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2025-04-19tools/nolibc: add __nolibc_aligned() and __nolibc_aligned_as()Thomas Weißschuh
Provide a convenience macro around __attribute__((aligned)). Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-2-060b8a016917@weissschuh.net
2025-04-19tools/nolibc: add __nolibc_has_feature()Thomas Weißschuh
Certain compiler features are signaled via the __has_feature() preprocessor builtin. Add a nolibc wrapper for it, similar to __nolibc_has_attribute(). Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-1-060b8a016917@weissschuh.net
2025-04-18sched_ext: change the variable name for slice refill eventHonglei Wang
SCX_EV_ENQ_SLICE_DFL gives the impression that the event only occurs when the tasks were enqueued, which seems not accurate. What it actually means is the refilling with defalt slice, and this can occur either when enqueue or pick_task. Let's change the variable to SCX_EV_REFILL_SLICE_DFL. Signed-off-by: Honglei Wang <jameshongleiwang@126.com> Acked-by: Changwoo Min <changwoo@igalia.com> Acked-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2025-04-18Merge tag 'hardening-v6.15-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - lib/prime_numbers: KUnit test should not select PRIME_NUMBERS (Geert Uytterhoeven) - ubsan: Fix panic from test_ubsan_out_of_bounds (Mostafa Saleh) - ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP (Nathan Chancellor) - string: Add load_unaligned_zeropad() code path to sized_strscpy() (Peter Collingbourne) - kasan: Add strscpy() test to trigger tag fault on arm64 (Vincenzo Frascino) - Disable GCC randstruct for COMPILE_TEST * tag 'hardening-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lib/prime_numbers: KUnit test should not select PRIME_NUMBERS ubsan: Fix panic from test_ubsan_out_of_bounds lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP hardening: Disable GCC randstruct for COMPILE_TEST kasan: Add strscpy() test to trigger tag fault on arm64 string: Add load_unaligned_zeropad() code path to sized_strscpy()
2025-04-18Merge tag 'linux_kselftest-kunit-fixes-6.15-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit fix from Shuah Khan: "Fixes arch sh kunit qemu_configs script sh.py to honor kunit cmdline" * tag 'linux_kselftest-kunit-fixes-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: qemu_configs: SH: Respect kunit cmdline
2025-04-18Merge tag 'linux_kselftest-fixes-6.15-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fix from Shuah Khan: "Fixes dynevent_limitations.tc test failure on dash by detecting and handling bash and dash differences in evaluating \\" * tag 'linux_kselftest-fixes-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/ftrace: Differentiate bash and dash in dynevent_limitations.tc
2025-04-18cxl: Fix devm host device for CXL fwctl initializationDave Jiang
Testing revealed the following error message for a CXL memdev that has Feature support: [ 56.690430] cxl mem0: Resources present before probing Attach the allocation of cxl_fwctl to the parent device of cxl_memdev. devm_add_* calls for cxl_memdev should not happen before the memdev probe function or outside the scope of the memdev driver. cxl_test missed this bug because cxl_test always arranges for the cxl_mem driver to be loaded before cxl_mock_mem runs. So the driver core always finds the devres list idle in that case. [DJ: Updated subject title and added commit log suggestion from djbw] Fixes: 858ce2f56b52 ("cxl: Add FWCTL support to CXL") Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Alison Schofield <alison.schofield@intel.com> Link: https://lore.kernel.org/linux-cxl/6801aea053466_71fe2944c@dwillia2-xfh.jf.intel.com.notmuch/ Link: https://patch.msgid.link/20250418002933.406439-1-dave.jiang@intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2025-04-18Merge tag 'block-6.15-20250417' of git://git.kernel.dk/linuxLinus Torvalds
