Hello,
Here is the 7th version of the series to fix the stacktrace with kretprobe on x86.
The previous version is;
https://lore.kernel.org/bpf/162201612941.278331.5293566981784464165.stgit@devnote2/
This version is adding Tested-by from Andrii and do minor cleanups to solve some
warnings from kernel test bots.
Changes from v6:
For x86 and generic patch:
- Add Andrii's Tested-by. (Andrii, I think you have tested only x86, is it OK?)
[11/13]:
- Remove superfluous #include <linux/kprobes.h>.
[13/13]:
- Add a prototype for arch_kretprobe_fixup_return().
With this series, unwinder can unwind stack correctly from ftrace as below;
# cd /sys/kernel/debug/tracing
# echo > trace
# echo 1 > options/sym-offset
# echo r vfs_read >> kprobe_events
# echo r full_proxy_read >> kprobe_events
# echo traceoff:1 > events/kprobes/r_vfs_read_0/trigger
# echo stacktrace:1 > events/kprobes/r_full_proxy_read_0/trigger
# echo 1 > events/kprobes/enable
# cat /sys/kernel/debug/kprobes/list
ffffffff8133b740 r full_proxy_read+0x0 [FTRACE]
ffffffff812560b0 r vfs_read+0x0 [FTRACE]
# echo 0 > events/kprobes/enable
# cat trace
# tracer: nop
#
# entries-in-buffer/entries-written: 3/3 #P:8
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
<...>-134 [007] ...1 16.185877: r_full_proxy_read_0: (vfs_read+0x98/0x180 <- full_proxy_read)
<...>-134 [007] ...1 16.185901: <stack trace>
=> kretprobe_trace_func+0x209/0x300
=> kretprobe_dispatcher+0x4a/0x70
=> __kretprobe_trampoline_handler+0xd4/0x170
=> trampoline_handler+0x43/0x60
=> kretprobe_trampoline+0x2a/0x50
=> vfs_read+0x98/0x180
=> ksys_read+0x5f/0xe0
=> do_syscall_64+0x37/0x90
=> entry_SYSCALL_64_after_hwframe+0x44/0xae
<...>-134 [007] ...1 16.185902: r_vfs_read_0: (ksys_read+0x5f/0xe0 <- vfs_read)
This shows the double return probes (vfs_read and full_proxy_read) on the stack
correctly unwinded. (vfs_read will return to ksys_read+0x5f and full_proxy_read
will return to vfs_read+0x98)
This actually changes the kretprobe behavisor a bit, now the instraction pointer in
the pt_regs passed to kretprobe user handler is correctly set the real return
address. So user handlers can get it via instruction_pointer() API.
You can also get this series from
git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/kretprobe-stackfix-v7
Thank you,
---
Josh Poimboeuf (1):
x86/kprobes: Add UNWIND_HINT_FUNC on kretprobe_trampoline code
Masami Hiramatsu (12):
ia64: kprobes: Fix to pass correct trampoline address to the handler
kprobes: treewide: Replace arch_deref_entry_point() with dereference_symbol_descriptor()
kprobes: treewide: Remove trampoline_address from kretprobe_trampoline_handler()
kprobes: Add kretprobe_find_ret_addr() for searching return address
ARC: Add instruction_pointer_set() API
ia64: Add instruction_pointer_set() API
arm: kprobes: Make a space for regs->ARM_pc at kretprobe_trampoline
kprobes: Setup instruction pointer in __kretprobe_trampoline_handler
x86/kprobes: Push a fake return address at kretprobe_trampoline
x86/unwind: Recover kretprobe trampoline entry
tracing: Show kretprobe unknown indicator only for kretprobe_trampoline
x86/kprobes: Fixup return address in generic trampoline handler
arch/arc/include/asm/ptrace.h | 5 ++
arch/arc/kernel/kprobes.c | 2 -
arch/arm/probes/kprobes/core.c | 5 +-
arch/arm64/kernel/probes/kprobes.c | 3 -
arch/csky/kernel/probes/kprobes.c | 2 -
arch/ia64/include/asm/ptrace.h | 5 ++
