Re: [syzbot] [bpf?] KASAN: stack-out-of-bounds Write in __bpf_get_stack

From: syzbot
Date: Mon Nov 10 2025 - 21:28:11 EST


Hello,

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

Reported-by: syzbot+d1b7fa1092def3628bd7@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+d1b7fa1092def3628bd7@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit: f8c67d85 bpf: Use kmalloc_nolock() in range tree
git tree: bpf-next
console output: https://syzkaller.appspot.com/x/log.txt?x=10790658580000
kernel config: https://syzkaller.appspot.com/x/.config?x=e46b8a1c645465a9
dashboard link: https://syzkaller.appspot.com/bug?extid=d1b7fa1092def3628bd7
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=1033fa92580000

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