Resolve deadlock in RustBootServicesAllocatorDxe #358
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Introduces 5 new commits in [Common/MU](https://github.com/microsoft/mu_plus.git). <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/microsoft/mu_plus/commit/61f7188ab5afcbe36c687bd46fb29fead955124d">61f718</a> Inspect `mLoggerInfo` before accessing in the event callback (<a href="https://github.com/microsoft/mu_plus/pull/345">#345</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/2591f7aa3ba4f8ccaf25aad6b123a62b035be799">2591f7</a> pip: bump edk2-pytool-extensions from 0.26.0 to 0.26.2 (<a href="https://github.com/microsoft/mu_plus/pull/360">#360</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/feed5579b26049764f7eaa234d5b335ee9665c4a">feed55</a> Resolve deadlock in RustBootServicesAllocatorDxe (<a href="https://github.com/microsoft/mu_plus/pull/358">#358</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/1edf7275bd0a0c1757740a21e26e8d0ddecfc2ae">1edf72</a> Fix rust advlogger deadlock (<a href="https://github.com/microsoft/mu_plus/pull/356">#356</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/14c187b8ac4858d154612cd67a96820f78fe5584">14c187</a> Add SetProtocol command to force devices to Report Mode (<a href="https://github.com/microsoft/mu_plus/pull/361">#361</a>)</li> </ul> </details> Signed-off-by: Project Mu Bot <mubot@microsoft.com>
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Introduces 5 new commits in [Common/MU](https://github.com/microsoft/mu_plus.git). <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/microsoft/mu_plus/commit/feed5579b26049764f7eaa234d5b335ee9665c4a">feed55</a> Resolve deadlock in RustBootServicesAllocatorDxe (<a href="https://github.com/microsoft/mu_plus/pull/358">#358</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/1edf7275bd0a0c1757740a21e26e8d0ddecfc2ae">1edf72</a> Fix rust advlogger deadlock (<a href="https://github.com/microsoft/mu_plus/pull/356">#356</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/14c187b8ac4858d154612cd67a96820f78fe5584">14c187</a> Add SetProtocol command to force devices to Report Mode (<a href="https://github.com/microsoft/mu_plus/pull/361">#361</a>)</li> </ul> </details> Signed-off-by: Project Mu Bot <mubot@microsoft.com>
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## Description Fix an issue where rust boot services allocator implementation could deadlock if memory allocations were attempted at different TPLs. Deadlock occurs in following scenario: 1. Task running at low TPL initiates an allocation request. 2. While that allocation is in progress and the lock is held, an interrupt occurs, and a new task executes at a higher TPL 3. new task attempts an allocation. Deadlock occurs because the higher TPL task cannot acquire the lock because it is held by the lower TPL task, and the lower TPL task cannot make forward progress because it has been interrupted by the higher TPL task. To resolve this, this PR updates the allocation implementation to remove the spinlock. An AtomicPtr is used to give well-ordered access to the bootservices pointer used as the basis for the allocation implementation. Other aspects of the implementation (i.e. creation of the allocation tracker) are already thread-safe or are the responsibility of the boot services implementation. PR also contains some minor style cleanup. - [ ] Impacts functionality? - [ ] Impacts security? - [ ] Breaking change? - [x] Includes tests? - RustBootServicesAllocatorDxe unit tests updated to accommodate new implementation. - [ ] Includes documentation? ## How This Was Tested Verified boot on QEMU. ## Integration Instructions N/A