Pull block fixes from Jens Axboe: - MD pull via Yu: - fix raid10 missing discard IO accounting (Yu Kuai) - fix bitmap stats for bitmap file (Zheng Qixing) - fix oops while reading all member disks failed during check/repair (Meir Elisha) - NVMe pull via Christoph: - fix scan failure for non-ANA multipath controllers (Hannes Reinecke) - fix multipath sysfs links creation for some cases (Hannes Reinecke) - PCIe endpoint fixes (Damien Le Moal) - use NULL instead of 0 in the auth code (Damien Le Moal) - Various ublk fixes: - Slew of selftest additions - Improvements and fixes for IO cancelation - Tweak to Kconfig verbiage - Fix for page dirtying for blk integrity mapped pages - loop fixes: - buffered IO fix - uevent fixes - request priority inheritance fix - Various little fixes * tag 'block-6.15-20250417' of git://git.kernel.dk/linux: (38 commits) selftests: ublk: add generic_06 for covering fault inject ublk: simplify aborting ublk request ublk: remove __ublk_quiesce_dev() ublk: improve detection and handling of ublk server exit ublk: move device reset into ublk_ch_release() ublk: rely on ->canceling for dealing with ublk_nosrv_dev_should_queue_io ublk: add ublk_force_abort_dev() ublk: properly serialize all FETCH_REQs selftests: ublk: move creating UBLK_TMP into _prep_test() selftests: ublk: add test_stress_05.sh selftests: ublk: support user recovery selftests: ublk: support target specific command line selftests: ublk: increase max nr_queues and queue depth selftests: ublk: set queue pthread's cpu affinity selftests: ublk: setup ring with IORING_SETUP_SINGLE_ISSUER/IORING_SETUP_DEFER_TASKRUN selftests: ublk: add two stress tests for zero copy feature selftests: ublk: run stress tests in parallel selftests: ublk: make sure _add_ublk_dev can return in sub-shell selftests: ublk: cleanup backfile automatically selftests: ublk: add io_uring uapi header ...
2025-04-18tracing: selftests: Add testing a user string to filtersSteven Rostedt
Running the following commands was broken: # cd /sys/kernel/tracing # echo "filename.ustring ~ \"/proc*\"" > events/syscalls/sys_enter_openat/filter # echo 1 > events/syscalls/sys_enter_openat/enable # ls /proc/$$/maps # cat trace And would produce nothing when it should have produced something like: ls-1192 [007] ..... 8169.828333: sys_openat(dfd: ffffffffffffff9c, filename: 7efc18359904, flags: 80000, mode: 0) Add a test to check this case so that it will be caught if it breaks again. Link: https://lore.kernel.org/linux-trace-kernel/20250417183003.505835fb@gandalf.local.home/ Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/20250418101208.38dc81f5@gandalf.local.home Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-04-18selftests/pcie_bwctrl: Fix test progs listIlpo Järvinen
Commit df6f8c4d72ae ("selftests/pcie_bwctrl: Add 'set_pcie_speed.sh' to TEST_PROGS") added set_pcie_speed.sh into TEST_PROGS but that script is a helper that is only being called by set_pcie_cooling_state.sh, not a test case itself. When set_pcie_speed.sh is in TEST_PROGS, selftest harness will execute also it leading to bwctrl selftest errors: # selftests: pcie_bwctrl: set_pcie_speed.sh # cat: /cur_state: No such file or directory not ok 2 selftests: pcie_bwctrl: set_pcie_speed.sh # exit=1 Place set_pcie_speed.sh into TEST_FILES instead to have it included into installed test files but not execute it from the test harness. Fixes: df6f8c4d72ae ("selftests/pcie_bwctrl: Add 'set_pcie_speed.sh' to TEST_PROGS") Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20250417124529.11391-1-ilpo.jarvinen@linux.intel.com
2025-04-18selftests/bpf: Add 5-byte NOP uprobe trigger benchmarkJiri Olsa
Add a 5-byte NOP uprobe trigger benchmark (x86_64 specific) to measure uprobes/uretprobes on top of NOP5 instructions. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Song Liu <songliubraving@fb.com> Cc: Yonghong Song <yhs@fb.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: Hao Luo <haoluo@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alan Maguire <alan.maguire@oracle.com> Link: https://lore.kernel.org/r/20250414083647.1234007-2-jolsa@kernel.org
2025-04-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.15-rc3). No conflicts. Adjacent changes: tools/net/ynl/pyynl/ynl_gen_c.py 4d07bbf2d456 ("tools: ynl-gen: don't declare loop iterator in place") 7e8ba0c7de2b ("tools: ynl: don't use genlmsghdr in classic netlink") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-17Merge tag 'net-6.15-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from Bluetooth, CAN and Netfilter. Current release - regressions: - two fixes for the netdev per-instance locking - batman-adv: fix double-hold of meshif when getting enabled Current release - new code bugs: - Bluetooth: increment TX timestamping tskey always for stream sockets - wifi: static analysis and build fixes for the new Intel sub-driver Previous releases - regressions: - net: fib_rules: fix iif / oif matching on L3 master (VRF) device - ipv6: add exception routes to GC list in rt6_insert_exception() - netfilter: conntrack: fix erroneous removal of offload bit - Bluetooth: - fix sending MGMT_EV_DEVICE_FOUND for invalid address - l2cap: process valid commands in too long frame - btnxpuart: Revert baudrate change in nxp_shutdown Previous releases - always broken: - ethtool: fix memory corruption during SFP FW flashing - eth: - hibmcge: fixes for link and MTU handling, pause frames etc - igc: fixes for PTM (PCIe timestamping) - dsa: b53: enable BPDU reception for management port Misc: - fixes for Netlink protocol schemas" * tag 'net-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (81 commits) net: ethernet: mtk_eth_soc: revise QDMA packet scheduler settings net: ethernet: mtk_eth_soc: correct the max weight of the queue limit for 100Mbps net: ethernet: mtk_eth_soc: reapply mdc divider on reset net: ti: icss-iep: Fix possible NULL pointer dereference for perout request net: ti: icssg-prueth: Fix possible NULL pointer dereference inside emac_xmit_xdp_frame() net: ti: icssg-prueth: Fix kernel warning while bringing down network interface netfilter: conntrack: fix erronous removal of offload bit net: don't try to ops lock uninitialized devs ptp: ocp: fix start time alignment in ptp_ocp_signal_set net: dsa: avoid refcount warnings when ds->ops->tag_8021q_vlan_del() fails net: dsa: free routing table on probe failure net: dsa: clean up FDB, MDB, VLAN entries on unbind net: dsa: mv88e6xxx: fix -ENOENT when deleting VLANs and MST is unsupported net: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered net: txgbe: fix memory leak in txgbe_probe() error path net: bridge: switchdev: do not notify new brentries as changed net: b53: enable BPDU reception for management port netlink: specs: rt-neigh: prefix struct nfmsg members with ndm netlink: specs: rt-link: adjust mctp attribute naming netlink: specs: rtnetlink: attribute naming corrections ...
2025-04-17selftests/bpf: Test attaching bpf qdisc to mq and non rootAmery Hung
Until we are certain that existing classful qdiscs work with bpf qdisc, make sure we don't allow attaching a bpf qdisc to non root. Meanwhile, attaching to mq is allowed. Signed-off-by: Amery Hung <ameryhung@gmail.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20250409214606.2000194-11-ameryhung@gmail.com
2025-04-17selftests/bpf: Add a bpf fq qdisc to selftestAmery Hung
This test implements a more sophisticated qdisc using bpf. The bpf fair- queueing (fq) qdisc gives each flow an equal chance to transmit data. It also respects the timestamp of skb for rate limiting. Signed-off-by: Amery Hung <amery.hung@bytedance.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20250409214606.2000194-10-ameryhung@gmail.com
2025-04-17selftests/bpf: Add a basic fifo qdisc testAmery Hung
This selftest includes a bare minimum fifo qdisc, which simply enqueues sk_buffs into the back of a bpf list and dequeues from the front of the list. Signed-off-by: Amery Hung <amery.hung@bytedance.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20250409214606.2000194-9-ameryhung@gmail.com
2025-04-17libbpf: Support creating and destroying qdiscAmery Hung
Extend struct bpf_tc_hook with handle, qdisc name and a new attach type, BPF_TC_QDISC, to allow users to add or remove any qdisc specified in addition to clsact. Signed-off-by: Amery Hung <amery.hung@bytedance.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20250409214606.2000194-8-ameryhung@gmail.com
2025-04-17testing/selftests: add test tool and scripts for ovpn moduleAntonio Quartulli
The ovpn-cli tool can be compiled and used as selftest for the ovpn kernel module. [NOTE: it depends on libmedtls for decoding base64-encoded keys] ovpn-cli implements the netlink and RTNL APIs and can thus be integrated in any script for more automated testing. Along with the tool, a bunch of scripts are provided that perform basic functionality tests by means of network namespaces. These scripts take part to the kselftest automation. The output of the scripts, which will appear in the kselftest reports, is a list of steps performed by the scripts plus some output coming from the execution of `ping`, `iperf` and `ovpn-cli` itself. In general it is useful only in case of failure, in order to understand which step has failed and why. Please note: since peer sockets are tied to the userspace process that created them (i.e. exiting the process will result in closing the socket), every run of ovpn-cli that created one will go to background and enter pause(), waiting for the signal which will allow it to terminate. Termination is accomplished at the end of each script by issuing a killall command. Cc: linux-kselftest@vger.kernel.org