Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: Fix crash in icl_update_topdown_event() The perf_fuzzer found a hard-lockup crash on a RaptorLake machine: Oops: general protection fault, maybe for address 0xffff89aeceab400: 0000 CPU: 23 UID: 0 PID: 0 Comm: swapper/23 Tainted: [W]=WARN Hardware name: Dell Inc. Precision 9660/0VJ762 RIP: 0010:native_read_pmc+0x7/0x40 Code: cc e8 8d a9 01 00 48 89 03 5b cd cc cc cc cc 0f 1f ... RSP: 000:fffb03100273de8 EFLAGS: 00010046 .... Call Trace: <TASK> icl_update_topdown_event+0x165/0x190 ? ktime_get+0x38/0xd0 intel_pmu_read_event+0xf9/0x210 __perf_event_read+0xf9/0x210 CPUs 16-23 are E-core CPUs that don't support the perf metrics feature. The icl_update_topdown_event() should not be invoked on these CPUs. It's a regression of commit: f9bdf1f95339 ("perf/x86/intel: Avoid disable PMU if !cpuc->enabled in sample read") The bug introduced by that commit is that the is_topdown_event() function is mistakenly used to replace the is_topdown_count() call to check if the topdown functions for the perf metrics feature should be invoked. Fix it.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 781b2db0eb7731fbde510c268b7ccc62959c3feb before 702ea6028032d6c1fe96c2d4762a3575e3654819; affected e7f6922c8a5b41522a8329ea6bbf815993b2dd28 before 79e2dd573116d3338507c311460da9669095c94d; affected 3a8bec6583e5239de3bd597ab382dc6c2b0c29a1 before e97c45c770f5e56c784a46c2a96ab968d26b97d9; affected f9bdf1f953392c9edd69a7f884f78c0390127029 before a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f; affected f9bdf1f953392c9edd69a7f884f78c0390127029 before b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed; affected 06cd7bfbb86e9db3e9013ea6636ad2c6f0a1664d; affected d8370aa704bd7e384918c8f466856374725c0585; affected 6.1.134 before 6.1.149; affected 6.6.87 before 6.6.101; affected 6.12.23 before 6.12.49; affected 6.13.11 before 6.14; affected 6.14.2 before 6.15 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.1.149 through 6.1.*; unaffected 6.6.101 through 6.6.*; unaffected 6.12.49 through 6.12.*; unaffected 6.15.4 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/702ea6028032d6c1fe96c2d4762a3575e3654819
- https://git.kernel.org/stable/c/79e2dd573116d3338507c311460da9669095c94d
- https://git.kernel.org/stable/c/e97c45c770f5e56c784a46c2a96ab968d26b97d9
- https://git.kernel.org/stable/c/a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f
- https://git.kernel.org/stable/c/b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed
ADP enrichment
No English description supplied.
No English description supplied.