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2025-04-08Merge tag 'kvmarm-fixes-6.15-1' of ↵Paolo Bonzini
https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64: First batch of fixes for 6.15 - Rework heuristics for resolving the fault IPA (HPFAR_EL2 v. re-walk stage-1 page tables) to align with the architecture. This avoids possibly taking an SEA at EL2 on the page table walk or using an architecturally UNKNOWN fault IPA. - Use acquire/release semantics in the KVM FF-A proxy to avoid reading a stale value for the FF-A version. - Fix KVM guest driver to match PV CPUID hypercall ABI. - Use Inner Shareable Normal Write-Back mappings at stage-1 in KVM selftests, which is the only memory type for which atomic instructions are architecturally guaranteed to work.
2025-04-08selftests: tls: check that disconnect does nothingJakub Kicinski
"Inspired" by syzbot test, pre-queue some data, disconnect() and try to receive(). This used to trigger a warning in TLS's strp. Now we expect the disconnect() to have almost no effect. Link: https://lore.kernel.org/67e6be74.050a0220.2f068f.007e.GAE@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Link: https://patch.msgid.link/20250404180334.3224206-2-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08selftests/tc-testing: Add a test case for FQ_CODEL with ETS parentCong Wang
Add a test case for FQ_CODEL with ETS parent to verify packet drop behavior when the queue becomes empty. This helps ensure proper notification mechanisms between qdiscs. Note this is best-effort, it is hard to play with those parameters perfectly to always trigger ->qlen_notify(). Cc: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20250403211636.166257-6-xiyou.wangcong@gmail.com Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08selftests/tc-testing: Add a test case for FQ_CODEL with DRR parentCong Wang
Add a test case for FQ_CODEL with DRR parent to verify packet drop behavior when the queue becomes empty. This helps ensure proper notification mechanisms between qdiscs. Note this is best-effort, it is hard to play with those parameters perfectly to always trigger ->qlen_notify(). Cc: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20250403211636.166257-5-xiyou.wangcong@gmail.com Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08selftests/tc-testing: Add a test case for FQ_CODEL with HFSC parentCong Wang
Add a test case for FQ_CODEL with HFSC parent to verify packet drop behavior when the queue becomes empty. This helps ensure proper notification mechanisms between qdiscs. Note this is best-effort, it is hard to play with those parameters perfectly to always trigger ->qlen_notify(). Cc: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20250403211636.166257-4-xiyou.wangcong@gmail.com Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08selftests/tc-testing: Add a test case for FQ_CODEL with QFQ parentCong Wang
Add a test case for FQ_CODEL with QFQ parent to verify packet drop behavior when the queue becomes empty. This helps ensure proper notification mechanisms between qdiscs. Note this is best-effort, it is hard to play with those parameters perfectly to always trigger ->qlen_notify(). Cc: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20250403211636.166257-3-xiyou.wangcong@gmail.com Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08selftests/tc-testing: Add a test case for FQ_CODEL with HTB parentCong Wang
Add a test case for FQ_CODEL with HTB parent to verify packet drop behavior when the queue becomes empty. This helps ensure proper notification mechanisms between qdiscs. Note this is best-effort, it is hard to play with those parameters perfectly to always trigger ->qlen_notify(). Cc: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Victor Nogueira <victor@mojatatu.com> Link: https://patch.msgid.link/20250403211636.166257-2-xiyou.wangcong@gmail.com Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08objtool, xen: Fix INSN_SYSCALL / INSN_SYSRET semanticsJosh Poimboeuf
Objtool uses an arbitrary rule for INSN_SYSCALL and INSN_SYSRET that almost works by accident: if it's in a function, control flow continues after the instruction, otherwise it terminates. That behavior should instead be based on the semantics of the underlying instruction. Change INSN_SYSCALL to always preserve control flow and INSN_SYSRET to always terminate it. The changed semantic for INSN_SYSCALL requires a tweak to the !CONFIG_IA32_EMULATION version of xen_entry_SYSCALL_compat(). In Xen, SYSCALL is a hypercall which usually returns. But in this case it's a hypercall to IRET which doesn't return. Add UD2 to tell objtool to terminate control flow, and to prevent undefined behavior at runtime. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Juergen Gross <jgross@suse.com> # for the Xen part Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/19453dfe9a0431b7f016e9dc16d031cad3812a50.1744095216.git.jpoimboe@kernel.org
2025-04-08objtool: Stop UNRET validation on UD2Josh Poimboeuf
