diff options
| author | Nathan Huckleberry <nhuck@google.com> | 2020-07-10 20:23:37 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2020-07-21 16:33:40 +0100 |
| commit | b4d5ec9b39f8b31d98f65bc5577b5d15d93795d7 (patch) | |
| tree | 9636d4f12db602048a3768d27025c8af64115da0 /arch/arm/include/asm/hardware/memc.h | |
| parent | 2cbd1cc3dcd3e84be1fc1987da24b190ddf24a70 (diff) | |
ARM: 8992/1: Fix unwind_frame for clang-built kernels
Since clang does not push pc and sp in function prologues, the current
implementation of unwind_frame does not work. By using the previous
frame's lr/fp instead of saved pc/sp we get valid unwinds on clang-built
kernels.
The bounds check on next frame pointer must be changed as well since
there are 8 less bytes between frames.
This fixes /proc/<pid>/stack.
Link: https://github.com/ClangBuiltLinux/linux/issues/912
Reported-by: Miles Chen <miles.chen@mediatek.com>
Tested-by: Miles Chen <miles.chen@mediatek.com>
Cc: stable@vger.kernel.org
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/hardware/memc.h')
0 files changed, 0 insertions, 0 deletions