linux-kernel - Re: [PATCH v3 5/6] maple_tree: add sufficient height

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <your-ad-here.call-01741708388-ext-3173@work.hours>
Date: Tue, 11 Mar 2025 16:53:08 +0100
From: Vasily Gorbik <gor@...ux.ibm.com>
To: Sidhartha Kumar <sidhartha.kumar@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org,
        maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        liam.howlett@...cle.com, richard.weiyang@...il.com
Subject: Re: [PATCH v3 5/6] maple_tree: add sufficient height

On Tue, Mar 11, 2025 at 10:40:17AM -0400, Sidhartha Kumar wrote:
> Would you be able to rerun this test with the following diff applied and
> CONFIG_DEBUG_MAPLE_TREE=y so I can check the state of the tree to easier
> reproduce the error?
> 
> diff --git a/lib/maple_tree.c b/lib/maple_tree.c
> index ea1f0acac118..74a4b1924a55 100644
> --- a/lib/maple_tree.c
> +++ b/lib/maple_tree.c
> @@ -1153,8 +1153,11 @@ static inline struct maple_node *mas_pop_node(struct
> ma_state *mas)
>         unsigned int req = mas_alloc_req(mas);
> 
>         /* nothing or a request pending. */
> -       if (WARN_ON(!total))
> +       if (WARN_ON(!total)) {
> +               mas_dump(mas);
> +               mt_dump(mas->tree, mt_dump_hex);
>                 return NULL;
> +       }

Sure, please find vmcore-dmesg.txt.xz attached

Download attachment "vmcore-dmesg.txt.xz" of type "application/x-xz" (508568 bytes)