linux/arch/arc
Al Viro 5974db8fe4 arc: don't leak bits of kernel stack into coredump
commit 7798bf2140 upstream.

On faulting sigreturn we do get SIGSEGV, all right, but anything
we'd put into pt_regs could end up in the coredump.  And since
__copy_from_user() never zeroed on arc, we'd better bugger off
on its failure without copying random uninitialized bits of
kernel stack into pt_regs...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[bwh: Backported to 3.16:
 - Adjust context
 - Don't change the single return statement]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2017-02-23 03:54:00 +00:00
..
boot ARC: [nsimosci] move peripherals to match model to FPGA 2015-01-15 10:44:08 +00:00
configs ARC: [nsimosci] Unbork console 2014-04-05 18:36:51 +05:30
include ARC: uaccess: get_user to zero out dest in cause of fault 2016-11-20 01:17:27 +00:00
kernel arc: don't leak bits of kernel stack into coredump 2017-02-23 03:54:00 +00:00
lib ARC: switch to generic ENTRY/END assembler annotations 2014-03-26 14:31:28 +05:30
mm ARC: use ASL assembler mnemonic 2016-11-20 01:17:38 +00:00
oprofile ARC: OProfile support 2013-02-15 23:16:00 +05:30
plat-arcfpga ARC: [arcfpga] Early ARC UART to be only activated by cmdline 2014-06-03 14:20:09 +05:30
plat-tb10x ARC: [TB10x] Updates for GPIO and pinctrl 2013-11-11 09:57:44 +05:30
Kbuild ARC: Build system: Makefiles, Kconfig, Linker script 2013-02-11 20:00:25 +05:30
Kconfig Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP 2014-04-07 16:36:11 -07:00
Kconfig.debug consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Makefile ARC: unwind: ensure that .debug_frame is generated (vs. .eh_frame) 2016-08-22 22:38:22 +01:00