In preparation for simplifying INSN_SYSCALL, make validate_unret() terminate control flow on UD2 just like validate_branch() already does. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/ce841269e7e28c8b7f32064464a9821034d724ff.1744095216.git.jpoimboe@kernel.org
2025-04-08objtool: Split INSN_CONTEXT_SWITCH into INSN_SYSCALL and INSN_SYSRETJosh Poimboeuf
INSN_CONTEXT_SWITCH is ambiguous. It can represent both call semantics (SYSCALL, SYSENTER) and return semantics (SYSRET, IRET, RETS, RETU). Those differ significantly: calls preserve control flow whereas returns terminate it. Objtool uses an arbitrary rule for INSN_CONTEXT_SWITCH that almost works by accident: if in a function, keep going; otherwise stop. It should instead be based on the semantics of the underlying instruction. In preparation for improving that, split INSN_CONTEXT_SWITCH into INSN_SYCALL and INSN_SYSRET. No functional change. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/19a76c74d2c051d3bc9a775823cafc65ad267a7a.1744095216.git.jpoimboe@kernel.org
2025-04-08objtool: Fix INSN_CONTEXT_SWITCH handling in validate_unret()Josh Poimboeuf
The !CONFIG_IA32_EMULATION version of xen_entry_SYSCALL_compat() ends with a SYSCALL instruction which is classified by objtool as INSN_CONTEXT_SWITCH. Unlike validate_branch(), validate_unret() doesn't consider INSN_CONTEXT_SWITCH in a non-function to be a dead end, so it keeps going past the end of xen_entry_SYSCALL_compat(), resulting in the following warning: vmlinux.o: warning: objtool: xen_reschedule_interrupt+0x2a: RET before UNTRAIN Fix that by adding INSN_CONTEXT_SWITCH handling to validate_unret() to match what validate_branch() is already doing. Fixes: a09a6e2399ba ("objtool: Add entry UNRET validation") Reported-by: Andrew Cooper <andrew.cooper3@citrix.com> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/f5eda46fd09f15b1f5cde3d9ae3b92b958342add.1744095216.git.jpoimboe@kernel.org
2025-04-07selftests: drv-net: test random value for hds-threshTaehee Yoo
hds.py has been testing 0(set_hds_thresh_zero()), MAX(set_hds_thresh_max()), GT(set_hds_thresh_gt()) values for hds-thresh. However if a hds-thresh value was already 0, set_hds_thresh_zero() can't test properly. So, it tests random value first and then tests 0, MAX, GT values. Testing bnxt: TAP version 13 1..13 ok 1 hds.get_hds ok 2 hds.get_hds_thresh ok 3 hds.set_hds_disable # SKIP disabling of HDS not supported by the device ok 4 hds.set_hds_enable ok 5 hds.set_hds_thresh_random ok 6 hds.set_hds_thresh_zero ok 7 hds.set_hds_thresh_max ok 8 hds.set_hds_thresh_gt ok 9 hds.set_xdp ok 10 hds.enabled_set_xdp ok 11 hds.ioctl ok 12 hds.ioctl_set_xdp ok 13 hds.ioctl_enabled_set_xdp # Totals: pass:12 fail:0 xfail:0 xpass:0 skip:1 error:0 Testing lo: TAP version 13 1..13 ok 1 hds.get_hds # SKIP tcp-data-split not supported by device ok 2 hds.get_hds_thresh # SKIP hds-thresh not supported by device ok 3 hds.set_hds_disable # SKIP ring-set not supported by the device ok 4 hds.set_hds_enable # SKIP ring-set not supported by the device ok 5 hds.set_hds_thresh_random # SKIP hds-thresh not supported by device ok 6 hds.set_hds_thresh_zero # SKIP ring-set not supported by the device ok 7 hds.set_hds_thresh_max # SKIP hds-thresh not supported by device ok 8 hds.set_hds_thresh_gt # SKIP hds-thresh not supported by device ok 9 hds.set_xdp # SKIP tcp-data-split not supported by device ok 10 hds.enabled_set_xdp # SKIP tcp-data-split not supported by device ok 11 hds.ioctl # SKIP tcp-data-split not supported by device ok 12 hds.ioctl_set_xdp # SKIP tcp-data-split not supported by device ok 13 hds.ioctl_enabled_set_xdp # SKIP tcp-data-split not supported by device # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:13 error:0 Signed-off-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20250404122126.1555648-3-ap420073@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-07memblock tests: Fix mutex related build errorMasami Hiramatsu (Google)
Fix mutex and free_reserved_area() related build errors which have been introduced by commit 74e2498ccf7b ("mm/memblock: Add reserved memory release function"). Fixes: 74e2498ccf7b ("mm/memblock: Add reserved memory release function") Reported-by: Wei Yang <richard.weiyang@gmail.com> Closes: https://lore.kernel.org/all/20250405023018.g2ae52nrz2757b3n@master/ Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Link: https://lore.kernel.org/r/174399023133.47537.7375975856054461445.stgit@devnote2 Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
2025-04-06tools/include: make uapi/linux/types.h usable from assemblyThomas Weißschuh
