Re: [PATCH v2 1/2] x86/uprobes: Keep shadow stack in sync for emulated CALLs
From: Oleg Nesterov <oleg@redhat.com>
Date: 2026-06-30 08:40:07
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On 06/29, David Windsor wrote:
Uprobe CALL emulation updates the normal user stack, but not the CET user
shadow stack. The subsequent RET then sees a stale shadow stack entry and
raises #CP.
Update the relative CALL emulation and XOL CALL fixup paths to keep the
shadow stack in sync.
Fixes: 488af8ea7131 ("x86/shstk: Wire in shadow stack interface")
Signed-off-by: David Windsor <redacted>Acked-by: Oleg Nesterov <oleg@redhat.com>