92000826eec RCX: ffff88802a755a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900041377f0 R08: ffffffff8e210aef R09: 1ffffffff1c4215d
R10: dffffc0000000000 R11: fffffbfff1c4215e R12: 1ffff110054eab45
R13: ffff88802a755a2c R14: ffff88802a755a00 R15: 0000000000000000
FS:  000055557339f500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2228e0cff8 CR3: 000000007a4c1000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 freezer_attach+0x1a4/0x260 kernel/cgroup/legacy_freezer.c:184
 cgroup_migrate_execute+0x7a4/0xf20 kernel/cgroup/cgroup.c:2663
 cgroup_attach_task+0x57a/0x870 kernel/cgroup/cgroup.c:2954
 __cgroup1_procs_write+0x2f2/0x3f0 kernel/cgroup/cgroup-v1.c:522
 cgroup_file_write+0x2c9/0x6a0 kernel/cgroup/cgroup.c:4101
 kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x482/0x9a0 fs/read_write.c:584
 ksys_write+0x14d/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8de095e6ce
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffea0c845e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055557339f500 RCX: 00007f8de095e6ce
RDX: 0000000000000001 RSI: 00007ffea0c84670 RDI: 0000000000000003
RBP: 00007ffea0c84be0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffea0c84670 R14: 00007ffea0c84ba0 R15: 00007ffea0c84be0
 </TASK>