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2025-07-14sunrpc: reset rq_accept_statp when starting a new RPCJeff Layton
rq_accept_statp should point to the location of the accept_status in the reply. This field is not reset between RPCs so if svc_authenticate or pg_authenticate return SVC_DENIED without setting the pointer, it could result in the status being written to the wrong place. This pointer starts its lifetime as NULL. Reset it on every iteration so we get consistent behavior if this happens. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14sunrpc: remove SVC_SYSERRJeff Layton
Nothing returns this error code. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14sunrpc: fix handling of unknown auth status codesJeff Layton
In the case of an unknown error code from svc_authenticate or pg_authenticate, return AUTH_ERROR with a status of AUTH_FAILED. Also add the other auth_stat value from RFC 5531, and document all the status codes. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Simplify struct knfsd_fhChuck Lever
Compilers are allowed to insert padding and reorder the fields in a struct, so using a union of an array and a struct in struct knfsd_fh is not reliable. The position of elements in an array is more reliable. Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Access a knfsd_fh's fsid by pointerChuck Lever
I'm about to remove the union in struct knfsd_fh. First step is to add an accessor function for the file handle's fsid portion. Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14Revert "NFSD: Force all NFSv4.2 COPY requests to be synchronous"Chuck Lever
In the past several kernel releases, we've made NFSv4.2 async copy reliable: - The Linux NFS client and server now both implement and use the NFSv4.2 OFFLOAD_STATUS operation - The Linux NFS server keeps copy stateids around longer - The Linux NFS client and server now both implement referring call lists And resilient against DoS: - The Linux NFS server limits the number of concurrent async copy operations Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Avoid multiple -Wflex-array-member-not-at-end warningsGustavo A. R. Silva
Replace flexible-array member with a fixed-size array. With this changes, fix many instances of the following type of warnings: fs/nfsd/nfsfh.h:79:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] fs/nfsd/state.h:763:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] fs/nfsd/state.h:669:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] fs/nfsd/state.h:549:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] fs/nfsd/xdr4.h:705:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] fs/nfsd/xdr4.h:678:33: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: NeilBrown <neil@brown.name> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Use vfs_iocb_iter_write()Chuck Lever
Refactor: Enable the use of IOCB flags to control NFSD's individual write operations. This allows the eventual use of atomic, uncached, direct, or asynchronous writes. Suggested-by: NeilBrown <neil@brown.name> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: NeilBrown <neil@brown.name> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Use vfs_iocb_iter_read()Chuck Lever
Refactor: Enable the use of IOCB flags to control NFSD's individual read operations (when not using splice). This allows the eventual use of atomic, uncached, direct, or asynchronous reads. Suggested-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: NeilBrown <neil@brown.name> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Clean up kdoc for nfsd_open_local_fh()Chuck Lever
Sparse reports that the synopsis of nfsd_open_local_fh() does not match its kdoc comment. Introduced by commit e6f7e1487ab5 ("nfs_localio: simplify interface to nfsd for getting nfsd_file"). Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Clean up kdoc for nfsd_file_put_local()Chuck Lever