arch/ia64/kernel/kprobes.c | 15 ++---
arch/mips/kernel/kprobes.c | 3 -
arch/parisc/kernel/kprobes.c | 4 +
arch/powerpc/kernel/kprobes.c | 13 ----
arch/riscv/kernel/probes/kprobes.c | 2 -
arch/s390/kernel/kprobes.c | 2 -
arch/sh/kernel/kprobes.c | 2 -
arch/sparc/kernel/kprobes.c | 2 -
arch/x86/include/asm/kprobes.h | 1
arch/x86/include/asm/unwind.h | 23 +++++++
arch/x86/include/asm/unwind_hints.h | 5 ++
arch/x86/kernel/kprobes/core.c | 53 +++++++++++++++--
arch/x86/kernel/unwind_frame.c | 3 -
arch/x86/kernel/unwind_guess.c | 3 -
arch/x86/kernel/unwind_orc.c | 18 +++++-
include/linux/kprobes.h | 44 ++++++++++++--
kernel/kprobes.c | 108 +++++++++++++++++++++++++----------
kernel/trace/trace_output.c | 17 +-----
lib/error-inject.c | 3 +
25 files changed, 238 insertions(+), 105 deletions(-)
--
Masami Hiramatsu (Linaro) <[email protected]>
Commit e792ff804f49 ("ia64: kprobes: Use generic kretprobe trampoline handler")
missed to pass the wrong trampoline address (it passes the descriptor address
instead of function entry address).
This fixes it to pass correct trampoline address to __kretprobe_trampoline_handler().
This also changes to use correct symbol dereference function to get the
function address from the kretprobe_trampoline.
Fixes: e792ff804f49 ("ia64: kprobes: Use generic kretprobe trampoline handler")
Signed-off-by: Masami Hiramatsu <[email protected]>
---
Changes in v5:
- Fix a compile error typo.
---
arch/ia64/kernel/kprobes.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index fc1ff8a4d7de..ca4b4fa45aef 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -398,7 +398,8 @@ static void kretprobe_trampoline(void)
int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
{
- regs->cr_iip = __kretprobe_trampoline_handler(regs, kretprobe_trampoline, NULL);
+ regs->cr_iip = __kretprobe_trampoline_handler(regs,
+ dereference_function_descriptor(kretprobe_trampoline), NULL);
/*
* By returning a non-zero value, we are telling
* kprobe_handler() that we don't want the post_handler
@@ -414,7 +415,7 @@ void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
ri->fp = NULL;
/* Replace the return addr with trampoline addr */
- regs->b0 = ((struct fnptr *)kretprobe_trampoline)->ip;
+ regs->b0 = (unsigned long)dereference_function_descriptor(kretprobe_trampoline);
}
/* Check the instruction in the slot is break */
@@ -918,14 +919,14 @@ static struct kprobe trampoline_p = {
int __init arch_init_kprobes(void)
{
trampoline_p.addr =
- (kprobe_opcode_t *)((struct fnptr *)kretprobe_trampoline)->ip;
+ dereference_function_descriptor(kretprobe_trampoline);
return register_kprobe(&trampoline_p);
}
int __kprobes arch_trampoline_kprobe(struct kprobe *p)
{
if (p->addr ==
- (kprobe_opcode_t *)((struct fnptr *)kretprobe_trampoline)->ip)
+ dereference_function_descriptor(kretprobe_trampoline))
return 1;
return 0;
From: Josh Poimboeuf <[email protected]>
Add UNWIND_HINT_FUNC on kretporbe_trampoline code so that ORC
information is generated on the kretprobe_trampoline correctly.
Note that when the CONFIG_FRAME_POINTER=y, since the
kretprobe_trampoline skips updating frame pointer, the stack frame
of the kretprobe_trampoline seems non-standard. So this marks it
is STACK_FRAME_NON_STANDARD() and undefine UNWIND_HINT_FUNC.
Anyway, with the frame pointer, FP unwinder can unwind the stack
frame correctly without that hint.
Signed-off-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Masami Hiramatsu <[email protected]>
Tested-by: Andrii Nakryik <[email protected]>
---
Changes in v4:
- Apply UNWIND_HINT_FUNC only if CONFIG_FRAME_POINTER=n.
---
arch/x86/include/asm/unwind_hints.h | 5 +++++
arch/x86/kernel/kprobes/core.c | 17 +++++++++++++++--
2 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/unwind_hints.h b/arch/x86/include/asm/unwind_hints.h
index 8e574c0afef8..8b33674288ea 100644
--- a/arch/x86/include/asm/unwind_hints.h
+++ b/arch/x86/include/asm/unwind_hints.h
@@ -52,6 +52,11 @@
UNWIND_HINT sp_reg=ORC_REG_SP sp_offset=8 type=UNWIND_HINT_TYPE_FUNC
.endm
+#else
+
+#define UNWIND_HINT_FUNC \
+ UNWIND_HINT(ORC_REG_SP, 8, UNWIND_HINT_TYPE_FUNC, 0)
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_UNWIND_HINTS_H */
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index d32b09ca3221..9a6763fd066e 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -1019,6 +1019,19 @@ int kprobe_int3_handler(struct pt_regs *regs)
}
NOKPROBE_SYMBOL(kprobe_int3_handler);
+#ifdef CONFIG_FRAME_POINTER
+/*
+ * kretprobe_trampoline skips updating frame pointer. The frame pointer
+ * saved in trampoline_handler points to the real caller function's
+ * frame pointer. Thus the kretprobe_trampoline doesn't seems to have a
+ * standard stack frame with CONFIG_FRAME_POINTER=y.
+ * Let's mark it non-standard function. Anyway, FP unwinder can correctly
+ * unwind without the hint.
+ */
+STACK_FRAME_NON_STANDARD(kretprobe_trampoline);
+#undef UNWIND_HINT_FUNC
+#define UNWIND_HINT_FUNC
+#endif
/*
* When a retprobed function returns, this code saves registers and
* calls trampoline_handler() runs, which calls the kretprobe's handler.
@@ -1031,6 +1044,7 @@ asm(
/* We don't bother saving the ss register */
#ifdef CONFIG_X86_64
" pushq %rsp\n"
+ UNWIND_HINT_FUNC
" pushfq\n"
SAVE_REGS_STRING
" movq %rsp, %rdi\n"
@@ -1041,6 +1055,7 @@ asm(
" popfq\n"
#else
" pushl %esp\n"
+ UNWIND_HINT_FUNC
" pushfl\n"
SAVE_REGS_STRING
" movl %esp, %eax\n"
@@ -1054,8 +1069,6 @@ asm(
".size kretprobe_trampoline, .-kretprobe_trampoline\n"
);
NOKPROBE_SYMBOL(kretprobe_trampoline);
-STACK_FRAME_NON_STANDARD(kretprobe_trampoline);
-
/*
* Called from kretprobe_trampoline
Change kretprobe_trampoline to make a space for regs->ARM_pc so that
kretprobe_trampoline_handler can call instruction_pointer_set()
safely.
Signed-off-by: Masami Hiramatsu <[email protected]>
---
arch/arm/probes/kprobes/core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/probes/kprobes/core.c b/arch/arm/probes/kprobes/core.c
index 1782b41df095..5f3c2b42787f 100644
--- a/arch/arm/probes/kprobes/core.c
+++ b/arch/arm/probes/kprobes/core.c
@@ -397,11 +397,13 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
void __naked __kprobes kretprobe_trampoline(void)
{
__asm__ __volatile__ (
+ "sub sp, sp, #16 \n\t"
"stmdb sp!, {r0 - r11} \n\t"
"mov r0, sp \n\t"
"bl trampoline_handler \n\t"
"mov lr, r0 \n\t"
"ldmia sp!, {r0 - r11} \n\t"
+ "add sp, sp, #16 \n\t"
#ifdef CONFIG_THUMB2_KERNEL
"bx lr \n\t"
#else
On Wed, May 26, 2021 at 11:39 PM Masami Hiramatsu <[email protected]> wrote:
>
> Hello,
>
> Here is the 7th version of the series to fix the stacktrace with kretprobe on x86.
