diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2018-12-17 11:20:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 11:20:26 +0300 |
| commit | 98cf16d33c0796b1cfce7960c43862273e4c5c10 (patch) | |
| tree | 8d62389da51f1d81d5ec637752dfd2094af737a1 /include | |
| parent | 73c1ca2dda37a65d4ef218551a39794658a0ef2c (diff) | |
| download | linux-98cf16d33c0796b1cfce7960c43862273e4c5c10.tar.xz | |
kprobes: Blacklist symbols in arch-defined prohibited area
[ Upstream commit fb1a59fae8baa3f3c69b72a87ff94fc4fa5683ec ]
Blacklist symbols in arch-defined probe-prohibited areas.
With this change, user can see all symbols which are prohibited
to probe in debugfs.
All archtectures which have custom prohibit areas should define
its own arch_populate_kprobe_blacklist() function, but unless that,
all symbols marked __kprobes are blacklisted.
Reported-by: Andrea Righi <righi.andrea@gmail.com>
Tested-by: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lkml.kernel.org/r/154503485491.26176.15823229545155174796.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kprobes.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 32cae0f35b9d..9adb92ad24d3 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -243,10 +243,13 @@ extern int arch_init_kprobes(void); extern void show_registers(struct pt_regs *regs); extern void kprobes_inc_nmissed_count(struct kprobe *p); extern bool arch_within_kprobe_blacklist(unsigned long addr); +extern int arch_populate_kprobe_blacklist(void); extern bool arch_kprobe_on_func_entry(unsigned long offset); extern bool kprobe_on_func_entry(kprobe_opcode_t *addr, const char *sym, unsigned long offset); extern bool within_kprobe_blacklist(unsigned long addr); +extern int kprobe_add_ksym_blacklist(unsigned long entry); +extern int kprobe_add_area_blacklist(unsigned long start, unsigned long end); struct kprobe_insn_cache { struct mutex mutex; |