The "real" linux/types.h UAPI header gracefully degrades to a NOOP when included from assembly code. Mirror this behaviour in the tools/ variant. Test for __ASSEMBLER__ over __ASSEMBLY__ as the former is provided by the toolchain automatically. Reported-by: Mark Brown <broonie@kernel.org> Closes: https://lore.kernel.org/lkml/af553c62-ca2f-4956-932c-dd6e3a126f58@sirena.org.uk/ Fixes: c9fbaa879508 ("selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers") Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20250321-uapi-consistency-v1-1-439070118dc0@linutronix.de Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-06Merge tag 'turbostat-2025.05.06' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux Pull turbostat updates from Len Brown: - support up to 8192 processors - add cpuidle governor debug telemetry, disabled by default - update default output to exclude cpuidle invocation counts - bug fixes * tag 'turbostat-2025.05.06' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: v2025.05.06 tools/power turbostat: disable "cpuidle" invocation counters, by default tools/power turbostat: re-factor sysfs code tools/power turbostat: Restore GFX sysfs fflush() call tools/power turbostat: Document GNR UncMHz domain convention tools/power turbostat: report CoreThr per measurement interval tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192 tools/power turbostat: Add idle governor statistics reporting tools/power turbostat: Fix names matching tools/power turbostat: Allow Zero return value for some RAPL registers tools/power turbostat: Clustered Uncore MHz counters should honor show/hide options
2025-04-06tools/power turbostat: v2025.05.06Len Brown
Support up to 8192 processors Add cpuidle governor debug telemetry, disabled by default Update default output to exclude cpuidle invocation counts Bug fixes Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-06tools/power turbostat: disable "cpuidle" invocation counters, by defaultLen Brown
Create "pct_idle" counter group, the sofware notion of residency so it can now be singled out, independent of other counter groups. Create "cpuidle" group, the cpuidle invocation counts. Disable "cpuidle", by default. Create "swidle" = "cpuidle" + "pct_idle". Undocument "sysfs", the old name for "swidle", but keep it working for backwards compatibilty. Create "hwidle", all the HW idle counters Modify "idle", enabled by default "idle" = "hwidle" + "pct_idle" (and now excludes "cpuidle") Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-06KVM: arm64: selftests: Explicitly set the page attrs to Inner-ShareableRaghavendra Rao Ananta
Atomic instructions such as 'ldset' in the guest have been observed to cause an EL1 data abort with FSC 0x35 (IMPLEMENTATION DEFINED fault (Unsupported Exclusive or Atomic access)) on Neoverse-N3. Per DDI0487L.a B2.2.6, atomic instructions are only architecturally guaranteed for Inner/Outer Shareable Normal Write-Back memory. For anything else the behavior is IMPLEMENTATION DEFINED and can lose atomicity, or, in this case, generate an abort. It would appear that selftests sets up the stage-1 mappings as Non Shareable, leading to the observed abort. Explicitly set the Shareability field to Inner Shareable for non-LPA2 page tables. Note that for the LPA2 page table format, translations for cacheable memory inherit the shareability attribute of the PTW, i.e. TCR_ELx.SH{0,1}. Suggested-by: Oliver Upton <oupton@google.com> Signed-off-by: Raghavendra Rao Ananta <rananta@google.com> Link: https://lore.kernel.org/r/20250405001042.1470552-3-rananta@google.com [oliver: Rephrase changelog] Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-04-06KVM: arm64: selftests: Introduce and use hardware-definition macrosRaghavendra Rao Ananta
The kvm selftest library for arm64 currently configures the hardware fields, such as shift and mask in the page-table entries and registers, directly with numbers. While it add comments at places, it's better to rewrite them with appropriate macros to improve the readability and reduce the risk of errors. Hence, introduce macros to define the hardware fields and use them in the arm64 processor library. Most of the definitions are primary copied from the Linux's header, arch/arm64/include/asm/pgtable-hwdef.h. No functional change intended. Suggested-by: Oliver Upton <oupton@google.com> Signed-off-by: Raghavendra Rao Ananta <rananta@google.com> Link: https://lore.kernel.org/r/20250405001042.1470552-2-rananta@google.com Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-04-06tools/power turbostat: re-factor sysfs codeLen Brown
Probe cpuidle "sysfs" residency and counts separately, since soon we will make one disabled on, and the other disabled off. Clarify that some BIC (build-in-counters) are actually "groups". since we're about to re-name some of those groups. no functional change. Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-06tools/power turbostat: Restore GFX sysfs fflush() callZhang Rui
Do fflush() to discard the buffered data, before each read of the graphics sysfs knobs. Fixes: ba99a4fc8c24 ("tools/power turbostat: Remove unnecessary fflush() call") Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-06tools/power turbostat: Document GNR UncMHz domain conventionLen Brown
Document that on Intel Granite Rapids Systems, Uncore domains 0-2 are CPU domains, and uncore domains 3-4 are IO domains. Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-06tools/power turbostat: report CoreThr per measurement intervalLen Brown
