From: Steven Rostedt <rostedt@goodmis.org>
To: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: linux-arch@vger.kernel.org, ryabinin.a.a@gmail.com,
arnd@arndb.de, linux-kernel@vger.kernel.org, ast@kernel.org,
mingo@redhat.com, paulus@samba.org,
linuxppc-dev@lists.ozlabs.org, davem@davemloft.net
Subject: Re: [PATCH v2 6/7] sections: Add new is_kernel() and is_kernel_text()
Date: Wed, 28 Jul 2021 11:32:04 -0400 [thread overview]
Message-ID: <20210728113204.67fa6dfc@oasis.local.home> (raw)
In-Reply-To: <20210728081320.20394-7-wangkefeng.wang@huawei.com>
On Wed, 28 Jul 2021 16:13:19 +0800
Kefeng Wang <wangkefeng.wang@huawei.com> wrote:
> @@ -64,8 +64,7 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
>
> int notrace core_kernel_text(unsigned long addr)
> {
> - if (addr >= (unsigned long)_stext &&
> - addr < (unsigned long)_etext)
> + if (is_kernel_text(addr))
Perhaps this was a bug, and these functions should be checking the gate
area as well, as that is part of kernel text.
-- Steve
> return 1;
>
> if (system_state < SYSTEM_RUNNING &&
> diff --git a/mm/kasan/report.c b/mm/kasan/report.c
> index 884a950c7026..88f5b0c058b7 100644
> --- a/mm/kasan/report.c
> +++ b/mm/kasan/report.c
> @@ -235,7 +235,7 @@ static void describe_object(struct kmem_cache *cache, void *object,
>
> static inline bool kernel_or_module_addr(const void *addr)
> {
> - if (addr >= (void *)_stext && addr < (void *)_end)
> + if (is_kernel((unsigned long)addr))
> return true;
> if (is_module_address((unsigned long)addr))
> return true;
> --
next prev parent reply other threads:[~2021-07-28 15:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 8:13 [PATCH v2 0/7] sections: Unify kernel sections range check and use Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 1/7] kallsyms: Remove arch specific text and data check Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 2/7] kallsyms: Fix address-checks for kernel related range Kefeng Wang
2021-07-28 14:46 ` Steven Rostedt
2021-07-29 2:03 ` Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 3/7] sections: Move and rename core_kernel_data() to is_kernel_core_data() Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 4/7] sections: Move is_kernel_inittext() into sections.h Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 5/7] kallsyms: Rename is_kernel() and is_kernel_text() Kefeng Wang
2021-07-28 15:28 ` Steven Rostedt
2021-07-29 2:00 ` Kefeng Wang
2021-07-29 4:05 ` Steven Rostedt
2021-07-29 11:06 ` Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 6/7] sections: Add new " Kefeng Wang
2021-07-28 15:32 ` Steven Rostedt [this message]
2021-07-29 2:02 ` Kefeng Wang
2021-07-28 8:13 ` [PATCH v2 7/7] powerpc/mm: Use is_kernel_text() and is_kernel_inittext() helper Kefeng Wang
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