perf/x86/intel/pt: Fix crash with stop filters in single-range mode
Add a check for !buf->single before calling pt_buffer_region_size in a
place where a missing check can cause a kernel crash.
Fixes a bug introduced by commit 670638477aed ("perf/x86/intel/pt:
Opportunistically use single range output mode"), which added a
support for PT single-range output mode. Since that commit if a PT
stop filter range is hit while tracing, the kernel will crash because
of a null pointer dereference in pt_handle_status due to calling
pt_buffer_region_size without a ToPA configured.
The commit which introduced single-range mode guarded almost all uses of
the ToPA buffer variables with checks of the buf->single variable, but
missed the case where tracing was stopped by the PT hardware, which
happens when execution hits a configured stop filter.
Tested that hitting a stop filter while PT recording successfully
records a trace with this patch but crashes without this patch.
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 17 Sep 2025 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* |
|
| Metrics |
cvssV3_1
|
cvssV3_1
|
Thu, 19 Dec 2024 09:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Projects
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-05-04T08:21:34.580Z
Reserved: 2024-06-20T11:09:39.050Z
Link: CVE-2022-48713
Updated: 2024-08-03T15:17:55.875Z
Status : Analyzed
Published: 2024-06-20T11:15:54.960
Modified: 2025-09-17T17:12:38.553
Link: CVE-2022-48713
OpenCVE Enrichment
Updated: 2025-07-12T16:01:37Z