Cc: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Antonio Quartulli <antonio@openvpn.net> Link: https://patch.msgid.link/20250415-b4-ovpn-v26-23-577f6097b964@openvpn.net Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-16Merge tag 'mm-hotfixes-stable-2025-04-16-19-59' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "31 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 22 patches are for MM, 9 are otherwise" * tag 'mm-hotfixes-stable-2025-04-16-19-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits) MAINTAINERS: update HUGETLB reviewers mm: fix apply_to_existing_page_range() selftests/mm: fix compiler -Wmaybe-uninitialized warning alloc_tag: handle incomplete bulk allocations in vm_module_tags_populate mailmap: add entry for Jean-Michel Hautbois mm: (un)track_pfn_copy() fix + doc improvements mm: fix filemap_get_folios_contig returning batches of identical folios mm/hugetlb: add a line break at the end of the format string selftests: mincore: fix tmpfs mincore test failure mm/hugetlb: fix set_max_huge_pages() when there are surplus pages mm/cma: report base address of single range correctly mm: page_alloc: speed up fallbacks in rmqueue_bulk() kunit: slub: add module description mm/kasan: add module decription ucs2_string: add module description zlib: add module description fpga: tests: add module descriptions samples/livepatch: add module descriptions ASN.1: add module description mm/vma: add give_up_on_oom option on modify/merge, use in uffd release ...
2025-04-16selftests: ublk: add generic_06 for covering fault injectUday Shankar
Add one simple fault inject target, and verify if an application using ublk device sees an I/O error quickly after the ublk server dies. Signed-off-by: Uday Shankar <ushankar@purestorage.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250416035444.99569-9-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: move creating UBLK_TMP into _prep_test()Ming Lei
test may exit early because of missing program or not having required feature before calling _prep_test(), then $UBLK_TMP isn't cleaned. Fix it by moving creating $UBLK_TMP into _prep_test(), any resources created since _prep_test() will be cleaned by _cleanup_test(). Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-14-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: add test_stress_05.shMing Lei
Add test_stress_05.sh for covering removing device with recovery enabled. io-hang has been observed with the following patch: https://lore.kernel.org/linux-block/20250403-ublk_timeout-v3-1-aa09f76c7451@purestorage.com/ Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-13-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: support user recoveryMing Lei
Add user recovery feature. Meantime add user recovery test: generic_04 and generic_05(zero copy) Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-12-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: support target specific command lineMing Lei
Support target specific command line for making related command line code handling more readable & clean. Also helps for adding new features. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-11-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: increase max nr_queues and queue depthMing Lei
Increase max nr_queues to 32, and queue depth to 1024. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-10-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: set queue pthread's cpu affinityMing Lei
In NUMA machine, ublk IO performance is very sensitive with queue pthread's affinity setting. Retrieve queue's affinity and select the 1st cpu as queue thread's sched affinity, and it is observed that single cpu task affinity can get stable & good performance if client application is put on proper cpu. Dump this info when adding one ublk device. Use shmem to communicate queue's tid between parent and daemon. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-9-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: setup ring with ↵Ming Lei
IORING_SETUP_SINGLE_ISSUER/IORING_SETUP_DEFER_TASKRUN It is observed that this way is more efficient for fast nvme backing file. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-8-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: add two stress tests for zero copy featureMing Lei
Add stress_03 & stress_04 for covering zero copy feature. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-7-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: run stress tests in parallelMing Lei
