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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-14 22:54:21 -0400 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-14 22:54:21 -0400 |
| commit | 3ec10cd8b526c6b10170c2649002672ee2019e73 (patch) | |
| tree | 27e3fb26020877ae43d3bcc5996c058957df3dc3 /kernel | |
| parent | 993916203f00e8c62599466a5caa866e09f0fae3 (diff) | |
| parent | 1be99f6c95e6c887756f789a60d15771235acd0c (diff) | |
Merge commit 'v2.6.38.3' into linaro-2.6.38
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/perf_event.c | 8 | ||||
| -rw-r--r-- | kernel/signal.c | 4 |
2 files changed, 9 insertions, 3 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index ad02feadb6b..b2536bd2b6b 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -62,7 +62,8 @@ static struct srcu_struct pmus_srcu; */ int sysctl_perf_event_paranoid __read_mostly = 1; -int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */ +/* Minimum for 512 kiB + 1 user control page */ +int sysctl_perf_event_mlock __read_mostly = 512 + (PAGE_SIZE / 1024); /* 'free' kiB per user */ /* * max perf event sample rate @@ -5916,6 +5917,11 @@ SYSCALL_DEFINE5(perf_event_open, goto err_alloc; } + if (task) { + put_task_struct(task); + task = NULL; + } + /* * Look up the group leader (we will attach this event to it): */ diff --git a/kernel/signal.c b/kernel/signal.c index 31751868de8..bf11d2697e9 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2423,7 +2423,7 @@ SYSCALL_DEFINE3(rt_sigqueueinfo, pid_t, pid, int, sig, /* Not even root can pretend to send signals from the kernel. * Nor can they impersonate a kill()/tgkill(), which adds source info. */ - if (info.si_code != SI_QUEUE) { + if (info.si_code >= 0 || info.si_code == SI_TKILL) { /* We used to allow any < 0 si_code */ WARN_ON_ONCE(info.si_code < 0); return -EPERM; @@ -2443,7 +2443,7 @@ long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info) /* Not even root can pretend to send signals from the kernel. * Nor can they impersonate a kill()/tgkill(), which adds source info. */ - if (info->si_code != SI_QUEUE) { + if (info->si_code >= 0 || info->si_code == SI_TKILL) { /* We used to allow any < 0 si_code */ WARN_ON_ONCE(info->si_code < 0); return -EPERM; |