Sparse reports that the synopsis of nfsd_file_put_local() does not match its kdoc comment. Introduced by commit c25a89770d1f ("nfs_localio: change nfsd_file_put_local() to take a pointer to __rcu pointer") . Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Remove definition for trace_nfsd_ctl_maxconnChuck Lever
trace_nfsd_ctl_maxconn() was removed by commit a4b853f183a1 ("sunrpc: remove all connection limit configuration") but did not remove the event. Reported-by: Steven Rostedt <rostedt@goodmis.org> Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Remove definition for trace_nfsd_file_gc_recentChuck Lever
Event nfsd_file_gc_recent was added by commit 64912122a4f8 ("nfsd: filecache: introduce NFSD_FILE_RECENT") but never used. Reported-by: Steven Rostedt <rostedt@goodmis.org> Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Remove definitions for unused trace_nfsd_file_lru trace pointsChuck Lever
Events nfsd_file_lru_add_disposed and nfsd_file_lru_del_disposed were added by commit 4a0e73e635e3 ("NFSD: Leave open files out of the filecache LRU") but they were never used. Reported-by: Steven Rostedt <rostedt@goodmis.org> Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Remove definition for trace_nfsd_file_unhash_and_queueChuck Lever
trace_nfsd_file_unhash_and_queue() was removed by commit ac3a2585f018 ("nfsd: rework refcounting in filecache"). Reported-by: Steven Rostedt <rostedt@goodmis.org> Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14nfsd: Use correct error code when decoding extentsSergey Bashirov
Update error codes in decoding functions of block and scsi layout drivers to match the core nfsd code. NFS4ERR_EINVAL means that the server was able to decode the request, but the decoded values are invalid. Use NFS4ERR_BADXDR instead to indicate a decoding error. And ENOMEM is changed to nfs code NFS4ERR_DELAY. Signed-off-by: Sergey Bashirov <sergeybashirov@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Remove the cap on number of operations per NFSv4 COMPOUNDChuck Lever
This limit has always been a sanity check; in nearly all cases a large COMPOUND is a sign of a malfunctioning client. The only real limit on COMPOUND size and complexity is the size of NFSD's send and receive buffers. However, there are a few cases where a large COMPOUND is sane. For example, when a client implementation wants to walk down a long file pathname in a single round trip. A small risk is that now a client can construct a COMPOUND request that can keep a single nfsd thread busy for quite some time. Suggested-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Make nfsd_genl_rqstp::rq_ops array best-effortChuck Lever
To enable NFSD to handle NFSv4 COMPOUNDs of unrestricted size, resize the array in struct nfsd_genl_rqstp so it saves only up to 16 operations per COMPOUND. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Rename a function parameterChuck Lever
Clean up: A function parameter called "rqstp" typically refers to an object of type "struct svc_rqst", so it's confusing when such an parameter refers to a different struct type with field names that are very similar to svc_rqst. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: detect mismatch of file handle and delegation stateid in OPEN opDai Ngo
When the client sends an OPEN with claim type CLAIM_DELEG_CUR_FH or CLAIM_DELEGATION_CUR, the delegation stateid and the file handle must belong to the same file, otherwise return NFS4ERR_INVAL. Note that RFC8881, section 8.2.4, mandates the server to return NFS4ERR_BAD_STATEID if the selected table entry does not match the current filehandle. However returning NFS4ERR_BAD_STATEID in the OPEN causes the client to retry the operation and therefor get the client into a loop. To avoid this situation we return NFS4ERR_INVAL instead. Reported-by: Petro Pavlov <petro.pavlov@vastdata.com> Fixes: c44c5eeb2c02 ("[PATCH] nfsd4: add open state code for CLAIM_DELEGATE_CUR") Cc: stable@vger.kernel.org Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()Jeff Layton
