Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v3 1/2] powerpc/32: Warn and return ENOSYS on syscalls from kernel | Date | Fri, 6 Mar 2020 11:27:40 +1100 (AEDT) |
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On Fri, 2020-01-31 at 11:34:54 UTC, Christophe Leroy wrote: > Since commit b86fb88855ea ("powerpc/32: implement fast entry for > syscalls on non BOOKE") and commit 1a4b739bbb4f ("powerpc/32: > implement fast entry for syscalls on BOOKE"), syscalls from > kernel are unexpected and can have catastrophic consequences > as it will destroy the kernel stack. > > Test MSR_PR on syscall entry. In case syscall is from kernel, > emit a warning and return ENOSYS error. > > Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/9e27086292aa880921a0f2b8501e5189d5efcf03
cheers
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