android_kernel_oneplus_msm8998/arch/arc
Vineet Gupta 6bce4d0eb3 ARC: unwind: ensure that .debug_frame is generated (vs. .eh_frame)
commit f52e126cc7476196f44f3c313b7d9f0699a881fc upstream.

With recent binutils update to support dwarf CFI pseudo-ops in gas, we
now get .eh_frame vs. .debug_frame. Although the call frame info is
exactly the same in both, the CIE differs, which the current kernel
unwinder can't cope with.

This broke both the kernel unwinder as well as loadable modules (latter
because of a new unhandled relo R_ARC_32_PCREL from .rela.eh_frame in
the module loader)

The ideal solution would be to switch unwinder to .eh_frame.
For now however we can make do by just ensureing .debug_frame is
generated by removing -fasynchronous-unwind-tables

 .eh_frame    generated with -gdwarf-2 -fasynchronous-unwind-tables
 .debug_frame generated with -gdwarf-2

Fixes STAR 9001058196

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-10 11:49:25 +02:00
..
boot ARC: [plat-sim] unbork non default CONFIG_LINUX_LINK_BASE 2015-12-17 11:06:43 +05:30
configs ARC: switch to arc-linux- CROSS_COMPILE prefix across all configs 2015-11-16 12:00:09 +05:30
include ARC: Add missing io barriers to io{read,write}{16,32}be() 2016-05-11 11:21:20 +02:00
kernel arc: unwind: warn only once if DW2_UNWIND is disabled 2016-08-10 11:49:25 +02:00
lib ARCv2: lib: memcpy: use local symbols 2015-11-03 17:33:00 +05:30
mm ARC: mm: HIGHMEM: Fix section mismatch splat 2015-12-21 12:10:40 +05:30
oprofile ARC: OProfile support 2013-02-15 23:16:00 +05:30
plat-axs10x ARCv2: smp: [plat-*]: No need to explicitly call mcip_init_smp() 2015-10-28 16:13:41 +05:30
plat-sim ARC: remove extraneous header include 2015-11-14 13:11:38 +05:30
plat-tb10x ARC: [plat*] move code out of .init_machine into common 2014-10-13 14:46:13 +05:30
Kbuild ARC: Build system: Makefiles, Kconfig, Linker script 2013-02-11 20:00:25 +05:30
Kconfig ARCv2: LLSC: software backoff is NOT needed starting HS2.1c 2016-07-27 09:47:31 -07:00
Kconfig.debug ARC: With earlycon in use, retire EARLY_PRINTK 2015-05-11 11:20:21 +05:30
Makefile ARC: unwind: ensure that .debug_frame is generated (vs. .eh_frame) 2016-08-10 11:49:25 +02:00