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Subject[PATCH -tip v4 0/6] kprobes: introduce NOKPROBE_SYMBOL() and fixes crash bugs
Here is the version 4 of NOKPORBE_SYMBOL series.

In this version, I removed the cleanup patches and
add bugfixes I've found, since those bugs will be
Rest of the cleanup and visible blacklists will be
proposed later in another series.

Oh, just one new thing, I added a new RFC patch which
removes the dependency of notify_die() from kprobes
miss-hit/recovery path. Since the notify_die() involves
locking and lockdep code which invokes a lot of heavy
printk functions etc. This helped me to minimize the
blacklist and provides more stability for kprobes.
Actually, most of int3 handlers are already called
from do_int3 directly, I think this change is acceptable

Here is the updates about NOKPROBE_SYMBOL().
- Now _ASM_NOKPROBE() macro is introduced for assembly
symbols on x86.
- Rename kprobe_blackpoint to kprobe_blacklist_entry
and simplify it. Also NOKPROBE_SYMBOL() macro just
saves the address of non-probe-able symbols.


Masami Hiramatsu (6):
kprobes: Prohibit probing on .entry.text code
kprobes: Introduce NOKPROBE_SYMBOL() macro for blacklist
[BUGFIX] kprobes/x86: Prohibit probing on debug_stack_*
[BUGFIX] x86: Prohibit probing on native_set_debugreg
[BUGFIX] x86: Prohibit probing on thunk functions and restore
[RFC] kprobes/x86: Call exception handlers directly from do_int3/do_debug

Documentation/kprobes.txt | 16 +++++
arch/x86/include/asm/asm.h | 7 ++
arch/x86/include/asm/kprobes.h | 2 +
arch/x86/kernel/cpu/common.c | 4 +
arch/x86/kernel/entry_32.S | 33 -----------
arch/x86/kernel/entry_64.S | 20 -------
arch/x86/kernel/kprobes/core.c | 32 ++++------
arch/x86/kernel/paravirt.c | 5 ++
arch/x86/kernel/traps.c | 10 +++
arch/x86/lib/thunk_32.S | 3 +
arch/x86/lib/thunk_64.S | 3 +
include/asm-generic/ | 9 +++
include/linux/kprobes.h | 21 ++++++-
kernel/kprobes.c | 113 ++++++++++++++++++++-----------------
kernel/sched/core.c | 1
15 files changed, 147 insertions(+), 132 deletions(-)

IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory

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