Lei Lu recently reported that nfsd4_setclientid_confirm() did not check the return value from get_client_locked(). a SETCLIENTID_CONFIRM could race with a confirmed client expiring and fail to get a reference. That could later lead to a UAF. Fix this by getting a reference early in the case where there is an extant confirmed client. If that fails then treat it as if there were no confirmed client found at all. In the case where the unconfirmed client is expiring, just fail and return the result from get_client_locked(). Reported-by: lei lu <llfamsec@gmail.com> Closes: https://lore.kernel.org/linux-nfs/CAEBF3_b=UvqzNKdnfD_52L05Mqrqui9vZ2eFamgAbV0WG+FNWQ@mail.gmail.com/ Fixes: d20c11d86d8f ("nfsd: Protect session creation and client confirm using client_lock") Cc: stable@vger.kernel.org Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14nfsd: Change the type of ek_fsidtype from int to u8 and use kstrtou8Su Hui
The valid values for ek_fsidtype are actually 0-7 so it's better to change the type to u8. Also using kstrtou8() to relpace simple_strtoul(), kstrtou8() is safer and more suitable for u8. Suggested-by: NeilBrown <neil@brown.name> Signed-off-by: Su Hui <suhui@nfschina.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14sunrpc: new tracepoints around svc thread wakeupsJeff Layton
Convert the svc_wake_up tracepoint into svc_pool_thread_event class. Have it also record the pool id, and add new tracepoints for when the thread is already running and for when there are no idle threads. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14sunrpc: unexport csum_partial_copy_to_xdrChristoph Hellwig
csum_partial_copy_to_xdr is only used inside the sunrpc module, so remove the export. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14sunrpc: simplify xdr_partial_copy_from_skbChristoph Hellwig
csum_partial_copy_to_xdr can handle a checksumming and non-checksumming case and implements this using a callback, which leads to a lot of boilerplate code and indirect calls in the fast path. Switch to storing a need_checksum flag in struct xdr_skb_reader instead to remove the indirect call and simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14sunrpc: simplify xdr_init_encode_pagesChristoph Hellwig
The rqst argument to xdr_init_encode_pages is set to NULL by all callers, and pages is always set to buf->pages. Remove the two arguments and hardcode the assignments. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: release read access of nfs4_file when a write delegation is returnedDai Ngo
When a write delegation is returned, check if read access was added to nfs4_file when client opens file with WRONLY, and release it. Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-14NFSD: Offer write delegation for OPEN with OPEN4_SHARE_ACCESS_WRITEDai Ngo
RFC8881, section 9.1.2 says: "In the case of READ, the server may perform the corresponding check on the access mode, or it may choose to allow READ for OPEN4_SHARE_ACCESS_WRITE, to accommodate clients whose WRITE implementation may unavoidably do reads (e.g., due to buffer cache constraints)." and in section 10.4.1: "Similarly, when closing a file opened for OPEN4_SHARE_ACCESS_WRITE/ OPEN4_SHARE_ACCESS_BOTH and if an OPEN_DELEGATE_WRITE delegation is in effect" This patch allows READ using write delegation stateid granted on OPENs with OPEN4_SHARE_ACCESS_WRITE only, to accommodate clients whose WRITE implementation may unavoidably do (e.g., due to buffer cache constraints). For write delegation granted for OPEN with OPEN4_SHARE_ACCESS_WRITE a new nfsd_file and a struct file are allocated to use for reads. The nfsd_file is freed when the file is closed by release_all_access. Suggested-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-07-13Linux 6.16-rc6v6.16-rc6Linus Torvalds
2025-07-13Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Fixes for a few clk drivers and bindings: - Add a missing property to the Mediatek MT8188 clk binding to keep binding checks happy - Avoid an OOB by setting the correct number of parents in dispmix_csr_clk_dev_data - Allocate clk_hw structs early in probe to avoid an ordering issue where clk_parent_data points to an unallocated clk_hw when the child clk is registered before the parent clk in the SCMI clk driver * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: dt-bindings: clock: mediatek: Add #reset-cells property for MT8188 clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data clk: scmi: Handle case where child clocks are initialized before their parents