Run stress tests in parallel, meantime add shell local function to simplify the two stress tests. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-6-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: make sure _add_ublk_dev can return in sub-shellMing Lei
Detach ublk daemon from the starting process completely by double-fork and clearing its process group, so that `_add_ublk_dev` can return from sub-shell. Then it is more friendly for writing shell test script for adding/recovering ublk device. Prepare for running ublk test in parallel. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-5-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: cleanup backfile automaticallyMing Lei
Use global array of $UBLK_BACKFILES for storing all backfile name, then clean them automatically. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-4-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: add io_uring uapi headerMing Lei
Add io_uring UAPI header so that ublk can work with latest uapi definition. Fix the following build failure: stripe.c: In function ‘stripe_to_uring_op’: stripe.c:120:29: error: ‘IORING_OP_READV_FIXED’ undeclared (first use in this function); did you mean ‘IORING_OP_READ_FIXED’? 120 | return zc ? IORING_OP_READV_FIXED : IORING_OP_READV; | ^~~~~~~~~~~~~~~~~~~~~ | IORING_OP_READ_FIXED Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Fixes: 57ed58c13256 ("selftests: ublk: enable zero copy for stripe target") Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-3-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16selftests: ublk: fix ublk_find_tgt()Ming Lei
Bounds check for iterator variable `i` is missed, so add it and fix ublk_find_tgt(). Cc: Johannes Thumshirn <Johannes.Thumshirn@wdc.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250412023035.2649275-2-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-04-16tools: ynl-gen: make sure we validate subtype of array-nestJakub Kicinski
ArrayNest AKA indexed-array support currently skips inner type validation. We count the attributes and then we parse them, make sure we call validate, too. Otherwise buggy / unexpected kernel response may lead to crashes. Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250414211851.602096-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-16tools: ynl-gen: individually free previous values on double setJakub Kicinski
When user calls request_attrA_set() multiple times (for the same attribute), and attrA is of type which allocates memory - we try to free the previously associated values. For array types (including multi-attr) we have only freed the array, but the array may have contained pointers. Refactor the code generation for free attr and reuse the generated lines in setters to flush out the previous state. Since setters are static inlines in the header we need to add forward declarations for the free helpers of pure nested structs. Track which types get used by arrays and include the right forwad declarations. At least ethtool string set and bit set would not be freed without this. Tho, admittedly, overriding already set attribute twice is likely a very very rare thing to do. Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink") Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250414211851.602096-4-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-16tools: ynl-gen: move local vars after the opening bracketJakub Kicinski
The "function writing helper" tries to put local variables between prototype and the opening bracket. Clearly wrong, but up until now nothing actually uses it to write local vars so it wasn't noticed. Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250414211851.602096-3-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-16tools: ynl-gen: don't declare loop iterator in placeJakub Kicinski
The codegen tries to follow the "old" C style and declare loop iterators at the start of the block / function. Only nested request handling breaks this style, so adjust it. Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250414211851.602096-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-16selftests/ftrace: Differentiate bash and dash in dynevent_limitations.tcSteven Rostedt
