| From | Alexander Potapenko <> | Date | Fri, 8 Dec 2023 15:16:10 +0100 | Subject | Re: [PATCH v2 01/33] ftrace: Unpoison ftrace_regs in ftrace_ops_list_func() |
| |
On Tue, Nov 21, 2023 at 11:02 PM Ilya Leoshkevich <iii@linux.ibm.com> wrote: > > Architectures use assembly code to initialize ftrace_regs and call > ftrace_ops_list_func(). Therefore, from the KMSAN's point of view, > ftrace_regs is poisoned on ftrace_ops_list_func entry(). This causes > KMSAN warnings when running the ftrace testsuite.
I couldn't reproduce these warnings on x86, hope you really need this change on s390 :)
> Fix by trusting the architecture-specific assembly code and always > unpoisoning ftrace_regs in ftrace_ops_list_func. > > Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Alexander Potapenko <glider@google.com>
|