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authorKees Cook <keescook@chromium.org>2012-04-12 21:47:58 (GMT)
committerJames Morris <james.l.morris@oracle.com>2012-04-14 01:13:20 (GMT)
commit3dc1c1b2d2ed7507ce8a379814ad75745ff97ebe (patch)
tree68ca991b7a3d2fc7623f6d86ba5827d6638974fd /kernel
parente2cfabdfd075648216f99c2c03821cf3f47c1727 (diff)
downloadlinux-3dc1c1b2d2ed7507ce8a379814ad75745ff97ebe.tar.xz
seccomp: remove duplicated failure logging
This consolidates the seccomp filter error logging path and adds more details to the audit log. Signed-off-by: Will Drewry <wad@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Eric Paris <eparis@redhat.com> v18: make compat= permanent in the record v15: added a return code to the audit_seccomp path by wad@chromium.org (suggested by eparis@redhat.com) v*: original by keescook@chromium.org Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/auditsc.c8
-rw-r--r--kernel/seccomp.c15
2 files changed, 7 insertions, 16 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index af1de0f..4b96415 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -67,6 +67,7 @@
#include <linux/syscalls.h>
#include <linux/capability.h>
#include <linux/fs_struct.h>
+#include <linux/compat.h>
#include "audit.h"
@@ -2710,13 +2711,16 @@ void audit_core_dumps(long signr)
audit_log_end(ab);
}
-void __audit_seccomp(unsigned long syscall)
+void __audit_seccomp(unsigned long syscall, long signr, int code)
{
struct audit_buffer *ab;
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
- audit_log_abend(ab, "seccomp", SIGKILL);
+ audit_log_abend(ab, "seccomp", signr);
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));
+ audit_log_format(ab, " code=0x%x", code);
audit_log_end(ab);
}
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 0aeec19..0f7c709 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -60,18 +60,6 @@ struct seccomp_filter {
/* Limit any path through the tree to 256KB worth of instructions. */
#define MAX_INSNS_PER_PATH ((1 << 18) / sizeof(struct sock_filter))
-static void seccomp_filter_log_failure(int syscall)
-{
- int compat = 0;
-#ifdef CONFIG_COMPAT
- compat = is_compat_task();
-#endif
- pr_info("%s[%d]: %ssystem call %d blocked at 0x%lx\n",
- current->comm, task_pid_nr(current),
- (compat ? "compat " : ""),
- syscall, KSTK_EIP(current));
-}
-
/**
* get_u32 - returns a u32 offset into data
* @data: a unsigned 64 bit value
@@ -381,7 +369,6 @@ void __secure_computing(int this_syscall)
case SECCOMP_MODE_FILTER:
if (seccomp_run_filters(this_syscall) == SECCOMP_RET_ALLOW)
return;
- seccomp_filter_log_failure(this_syscall);
exit_sig = SIGSYS;
break;
#endif
@@ -392,7 +379,7 @@ void __secure_computing(int this_syscall)
#ifdef SECCOMP_DEBUG
dump_stack();
#endif
- audit_seccomp(this_syscall);
+ audit_seccomp(this_syscall, exit_code, SECCOMP_RET_KILL);
do_exit(exit_sig);
}