Author: Vegard Nossum <vegard.nossum@xxxxxxxxx> AuthorDate: Sun, 22 Feb 2009 18:40:24 +0100 Commit: Vegard Nossum <vegard.nossum@xxxxxxxxx> CommitDate: Sun, 22 Feb 2009 18:40:24 +0100 kmemcheck: make ftrace and kmemcheck mutually exclusive The function tracer will be called on page-fault entry, and it will access its internal structures, resulting in a recursive page fault. There are generally three ways to fix this: 1. Don't trace page faults if kmemcheck is compiled in. 2. Don't access tracked memory in ftrace. 3. Disallow kmemcheck and ftrace to be compiled in at the same time. We choose the easy one (#3) for now. Signed-off-by: Vegard Nossum <vegard.nossum@xxxxxxxxx> --- arch/x86/Kconfig.debug | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index 1067ad7..de186c5 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -279,6 +279,7 @@ menuconfig KMEMCHECK depends on (SLUB && !SLUB_DEBUG_ON) || (SLAB && !DEBUG_SLAB) depends on !CC_OPTIMIZE_FOR_SIZE depends on !DEBUG_PAGEALLOC + depends on !FUNCTION_TRACER select FRAME_POINTER select STACKTRACE default n -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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