2025-07-13Merge tag 'x86_urgent_for_v6.16_rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Update Kirill's email address - Allow hugetlb PMD sharing only on 64-bit as it doesn't make a whole lotta sense on 32-bit - Add fixes for a misconfigured AMD Zen2 client which wasn't even supposed to run Linux * tag 'x86_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: MAINTAINERS: Update Kirill Shutemov's email address for TDX x86/mm: Disable hugetlb page table sharing on 32-bit x86/CPU/AMD: Disable INVLPGB on Zen2 x86/rdrand: Disable RDSEED on AMD Cyan Skillfish
2025-07-13Merge tag 'irq_urgent_for_v6.16_rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Borislav Petkov: - Fix a case of recursive locking in the MSI code - Fix a randconfig build failure in armada-370-xp irqchip * tag 'irq_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/irq-msi-lib: Fix build with PCI disabled PCI/MSI: Prevent recursive locking in pci_msix_write_tph_tag()
2025-07-13Merge tag 'perf_urgent_for_v6.16_rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fix from Borislav Petkov: - Prevent perf_sigtrap() from observing an exiting task and warning about it * tag 'perf_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Fix WARN in perf_sigtrap()
2025-07-12Merge tag 'mm-hotfixes-stable-2025-07-11-16-16' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "19 hotfixes. A whopping 16 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 14 are for MM. Three gdb-script fixes and a kallsyms build fix" * tag 'mm-hotfixes-stable-2025-07-11-16-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: Revert "sched/numa: add statistics of numa balance task" mm: fix the inaccurate memory statistics issue for users mm/damon: fix divide by zero in damon_get_intervals_score() samples/damon: fix damon sample mtier for start failure samples/damon: fix damon sample wsse for start failure samples/damon: fix damon sample prcl for start failure kasan: remove kasan_find_vm_area() to prevent possible deadlock scripts: gdb: vfs: support external dentry names mm/migrate: fix do_pages_stat in compat mode mm/damon/core: handle damon_call_control as normal under kdmond deactivation mm/rmap: fix potential out-of-bounds page table access during batched unmap mm/hugetlb: don't crash when allocating a folio if there are no resv scripts/gdb: de-reference per-CPU MCE interrupts scripts/gdb: fix interrupts.py after maple tree conversion maple_tree: fix mt_destroy_walk() on root leaf node mm/vmalloc: leave lazy MMU mode on PTE mapping error scripts/gdb: fix interrupts display after MCP on x86 lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users() kallsyms: fix build without execinfo
2025-07-12Merge tag 'erofs-for-6.16-rc6-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs Pull erofs fixes from Gao Xiang: "Fix for a cache aliasing issue by adding missing flush_dcache_folio(), which causes execution failures on some arm32 setups. Fix for large compressed fragments, which could be generated by -Eall-fragments option (but should be rare) and was rejected by mistake due to an on-disk hardening commit. The remaining ones are small fixes. Summary: - Address cache aliasing for mappable page cache folios - Allow readdir() to be interrupted - Fix large fragment handling which was errored out by mistake - Add missing tracepoints - Use memcpy_to_folio() to replace copy_to_iter() for inline data" * tag 'erofs-for-6.16-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: fix large fragment handling erofs: allow readdir() to be interrupted erofs: address D-cache aliasing erofs: use memcpy_to_folio() to replace copy_to_iter() erofs: fix to add missing tracepoint in erofs_read_folio() erofs: fix to add missing tracepoint in erofs_readahead()
