[PATCH] tracing/syscalls: ignore numbers outside NR_syscalls' range
From: hch@infradead.org (Christoph Hellwig)
Date: 2014-10-30 08:26:13
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On Wed, Oct 29, 2014 at 11:06:58PM +0100, Rabin Vincent wrote:
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.While this patch looks like good caution, having syscalls outside of NR_syscalls seems like a receipe for a disaster. Can you try to fix that issue as ell, please?