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Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit

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Pull audit updates from Paul Moore:
 "Seven audit patches for 4.5, all very minor despite the diffstat.

  The diffstat churn for linux/audit.h can be attributed to needing to
  reshuffle the linux/audit.h header to fix the seccomp auditing issue
  (see the commit description for details).

  Besides the seccomp/audit fix, most of the fixes are around trying to
  improve the connection with the audit daemon and a Kconfig
  simplification.  Nothing crazy, and everything passes our little
  audit-testsuite"

* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
  audit: always enable syscall auditing when supported and audit is enabled
  audit: force seccomp event logging to honor the audit_enabled flag
  audit: Delete unnecessary checks before two function calls
  audit: wake up threads if queue switched from limited to unlimited
  audit: include auditd's threads in audit_log_start() wait exception
  audit: remove audit_backlog_wait_overflow
  audit: don't needlessly reset valid wait time
This commit is contained in:
Linus Torvalds
2016-01-17 18:48:49 -08:00
parent 25eedabe01 cb74ed278f
commit 2d663b5581
3 changed files with 114 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/audit.c
+7 -10
View File
@@ -110,7 +110,6 @@ static u32 audit_backlog_limit = 64;
#define AUDIT_BACKLOG_WAIT_TIME (60 * HZ)
static u32 audit_backlog_wait_time_master = AUDIT_BACKLOG_WAIT_TIME;
static u32 audit_backlog_wait_time = AUDIT_BACKLOG_WAIT_TIME;
static u32 audit_backlog_wait_overflow = 0;
/* The identity of the user shutting down the audit system. */
kuid_t audit_sig_uid = INVALID_UID;
@@ -509,8 +508,7 @@ static void flush_hold_queue(void)
* if auditd just disappeared but we
* dequeued an skb we need to drop ref
*/
if (skb)
consume_skb(skb);
consume_skb(skb);
}
static int kauditd_thread(void *dummy)
@@ -524,7 +522,8 @@ static int kauditd_thread(void *dummy)
skb = skb_dequeue(&audit_skb_queue);
if (skb) {
if (skb_queue_len(&audit_skb_queue) <= audit_backlog_limit)
if (!audit_backlog_limit ||
(skb_queue_len(&audit_skb_queue) <= audit_backlog_limit))
wake_up(&audit_backlog_wait);
if (audit_pid)
kauditd_send_skb(skb);
@@ -1232,9 +1231,7 @@ static void audit_buffer_free(struct audit_buffer *ab)
if (!ab)
return;
if (ab->skb)
kfree_skb(ab->skb);
kfree_skb(ab->skb);
spin_lock_irqsave(&audit_freelist_lock, flags);
if (audit_freelist_count > AUDIT_MAXFREE)
kfree(ab);
@@ -1372,7 +1369,7 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
return NULL;
if (gfp_mask & __GFP_DIRECT_RECLAIM) {
if (audit_pid && audit_pid == current->pid)
if (audit_pid && audit_pid == current->tgid)
gfp_mask &= ~__GFP_DIRECT_RECLAIM;
else
reserve = 0;
@@ -1395,12 +1392,12 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
skb_queue_len(&audit_skb_queue),
audit_backlog_limit);
audit_log_lost("backlog limit exceeded");
audit_backlog_wait_time = audit_backlog_wait_overflow;
audit_backlog_wait_time = 0;
wake_up(&audit_backlog_wait);
return NULL;
}
if (!reserve)
if (!reserve && !audit_backlog_wait_time)
audit_backlog_wait_time = audit_backlog_wait_time_master;
ab = audit_buffer_alloc(ctx, gfp_mask, type);