Re: [patch 01/18] powerpc: Move stack randomization after syscall_enter_from_user_mode()
Mukesh Kumar Chaurasiya <[email protected]> Fri, 10 Jul 2026 00:02:27 +0530
| Newsgroups | gmane.linux.ports.alpha,gmane.linux.kernel,gmane.linux.ports.ppc64.devel,gmane.linux.ports.riscv,gmane.linux.ports.arm.kernel,gmane.linux.ports.mips,gmane.linux.ports.parisc,gmane.linux.ports.sh.devel,gmane.linux.uml.devel,gmane.linux.kernel.arc,gmane.linux.ports.hexagon,gmane.linux.ports.sparc,gmane.linux.kernel.cross-arch,gmane.linux.documentation |
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| 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]> [...]