Ard Biesheuvel 5a3ae7b314 arm64/ftrace: fix inadvertent BUG() in trampoline check ... The ftrace trampoline code (which deals with modules loaded out of BL range of the core kernel) uses plt_entries_equal() to check whether the per-module trampoline equals a zero buffer, to decide whether the trampoline has already been initialized. This triggers a BUG() in the opcode manipulation code, since we end up checking the ADRP offset of a 0x0 opcode, which is not an ADRP instruction. So instead, add a helper to check whether a PLT is initialized, and call that from the frace code. Cc: <stable@vger.kernel.org> # v5.0 Fixes: bdb85cd1d2 ("arm64/module: switch to ADRP/ADD sequences for PLT entries") Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>		2019-04-08 16:58:13 +01:00
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asm	arm64/ftrace: fix inadvertent BUG() in trampoline check	2019-04-08 16:58:13 +01:00
uapi/asm	kbuild: force all architectures except um to include mandatory-y	2019-03-17 12:56:32 +09:00