The CoreThr column displays total thermal throttling events since boot time. Change it to report events during the measurement interval. This is more useful for showing a user the current conditions. Total events since boot time are still available to the user via /sys/devices/system/cpu/cpu*/thermal_throttle/* Document CoreThr on turbostat.8 Fixes: eae97e053fe30 ("turbostat: Support thermal throttle count print") Reported-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Cc: Chen Yu <yu.c.chen@intel.com>
2025-04-06tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192Justin Ernst
On systems with >= 1024 cpus (in my case 1152), turbostat fails with the error output: "turbostat: /sys/fs/cgroup/cpuset.cpus.effective: cpu str malformat 0-1151" A similar error appears with the use of turbostat --cpu when the inputted cpu range contains a cpu number >= 1024: # turbostat -c 1100-1151 "--cpu 1100-1151" malformed ... Both errors are caused by parse_cpu_str() reaching its limit of CPU_SUBSET_MAXCPUS. It's a good idea to limit the maximum cpu number being parsed, but 1024 is too low. For a small increase in compute and allocated memory, increasing CPU_SUBSET_MAXCPUS brings support for parsing cpu numbers >= 1024. Increase CPU_SUBSET_MAXCPUS to 8192, a common setting for CONFIG_NR_CPUS on x86_64. Signed-off-by: Justin Ernst <justin.ernst@hpe.com> Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-05tracing/timers: Rename the hrtimer_init event to hrtimer_setupNam Cao
The function hrtimer_init() doesn't exist anymore. It was replaced by hrtimer_setup(). Thus, rename the hrtimer_init trace event to hrtimer_setup to keep it consistent. Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/all/cba84c3d853c5258aa3a262363a6eac08e2c7afc.1738746927.git.namcao@linutronix.de
2025-04-04selftests/bpf: Make res_spin_lock test less verboseKumar Kartikeya Dwivedi
Currently, the res_spin_lock test is too chatty as it constantly prints the test_run results for each iteration in each thread, so in case verbose output is requested or things go wrong, it will flood the logs of CI and other systems with repeated messages that offer no valuable insight. Reduce this by doing assertions when the condition actually flips, and proceed to break out and exit the threads. We still assert to mark the test as failed and print the expected and reported values. Suggested-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20250403220841.66654-1-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-04-04lib/crc: remove unnecessary prompt for CONFIG_CRC_T10DIFEric Biggers
All modules that need CONFIG_CRC_T10DIF already select it, so there is no need to bother users about the option. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2025-04-04Merge tag 'riscv-for-linus-6.15-mw1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - The sub-architecture selection Kconfig system has been cleaned up, the documentation has been improved, and various detections have been fixed - The vector-related extensions dependencies are now validated when parsing from device tree and in the DT bindings - Misaligned access probing can be overridden via a kernel command-line parameter, along with various fixes to misalign access handling - Support for relocatable !MMU kernels builds - Support for hpge pfnmaps, which should improve TLB utilization - Support for runtime constants, which improves the d_hash() performance - Support for bfloat16, Zicbom, Zaamo, Zalrsc, Zicntr, Zihpm - Various fixes, including: - We were missing a secondary mmu notifier call when flushing the tlb which is required for IOMMU - Fix ftrace panics by saving the registers as expected by ftrace - Fix a couple of stimecmp usage related to cpu hotplug - purgatory_start is now aligned as per the STVEC requirements - A fix for hugetlb when calculating the size of non-present PTEs * tag 'riscv-for-linus-6.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (65 commits) riscv: Add norvc after .option arch in runtime const riscv: Make sure toolchain supports zba before using zba instructions riscv/purgatory: 4B align purgatory_start riscv/kexec_file: Handle R_RISCV_64 in purgatory relocator selftests: riscv: fix v_exec_initval_nolibc.c riscv: Fix hugetlb retrieval of number of ptes in case of !present pte riscv: print hartid on bringup riscv: Add norvc after .option arch in runtime const riscv: Remove CONFIG_PAGE_OFFSET riscv: Support CONFIG_RELOCATABLE on riscv32 asm-generic: Always define Elf_Rel and Elf_Rela riscv: Support CONFIG_RELOCATABLE on NOMMU riscv: Allow NOMMU kernels to access all of RAM riscv: Remove duplicate CONFIG_PAGE_OFFSET definition RISC-V: errata: Use medany for relocatable builds dt-bindings: riscv: document vector crypto requirements dt-bindings: riscv: add vector sub-extension dependencies dt-bindings: riscv: d requires f RISC-V: add f & d extension validation checks RISC-V: add vector crypto extension validation checks ...
