On Thu, Apr 26, 2018 at 05:08:00PM +0900, Masami Hiramatsu wrote: > Hi, > > This 2nd version of the series which fixes %p uses in kprobes. > Some by replacing with %pS, some by replacing with %px but > masking with kallsyms_show_value(). > > V1 series is here: > https://lkml.org/lkml/2018/1/25/1 > > I've read the thread about %pK and if I understand correctly > we shouldn't print kernel addresses. However, kprobes debugfs > interface can not stop to show the actual probe address because > it should be compared with addresses in kallsyms for debugging. > So, it depends on that kallsyms_show_value() allows to show > address to user, because if it returns true, anyway that user > can dump /proc/kallsyms. > > Other error messages are replaced it with %pS, and one critical > function uses %px which is called right before BUG(). > > Also, I tried to fix this issue on each arch port. I searched > it by > > # find arch/* | grep -e 'kprobe.*c' | xargs grep -w %p > > And fixed all %p uses in those files. > > Changes in this version; > - [1/7] is newly added. > - patches for MN10300(deleted) and s390(merged) are removed. > > Thank you, > > --- > > Masami Hiramatsu (7): > kprobes: Make blacklist root user read only > kprobes: Show blacklist addresses as same as kallsyms does > kprobes: Show address of kprobes if kallsyms does > kprobes: Replace %p with other pointer types > kprobes/x86: Fix %p uses in error messages > kprobes/arm: Fix %p uses in error messages > kprobes/arm64: Fix %p uses in error messages > > > arch/arm/probes/kprobes/core.c | 10 ++++---- > arch/arm/probes/kprobes/test-core.c | 1 - > arch/arm64/kernel/probes/kprobes.c | 4 ++- > arch/x86/kernel/kprobes/core.c | 12 +++------ > kernel/kprobes.c | 46 ++++++++++++++++++++++------------- > 5 files changed, 40 insertions(+), 33 deletions(-) > > -- > Masami Hiramatsu (Linaro) <mhiramat@xxxxxxxxxx> <formletter> This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly. </formletter>
