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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-26 06:04:14 +08:00
linux-next/arch/s390
Michal Hocko cf0d44d513 s390: fix info leak in do_sigsegv
Aleksa has reported incorrect si_errno value when stracing task which
received SIGSEGV:
[pid 20799] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_errno=2510266, si_addr=0x100000000000000}

The reason seems to be that do_sigsegv is not initializing siginfo
structure defined on the stack completely so it will leak 4B of
the previous stack content. Fix it simply by initializing si_errno
to 0 (same as do_sigbus does already).

Cc: stable # introduced pre-git times
Reported-by: Aleksa Sarai <asarai@suse.de>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-05-23 16:45:25 +02:00
..
appldata s390: appldata: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
boot s390/boot/decompression: disable floating point in decompressor 2015-09-29 14:45:10 +02:00
configs s390/config: update default configuration 2016-05-23 09:11:37 +02:00
crypto s390/crypto: cleanup and move the header with the cpacf definitions 2016-04-15 18:16:40 +02:00
hypfs mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
include Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-05-18 12:17:16 -07:00
kernel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-05-18 12:17:16 -07:00
kvm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-03-16 10:47:45 -07:00
lib s390/spinlock: avoid yield to non existent cpu 2016-04-15 18:01:48 +02:00
mm s390: fix info leak in do_sigsegv 2016-05-23 16:45:25 +02:00
net s390/bpf: fix recache skb->data/hlen for skb_vlan_push/pop 2016-05-19 09:14:27 +02:00
numa s390/numa: move numa_init_late() from device to arch_initcall 2016-01-26 12:45:24 +01:00
oprofile s390/oprofile: add z13/z13s model numbers 2016-02-24 12:18:10 +01:00
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-05-18 12:17:16 -07:00
tools s390/facilities: add helper tool to generate facility lists 2015-12-18 14:59:20 +01:00
defconfig s390/config: update default configuration 2016-05-23 09:11:37 +02:00
Kbuild s390/numa: add core infrastructure 2015-08-03 18:40:25 +02:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-05-18 12:17:16 -07:00
Kconfig.debug arch: consolidate CONFIG_STRICT_DEVM in lib/Kconfig.debug 2016-01-09 06:30:49 -08:00
Makefile s390/facilities: add helper tool to generate facility lists 2015-12-18 14:59:20 +01:00