2025-04-04Merge tag 'net-6.15-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from netfilter. Current release - regressions: - four fixes for the netdev per-instance locking Current release - new code bugs: - consolidate more code between existing Rx zero-copy and uring so that the latter doesn't miss / have to duplicate the safety checks Previous releases - regressions: - ipv6: fix omitted Netlink attributes when using SKIP_STATS Previous releases - always broken: - net: fix geneve_opt length integer overflow - udp: fix multiple wrap arounds of sk->sk_rmem_alloc when it approaches INT_MAX - dsa: mvpp2: add a lock to avoid corruption of the shared TCAM - dsa: airoha: fix issues with traffic QoS configuration / offload, and flow table offload Misc: - touch up the Netlink YAML specs of old families to make them usable for user space C codegen" * tag 'net-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (56 commits) selftests: net: amt: indicate progress in the stress test netlink: specs: rt_route: pull the ifa- prefix out of the names netlink: specs: rt_addr: pull the ifa- prefix out of the names netlink: specs: rt_addr: fix get multi command name netlink: specs: rt_addr: fix the spec format / schema failures net: avoid false positive warnings in __net_mp_close_rxq() net: move mp dev config validation to __net_mp_open_rxq() net: ibmveth: make veth_pool_store stop hanging arcnet: Add NULL check in com20020pci_probe() ipv6: Do not consider link down nexthops in path selection ipv6: Start path selection from the first nexthop usbnet:fix NPE during rx_complete net: octeontx2: Handle XDP_ABORTED and XDP invalid as XDP_DROP net: fix geneve_opt length integer overflow io_uring/zcrx: fix selftests w/ updated netdev Python helpers selftests: net: use netdevsim in netns test docs: net: document netdev notifier expectations net: dummy: request ops lock netdevsim: add dummy device notifiers net: rename rtnl_net_debug to lock_debug ...
2025-04-04selftests: net: amt: indicate progress in the stress testJakub Kicinski
Our CI expects output from the test at least once every 10 minutes. The AMT test when running on debug kernel is just on the edge of that time for the stress test. Improve the output: - print the name of the test first, before starting it, - output a dot every 10% of the way. Output after: TEST: amt discovery [ OK ] TEST: IPv4 amt multicast forwarding [ OK ] TEST: IPv6 amt multicast forwarding [ OK ] TEST: IPv4 amt traffic forwarding torture .......... [ OK ] TEST: IPv6 amt traffic forwarding torture .......... [ OK ] Reviewed-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20250403145636.2891166-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-04netlink: specs: rt_addr: pull the ifa- prefix out of the namesJakub Kicinski
YAML specs don't normally include the C prefix name in the name of the YAML attr. Remove the ifa- prefix from all attributes in addr-attrs and specify name-prefix instead. This is a bit risky, hopefully there aren't many users out there. Fixes: dfb0f7d9d979 ("doc/netlink: Add spec for rt addr messages") Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Link: https://patch.msgid.link/20250403013706.2828322-4-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-04netlink: specs: rt_addr: fix get multi command nameJakub Kicinski
Command names should match C defines, codegens may depend on it. Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Fixes: 4f280376e531 ("selftests/net: Add selftest for IPv4 RTM_GETMULTICAST support") Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Link: https://patch.msgid.link/20250403013706.2828322-3-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-04Merge branch 'kvm-6.15-rc2-fixes' into HEADPaolo Bonzini
2025-04-04KVM: selftests: Add option to rseq test to override /dev/cpu_dma_latencySean Christopherson
Add a "-l <latency>" param to the rseq test so that the user can override /dev/cpu_dma_latency, as described by the test's suggested workaround for not being able to complete enough migrations. cpu_dma_latency is not a normal file, even as far as procfs files go. Writes to cpu_dma_latency only persist so long as the file is open, e.g. so that the kernel automatically reverts back to a power-optimized state once the sensitive workload completes. Provide the necessary functionality instead of effectively forcing the user to write a non-obvious wrapper. Cc: Dongsheng Zhang <dongsheng.x.zhang@intel.com> Cc: Zide Chen <zide.chen@intel.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20250401142238.819487-1-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-04-04selftests: kvm: list once tests that are valid on all architecturesPaolo Bonzini
Several tests cover infrastructure from virt/kvm/ and userspace APIs that have only minimal requirements from architecture-specific code. As such, they are available on all architectures that have libkvm support, and this presumably will apply also in the future (for example if loongarch gets selftests support). Put them in a separate variable and list them only once. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-ID: <20250401141327.785520-1-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-04-04selftests: kvm: bring list of exit reasons up to datePaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-ID: <20250331221851.614582-1-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-04-04selftests: kvm: revamp MONITOR/MWAIT testsPaolo Bonzini
