Oleg Nesterov 869ae76147 uprobes: __create_xol_area() must nullify xol_mapping.fault ... As Jiri pointed out, this recent commit: f872f5400c ("mm: Add a vm_special_mapping.fault() method") breaks uprobes: __create_xol_area() doesn't initialize the new ->fault() method and this obviously leads to kernel crash when the application tries to execute the probed insn after bp hit. We probably want to add uprobes_special_mapping_fault(), this allows to turn xol_area->xol_mapping into a single instance of vm_special_mapping. But we need a simple fix, so lets change __create_xol() to nullify the new member as Jiri suggests. Suggested-by: Jiri Olsa <jolsa@redhat.com> Reported-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <tipbot@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Pratyush Anand <panand@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160227221128.GA29565@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-02-29 08:47:51 +01:00
..
callchain.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
core.c	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-01-31 15:38:27 -08:00
hw_breakpoint.c	perf: Collapse and fix event_function_call() users	2016-01-21 18:54:24 +01:00
internal.h	perf: Fix AUX buffer refcounting	2015-07-06 14:08:30 +02:00
Makefile	ftrace: allow architectures to specify ftrace compile options	2015-01-29 09:19:19 +01:00
ring_buffer.c	perf: Synchronously free aux pages in case of allocation failure	2016-01-21 18:54:27 +01:00
uprobes.c	uprobes: __create_xol_area() must nullify xol_mapping.fault	2016-02-29 08:47:51 +01:00