On Wed, 16 May 2007 17:45:42 CDT, Klaus Weidner said: > Bug description: When I add an audit watch on a file with no arguments, I > get perm=rwxa but on ia64, changes to the mode and context aren't > audited. I get audit records on i386 and x86_64. > (from https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=239887 ) > > The sanity check in audit_match_class() is wrong, AUDIT_BITMASK_SIZE is > 64, providing space for 2048 syscalls in 64 * 32bit integers. The > comparison only supports 256 syscalls (sizeof __u32 is 4), and silently > returns "no match" for valid higher-numbered syscalls. > > This breaks class-based audit for all syscalls on ia64 since on that > architecture syscall numbers start at 1024. It breaks some syscall audit > on other architectures also, for example __NR_fchmodat is 306 on x86. > > I'd suggest adding a printk() in addition to returning 0 - you don't want > to silently ignore unknown or unsupported syscalls when auditing.
Make it rate-limited, so a program can't unintentionally spam your logs.
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