Run each testcase in a separate VMs to cover more possibilities; move WRMSR close to MONITOR/MWAIT to test updating CPUID bits while in the VM. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-04-03selftests: ublk: fix test_stripe_04Ming Lei
Commit 57ed58c13256 ("selftests: ublk: enable zero copy for stripe target") added test entry of test_stripe_04, but forgot to add the test script. So fix the test by adding the script file. Reported-by: Uday Shankar <ushankar@purestorage.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Uday Shankar <ushankar@purestorage.com> Link: https://lore.kernel.org/r/20250404001849.1443064-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-03Merge tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linuxLinus Torvalds
Pull more io_uring updates from Jens Axboe: "Set of fixes/updates for io_uring that should go into this release. The ublk bits could've gone via either tree - usually I put them in block, but they got a bit mixed this series with the zero-copy supported that ended up dipping into both trees. This contains: - Fix for sendmsg zc, include in pinned pages accounting like we do for the other zc types - Series for ublk fixing request aborting, doing various little cleanups, fixing some zc issues, and adding queue_rqs support - Another ublk series doing some code cleanups - Series cleaning up the io_uring send path, mostly in preparation for registered buffers - Series doing little MSG_RING cleanups - Fix for the newly added zc rx, fixing len being 0 for the last invocation of the callback - Add vectored registered buffer support for ublk. With that, then ublk also supports this feature in the kernel revision where it could generically introduced for rw/net - A bunch of selftest additions for ublk. This is the majority of the diffstat - Silence a KCSAN data race warning for io-wq - Various little cleanups and fixes" * tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux: (44 commits) io_uring: always do atomic put from iowq selftests: ublk: enable zero copy for stripe target io_uring: support vectored kernel fixed buffer block: add for_each_mp_bvec() io_uring: add validate_fixed_range() for validate fixed buffer selftests: ublk: kublk: fix an error log line selftests: ublk: kublk: use ioctl-encoded opcodes io_uring/zcrx: return early from io_zcrx_recv_skb if readlen is 0 io_uring/net: avoid import_ubuf for regvec send io_uring/rsrc: check size when importing reg buffer io_uring: cleanup {g,s]etsockopt sqe reading io_uring: hide caches sqes from drivers io_uring: make zcrx depend on CONFIG_IO_URING io_uring: add req flag invariant build assertion Documentation: ublk: remove dead footnote selftests: ublk: specify io_cmd_buf pointer type ublk: specify io_cmd_buf pointer type io_uring: don't pass ctx to tw add remote helper io_uring/msg: initialise msg request opcode io_uring/msg: rename io_double_lock_ctx() ...
2025-04-03io_uring/zcrx: fix selftests w/ updated netdev Python helpersDavid Wei
Fix io_uring zero copy rx selftest with updated netdev Python helpers. Signed-off-by: David Wei <dw@davidwei.uk> Link: https://patch.msgid.link/20250402172414.895276-1-dw@davidwei.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-03selftests: net: use netdevsim in netns testStanislav Fomichev
Netdevsim has extra register_netdevice_notifier_dev_net notifiers, use netdevim instead of dummy device to test them out. Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20250401163452.622454-9-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-03Merge tag 'rtc-6.15' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "We see a net reduction of the number of lines of code thanks to the removal of a now unused driver and a testing tool that is not used anymore. Apart from this, the max31335 driver gets support for a new part number and pm8xxx gets UEFI support. Core: - setdate is removed as it has better replacements - skip alarms with a second resolution when we know the RTC doesn't support those. Subsystem: - remove unnecessary private struct members - use devm_pm_set_wake_irq were relevant Drivers: - ds1307: stop disabling alarms on probe for DS1337, DS1339, DS1341 and DS3231 - max31335: add max31331 support - pcf50633 is removed as support for the related SoC has been removed - pcf85063: properly handle POR failures" * tag 'rtc-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits) rtc: remove 'setdate' test program selftest: rtc: skip some tests if the alarm only supports minutes rtc: mt6397: drop unused defines rtc: pcf85063: replace dev_err+return with return dev_err_probe rtc: pcf85063: do a SW reset if POR failed rtc: max31335: Add driver support for max31331 dt-bindings: rtc: max31335: Add max31331 support rtc: cros-ec: Avoid a couple of -Wflex-array-member-not-at-end warnings dt-bindings: rtc: pcf2127: Reference spi-peripheral-props.yaml rtc: rzn1: implement one-second accuracy for alarms rtc: pcf50633: Remove rtc: pm8xxx: implement qcom,no-alarm flag for non-HLOS owned alarm rtc: pm8xxx: mitigate flash wear rtc: pm8xxx: add support for uefi offset dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag rtc: rv3032: drop WADA rtc: rv3032: fix EERD location rtc: pm8xxx: switch to devm_device_init_wakeup rtc: pm8xxx: fix possible race condition rtc: mpfs: switch to devm_device_init_wakeup ...