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## Description Fix an issue where rust boot services allocator implementation could deadlock if memory allocations were attempted at different TPLs. Deadlock occurs in following scenario: 1. Task running at low TPL initiates an allocation request. 2. While that allocation is in progress and the lock is held, an interrupt occurs, and a new task executes at a higher TPL 3. new task attempts an allocation. Deadlock occurs because the higher TPL task cannot acquire the lock because it is held by the lower TPL task, and the lower TPL task cannot make forward progress because it has been interrupted by the higher TPL task. To resolve this, this PR updates the allocation implementation to remove the spinlock. An AtomicPtr is used to give well-ordered access to the bootservices pointer used as the basis for the allocation implementation. Other aspects of the implementation (i.e. creation of the allocation tracker) are already thread-safe or are the responsibility of the boot services implementation. PR also contains some minor style cleanup. - [ ] Impacts functionality? - [ ] Impacts security? - [ ] Breaking change? - [x] Includes tests? - RustBootServicesAllocatorDxe unit tests updated to accommodate new implementation. - [ ] Includes documentation? ## How This Was Tested Verified boot on QEMU. ## Integration Instructions N/A
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Introduces 84 new commits in [Common/MU](https://github.com/microsoft/mu_plus.git). <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/microsoft/mu_plus/commit/aee3120915d9811fecb6f8f86f3c1e97adf57ed6">aee312</a> Update readme for the 202308 release</li> <li><a href="https://github.com/microsoft/mu_plus/commit/0e9ec1e6e2c06c0c0e9730869dd0c667df889b87">0e9ec1</a> Updated override for DisplayEngineDxe.inf</li> <li><a href="https://github.com/microsoft/mu_plus/commit/c8771a2f1d74d772faade363e6895d4aa981e26d">c8771a</a> Updated Readme to include changes made since the last release</li> <li><a href="https://github.com/microsoft/mu_plus/commit/22cf122e60c409a035a89fd9bc2fc54fb2f3fd2a">22cf12</a> TEMP COMMIT: use test branches for submodules</li> <li><a href="https://github.com/microsoft/mu_plus/commit/8f57057e10ac45110328f04a35eb03b77f4d31be">8f5705</a> Add HiiKeyboardLayout crate to support UEFI HII Keyboard Layouts (<a href="https://github.com/microsoft/mu_plus/pull/342">#342</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/d881e0bafc2b8360a3a2c20b2d9ed22a1422d366">d881e0</a> TpmTestingPkg: Add InputChannelLib (<a href="https://github.com/microsoft/mu_plus/pull/352">#352</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/1114f7d8fecad3353ab74613e7120f32176df446">1114f7</a> Repo File Sync: MuDevOpsWrapper.yml - 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useful for test environments.</li> <li><a href="https://github.com/microsoft/mu_plus/commit/c209c243f2b40990c91c10df3ae4a270736ab17b">c209c2</a> Create separate FrameBufferMemDrawLib inf for PEI and DXE (<a href="https://github.com/microsoft/mu_plus/pull/373">#373</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/6876d73890b39bab36d7e92d7b3cc758c81cf93a">6876d7</a> MemoryProtectionTestApp: Separate Reset Method Init to Arch Specific Files (<a href="https://github.com/microsoft/mu_plus/pull/376">#376</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/ff8f8d35b36bbe4569c391033c7b110c5cc1c43d">ff8f8d</a> MsCorePkg/SecureBootKeyStoreLib: Add Library implementation (<a href="https://github.com/microsoft/mu_plus/pull/377">#377</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/a9a60670433c82635d8cd0841aed995fcee1454b">a9a606</a> pip: update to latest</li> <li><a href="https://github.com/microsoft/mu_plus/commit/2967422499962f355db17e2ba73d81694fc34439">296742</a> Minor debug print updates for DxePagingAuditTestApp (<a href="https://github.com/microsoft/mu_plus/pull/382">#382</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/ce3708db055619fdc4ca870773ef3d84d4b60a67">ce3708</a> DxePagingAudit: Update MemoryOutsideEfiMemoryMapIsInaccessible Test (<a href="https://github.com/microsoft/mu_plus/pull/381">#381</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/81cb602b3389821ea868d4e316c3f2d7d4853001">81cb60</a> GitHub