diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2015-02-27 10:39:17 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-18 13:31:31 +0100 |
| commit | e12348dff72867bc10ebccdcd712a3d69a436bd0 (patch) | |
| tree | 26284033d56beb4818216cdc3b12b716cffaa186 /arch/arc/kernel/stacktrace.c | |
| parent | 136ff69491588c69f62d1b1f24060a77a5cd35d4 (diff) | |
| download | lwn-e12348dff72867bc10ebccdcd712a3d69a436bd0.tar.gz lwn-e12348dff72867bc10ebccdcd712a3d69a436bd0.zip | |
ARC: Fix KSTK_ESP()
commit 13648b0118a24f4fc76c34e6c7b6ccf447e46a2a upstream.
/proc/<pid>/maps currently don't annotate stack vma with "[stack]"
This is because KSTK_ESP ie expected to return usermode SP of tsk while
currently it returns the kernel mode SP of a sleeping tsk.
While the fix is trivial, we also need to adjust the ARC kernel stack
unwinder to not use KSTK_SP and friends any more.
Reported-and-suggested-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arc/kernel/stacktrace.c')
| -rw-r--r-- | arch/arc/kernel/stacktrace.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c index 9ce47cfe2303..fb98769b6a98 100644 --- a/arch/arc/kernel/stacktrace.c +++ b/arch/arc/kernel/stacktrace.c @@ -64,9 +64,9 @@ static void seed_unwind_frame_info(struct task_struct *tsk, frame_info->task = tsk; - frame_info->regs.r27 = KSTK_FP(tsk); - frame_info->regs.r28 = KSTK_ESP(tsk); - frame_info->regs.r31 = KSTK_BLINK(tsk); + frame_info->regs.r27 = TSK_K_FP(tsk); + frame_info->regs.r28 = TSK_K_ESP(tsk); + frame_info->regs.r31 = TSK_K_BLINK(tsk); frame_info->regs.r63 = (unsigned int)__switch_to; /* In the prologue of __switch_to, first FP is saved on stack |