Will Deacon c113a7fb01 arm64: debug: Ensure debug handlers check triggering exception level ... commit 6bd288569b upstream. Debug exception handlers may be called for exceptions generated both by user and kernel code. In many cases, this is checked explicitly, but in other cases things either happen to work by happy accident or they go slightly wrong. For example, executing 'brk #4' from userspace will enter the kprobes code and be ignored, but the instruction will be retried forever in userspace instead of delivering a SIGTRAP. Fix this issue in the most stable-friendly fashion by simply adding explicit checks of the triggering exception level to all of our debug exception handlers. Cc: <stable@vger.kernel.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-03-23 20:10:08 +01:00
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decode-insn.c	arm64: fix error: conflicting types for 'kprobe_fault_handler'	2016-11-07 18:15:21 +00:00
decode-insn.h	kprobes: move kprobe declarations to asm-generic/kprobes.h	2017-02-27 18:43:45 -08:00
kprobes.c	arm64: debug: Ensure debug handlers check triggering exception level	2019-03-23 20:10:08 +01:00
kprobes_trampoline.S	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
simulate-insn.c	arm64/kprobes: consistently handle MRS/MSR with XZR	2017-02-15 12:20:29 +00:00
simulate-insn.h	arm64: kprobes instruction simulation support	2016-07-19 15:03:21 +01:00
uprobes.c	arm64: introduce separated bits for mm_context_t flags	2017-08-22 18:13:04 +01:00