Re: [PATCH] bpf: Plug a potential exclusive map memory leak

[Yonghong Song]

On 11/16/25 6:58 AM, Edward Adam Davis wrote:
> When excl_prog_hash is 0 and excl_prog_hash_size is non-zero, the map also
> needs to be freed. Otherwise, the map memory will not be reclaimed, just
> like the memory leak problem reported by syzbot [1].
>
> syzbot reported:
> BUG: memory leak
>    backtrace (crc 7b9fb9b4):
>      map_create+0x322/0x11e0 kernel/bpf/syscall.c:1512
>      __sys_bpf+0x3556/0x3610 kernel/bpf/syscall.c:6131
>
> Fixes: baefdbdf6812 ("bpf: Implement exclusive map creation")
> Reported-by: syzbot+cf08c551fecea9fd1320@xxxxxxxxxxxxxxxxxxxxxxxxx
> Closes: https://syzkaller.appspot.com/bug?extid=cf08c551fecea9fd1320
> Tested-by: syzbot+cf08c551fecea9fd1320@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Edward Adam Davis <eadavis@xxxxxx>

Acked-by: Yonghong Song <yonghong.song@xxxxxxxxx>