syzbot suspects this issue was fixed by commit:
commit befe6d946551d65cddbd32b9cb0170b0249fd5ed
Author: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
Date: Wed Nov 18 14:34:05 2020 +0000
tracepoint: Do not fail unregistering a probe due to memory failure
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=123358a1d00000
start commit: 70b97111 bpf: Use hlist_add_head_rcu when linking to local..
git tree: bpf-next
kernel config: https://syzkaller.appspot.com/x/.config?x=7e0ca96a9b6ee858
dashboard link: https://syzkaller.appspot.com/bug?extid=845923d2172947529b58
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10193f3b900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=168c729b900000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: tracepoint: Do not fail unregistering a probe due to memory failure
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
