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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	Mike Rapoport <rppt@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>, Linux-MM <linux-mm@kvack.org>,
	Vlastimil Babka <vbabka@suse.cz>
Subject: Re: [PATCH v2 1/5] bootconfig: Fix to check the xbc_node is used before free it
Date: Tue, 14 Sep 2021 18:12:28 -0700	[thread overview]
Message-ID: <CAHk-=whJAyOZN16BzB-YS8zYVNfSsRcCnMuvzfz6CMfuknwPDw@mail.gmail.com> (raw)
In-Reply-To: <163166718582.510331.11732633028925882626.stgit@devnote2>

On Tue, Sep 14, 2021 at 5:53 PM Masami Hiramatsu <mhiramat@kernel.org> wrote:
>
> Fix to check the xbc_node is used before calling memblock_free()
> because passing NULL to phys_addr() will cause a panic.

No.

That's the previous bad situation.

The whole point of memblock_free_ptr() is that it actually acts the
way a memory freeing function *should*, and has no problems with NULL
pointers.

>    - Rebase on top of Linus tree.

Please don't do a mindless rebase, take the actual changes into account.

         Linus

  reply	other threads:[~2021-09-15  1:12 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-15  0:52 [PATCH v2 0/5] bootconfig: Fixes to bootconfig memory management Masami Hiramatsu
2021-09-15  0:53 ` [PATCH v2 1/5] bootconfig: Fix to check the xbc_node is used before free it Masami Hiramatsu
2021-09-15  1:12   ` Linus Torvalds [this message]
2021-09-15  1:44     ` Masami Hiramatsu
2021-09-15  0:53 ` [PATCH v2 2/5] bootconfig: init: Fix memblock leak in xbc_make_cmdline() Masami Hiramatsu
2021-09-15  0:53 ` [PATCH v2 3/5] bootconfig: init: Fix memblock leak in setup_boot_config() Masami Hiramatsu
2021-09-15  0:53 ` [PATCH v2 4/5] bootconfig: Free copied bootconfig data after boot Masami Hiramatsu
2021-09-15  1:13   ` Linus Torvalds
2021-09-15  1:45     ` Masami Hiramatsu
2021-09-15  0:53 ` [PATCH v2 5/5] tools/bootconfig: Define memblock_free_ptr() to fix build error Masami Hiramatsu
2021-09-15  1:21   ` Linus Torvalds
2021-09-15  1:47     ` Masami Hiramatsu
2021-09-15  1:57       ` Linus Torvalds
2021-09-15  3:00         ` Masami Hiramatsu

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