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Pull ext4 fixes from Ted Ts'o: - Update the MAINTAINERS file to add reviewers for the ext4 file system - Add a test issue an ext4 warning (not a WARN_ON) if there are still dirty pages attached to an evicted inode. - Fix a number of Syzkaller issues - Fix memory leaks on error paths - Replace some BUG and WARN with EFSCORRUPTED reporting - Fix a potential crash when disabling discard via remount followed by an immediate unmount. (Found by Sashiko) - Fix a corner case which could lead to allocating blocks for an indirect-mapped inode block numbers > 2**32 - Fix a race when reallocating a freed inode that could result in a deadlock - Fix a user-after-free in update_super_work when racing with umount - Fix build issues when trying to build ext4's kunit tests as a module - Fix a bug where ext4_split_extent_zeroout() could fail to pass back an error from ext4_ext_dirty() - Avoid allocating blocks from a corrupted block group in ext4_mb_find_by_goal() - Fix a percpu_counters list corruption BUG triggered by an ext4 extents kunit - Fix a potetial crash caused by the fast commit flush path potentially accessing the jinode structure before it is fully initialized - Fix fsync(2) in no-journal mode to make sure the dirtied inode is write to storage - Fix a bug when in no-journal mode, when ext4 tries to avoid using recently deleted inodes, if lazy itable initialization is enabled, can lead to an unitialized inode getting skipped and triggering an e2fsck complaint - Fix journal credit calculation when setting an xattr when both the encryption and ea_inode feeatures are enabled - Fix corner cases which could result in stale xarray tags after writeback - Fix generic/475 failures caused by ENOSPC errors while creating a symlink when the system crashes resulting to a file system inconsistency when replaying the fast commit journal * tag 'ext4_for_linus-7.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (27 commits) ext4: always drain queued discard work in ext4_mb_release() ext4: handle wraparound when searching for blocks for indirect mapped blocks ext4: skip split extent recovery on corruption ext4: fix iloc.bh leak in ext4_fc_replay_inode() error paths ext4: fix deadlock on inode reallocation ext4: fix use-after-free in update_super_work when racing with umount ext4: fix the might_sleep() warnings in kvfree() ext4: reject mount if bigalloc with s_first_data_block != 0 ext4: fix extents-test.c is not compiled when EXT4_KUNIT_TESTS=M ext4: fix mballoc-test.c is not compiled when EXT4_KUNIT_TESTS=M ext4: introduce EXPORT_SYMBOL_FOR_EXT4_TEST() helper jbd2: gracefully abort on checkpointing state corruptions ext4: avoid infinite loops caused by residual data ext4: validate p_idx bounds in ext4_ext_correct_indexes ext4: test if inode's all dirty pages are submitted to disk ext4: minor fix for ext4_split_extent_zeroout() ext4: avoid allocate block from corrupted group in ext4_mb_find_by_goal() ext4: kunit: extents-test: lix percpu_counters list corruption ext4: publish jinode after initialization ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio ...
Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. Quick Start ----------- * Report a bug: See Documentation/admin-guide/reporting-issues.rst * Get the latest kernel: https://kernel.org * Build the kernel: See Documentation/admin-guide/quickly-build-trimmed-linux.rst * Join the community: https://lore.kernel.org/ Essential Documentation ----------------------- All users should be familiar with: * Building requirements: Documentation/process/changes.rst * Code of Conduct: Documentation/process/code-of-conduct.rst * License: See COPYING Documentation can be built with make htmldocs or viewed online at: https://www.kernel.org/doc/html/latest/ Who Are You? ============ Find your role below: * New Kernel Developer - Getting started with kernel development * Academic Researcher - Studying kernel internals and architecture * Security Expert - Hardening and vulnerability analysis * Backport/Maintenance Engineer - Maintaining stable kernels * System Administrator - Configuring and troubleshooting * Maintainer - Leading subsystems and reviewing patches * Hardware Vendor - Writing drivers for new hardware * Distribution Maintainer - Packaging kernels for distros * AI Coding Assistant - LLMs and AI-powered development tools For Specific Users ================== New Kernel Developer -------------------- Welcome! Start your kernel development