Action: Bump actions/setup-python from 4 to 5 (<a href="https://github.com/microsoft/mu_plus/pull/383">#383</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/1c47d4a9aa60ddc690ba48dcdf5c8c087a494d67">1c47d4</a> Adding policy check for advanced file logger (<a href="https://github.com/microsoft/mu_plus/pull/384">#384</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/1c3b493b1aad8ab0b2fca5e5a4449f25059066a2">1c3b49</a> Add header guards missing in some files</li> <li><a href="https://github.com/microsoft/mu_plus/commit/ab2aa4d045b4a868cb10940193d370ab124ada4e">ab2aa4</a> MsWheaPkg/MsWheaEarlyStorageLib: Remove unused static function</li> <li><a href="https://github.com/microsoft/mu_plus/commit/7e75ea6ba6f8dc4684916f4979814fa9fc485418">7e75ea</a> MsWheaPkg/MsWheaEarlyStorageLib: Remove unsigned comparisons to zero</li> <li><a href="https://github.com/microsoft/mu_plus/commit/0e6136517ad67955a8f659ecf44f04a5a161e359">0e6136</a> MsGraphicsPkg/SimpleUIToolKit: Move array bounds check before access (<a href="https://github.com/microsoft/mu_plus/pull/386">#386</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/57a966eb9868f828c82ddd537e0cbdd542e2dabd">57a966</a> Implement a new version of UefiHidDxeV2 with significant improvements to unit test capability and general architecture. (<a href="https://github.com/microsoft/mu_plus/pull/374">#374</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/de375655dcd0bc59ddc0deee8a32d3285ba9dbc2">de3756</a> Updated CISettings.py for pipeline testing</li> <li><a href="https://github.com/microsoft/mu_plus/commit/e7665f1338708daf51e7d9e5a90d50edde959daa">e7665f</a> Update readme for the 202311 release</li> <li><a href="https://github.com/microsoft/mu_plus/commit/d084bbafe43dc7acf4c016dfafaba73f5932fa86">d084bb</a> Added patch notes for the release</li> <li><a href="https://github.com/microsoft/mu_plus/commit/345d45e3ac5b90f3bd0c7fa864645bea2a614fde">345d45</a> TEMP COMMIT: Updated submodules to point to the 2311_Staging branches</li> <li><a href="https://github.com/microsoft/mu_plus/commit/22485651a0184f889d47e838dc334730d251df44">224856</a> pip: bump edk2-pytool-library from 0.19.7 to 0.19.8 (<a href="https://github.com/microsoft/mu_plus/pull/391">#391</a>)</li> <li><a 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href="https://github.com/microsoft/mu_plus/pull/402">#402</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/ad7b45a1ba9a56d710d02a7bc5b00377dd9a901b">ad7b45</a> Remove Pre-Split MemoryProtectionTestApp Files (<a href="https://github.com/microsoft/mu_plus/pull/405">#405</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/a19c8f19441370bff59cb6c5aae071ed7e0c2550">a19c8f</a> Add prefix for advanced logger memory message entries (<a href="https://github.com/microsoft/mu_plus/pull/388">#388</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/af59b6c082b9b4ebac0f96543c3aeaa0e449bde5">af59b6</a> .git-blame-ignore-revs: Ignore Line Ending and Uncrustify only commits (<a href="https://github.com/microsoft/mu_plus/pull/404">#404</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/2841d8e1c2a5eec55c696c0817ada2d64e8aab3e">2841d8</a> Fixing uninitialized variable build error (<a href="https://github.com/microsoft/mu_plus/pull/406">#406</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/41000b344e143d1dfbdbd1912f41497bf9608d31">41000b</a> pip: bump edk2-pytool-library from 0.19.8 to 0.19.9 (<a href="https://github.com/microsoft/mu_plus/pull/407">#407</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/de28d44946778394c9004aa2235ac01bd604d34c">de28d4</a> Wrap advanced logger buffer cursor when the logging area is full (<a href="https://github.com/microsoft/mu_plus/pull/408">#408</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/345c05818db7b8d27273043b22075e972c3751dd">345c05</a> Updated submodule branches to release 202311 and made compatibility changes associated with that</li> <li><a