2025-07-12Merge tag 'bcachefs-2025-07-11' of git://evilpiepirate.org/bcachefsLinus Torvalds
Pull bcachefs fixes from Kent Overstreet. * tag 'bcachefs-2025-07-11' of git://evilpiepirate.org/bcachefs: bcachefs: Don't set BCH_FS_error on transaction restart bcachefs: Fix additional misalignment in journal space calculations bcachefs: Don't schedule non persistent passes persistently bcachefs: Fix bch2_btree_transactions_read() synchronization bcachefs: btree read retry fixes bcachefs: btree node scan no longer uses btree cache bcachefs: Tweak btree cache helpers for use by btree node scan bcachefs: Fix btree for nonexistent tree depth bcachefs: Fix bch2_io_failures_to_text() bcachefs: bch2_fpunch_snapshot()
2025-07-12Merge tag 'v6.16-rc5-ksmbd-server-fixes' of git://git.samba.org/ksmbdLinus Torvalds
Pull smb server fixes from Steve French: - fix use after free in lease break - small fix for freeing rdma transport (fixes missing logging of cm_qp_destroy) - fix write count leak * tag 'v6.16-rc5-ksmbd-server-fixes' of git://git.samba.org/ksmbd: ksmbd: fix potential use-after-free in oplock/lease break ack ksmbd: fix a mount write count leak in ksmbd_vfs_kern_path_locked() smb: server: make use of rdma_destroy_qp()
2025-07-11Merge tag 'pci-v6.16-fixes-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull PCI fixes from Bjorn Helgaas: - Track apple Root Ports explicitly and look up the driver data from the struct device instead of using dev->driver_data, which is used by pci_host_common_init() for the generic host bridge pointer (Marc Zyngier) - Set dev->driver_data before pci_host_common_init() calls gen_pci_init() because some drivers need it to set up ECAM mappings; this fixes a regression on MicroChip MPFS Icicle (Geert Uytterhoeven) - Revert the now-unnecessary use of ECAM pci_config_window.priv to store a copy of dev->driver_data (Marc Zyngier) * tag 'pci-v6.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: Revert "PCI: ecam: Allow cfg->priv to be pre-populated from the root port device" PCI: host-generic: Set driver_data before calling gen_pci_init() PCI: apple: Add tracking of probed root ports
2025-07-11Merge tag 'drm-fixes-2025-07-12' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds
Pull drm fixes from Simona Vetter: "Cross-subsystem Changes: - agp/amd64 binding dmesg noise regression fix Core Changes: - fix race in gem_handle_create_tail - fixup handle_count fb refcount regression from -rc5, popular with reports ... - call rust dtor for drm_device release Driver Changes: - nouveau: magic 50ms suspend fix, acpi leak fix - tegra: dma api error in nvdec - pvr: fix device reset - habanalbs maintainer update - intel display: fix some dsi mipi sequences - xe fixes: SRIOV fixes, small GuC fixes, disable indirect ring due to issues, compression fix for fragmented BO, doc update * tag 'drm-fixes-2025-07-12' of https://gitlab.freedesktop.org/drm/kernel: (22 commits) drm/xe/guc: Default log level to non-verbose drm/xe/bmg: Don't use WA 16023588340 and 22019338487 on VF drm/xe/guc: Recommend GuC v70.46.2 for BMG, LNL, DG2 drm/xe/pm: Correct comment of xe_pm_set_vram_threshold() drm/xe: Release runtime pm for error path of xe_devcoredump_read() drm/xe/pm: Restore display pm if there is error after display suspend drm/i915/bios: Apply vlv_fixup_mipi_sequences() to v2 mipi-sequences too drm/gem: Fix race in drm_gem_handle_create_tail() drm/framebuffer: Acquire internal references on GEM handles agp/amd64: Check AGP Capability before binding to unsupported devices drm/xe/bmg: fix compressed VRAM handling Revert "drm/xe/xe2: Enable Indirect Ring State support for Xe2" drm/xe: Allocate PF queue size on pow2 boundary drm/xe/pf: Clear all LMTT pages on alloc drm/nouveau/gsp: fix potential leak of memory used during acpi init rust: drm: remove unnecessary imports MAINTAINERS: Change habanalabs maintainer drm/imagination: Fix kernel crash when hard resetting the GPU drm/tegra: nvdec: Fix dma_alloc_coherent error check rust: drm: device: drop_in_place() the drm::Device in release() ...