2025-04-03net/selftests: Add loopback link local route for self-connectDmitry Safonov
self-connect-ipv6 got slightly flaky on netdev: > # timeout set to 120 > # selftests: net/tcp_ao: self-connect_ipv6 > # 1..5 > # # 708[lib/setup.c:250] rand seed 1742872572 > # TAP version 13 > # # 708[lib/proc.c:213] Snmp6 Ip6OutNoRoutes: 0 => 1 > # not ok 1 # error 708[self-connect.c:70] failed to connect() > # ok 2 No unexpected trace events during the test run > # # Planned tests != run tests (5 != 2) > # # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:1 > ok 1 selftests: net/tcp_ao: self-connect_ipv6 I can not reproduce it on my machines, but judging by "Ip6OutNoRoutes" there is no route to the local_addr (::1). Looking at the kernel code, I see that kernel does add link-local address automatically in init_loopback(), but that is called from ipv6 notifier block. So, in turn the userspace that brought up the loopback interface may see rtnetlink ACK earlier than addrconf_notify() does it's job (at least, on a slow VM such as netdev). Probably, for ipv4 it's the same, judging by inetdev_event(). The fix is quite simple: set the link-local route straight after bringing the loopback interface. That will make it synchronous. Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com> Link: https://patch.msgid.link/20250402-tcp-ao-selfconnect-flake-v1-1-8388d629ef3d@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-03Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfLinus Torvalds
Pull bpf fixes from Alexei Starovoitov: - Fix BPF selftests expectations of assembler output and struct layout (Song Liu and Yonghong Song) - Fix XSK error code when queue is full (Wang Liang) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Fix verifier_private_stack test failure selftests/bpf: Fix verifier_bpf_fastcall test selftests/bpf: Fix tests after fields reorder in struct file xsk: Fix __xsk_generic_xmit() error code when cq is full
2025-04-03Merge tag 'mm-stable-2025-04-02-22-07' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - The series "mm: fixes for fallouts from mem_init() cleanup" from Mike Rapoport fixes a couple of issues with the just-merged "arch, mm: reduce code duplication in mem_init()" series - The series "MAINTAINERS: add my isub-entries to MM part." from Mike Rapoport does some maintenance on MAINTAINERS - The series "remove tlb_remove_page_ptdesc()" from Qi Zheng does some cleanup work to the page mapping code - The series "mseal system mappings" from Jeff Xu permits sealing of "system mappings", such as vdso, vvar, vvar_vclock, vectors (arm compat-mode), sigpage (arm compat-mode) - Plus the usual shower of singleton patches * tag 'mm-stable-2025-04-02-22-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits) mseal sysmap: add arch-support txt mseal sysmap: enable s390 selftest: test system mappings are sealed mseal sysmap: update mseal.rst mseal sysmap: uprobe mapping mseal sysmap: enable arm64 mseal sysmap: enable x86-64 mseal sysmap: generic vdso vvar mapping selftests: x86: test_mremap_vdso: skip if vdso is msealed mseal sysmap: kernel config and header change mm: pgtable: remove tlb_remove_page_ptdesc() x86: pgtable: convert to use tlb_remove_ptdesc() riscv: pgtable: unconditionally use tlb_remove_ptdesc() mm: pgtable: convert some architectures to use tlb_remove_ptdesc() mm: pgtable: change pt parameter of tlb_remove_ptdesc() to struct ptdesc* mm: pgtable: make generic tlb_remove_table() use struct ptdesc microblaze/mm: put mm_cmdline_setup() in .init.text section mm/memory_hotplug: fix call folio_test_large with tail page in do_migrate_range MAINTAINERS: mm: add entry for secretmem MAINTAINERS: mm: add entry for numa memblocks and numa emulation ...
2025-04-03Merge tag 'sched_ext-for-6.15-rc0-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext fixes from Tejun Heo: - Calling scx_bpf_create_dsq() with the same ID would succeed creating duplicate DSQs. Fix it to return -EEXIST. - scx_select_cpu_dfl() fixes and cleanups. - Synchronize tool/sched_ext with external scheduler repo. While this isn't a fix. There's no risk to the kernel and it's better if they stay synced closer. * tag 'sched_ext-for-6.15-rc0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: tools/sched_ext: Sync with scx repo sched_ext: initialize built-in idle state before ops.init() sched_ext: create_dsq: Return -EEXIST on duplicate request sched_ext: Remove a meaningless conditional goto in scx_select_cpu_dfl() sched_ext: idle: Fix return code of scx_select_cpu_dfl()
2025-04-02selftests/bpf: Fix verifier_private_stack test failureYonghong Song
Several verifier_private_stack tests failed with latest bpf-next. For example, for 'Private stack, single prog' subtest, the jitted code: func #0: 0: f3 0f 1e fa endbr64 4: 0f 1f 44 00 00 nopl (%rax,%rax) 9: 0f 1f 00 nopl (%rax) c: 55 pushq %rbp d: 48 89 e5 movq %rsp, %rbp 10: f3 0f 1e fa endbr64 14: 49 b9 58 74 8a 8f 7d 60 00 00 movabsq $0x607d8f8a7458, %r9 1e: 65 4c 03 0c 25 28 c0 48 87 addq %gs:-0x78b73fd8, %r9 27: bf 2a 00 00 00 movl $0x2a, %edi 2c: 49 89 b9 00 ff ff ff movq %rdi, -0x100(%r9) 33: 31 c0 xorl %eax, %eax 35: c9 leave 36: e9 20 5d 0f e1 jmp 0xffffffffe10f5d5b The insn 'addq %gs:-0x78b73fd8, %r9' does not match the expected regex 'addq %gs:0x{{.*}}, %r9' and this caused test failure. Fix it by changing '%gs:0x{{.*}}' to '%gs:{{.*}}' to accommodate the possible negative offset. A few other subtests are fixed in a similar way. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20250331033828.365077-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-04-02selftests/bpf: Fix verifier_bpf_fastcall testSong Liu
