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kprobes, x86: Use NOKPROBE_SYMBOL() instead of __kprobes annotation

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Use NOKPROBE_SYMBOL macro for protecting functions
from kprobes instead of __kprobes annotation under
arch/x86.

This applies nokprobe_inline annotation for some cases,
because NOKPROBE_SYMBOL() will inhibit inlining by
referring the symbol address.

This just folds a bunch of previous NOKPROBE_SYMBOL()
cleanup patches for x86 to one patch.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/20140417081814.26341.51656.stgit@ltc230.yrl.intra.hitachi.co.jp
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fernando Luis Vázquez Cao <fernando_b1@lab.ntt.co.jp>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Lebon <jlebon@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Masami Hiramatsu
2014-04-17 17:18:14 +09:00
committed by Ingo Molnar
parent 9c54b6164e
commit 9326638cbe
12 changed files with 122 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
arch/x86/kernel/traps.c
View File

@@ -106,7 +106,7 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
preempt_count_dec();
}
static int __kprobes
static nokprobe_inline int
do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
struct pt_regs *regs, long error_code)
{
@@ -136,7 +136,7 @@ do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
return -1;
}
static void __kprobes
static void
do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
long error_code, siginfo_t *info)
{
@@ -173,6 +173,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
else
force_sig(signr, tsk);
}
NOKPROBE_SYMBOL(do_trap);
#define DO_ERROR(trapnr, signr, str, name) \
dotraplinkage void do_##name(struct pt_regs *regs, long error_code) \
@@ -263,7 +264,7 @@ dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code)
}
#endif
dotraplinkage void __kprobes
dotraplinkage void
do_general_protection(struct pt_regs *regs, long error_code)
{
struct task_struct *tsk;
@@ -309,9 +310,10 @@ do_general_protection(struct pt_regs *regs, long error_code)
exit:
exception_exit(prev_state);
}
NOKPROBE_SYMBOL(do_general_protection);
/* May run on IST stack. */
dotraplinkage void __kprobes notrace do_int3(struct pt_regs *regs, long error_code)
dotraplinkage void notrace do_int3(struct pt_regs *regs, long error_code)
{
enum ctx_state prev_state;
@@ -355,6 +357,7 @@ dotraplinkage void __kprobes notrace do_int3(struct pt_regs *regs, long error_co
exit:
exception_exit(prev_state);
}
NOKPROBE_SYMBOL(do_int3);
#ifdef CONFIG_X86_64
/*
@@ -362,7 +365,7 @@ exit:
* for scheduling or signal handling. The actual stack switch is done in
* entry.S
*/
asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
asmlinkage struct pt_regs *sync_regs(struct pt_regs *eregs)
{
struct pt_regs *regs = eregs;
/* Did already sync */
@@ -381,6 +384,7 @@ asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
*regs = *eregs;
return regs;
}
NOKPROBE_SYMBOL(sync_regs);
#endif
/*
@@ -407,7 +411,7 @@ asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
*
* May run on IST stack.
*/
dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code)
dotraplinkage void do_debug(struct pt_regs *regs, long error_code)
{
struct task_struct *tsk = current;
enum ctx_state prev_state;
@@ -491,6 +495,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code)
exit:
exception_exit(prev_state);
}
NOKPROBE_SYMBOL(do_debug);
/*
* Note that we play around with the 'TS' bit in an attempt to get
@@ -662,7 +667,7 @@ void math_state_restore(void)
}
EXPORT_SYMBOL_GPL(math_state_restore);
dotraplinkage void __kprobes
dotraplinkage void
do_device_not_available(struct pt_regs *regs, long error_code)
{
enum ctx_state prev_state;
@@ -688,6 +693,7 @@ do_device_not_available(struct pt_regs *regs, long error_code)
#endif
exception_exit(prev_state);
}
NOKPROBE_SYMBOL(do_device_not_available);
#ifdef CONFIG_X86_32
dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code)