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-rw-r--r--include/linux/audit.h8
-rw-r--r--kernel/auditsc.c50
-rw-r--r--kernel/seccomp.c2
3 files changed, 39 insertions, 21 deletions
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 426ab9f..6e1c533 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -430,6 +430,7 @@ extern void audit_putname(const char *name);
extern void __audit_inode(const char *name, const struct dentry *dentry);
extern void __audit_inode_child(const struct dentry *dentry,
const struct inode *parent);
+extern void __audit_seccomp(unsigned long syscall);
extern void __audit_ptrace(struct task_struct *t);
static inline int audit_dummy_context(void)
@@ -453,6 +454,12 @@ static inline void audit_inode_child(const struct dentry *dentry,
}
void audit_core_dumps(long signr);
+static inline void audit_seccomp(unsigned long syscall)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_seccomp(syscall);
+}
+
static inline void audit_ptrace(struct task_struct *t)
{
if (unlikely(!audit_dummy_context()))
@@ -558,6 +565,7 @@ extern int audit_signals;
#define audit_inode(n,d) do { (void)(d); } while (0)
#define audit_inode_child(i,p) do { ; } while (0)
#define audit_core_dumps(i) do { ; } while (0)
+#define audit_seccomp(i) do { ; } while (0)
#define auditsc_get_stamp(c,t,s) (0)
#define audit_get_loginuid(t) (-1)
#define audit_get_sessionid(t) (-1)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 7c49514..e9bcb93 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -2529,6 +2529,25 @@ void __audit_mmap_fd(int fd, int flags)
context->type = AUDIT_MMAP;
}
+static void audit_log_abend(struct audit_buffer *ab, char *reason, long signr)
+{
+ uid_t auid, uid;
+ gid_t gid;
+ unsigned int sessionid;
+
+ auid = audit_get_loginuid(current);
+ sessionid = audit_get_sessionid(current);
+ current_uid_gid(&uid, &gid);
+
+ audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
+ auid, uid, gid, sessionid);
+ audit_log_task_context(ab);
+ audit_log_format(ab, " pid=%d comm=", current->pid);
+ audit_log_untrustedstring(ab, current->comm);
+ audit_log_format(ab, " reason=");
+ audit_log_string(ab, reason);
+ audit_log_format(ab, " sig=%ld", signr);
+}
/**
* audit_core_dumps - record information about processes that end abnormally
* @signr: signal value
@@ -2539,10 +2558,6 @@ void __audit_mmap_fd(int fd, int flags)
void audit_core_dumps(long signr)
{
struct audit_buffer *ab;
- u32 sid;
- uid_t auid = audit_get_loginuid(current), uid;
- gid_t gid;
- unsigned int sessionid = audit_get_sessionid(current);
if (!audit_enabled)
return;
@@ -2551,24 +2566,17 @@ void audit_core_dumps(long signr)
return;
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
- current_uid_gid(&uid, &gid);
- audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
- auid, uid, gid, sessionid);
- security_task_getsecid(current, &sid);
- if (sid) {
- char *ctx = NULL;
- u32 len;
+ audit_log_abend(ab, "memory violation", signr);
+ audit_log_end(ab);
+}
- if (security_secid_to_secctx(sid, &ctx, &len))
- audit_log_format(ab, " ssid=%u", sid);
- else {
- audit_log_format(ab, " subj=%s", ctx);
- security_release_secctx(ctx, len);
- }
- }
- audit_log_format(ab, " pid=%d comm=", current->pid);
- audit_log_untrustedstring(ab, current->comm);
- audit_log_format(ab, " sig=%ld", signr);
+void __audit_seccomp(unsigned long syscall)
+{
+ struct audit_buffer *ab;
+
+ ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
+ audit_log_abend(ab, "seccomp", SIGKILL);
+ audit_log_format(ab, " syscall=%ld", syscall);
audit_log_end(ab);
}
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 57d4b13..e8d76c5 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -6,6 +6,7 @@
* This defines a simple but solid secure-computing mode.
*/
+#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/sched.h>
#include <linux/compat.h>
@@ -54,6 +55,7 @@ void __secure_computing(int this_syscall)
#ifdef SECCOMP_DEBUG
dump_stack();
#endif
+ audit_seccomp(this_syscall);
do_exit(SIGKILL);
}
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