Commit [1] moves percpu data on x86 from address 0x000... to address 0xfff... Before [1]: 159020: 0000000000030700 0 OBJECT GLOBAL DEFAULT 23 pcpu_hot After [1]: 152602: ffffffff83a3e034 4 OBJECT GLOBAL DEFAULT 35 pcpu_hot As a result, verifier_bpf_fastcall tests should now expect a negative value for pcpu_hot, IOW, the disassemble should show "r=" instead of "w=". Fix this in the test. Note that, a later change created a new variable "cpu_number" for bpf_get_smp_processor_id() [2]. The inlining logic is updated properly as part of this change, so there is no need to fix anything on the kernel side. [1] commit 9d7de2aa8b41 ("x86/percpu/64: Use relative percpu offsets") [2] commit 01c7bc5198e9 ("x86/smp: Move cpu number to percpu hot section") Reported-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250328193124.808784-1-song@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-04-02selftests/bpf: Fix tests after fields reorder in struct fileSong Liu
The change in struct file [1] moved f_ref to the 3rd cache line. It made *(u64 *)file dereference invalid from the verifier point of view, because btf_struct_walk() walks into f_lock field, which is 4-byte long. Fix the selftests to deference the file pointer as a 4-byte access. [1] commit e249056c91a2 ("fs: place f_ref to 3rd cache line in struct file to resolve false sharing") Reported-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250327185528.1740787-1-song@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-04-02Merge tag 'cxl-for-6.15' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull Compute Express Link (CXL) updates from Dave Jiang: - Add support for Global Persistent Flush (GPF) - Cleanup of DPA partition metadata handling: - Remove the CXL_DECODER_MIXED enum that's not needed anymore - Introduce helpers to access resource and perf meta data - Introduce 'struct cxl_dpa_partition' and 'struct cxl_range_info' - Make cxl_dpa_alloc() DPA partition number agnostic - Remove cxl_decoder_mode - Cleanup partition size and perf helpers - Remove unused CXL partition values - Add logging support for CXL CPER endpoint and port protocol errors: - Prefix protocol error struct and function names with cxl_ - Move protocol error definitions and structures to a common location - Remove drivers/firmware/efi/cper_cxl.h to include/linux/cper.h - Add support in GHES to process CXL CPER protocol errors - Process CXL CPER protocol errors - Add trace logging for CXL PCIe port RAS errors - Remove redundant gp_port init - Add validation of cxl device serial number - CXL ABI documentation updates/fixups - A series that uses guard() to clean up open coded mutex lockings and remove gotos for error handling. - Some followup patches to support dirty shutdown accounting: - Add helper to retrieve DVSEC offset for dirty shutdown registers - Rename cxl_get_dirty_shutdown() to cxl_arm_dirty_shutdown() - Add support for dirty shutdown count via sysfs - cxl_test support for dirty shutdown - A series to support CXL mailbox Features commands. Mostly in preparation for CXL EDAC code to utilize the Features commands. It's also in preparation for CXL fwctl support to utilize the CXL Features. The commands include "Get Supported Features", "Get Feature", and "Set Feature". - A series to support extended linear cache support described by the ACPI HMAT table. The addition helps enumerate the cache and also provides additional RAS reporting support for configuration with extended linear cache. (and related fixes for the series). - An update to cxl_test to support a 3-way capable CFMWS - A documentation fix to remove unused "mixed mode" * tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (39 commits) cxl/region: Fix the first aliased address miscalculation cxl/region: Quiet some dev_warn()s in extended linear cache setup cxl/Documentation: Remove 'mixed' from sysfs mode doc cxl: Fix warning from emitting resource_size_t as long long int on 32bit systems cxl/test: Define a CFMWS capable of a 3 way HB interleave cxl/mem: Do not return error if CONFIG_CXL_MCE unset tools/testing/cxl: Set Shutdown State support cxl/pmem: Export dirty shutdown count via sysfs cxl/pmem: Rename cxl_dirty_shutdown_state() cxl/pci: Introduce cxl_gpf_get_dvsec() cxl/pci: Support Global Persistent Flush (GPF) cxl: Document missing sysfs files cxl: Plug typos in ABI doc cxl/pmem: debug invalid serial number data cxl/cdat: Remove redundant gp_port initialization cxl/memdev: Remove unused partition values cxl/region: Drop goto pattern of construct_region() cxl/region: Drop goto pattern in cxl_dax_region_alloc() cxl/core: Use guard() to drop goto pattern of cxl_dpa_alloc() cxl/core: Use guard() to drop the goto pattern of cxl_dpa_free() ...