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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2014-06-14 06:47:12 +0000
committerIngo Molnar <mingo@kernel.org>2014-06-14 09:07:44 +0200
commit4cdf77a828b056258f48a9f6078bd2f77d9704bb (patch)
tree2a7a904eddc42c595c6a82204a9032b97d0c071f /tools
parented9ea4ed3a44e8f8e8c7e8a12a05fd73f9ae1fb4 (diff)
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x86/kprobes: Fix build errors and blacklist context_track_user
This essentially reverts commit: ecd50f714c42 ("kprobes, x86: Call exception_enter after kprobes handled") since it causes build errors with CONFIG_CONTEXT_TRACKING and that has been made from misunderstandings; context_track_user_*() don't involve much in interrupt context, it just returns if in_interrupt() is true. Instead of changing the do_debug/int3(), this just adds context_track_user_*() to kprobes blacklist, since those are still can be called right before kprobes handles int3 and debug exceptions, and probing those will cause an infinite loop. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Borislav Petkov <bp@suse.de> Cc: Kees Cook <keescook@chromium.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Seiji Aguchi <seiji.aguchi@hds.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/20140614064711.7865.45957.stgit@kbuild-fedora.novalocal Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools')
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