>
> The previous version is;
>
> https://lore.kernel.org/bpf/162201612941.278331.5293566981784464165.stgit@devnote2/
>
> This version is adding Tested-by from Andrii and do minor cleanups to solve some
> warnings from kernel test bots.
>
> Changes from v6:
> For x86 and generic patch:
> - Add Andrii's Tested-by. (Andrii, I think you have tested only x86, is it OK?)
right, only tested x86-64
> [11/13]:
> - Remove superfluous #include <linux/kprobes.h>.
> [13/13]:
> - Add a prototype for arch_kretprobe_fixup_return().
>
>
> With this series, unwinder can unwind stack correctly from ftrace as below;
>
> # cd /sys/kernel/debug/tracing
> # echo > trace
> # echo 1 > options/sym-offset
> # echo r vfs_read >> kprobe_events
> # echo r full_proxy_read >> kprobe_events
> # echo traceoff:1 > events/kprobes/r_vfs_read_0/trigger
> # echo stacktrace:1 > events/kprobes/r_full_proxy_read_0/trigger
> # echo 1 > events/kprobes/enable
> # cat /sys/kernel/debug/kprobes/list
> ffffffff8133b740 r full_proxy_read+0x0 [FTRACE]
> ffffffff812560b0 r vfs_read+0x0 [FTRACE]
> # echo 0 > events/kprobes/enable
> # cat trace
> # tracer: nop
> #
> # entries-in-buffer/entries-written: 3/3 #P:8
> #
> # _-----=> irqs-off
> # / _----=> need-resched
> # | / _---=> hardirq/softirq
> # || / _--=> preempt-depth
> # ||| / delay
> # TASK-PID CPU# |||| TIMESTAMP FUNCTION
> # | | | |||| | |
> <...>-134 [007] ...1 16.185877: r_full_proxy_read_0: (vfs_read+0x98/0x180 <- full_proxy_read)
> <...>-134 [007] ...1 16.185901: <stack trace>
> => kretprobe_trace_func+0x209/0x300
> => kretprobe_dispatcher+0x4a/0x70
> => __kretprobe_trampoline_handler+0xd4/0x170
> => trampoline_handler+0x43/0x60
> => kretprobe_trampoline+0x2a/0x50
> => vfs_read+0x98/0x180
> => ksys_read+0x5f/0xe0
> => do_syscall_64+0x37/0x90
> => entry_SYSCALL_64_after_hwframe+0x44/0xae
> <...>-134 [007] ...1 16.185902: r_vfs_read_0: (ksys_read+0x5f/0xe0 <- vfs_read)
>
> This shows the double return probes (vfs_read and full_proxy_read) on the stack
> correctly unwinded. (vfs_read will return to ksys_read+0x5f and full_proxy_read
> will return to vfs_read+0x98)
>
> This actually changes the kretprobe behavisor a bit, now the instraction pointer in
> the pt_regs passed to kretprobe user handler is correctly set the real return
> address. So user handlers can get it via instruction_pointer() API.
