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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-07-30 11:45:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-07-30 11:45:30 -0700 |
| commit | 0634922a78f08df22037ec4ddee717f92d892a68 (patch) | |
| tree | 7885f09c621366bb9f8e13e2ac6edd9d81ecd485 /kernel | |
| parent | fb20c03d3748fc6991dd58a3161c0d954485c2ce (diff) | |
| parent | 7f635ff187ab6be0b350b3ec06791e376af238ab (diff) | |
| download | linux-0634922a78f08df22037ec4ddee717f92d892a68.tar.gz | |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar: "Misc fixes: - AMD IBS data corruptor fix (uncovered by UBSAN) - an Intel PEBS entry unwind error fix - a HW-tracing crash fix - a MAINTAINERS update" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Fix crash when using HW tracing kernel filters perf/x86/intel: Fix unwind errors from PEBS entries (mk-II) MAINTAINERS: Add Naveen N. Rao as kprobes co-maintainer perf/x86/amd/ibs: Don't access non-started event
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/core.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 8f0434a9951a..eec2d5fb676b 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6343,7 +6343,7 @@ static u64 perf_virt_to_phys(u64 virt) static struct perf_callchain_entry __empty_callchain = { .nr = 0, }; -static struct perf_callchain_entry * +struct perf_callchain_entry * perf_callchain(struct perf_event *event, struct pt_regs *regs) { bool kernel = !event->attr.exclude_callchain_kernel; @@ -6382,7 +6382,9 @@ void perf_prepare_sample(struct perf_event_header *header, if (sample_type & PERF_SAMPLE_CALLCHAIN) { int size = 1; - data->callchain = perf_callchain(event, regs); + if (!(sample_type & __PERF_SAMPLE_CALLCHAIN_EARLY)) + data->callchain = perf_callchain(event, regs); + size += data->callchain->nr; header->size += size * sizeof(u64); @@ -7335,6 +7337,10 @@ static bool perf_addr_filter_match(struct perf_addr_filter *filter, struct file *file, unsigned long offset, unsigned long size) { + /* d_inode(NULL) won't be equal to any mapped user-space file */ + if (!filter->path.dentry) + return false; + if (d_inode(filter->path.dentry) != file_inode(file)) return false; |