linux-stable/arch/xtensa/mm
Eric W. Biederman 3eb0f5193b signal: Ensure every siginfo we send has all bits initialized
Call clear_siginfo to ensure every stack allocated siginfo is properly
initialized before being passed to the signal sending functions.

Note: It is not safe to depend on C initializers to initialize struct
siginfo on the stack because C is allowed to skip holes when
initializing a structure.

The initialization of struct siginfo in tracehook_report_syscall_exit
was moved from the helper user_single_step_siginfo into
tracehook_report_syscall_exit itself, to make it clear that the local
variable siginfo gets fully initialized.

In a few cases the scope of struct siginfo has been reduced to make it
clear that siginfo siginfo is not used on other paths in the function
in which it is declared.

Instances of using memset to initialize siginfo have been replaced
with calls clear_siginfo for clarity.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-04-25 10:40:51 -05:00
..
cache.c mm: fix races between swapoff and flush dcache 2018-04-05 21:36:26 -07:00
fault.c signal: Ensure every siginfo we send has all bits initialized 2018-04-25 10:40:51 -05:00
highmem.c sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_* 2015-05-19 08:39:14 +02:00
init.c xtensa: fix high memory/reserved memory collision 2018-02-15 09:46:42 -08:00
ioremap.c xtensa: support ioremap for memory outside KIO region 2016-01-11 17:37:36 +03:00
kasan_init.c xtensa: add support for KASAN 2017-12-16 22:37:12 -08:00
Makefile xtensa: add support for KASAN 2017-12-16 22:37:12 -08:00
misc.S xtensa: implement clear_user_highpage and copy_user_highpage 2014-08-14 11:59:20 +04:00
mmu.c xtensa: don't clear swapper_pg_dir in paging_init 2017-12-16 22:37:11 -08:00
tlb.c xtensa: clean up custom-controlled debug output 2017-12-16 22:37:08 -08:00