>
> You can also get this series from
> git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/kretprobe-stackfix-v7
>
>
> Thank you,
>
> ---
>
> Josh Poimboeuf (1):
> x86/kprobes: Add UNWIND_HINT_FUNC on kretprobe_trampoline code
>
> Masami Hiramatsu (12):
> ia64: kprobes: Fix to pass correct trampoline address to the handler
> kprobes: treewide: Replace arch_deref_entry_point() with dereference_symbol_descriptor()
> kprobes: treewide: Remove trampoline_address from kretprobe_trampoline_handler()
> kprobes: Add kretprobe_find_ret_addr() for searching return address
> ARC: Add instruction_pointer_set() API
> ia64: Add instruction_pointer_set() API
> arm: kprobes: Make a space for regs->ARM_pc at kretprobe_trampoline
> kprobes: Setup instruction pointer in __kretprobe_trampoline_handler
> x86/kprobes: Push a fake return address at kretprobe_trampoline
> x86/unwind: Recover kretprobe trampoline entry
> tracing: Show kretprobe unknown indicator only for kretprobe_trampoline
> x86/kprobes: Fixup return address in generic trampoline handler
>
>
> arch/arc/include/asm/ptrace.h | 5 ++
> arch/arc/kernel/kprobes.c | 2 -
> arch/arm/probes/kprobes/core.c | 5 +-
> arch/arm64/kernel/probes/kprobes.c | 3 -
> arch/csky/kernel/probes/kprobes.c | 2 -
> arch/ia64/include/asm/ptrace.h | 5 ++
> arch/ia64/kernel/kprobes.c | 15 ++---
> arch/mips/kernel/kprobes.c | 3 -
> arch/parisc/kernel/kprobes.c | 4 +
> arch/powerpc/kernel/kprobes.c | 13 ----
> arch/riscv/kernel/probes/kprobes.c | 2 -
> arch/s390/kernel/kprobes.c | 2 -
> arch/sh/kernel/kprobes.c | 2 -
> arch/sparc/kernel/kprobes.c | 2 -
> arch/x86/include/asm/kprobes.h | 1
> arch/x86/include/asm/unwind.h | 23 +++++++
> arch/x86/include/asm/unwind_hints.h | 5 ++
> arch/x86/kernel/kprobes/core.c | 53 +++++++++++++++--
> arch/x86/kernel/unwind_frame.c | 3 -
> arch/x86/kernel/unwind_guess.c | 3 -
> arch/x86/kernel/unwind_orc.c | 18 +++++-
> include/linux/kprobes.h | 44 ++++++++++++--
> kernel/kprobes.c | 108 +++++++++++++++++++++++++----------
> kernel/trace/trace_output.c | 17 +-----
> lib/error-inject.c | 3 +
> 25 files changed, 238 insertions(+), 105 deletions(-)
>
> --
> Masami Hiramatsu (Linaro) <[email protected]>
Hi Josh,
Would you have any comment on this series?
Thank you,
On Thu, 27 May 2021 15:39:03 +0900
Masami Hiramatsu <[email protected]> wrote:
> Hello,
>
> Here is the 7th version of the series to fix the stacktrace with kretprobe on x86.
>
> The previous version is;
>
> https://lore.kernel.org/bpf/162201612941.278331.5293566981784464165.stgit@devnote2/
>
> This version is adding Tested-by from Andrii and do minor cleanups to solve some
> warnings from kernel test bots.
>
> Changes from v6:
> For x86 and generic patch:
> - Add Andrii's Tested-by. (Andrii, I think you have tested only x86, is it OK?)
> [11/13]:
> - Remove superfluous #include <linux/kprobes.h>.
> [13/13]:
> - Add a prototype for arch_kretprobe_fixup_return().
>
>
> With this series, unwinder can unwind stack correctly from ftrace as below;
>
> # cd /sys/kernel/debug/tracing
> # echo > trace
> # echo 1 > options/sym-offset
> # echo r vfs_read >> kprobe_events
> # echo r full_proxy_read >> kprobe_events
> # echo traceoff:1 > events/kprobes/r_vfs_read_0/trigger
> # echo stacktrace:1 > events/kprobes/r_full_proxy_read_0/trigger
> # echo 1 > events/kprobes/enable
> # cat /sys/kernel/debug/kprobes/list
> ffffffff8133b740 r full_proxy_read+0x0 [FTRACE]
> ffffffff812560b0 r vfs_read+0x0 [FTRACE]
> # echo 0 > events/kprobes/enable
> # cat trace
> # tracer: nop
> #
> # entries-in-buffer/entries-written: 3/3 #P:8
> #
> # _-----=> irqs-off
> # / _----=> need-resched
> # | / _---=> hardirq/softirq
> # || / _--=> preempt-depth
> # ||| / delay
> # TASK-PID CPU# |||| TIMESTAMP FUNCTION
> # | | | |||| | |
> <...>-134 [007] ...1 16.185877: r_full_proxy_read_0: (vfs_read+0x98/0x180 <- full_proxy_read)
> <...>-134 [007] ...1 16.185901: <stack trace>
> => kretprobe_trace_func+0x209/0x300
> => kretprobe_dispatcher+0x4a/0x70
> => __kretprobe_trampoline_handler+0xd4/0x170
> => trampoline_handler+0x43/0x60
> => kretprobe_trampoline+0x2a/0x50
> => vfs_read+0x98/0x180
> => ksys_read+0x5f/0xe0
> => do_syscall_64+0x37/0x90
> => entry_SYSCALL_64_after_hwframe+0x44/0xae
> <...>-134 [007] ...1 16.185902: r_vfs_read_0: (ksys_read+0x5f/0xe0 <- vfs_read)
>
> This shows the double return probes (vfs_read and full_proxy_read) on the stack
> correctly unwinded. (vfs_read will return to ksys_read+0x5f and full_proxy_read
> will return to vfs_read+0x98)
>
> This actually changes the kretprobe behavisor a bit, now the instraction pointer in
> the pt_regs passed to kretprobe user handler is correctly set the real return
> address. So user handlers can get it via instruction_pointer() API.
