powerpc: Move stack randomization after syscall_enter_from_user_mode()

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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 <tglx@kernel.org>
Tested-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Reviewed-by: Radu Rendec <radu@rendec.net>
Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Link: https://patch.msgid.link/20260707190253.718191130@kernel.org

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Thomas Gleixner 2026-07-07 21:05:58 +02:00

parent 5b6e32ba7b

commit 89d163dd9d

1 changed files with 1 additions and 1 deletions

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arch/powerpc/kernel/syscall.c

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