2025-07-11Revert "eventpoll: Fix priority inversion problem"Linus Torvalds
This reverts commit 8c44dac8add7503c345c0f6c7962e4863b88ba42. I haven't figured out what the actual bug in this commit is, but I did spend a lot of time chasing it down and eventually succeeded in bisecting it down to this. For some reason, this eventpoll commit ends up causing delays and stuck user space processes, but it only happens on one of my machines, and only during early boot or during the flurry of initial activity when logging in. I must be triggering some very subtle timing issue, but once I figured out the behavior pattern that made it reasonably reliable to trigger, it did bisect right to this, and reverting the commit fixes the problem. Of course, that was only after I had failed at bisecting it several times, and had flailed around blaming both the drm people and the netlink people for the odd problems. The most obvious of which happened at the time of the first graphical login (the most common symptom being that some gnome app aborted due to a 30s timeout, often leading to the whole session then failing if it was some critical component like gnome-shell or similar). Acked-by: Nam Cao <namcao@linutronix.de> Cc: Frederic Weisbecker <frederic@kernel.org> Cc: Valentin Schneider <vschneid@redhat.com> Cc: Christian Brauner <brauner@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-07-12erofs: fix large fragment handlingGao Xiang
Fragments aren't limited by Z_EROFS_PCLUSTER_MAX_DSIZE. However, if a fragment's logical length is larger than Z_EROFS_PCLUSTER_MAX_DSIZE but the fragment is not the whole inode, it currently returns -EOPNOTSUPP because m_flags has the wrong EROFS_MAP_ENCODED flag set. It is not intended by design but should be rare, as it can only be reproduced by mkfs with `-Eall-fragments` in a specific case. Let's normalize fragment m_flags using the new EROFS_MAP_FRAGMENT. Reported-by: Axel Fontaine <axel@axelfontaine.com> Closes: https://github.com/erofs/erofs-utils/issues/23 Fixes: 7c3ca1838a78 ("erofs: restrict pcluster size limitations") Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20250711195826.3601157-1-hsiangkao@linux.alibaba.com
2025-07-11Merge tag 'block-6.16-20250710' of git://git.kernel.dk/linuxLinus Torvalds
Pull block fixes from Jens Axboe: - MD changes via Yu: - fix UAF due to stack memory used for bio mempool (Jinchao) - fix raid10/raid1 nowait IO error path (Nigel and Qixing) - fix kernel crash from reading bitmap sysfs entry (Håkon) - Fix for a UAF in the nbd connect error path - Fix for blocksize being bigger than pagesize, if THP isn't enabled * tag 'block-6.16-20250710' of git://git.kernel.dk/linux: block: reject bs > ps block devices when THP is disabled nbd: fix uaf in nbd_genl_connect() error path md/md-bitmap: fix GPF in bitmap_get_stats() md/raid1,raid10: strip REQ_NOWAIT from member bios raid10: cleanup memleak at raid10_make_request md/raid1: Fix stack memory use after return in raid1_reshape
2025-07-11Merge tag 'io_uring-6.16-20250710' of git://git.kernel.dk/linuxLinus Torvalds
Pull io_uring fixes from Jens Axboe: - Remove a pointless warning in the zcrx code - Fix for MSG_RING commands, where the allocated io_kiocb needs to be freed under RCU as well - Revert the work-around we had in place for the anon inodes pretending to be regular files. Since that got reworked upstream, the work-around is no longer needed * tag 'io_uring-6.16-20250710' of git://git.kernel.dk/linux: Revert "io_uring: gate REQ_F_ISREG on !S_ANON_INODE as well" io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU io_uring/zcrx: fix pp destruction warnings
2025-07-11Merge tag 'net-6.16-rc6-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull more networking fixes from Jakub Kicinski "Big chunk of fixes for WiFi, Johannes says probably the last for the release. The Netlink fixes (on top of the tree) restore operation of iw (WiFi CLI) which uses sillily small recv buffer, and is the reason for this 'emergency PR'. The GRE multicast fix also stands out among the user-visible regressions. Current release - fix to a fix: - netlink: make sure we always allow at least one skb to be queued, even if the recvbuf is (mis)configured to be tiny Previous releases - regressions: - gre: fix IPv6 multicast route creation Previous releases - always broken: - wifi: prevent A-MSDU attacks in mesh networks - wifi: cfg80211: fix S1G beacon head validation and detection - wifi: mac80211: - always clear frame buffer to prevent stack leak in cases which hit a WARN() - fix monitor interface in device restart - wifi: mwifiex: discard erroneous disassoc frames on STA interface - wifi: mt76: - prevent null-deref in mt7925_sta_set_decap_offload() - add missing RCU annotations, and fix sleep in atomic - fix decapsulation offload - fixes for scanning - phy: microchip: improve link establishment and reset handling - eth: mlx5e: fix race between DIM disable and net_dim() - bnxt_en: correct DMA unmap len for XDP_REDIRECT" * tag 'net-6.16-rc6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (44 commits) netlink: make sure we allow at least one dump skb netlink: Fix rmem check in netlink_broadcast_deliver(). bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT bnxt_en: Flush FW trace before copying to the coredump bnxt_en: Fix DCB ETS validation net: ll_temac: Fix missing tx_pending check in ethtools_set_ringparam() net/mlx5e: Add new prio for promiscuous mode net/mlx5e: Fix race between DIM disable and net_dim() net/mlx5: Reset bw_share field when changing a node's parent can: m_can: m_can_handle_lost_msg(): downgrade msg lost in rx message to debug level selftests: net: lib: fix shift count out of range selftests: Add IPv6 multicast route generation tests for GRE devices. gre: Fix IPv6 multicast route creation. net: phy: microchip: limit 100M workaround to link-down events on LAN88xx net: phy: microchip: Use genphy_soft_reset() to purge stale LPA bits ibmvnic: Fix hardcoded NUM_RX_STATS/NUM_TX_STATS with dynamic sizeof net: appletalk: Fix device refcount leak in atrtr_create() netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto() wifi: mac80211: add the virtual monitor after reconfig complete wifi: mac80211: always initialize sdata::key_list ...