>
> You can also get this series from
> git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/kretprobe-stackfix-v7
>
>
> Thank you,
>
> ---
>
> Josh Poimboeuf (1):
> x86/kprobes: Add UNWIND_HINT_FUNC on kretprobe_trampoline code
>
> Masami Hiramatsu (12):
> ia64: kprobes: Fix to pass correct trampoline address to the handler
> kprobes: treewide: Replace arch_deref_entry_point() with dereference_symbol_descriptor()
> kprobes: treewide: Remove trampoline_address from kretprobe_trampoline_handler()
> kprobes: Add kretprobe_find_ret_addr() for searching return address
> ARC: Add instruction_pointer_set() API
> ia64: Add instruction_pointer_set() API
> arm: kprobes: Make a space for regs->ARM_pc at kretprobe_trampoline
> kprobes: Setup instruction pointer in __kretprobe_trampoline_handler
> x86/kprobes: Push a fake return address at kretprobe_trampoline
> x86/unwind: Recover kretprobe trampoline entry
> tracing: Show kretprobe unknown indicator only for kretprobe_trampoline
> x86/kprobes: Fixup return address in generic trampoline handler
>
>
> arch/arc/include/asm/ptrace.h | 5 ++
> arch/arc/kernel/kprobes.c | 2 -
> arch/arm/probes/kprobes/core.c | 5 +-
> arch/arm64/kernel/probes/kprobes.c | 3 -
> arch/csky/kernel/probes/kprobes.c | 2 -
> arch/ia64/include/asm/ptrace.h | 5 ++
> arch/ia64/kernel/kprobes.c | 15 ++---
> arch/mips/kernel/kprobes.c | 3 -
> arch/parisc/kernel/kprobes.c | 4 +
> arch/powerpc/kernel/kprobes.c | 13 ----
> arch/riscv/kernel/probes/kprobes.c | 2 -
> arch/s390/kernel/kprobes.c | 2 -
> arch/sh/kernel/kprobes.c | 2 -
> arch/sparc/kernel/kprobes.c | 2 -
> arch/x86/include/asm/kprobes.h | 1
> arch/x86/include/asm/unwind.h | 23 +++++++
> arch/x86/include/asm/unwind_hints.h | 5 ++
> arch/x86/kernel/kprobes/core.c | 53 +++++++++++++++--
> arch/x86/kernel/unwind_frame.c | 3 -
> arch/x86/kernel/unwind_guess.c | 3 -
> arch/x86/kernel/unwind_orc.c | 18 +++++-
> include/linux/kprobes.h | 44 ++++++++++++--
> kernel/kprobes.c | 108 +++++++++++++++++++++++++----------
> kernel/trace/trace_output.c | 17 +-----
> lib/error-inject.c | 3 +
> 25 files changed, 238 insertions(+), 105 deletions(-)
>
> --
> Masami Hiramatsu (Linaro) <[email protected]>
--
Masami Hiramatsu