linux-kernel - RE: [PATCH 1/1] lib/list_debug.c: add object information in case of invalid object

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Message-ID: <20250108031723epcms5p6903c4e62f2e8ca63f18724cdfbfa492d@epcms5p6>
Date: Wed, 08 Jan 2025 08:47:23 +0530
From: Maninder Singh <maninder1.s@...sung.com>
To: Christian Brauner <brauner@...nel.org>
CC: "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>, "elver@...gle.com"
	<elver@...gle.com>, "jack@...e.cz" <jack@...e.cz>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>, Rohit Thapliyal
	<r.thapliyal@...sung.com>
Subject: RE: [PATCH 1/1] lib/list_debug.c: add object information in case of
 invalid object

Hi,


>> 
>> [   14.243055]  slab kmalloc-32 start ffff0000cda19320 data offset 32 pointer offset 8 size 32 allocated at add_to_list+0x28/0xb0
>> [   14.245259]     __kmalloc_cache_noprof+0x1c4/0x358
>> [   14.245572]     add_to_list+0x28/0xb0
>> ...
>> [   14.248632]     do_el0_svc_compat+0x1c/0x34
>> [   14.249018]     el0_svc_compat+0x2c/0x80
>> [   14.249244]  Free path:
>> [   14.249410]     kfree+0x24c/0x2f0
>> [   14.249724]     do_force_corruption+0xbc/0x100
>> ...
>> [   14.252266]     el0_svc_common.constprop.0+0x40/0xe0
>> [   14.252540]     do_el0_svc_compat+0x1c/0x34
>> [   14.252763]     el0_svc_compat+0x2c/0x80
>> [   14.253071] ------------[ cut here ]------------
>> [   14.253303] list_del corruption. next->prev should be ffff0000cda192a8, but was 6b6b6b6b6b6b6b6b. (next=ffff0000cda19348)
>> [   14.254255] WARNING: CPU: 3 PID: 84 at lib/list_debug.c:65 __list_del_entry_valid_or_report+0x158/0x164
>> 
>> moved prototype of mem_dump_obj() to bug.h, as mm.h can not be included
>> in bug.h.
>> 
>> Signed-off-by: Maninder Singh <maninder1.s@...sung.com>
>> ---
>
> Can you please base this on either the latest mainline tag or
> vfs-6.14.misc and resend, please?

It is already applied to latest mainline (linux-next)
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=6fffae498b254b20cbaa9e754d793df9c4effc4d

Thanks,
Maninder Singh