bash and dash evaluate variables differently. dash will evaluate '\\' every time it is read whereas bash does not. TEST_STRING="$TEST_STRING \\$i" echo $TEST_STRING With i=123 On bash, that will print "\123" but on dash, that will print the escape sequence of \123 as the \ will be interpreted again in the echo. The dynevent_limitations.tc test created a very large list of arguments to test the maximum number of arguments to pass to the dynamic events file. It had a loop of: TEST_STRING=$1 # Acceptable for i in `seq 1 $MAX_ARGS`; do TEST_STRING="$TEST_STRING \\$i" done echo "$TEST_STRING" >> dynamic_events This worked fine on bash, but when run on dash it failed. This was due to dash interpreting the "\\$i" twice. Once when it was assigned to TEST_STRING and a second time with the echo $TEST_STRING. bash does not process the backslash more than the first time. To solve this, assign a double backslash to a variable "bs" and then echo it to "ts". If "ts" changes, it is dash, if not, it is bash. Then update "bs" accordingly, and use that to assign TEST_STRING. Now this could possibly just check if "$BASH" is defined or not, but this is testing if the issue exists and not just which shell is being used. Link: https://lore.kernel.org/r/20250414210900.4de5e8b9@gandalf.local.home Fixes: 581a7b26ab364 ("selftests/ftrace: Add dynamic events argument limitation test case") Reported-by: Mark Brown <broonie@kernel.org> Closes: https://lore.kernel.org/all/350786cc-9e40-4396-ab95-4f10d69122fb@sirena.org.uk/ Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2025-04-16kunit: qemu_configs: Disable faulting tests on 32-bit SPARCDavid Gow
The 32-bit sparc configuration (--arch sparc) crashes on the kunit_fault_test. It's known that some architectures don't handle deliberate segfaults in kernel mode well, so there's a config switch to disable tests which rely upon it by default. Use this for the sparc config, making sure the default config for it passes. Link: https://lore.kernel.org/r/20250416093826.1550040-1-davidgow@google.com Fixes: 87c9c1631788 ("kunit: tool: add support for QEMU") Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Tested-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2025-04-16kunit: qemu_configs: Add 64-bit SPARC configurationThomas Weißschuh
Add a basic config to run kunit tests on 64-bit SPARC. Link: https://lore.kernel.org/r/20250415-kunit-qemu-sparc64-v1-2-253906f61102@linutronix.de Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2025-04-16kunit: qemu_configs: sparc: Explicitly enable CONFIG_SPARC32=yThomas Weißschuh
The configuration generated by kunit ends up with a 32bit configuration. A new kunit configuration for 64bit is to be added. To make the difference clearer spell out the variant in the kunit reference config. Link: https://lore.kernel.org/r/20250415-kunit-qemu-sparc64-v1-1-253906f61102@linutronix.de Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2025-04-16Merge remote-tracking branch 'torvalds/master' into perf-tools-nextArnaldo Carvalho de Melo
Sync with upstream to pick up the perf-tools patches that updates the header files copies to address the check_header.sh warnings. There are also some libbpf updates, better pick those to be on the same page with libbpf since perf uses it in various places. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2025-04-16selftests/x86/apx: Add APX testChang S. Bae
The extended general-purpose registers for APX may contain random data, which is currently assumed by the xstate testing framework. This allows the testing of the new userspace feature using the common test code. Invoke the test entry function from apx.c after enumerating the state component and adding it to the support list Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Link: https://lore.kernel.org/r/20250416021720.12305-6-chang.seok.bae@intel.com
2025-04-16Merge branch 'linus' into x86/cpu, to resolve conflictsIngo Molnar
Conflicts: tools/arch/x86/include/asm/cpufeatures.h Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-04-15selftests: fib_rule_tests: Add VRF match testsIdo Schimmel
Add tests for FIB rules that match on iif / oif being a VRF device. Test both good and bad flows. With previous patch ("net: fib_rules: Fix iif / oif matching on L3 master device"): # ./fib_rule_tests.sh [...] Tests passed: 328 Tests failed: 0 Without it: # ./fib_rule_tests.sh [...] Tests passed: 324 Tests failed: 4 Signed-off-by: Ido Schimmel <idosch@nvidia.com> Acked-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250414172022.242991-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-15libbpf: Verify section type in btf_find_elf_sectionsIhor Solodrai
