{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26937", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/gt: Reset queue_priority_hint on parking\n\nOriginally, with strict in order execution, we could complete execution\nonly when the queue was empty. Preempt-to-busy allows replacement of an\nactive request that may complete before the preemption is processed by\nHW. If that happens, the request is retired from the queue, but the\nqueue_priority_hint remains set, preventing direct submission until\nafter the next CS interrupt is processed.\n\nThis preempt-to-busy race can be triggered by the heartbeat, which will\nalso act as the power-management barrier and upon completion allow us to\nidle the HW. We may process the completion of the heartbeat, and begin\nparking the engine before the CS event that restores the\nqueue_priority_hint, causing us to fail the assertion that it is MIN.\n\n<3>[ 166.210729] __engine_park:283 GEM_BUG_ON(engine->sched_engine->queue_priority_hint != (-((int)(~0U >> 1)) - 1))\n<0>[ 166.210781] Dumping ftrace buffer:\n<0>[ 166.210795] ---------------------------------\n...\n<0>[ 167.302811] drm_fdin-1097 2..s1. 165741070us : trace_ports: 0000:00:02.0 rcs0: promote { ccid:20 1217:2 prio 0 }\n<0>[ 167.302861] drm_fdin-1097 2d.s2. 165741072us : execlists_submission_tasklet: 0000:00:02.0 rcs0: preempting last=1217:2, prio=0, hint=2147483646\n<0>[ 167.302928] drm_fdin-1097 2d.s2. 165741072us : __i915_request_unsubmit: 0000:00:02.0 rcs0: fence 1217:2, current 0\n<0>[ 167.302992] drm_fdin-1097 2d.s2. 165741073us : __i915_request_submit: 0000:00:02.0 rcs0: fence 3:4660, current 4659\n<0>[ 167.303044] drm_fdin-1097 2d.s1. 165741076us : execlists_submission_tasklet: 0000:00:02.0 rcs0: context:3 schedule-in, ccid:40\n<0>[ 167.303095] drm_fdin-1097 2d.s1. 165741077us : trace_ports: 0000:00:02.0 rcs0: submit { ccid:40 3:4660* prio 2147483646 }\n<0>[ 167.303159] kworker/-89 11..... 165741139us : i915_request_retire.part.0: 0000:00:02.0 rcs0: fence c90:2, current 2\n<0>[ 167.303208] kworker/-89 11..... 165741148us : __intel_context_do_unpin: 0000:00:02.0 rcs0: context:c90 unpin\n<0>[ 167.303272] kworker/-89 11..... 165741159us : i915_request_retire.part.0: 0000:00:02.0 rcs0: fence 1217:2, current 2\n<0>[ 167.303321] kworker/-89 11..... 165741166us : __intel_context_do_unpin: 0000:00:02.0 rcs0: context:1217 unpin\n<0>[ 167.303384] kworker/-89 11..... 165741170us : i915_request_retire.part.0: 0000:00:02.0 rcs0: fence 3:4660, current 4660\n<0>[ 167.303434] kworker/-89 11d..1. 165741172us : __intel_context_retire: 0000:00:02.0 rcs0: context:1216 retire runtime: { total:56028ns, avg:56028ns }\n<0>[ 167.303484] kworker/-89 11..... 165741198us : __engine_park: 0000:00:02.0 rcs0: parked\n<0>[ 167.303534] -0 5d.H3. 165741207us : execlists_irq_handler: 0000:00:02.0 rcs0: semaphore yield: 00000040\n<0>[ 167.303583] kworker/-89 11..... 165741397us : __intel_context_retire: 0000:00:02.0 rcs0: context:1217 retire runtime: { total:325575ns, avg:0ns }\n<0>[ 167.303756] kworker/-89 11..... 165741777us : __intel_context_retire: 0000:00:02.0 rcs0: context:c90 retire runtime: { total:0ns, avg:0ns }\n<0>[ 167.303806] kworker/-89 11..... 165742017us : __engine_park: __engine_park:283 GEM_BUG_ON(engine->sched_engine->queue_priority_hint != (-((int)(~0U >> 1)) - 1))\n<0>[ 167.303811] ---------------------------------\n<4>[ 167.304722] ------------[ cut here ]------------\n<2>[ 167.304725] kernel BUG at drivers/gpu/drm/i915/gt/intel_engine_pm.c:283!\n<4>[ 167.304731] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n<4>[ 167.304734] CPU: 11 PID: 89 Comm: kworker/11:1 Tainted: G W 6.8.0-rc2-CI_DRM_14193-gc655e0fd2804+ #1\n<4>[ 167.304736] Hardware name: Intel Corporation Rocket Lake Client Platform/RocketLake S UDIMM 6L RVP, BIOS RKLSFWI1.R00.3173.A03.2204210138 04/21/2022\n<4>[ 167.304738] Workqueue: i915-unordered retire_work_handler [i915]\n<4>[ 16\n---truncated---" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "22b7a426bbe1", "version_value": "67944e6db656" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "5.4", "status": "affected" }, { "version": "0", "lessThan": "5.4", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.274", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.215", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.154", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.84", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.24", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.12", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.3", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/67944e6db656bf1e986aa2a359f866f851091f8a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/67944e6db656bf1e986aa2a359f866f851091f8a" }, { "url": "https://git.kernel.org/stable/c/fe34587acc995e7b1d7a5d3444a0736721ec32b3", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/fe34587acc995e7b1d7a5d3444a0736721ec32b3" }, { "url": "https://git.kernel.org/stable/c/ac9b6b3e8d1237136c8ebf0fa1ce037dd7e2948f", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/ac9b6b3e8d1237136c8ebf0fa1ce037dd7e2948f" }, { "url": "https://git.kernel.org/stable/c/7eab7b021835ae422c38b968d5cc60e99408fb62", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/7eab7b021835ae422c38b968d5cc60e99408fb62" }, { "url": "https://git.kernel.org/stable/c/3b031e4fcb2740988143c303f81f69f18ce86325", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/3b031e4fcb2740988143c303f81f69f18ce86325" }, { "url": "https://git.kernel.org/stable/c/aed034866a08bb7e6e34d50a5629a4d23fe83703", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/aed034866a08bb7e6e34d50a5629a4d23fe83703" }, { "url": "https://git.kernel.org/stable/c/8fd9b0ce8c26533fe4d5d15ea15bbf7b904b611c", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8fd9b0ce8c26533fe4d5d15ea15bbf7b904b611c" }, { "url": "https://git.kernel.org/stable/c/4a3859ea5240365d21f6053ee219bb240d520895", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4a3859ea5240365d21f6053ee219bb240d520895" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }