x86/callthunks: Correct calculation of dest address in is_callthunk()

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GCC didn't warn on the invalid use of relocation destination
pointer, so the calculated destination value was applied to
the uninitialized pointer location in error.

Fixes: 17bce3b2ae ("x86/callthunks: Handle %rip-relative relocations in call thunk template")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Closes: https://lore.kernel.org/lkml/20231201035457.GA321497@dev-arch.thelio-3990X/
Link: https://lore.kernel.org/r/20231201085727.3647051-1-ubizjak@gmail.com

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Uros Bizjak 2023-12-01 09:57:27 +01:00 • committed by Ingo Molnar

parent 9e9d673b2c

commit fc50065325

1 changed files with 1 additions and 1 deletions

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arch/x86/kernel/callthunks.c

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