Re: [syzbot] [bpf?] [trace?] KASAN: slab-use-after-free Read in bpf_trace_run3 (2)

[Qing Wang]

On Wed, 04 Mar 2026 at 15:53, syzbot <syzbot+9ea7c90be2b24e189592@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
> 
> Reported-by: syzbot+9ea7c90be2b24e189592@xxxxxxxxxxxxxxxxxxxxxxxxx
> Tested-by: syzbot+9ea7c90be2b24e189592@xxxxxxxxxxxxxxxxxxxxxxxxx
> 
> Tested on:
> 
> commit:         0031c068 Merge tag 'cgroup-for-7.0-rc2-fixes' of git:/..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=12afb006580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=c5c49ee0942d1cdb
> dashboard link: https://syzkaller.appspot.com/bug?extid=9ea7c90be2b24e189592
> 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=1566e552580000
> 
> Note: testing is done by a robot and is best-effort only.

It's same as [0].
 [0] https://syzkaller.appspot.com/bug?extid=b4c5ad098c821bf8d8bc

I sent the fixed patch [1] to [0].
 [1] https://lore.kernel.org/all/20260304070927.178464-1-wangqing7171@xxxxxxxxx/T/

--
Qing