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| author | Takashi Iwai <tiwai@suse.de> | 2012-09-15 08:24:42 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-09-15 08:24:42 +0200 |
| commit | 5d037f9064a8f3b9abbe383cdfb35e159d813711 (patch) | |
| tree | 2a2445271ee818c360c42408a324d2945a6dd9f7 /kernel/events/callchain.c | |
| parent | 64f1e00d8edb54f5d25fb0114a46050fb8340df4 (diff) | |
| parent | 985b11fa8064d55d0d5a84e68667434598911bb2 (diff) | |
| download | op-kernel-dev-5d037f9064a8f3b9abbe383cdfb35e159d813711.zip op-kernel-dev-5d037f9064a8f3b9abbe383cdfb35e159d813711.tar.gz | |
Merge tag 'asoc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for 3.6
A bigger set of updates than I'm entirely comfortable with - things
backed up a bit due to travel. As ever the majority of these are small,
focused updates for specific drivers though there are a couple of core
changes. There's been good exposure in -next.
The AT91 patch fixes a build break.
Diffstat (limited to 'kernel/events/callchain.c')
| -rw-r--r-- | kernel/events/callchain.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c index 6581a04..98d4597 100644 --- a/kernel/events/callchain.c +++ b/kernel/events/callchain.c @@ -153,7 +153,8 @@ put_callchain_entry(int rctx) put_recursion_context(__get_cpu_var(callchain_recursion), rctx); } -struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) +struct perf_callchain_entry * +perf_callchain(struct perf_event *event, struct pt_regs *regs) { int rctx; struct perf_callchain_entry *entry; @@ -178,6 +179,12 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) } if (regs) { + /* + * Disallow cross-task user callchains. + */ + if (event->ctx->task && event->ctx->task != current) + goto exit_put; + perf_callchain_store(entry, PERF_CONTEXT_USER); perf_callchain_user(entry, regs); } |
