Re: [patch 01/18] powerpc: Move stack randomization after syscall_enter_from_user_mode()
Mukesh Kumar Chaurasiya <[email protected]>
| Newsgroups | dev.linux.lists.loongarch,org.infradead.lists.linux-riscv,org.infradead.lists.linux-snps-arc,org.infradead.lists.linux-um,org.kernel.vger.linux-alpha,org.kernel.vger.linux-arch,org.kernel.vger.linux-csky,org.kernel.vger.linux-doc,org.kernel.vger.linux-hexagon,org.kernel.vger.linux-kernel,org.kernel.vger.linux-m68k,org.kernel.vger.linux-mips,org.kernel.vger.linux-openrisc,org.kernel.vger.linux-parisc,org.kernel.vger.linux-s390,org.kernel.vger.linux-sh,org.kernel.vger.sparclinux,org.ozlabs.lists.linuxppc-dev |
|---|---|
| Message-ID | <[email protected]> |
On Tue, Jul 07, 2026 at 09:05:58PM +0200, Thomas Gleixner wrote: > add_random_kstack_offset() is invoked before syscall_enter_from_user_mode() > establishes state. That's wrong because add_random_kstack_offset() calls > into instrumentable code. > > Move it after syscall_enter_from_user_mode() to ensure that state is > correctly established. > > Signed-off-by: Thomas Gleixner <[email protected]> > Cc: Michael Ellerman <[email protected]> > Cc: Shrikanth Hegde <[email protected]> > Cc: [email protected] Thanks for fixing this. Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <[email protected]> [...]