Re: [syzbot] [perf?] WARNING: suspicious RCU usage in get_callchain_entry

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+72a43cdb78469f7fbad1@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+72a43cdb78469f7fbad1@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         1f97d9dc Merge tag 'vfio-v6.19-rc8' of https://github...
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=170ba6ef980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=151a39927f1e10b4
dashboard link: https://syzkaller.appspot.com/bug?extid=72a43cdb78469f7fbad1
compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch:          https://syzkaller.appspot.com/x/patch.diff?x=13b7718a580000

Note: testing is done by a robot and is best-effort only.