diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2021-11-08 18:33:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-09 10:02:50 -0800 |
| commit | e7d5c4b0eb9be6ea5c2cfb510a9d6f56925118eb (patch) | |
| tree | d4d60c82086040308a02fbdfcc8e4b213e0690a8 | |
| parent | 1b1ad288b8f1b11f83396e537003722897ecc12b (diff) | |
kallsyms: fix address-checks for kernel related range
The is_kernel_inittext/is_kernel_text/is_kernel function should not
include the end address(the labels _einittext, _etext and _end) when check
the address range, the issue exists since Linux v2.6.12.
Link: https://lkml.kernel.org/r/20210930071143.63410-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alexander Potapenko <glider@google.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/kallsyms.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index bac340972670..62ce22b27ea8 100644 --- a/include/linux/kallsyms.h +++ b/include/linux/kallsyms.h @@ -27,21 +27,21 @@ struct module; static inline int is_kernel_inittext(unsigned long addr) { if (addr >= (unsigned long)_sinittext - && addr <= (unsigned long)_einittext) + && addr < (unsigned long)_einittext) return 1; return 0; } static inline int is_kernel_text(unsigned long addr) { - if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext)) + if ((addr >= (unsigned long)_stext && addr < (unsigned long)_etext)) return 1; return in_gate_area_no_mm(addr); } static inline int is_kernel(unsigned long addr) { - if (addr >= (unsigned long)_stext && addr <= (unsigned long)_end) + if (addr >= (unsigned long)_stext && addr < (unsigned long)_end) return 1; return in_gate_area_no_mm(addr); } |