href="https://github.com/microsoft/mu_plus/commit/5d2471f48f6a638601c1cb9a105f650ce8cb928d">5d2471</a> Removed references to libraries that no longer exist</li> <li><a href="https://github.com/microsoft/mu_plus/commit/b39e5ccd5a72ce34cc7892edc99e3c9479baa898">b39e5c</a> Updated CISettings.py to use the edk2toolext codeql helpers (<a href="https://github.com/microsoft/mu_plus/pull/414">#414</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/6d5e0c5ff29037bbd02f20ccc37e4a25c4b5e806">6d5e0c</a> Add call to HdwPortInitialize() when instantiating logger in DXE (<a href="https://github.com/microsoft/mu_plus/pull/411">#411</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/3c47b5f8e2f2bce5533fe446be011938445103db">3c47b5</a> Fixing Advanced logger wrapping unit test (<a href="https://github.com/microsoft/mu_plus/pull/417">#417</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/d567b5e74c50c5fa814722e703174c55a5c285fb">d567b5</a> Adding a more adapt python tooling for Advanced Logger v4 (<a href="https://github.com/microsoft/mu_plus/pull/415">#415</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/5e8ac1d37eb330cebef1c5b8f2f0fcd9a4a74738">5e8ac1</a> Repo File Sync: Add Cargo features to Makefile.toml (<a href="https://github.com/microsoft/mu_plus/pull/409">#409</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/bd05d55d9c2d6dc6b057f795a27f67d1c0bfc0c4">bd05d5</a> AdvLoggerPkg: 64-bit SEC & PEI C Code changes</li> <li><a href="https://github.com/microsoft/mu_plus/commit/6d7c66583426a3b7d0978cb4e1e38ec92ce1561d">6d7c66</a> AdvLoggerPkg/SecDebugAgent: Update for 64-bit</li> <li><a href="https://github.com/microsoft/mu_plus/commit/cf46ce4a55be2ca552c1cc29743635d1edd243dd">cf46ce</a> GitHub Action: Bump actions/cache from 3 to 4 (<a href="https://github.com/microsoft/mu_plus/pull/412">#412</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/cd90897ac68d593c387800aebda9492e26f93519">cd9089</a> Update pip-requirements.txt (<a href="https://github.com/microsoft/mu_plus/pull/421">#421</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/2ea56de87830b3d8f280432c3461b4508f62a39e">2ea56d</a> GitHub Action: Bump robinraju/release-downloader from 1.8 to 1.9 (<a href="https://github.com/microsoft/mu_plus/pull/425">#425</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/1b10bac37eeb213ff99978bc051ed8b73608a014">1b10ba</a> Repo File Sync: synced file(s) with microsoft/mu_devops (<a href="https://github.com/microsoft/mu_plus/pull/427">#427</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/a3d2d5b54c1ad16215ed3b137cdb27618cda0f86">a3d2d5</a> pip: bump edk2-pytool-extensions from 0.27.0 to 0.27.2 (<a href="https://github.com/microsoft/mu_plus/pull/429">#429</a>)</li> <li><a href="https://github.com/microsoft/mu_plus/commit/c9d74b38897beb2993235ee14ef7fa86038c5e1d">c9d74b</a> Repo File Sync: 202311 Branch Transition Updates (<a href="https://github.com/microsoft/mu_plus/pull/430">#430</a>)</li> </ul> </details> Signed-off-by: Project Mu Bot <mubot@microsoft.com>
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Description
Fix an issue where rust boot services allocator implementation could deadlock if memory allocations were attempted at different TPLs. Deadlock occurs in following scenario:
Deadlock occurs because the higher TPL task cannot acquire the lock because it is held by the lower TPL task, and the lower TPL task cannot make forward progress because it has been interrupted by the higher TPL task.
To resolve this, this PR updates the allocation implementation to remove the spinlock. An AtomicPtr is used to give well-ordered access to the bootservices pointer used as the basis for the allocation implementation. Other aspects of the implementation (i.e. creation of the allocation tracker) are already thread-safe or are the responsibility of the boot services implementation.
PR also contains some minor style cleanup.
How This Was Tested
Verified boot on QEMU.
Integration Instructions
N/A