x86/asm/traps: Disable tracing and kprobes in fixup_bad_iret and sync_regs

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commit 7ddc6a2199 upstream.

These functions can be executed on the int3 stack, so kprobes
are dangerous. Tracing is probably a bad idea, too.

Fixes: b645af2d59 ("x86_64, traps: Rework bad_iret")
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/50e33d26adca60816f3ba968875801652507d0c4.1416870125.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Andy Lutomirski 2014-11-24 17:39:06 -08:00 • committed by Greg Kroah-Hartman

parent 8f8c0add0c

commit afe83db5dd

1 changed files with 3 additions and 2 deletions

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arch/x86/kernel/traps.c

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