journey here: * Getting Started: Documentation/process/development-process.rst * Your First Patch: Documentation/process/submitting-patches.rst * Coding Style: Documentation/process/coding-style.rst * Build System: Documentation/kbuild/index.rst * Development Tools: Documentation/dev-tools/index.rst * Kernel Hacking Guide: Documentation/kernel-hacking/hacking.rst * Core APIs: Documentation/core-api/index.rst Academic Researcher ------------------- Explore the kernel's architecture and internals: * Researcher Guidelines: Documentation/process/researcher-guidelines.rst * Memory Management: Documentation/mm/index.rst * Scheduler: Documentation/scheduler/index.rst * Networking Stack: Documentation/networking/index.rst * Filesystems: Documentation/filesystems/index.rst * RCU (Read-Copy Update): Documentation/RCU/index.rst * Locking Primitives: Documentation/locking/index.rst * Power Management: Documentation/power/index.rst Security Expert --------------- Security documentation and hardening guides: * Security Documentation: Documentation/security/index.rst * LSM Development: Documentation/security/lsm-development.rst * Self Protection: Documentation/security/self-protection.rst * Reporting Vulnerabilities: Documentation/process/security-bugs.rst * CVE Procedures: Documentation/process/cve.rst * Embargoed Hardware Issues: Documentation/process/embargoed-hardware-issues.rst * Security Features: Documentation/userspace-api/seccomp_filter.rst Backport/Maintenance Engineer ----------------------------- Maintain and stabilize kernel versions: * Stable Kernel Rules: Documentation/process/stable-kernel-rules.rst * Backporting Guide: Documentation/process/backporting.rst * Applying Patches: Documentation/process/applying-patches.rst * Subsystem Profile: Documentation/maintainer/maintainer-entry-profile.rst * Git for Maintainers: Documentation/maintainer/configure-git.rst System Administrator -------------------- Configure, tune, and troubleshoot Linux systems: * Admin Guide: Documentation/admin-guide/index.rst * Kernel Parameters: Documentation/admin-guide/kernel-parameters.rst * Sysctl Tuning: Documentation/admin-guide/sysctl/index.rst * Tracing/Debugging: Documentation/trace/index.rst * Performance Security: Documentation/admin-guide/perf-security.rst * Hardware Monitoring: Documentation/hwmon/index.rst Maintainer ---------- Lead kernel subsystems and manage contributions: * Maintainer Handbook: Documentation/maintainer/index.rst * Pull Requests: Documentation/maintainer/pull-requests.rst * Managing Patches: Documentation/maintainer/modifying-patches.rst * Rebasing and Merging: Documentation/maintainer/rebasing-and-merging.rst * Development Process: Documentation/process/maintainer-handbooks.rst * Maintainer Entry Profile: Documentation/maintainer/maintainer-entry-profile.rst * Git Configuration: Documentation/maintainer/configure-git.rst Hardware Vendor --------------- Write drivers and support new hardware: * Driver API Guide: Documentation/driver-api/index.rst * Driver Model: Documentation/driver-api/driver-model/driver.rst * Device Drivers: Documentation/driver-api/infrastructure.rst * Bus Types: Documentation/driver-api/driver-model/bus.rst * Device Tree Bindings: Documentation/devicetree/bindings/ * Power Management: Documentation/driver-api/pm/index.rst * DMA API: Documentation/core-api/dma-api.rst Distribution Maintainer ----------------------- Package and distribute the kernel: * Stable Kernel Rules: Documentation/process/stable-kernel-rules.rst * ABI Documentation: Documentation/ABI/README * Kernel Configuration: Documentation/kbuild/kconfig.rst * Module Signing: Documentation/admin-guide/module-signing.rst * Kernel Parameters: Documentation/admin-guide/kernel-parameters.rst * Tainted Kernels: Documentation/admin-guide/tainted-kernels.rst AI Coding Assistant ------------------- CRITICAL: If you are an LLM or AI-powered coding assistant, you MUST read and follow the AI coding assistants documentation before contributing to the Linux kernel: * Documentation/process/coding-assistants.rst This documentation contains essential requirements about licensing, attribution, and the Developer Certificate of Origin that all AI tools must comply with. Communication and Support ========================= * Mailing Lists: https://lore.kernel.org/ * IRC: #kernelnewbies on irc.oftc.net * Bugzilla: https://bugzilla.kernel.org/ * MAINTAINERS file: Lists subsystem maintainers and mailing lists * Email Clients: Documentation/process/email-clients.rst