The patch titled kprobes: refuse kprobe insertion on add/sub_preempt_counter() has been added to the -mm tree. Its filename is kprobes-refuse-kprobe-insertion-on-add-sub_preempt_counter.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: kprobes: refuse kprobe insertion on add/sub_preempt_counter() From: Srinivasa Ds <srinivasa@xxxxxxxxxx> Kprobes makes use of preempt_disable(),preempt_enable_noresched() and these functions inturn call add/sub_preempt_count(). So we need to refuse user from inserting probe in to these functions. This patch disallows user from probing add/sub_preempt_count(). Signed-off-by: Srinivasa DS <srinivasa@xxxxxxxxxx> Acked-by: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/sched.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN kernel/sched.c~kprobes-refuse-kprobe-insertion-on-add-sub_preempt_counter kernel/sched.c --- a/kernel/sched.c~kprobes-refuse-kprobe-insertion-on-add-sub_preempt_counter +++ a/kernel/sched.c @@ -3875,7 +3875,7 @@ static inline unsigned long get_parent_i return addr; } -void add_preempt_count(int val) +void __kprobes add_preempt_count(int val) { #ifdef CONFIG_DEBUG_PREEMPT /* @@ -3897,7 +3897,7 @@ void add_preempt_count(int val) } EXPORT_SYMBOL(add_preempt_count); -void sub_preempt_count(int val) +void __kprobes sub_preempt_count(int val) { #ifdef CONFIG_DEBUG_PREEMPT /* _ Patches currently in -mm which might be from srinivasa@xxxxxxxxxx are kprobes-refuse-kprobe-insertion-on-add-sub_preempt_counter.patch - To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html