x86/ptrace: Remove set_segment_reg() implementations for current

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seg_segment_reg() should be unreachable with task == current.
Rather than confusingly trying to make it work, just explicitly
disable this case.

(regset->get is used for current in the coredump code, but the ->set
 interface is only used for ptrace, and you can't ptrace yourself.)

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

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Andy Lutomirski 2019-07-15 10:08:48 -07:00 • committed by Ingo Molnar

parent 0337b7ebfc

commit 8e05f1b4f2

1 changed files with 7 additions and 12 deletions

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arch/x86/kernel/ptrace.c

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