On Fri, 2014-02-14 at 15:23 -0500, Richard Guy Briggs wrote:
> The AUDIT_SECCOMP record looks something like this:
>
> type=SECCOMP msg=audit(1373478171.953:32775): auid=4325 uid=4325 gid=4325
> ses=1 subj=unconfined_u:unconfined_r:unconfined_t:s0 pid=12381 comm="test"
> sig=31 syscall=231 compat=0 ip=0x39ea8bca89 code=0x0
>
> In order to determine what syscall 231 maps to, we need to have the arch=
> field right before it.
>
> To see the event, compile this test.c program:
>
> =====
> int main(void)
> {
> return seccomp_load(seccomp_init(SCMP_ACT_KILL));
> }
> =====
>
> gcc -g test.c -o test -lseccomp
>
> After running the program, find the record by: ausearch --start recent -m
> SECCOMP -i
> ---
> kernel/auditsc.c | 1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/auditsc.c b/kernel/auditsc.c
> index 6874c1f..c464d44 100644
> --- a/kernel/auditsc.c
> +++ b/kernel/auditsc.c
> @@ -2412,6 +2412,7 @@ void __audit_seccomp(unsigned long syscall, long signr,
> int code)
> return;
> audit_log_task(ab);
> audit_log_format(ab, " sig=%ld", signr);
> + audit_log_format(ab, " arch=%x", current->audit_context->arch);
What happens if the task does not have current->audit_context allocated?
Seems possible if signr is non-zero...
> audit_log_format(ab, " syscall=%ld", syscall);
> audit_log_format(ab, " compat=%d", is_compat_task());
> audit_log_format(ab, " ip=0x%lx", KSTK_EIP(current));
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