2025-07-11Merge tag 'gpio-fixes-for-v6.16-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio fixes from Bartosz Golaszewski: - fix performance regression when setting values of multiple GPIO lines at once - make sure the GPIO OF xlate code doesn't end up passing an uninitialized local variable to GPIO core - update MAINTAINERS * tag 'gpio-fixes-for-v6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: MAINTAINERS: remove bouncing address for Nandor Han gpio: of: initialize local variable passed to the .of_xlate() callback gpiolib: fix performance regression when using gpio_chip_get_multiple()
2025-07-11Merge tag 'pm-6.16-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix a coding mistake in a previous fix related to system suspend and hibernation merged recently" * tag 'pm-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: sleep: Call pm_restore_gfp_mask() after dpm_resume()
2025-07-11Merge tag 'dma-mapping-6.16-2025-07-11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping fix from Marek Szyprowski: - small fix relevant to arm64 server and custom CMA configuration (Feng Tang) * tag 'dma-mapping-6.16-2025-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma-contiguous: hornor the cma address limit setup by user
2025-07-11netlink: make sure we allow at least one dump skbJakub Kicinski
Commit under Fixes tightened up the memory accounting for Netlink sockets. Looks like the accounting is too strict for some existing use cases, Marek reported issues with nl80211 / WiFi iw CLI. To reduce number of iterations Netlink dumps try to allocate messages based on the size of the buffer passed to previous recvmsg() calls. If user space uses a larger buffer in recvmsg() than sk_rcvbuf we will allocate an skb we won't be able to queue. Make sure we always allow at least one skb to be queued. Same workaround is already present in netlink_attachskb(). Alternative would be to cap the allocation size to rcvbuf - rmem_alloc but as I said, the workaround is already present in other places. Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/9794af18-4905-46c6-b12c-365ea2f05858@samsung.com Fixes: ae8f160e7eb2 ("netlink: Fix wraparounds of sk->sk_rmem_alloc.") Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711001121.3649033-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-11netlink: Fix rmem check in netlink_broadcast_deliver().Kuniyuki Iwashima
We need to allow queuing at least one skb even when skb is larger than sk->sk_rcvbuf. The cited commit made a mistake while converting a condition in netlink_broadcast_deliver(). Let's correct the rmem check for the allow-one-skb rule. Fixes: ae8f160e7eb24 ("netlink: Fix wraparounds of sk->sk_rmem_alloc.") Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250711053208.2965945-1-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-11Merge branch 'bnxt_en-3-bug-fixes'Jakub Kicinski
Michael Chan says: ==================== bnxt_en: 3 bug fixes The first one fixes a possible failure when setting DCB ETS. The second one fixes the ethtool coredump (-W 2) not containing all the FW traces. The third one fixes the DMA unmap length when transmitting XDP_REDIRECT packets. ==================== Link: https://patch.msgid.link/20250710213938.1959625-1-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>