A valid ELF file may contain a SHT_NOBITS .BTF section. This case is not handled correctly in btf_parse_elf, which leads to a segfault. Before attempting to load BTF section data, check that the section type is SHT_PROGBITS, which is the expected type for BTF data. Fail with an error if the type is different. Bug report: https://github.com/libbpf/libbpf/issues/894 v1: https://lore.kernel.org/bpf/20250408184104.3962949-1-ihor.solodrai@linux.dev/ Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250410182823.1591681-1-ihor.solodrai@linux.dev
2025-04-15libbpf: Fix buffer overflow in bpf_object__init_progViktor Malik
As shown in [1], it is possible to corrupt a BPF ELF file such that arbitrary BPF instructions are loaded by libbpf. This can be done by setting a symbol (BPF program) section offset to a large (unsigned) number such that <section start + symbol offset> overflows and points before the section data in the memory. Consider the situation below where: - prog_start = sec_start + symbol_offset <-- size_t overflow here - prog_end = prog_start + prog_size prog_start sec_start prog_end sec_end | | | | v v v v .....................|################################|............ The report in [1] also provides a corrupted BPF ELF which can be used as a reproducer: $ readelf -S crash Section Headers: [Nr] Name Type Address Offset Size EntSize Flags Link Info Align ... [ 2] uretprobe.mu[...] PROGBITS 0000000000000000 00000040 0000000000000068 0000000000000000 AX 0 0 8 $ readelf -s crash Symbol table '.symtab' contains 8 entries: Num: Value Size Type Bind Vis Ndx Name ... 6: ffffffffffffffb8 104 FUNC GLOBAL DEFAULT 2 handle_tp Here, the handle_tp prog has section offset ffffffffffffffb8, i.e. will point before the actual memory where section 2 is allocated. This is also reported by AddressSanitizer: ================================================================= ==1232==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7c7302fe0000 at pc 0x7fc3046e4b77 bp 0x7ffe64677cd0 sp 0x7ffe64677490 READ of size 104 at 0x7c7302fe0000 thread T0 #0 0x7fc3046e4b76 in memcpy (/lib64/libasan.so.8+0xe4b76) #1 0x00000040df3e in bpf_object__init_prog /src/libbpf/src/libbpf.c:856 #2 0x00000040df3e in bpf_object__add_programs /src/libbpf/src/libbpf.c:928 #3 0x00000040df3e in bpf_object__elf_collect /src/libbpf/src/libbpf.c:3930 #4 0x00000040df3e in bpf_object_open /src/libbpf/src/libbpf.c:8067 #5 0x00000040f176 in bpf_object__open_file /src/libbpf/src/libbpf.c:8090 #6 0x000000400c16 in main /poc/poc.c:8 #7 0x7fc3043d25b4 in __libc_start_call_main (/lib64/libc.so.6+0x35b4) #8 0x7fc3043d2667 in __libc_start_main@@GLIBC_2.34 (/lib64/libc.so.6+0x3667) #9 0x000000400b34 in _start (/poc/poc+0x400b34) 0x7c7302fe0000 is located 64 bytes before 104-byte region [0x7c7302fe0040,0x7c7302fe00a8) allocated by thread T0 here: #0 0x7fc3046e716b in malloc (/lib64/libasan.so.8+0xe716b) #1 0x7fc3045ee600 in __libelf_set_rawdata_wrlock (/lib64/libelf.so.1+0xb600) #2 0x7fc3045ef018 in __elf_getdata_rdlock (/lib64/libelf.so.1+0xc018) #3 0x00000040642f in elf_sec_data /src/libbpf/src/libbpf.c:3740 The problem here is that currently, libbpf only checks that the program end is within the section bounds. There used to be a check `while (sec_off < sec_sz)` in bpf_object__add_programs, however, it was removed by commit 6245947c1b3c ("libbpf: Allow gaps in BPF program sections to support overriden weak functions"). Add a check for detecting the overflow of `sec_off + prog_sz` to bpf_object__init_prog to fix this issue. [1] https://github.com/lmarch2/poc/blob/main/libbpf/libbpf.md Fixes: 6245947c1b3c ("libbpf: Allow gaps in BPF program sections to support overriden weak functions") Reported-by: lmarch2 <2524158037@qq.com> Signed-off-by: Viktor Malik <vmalik@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Shung-Hsi Yu <shung-hsi.yu@suse.com> Link: https://github.com/lmarch2/poc/blob/main/libbpf/libbpf.md Link: https://lore.kernel.org/bpf/20250415155014.397603-1-vmalik@redhat.com
2025-04-15lib/prime_numbers: KUnit test should not select PRIME_NUMBERSGeert Uytterhoeven
Enabling a (modular) test should not silently enable additional kernel functionality, as that may increase the attack vector of a product. Fix this by making PRIME_NUMBERS_KUNIT_TEST depend on PRIME_NUMBERS instead of selecting it. After this, one can safely enable CONFIG_KUNIT_ALL_TESTS=m to build modules for all appropriate tests for ones system, without pulling in extra unwanted functionality, while still allowing a tester to manually enable PRIME_NUMBERS and this test suite on a system where PRIME_NUMBERS is not enabled by default. Resurrect CONFIG_PRIME_NUMBERS=m in tools/testing/selftests/lib/config for the latter use case. Fixes: 313b38a6ecb46db4 ("lib/prime_numbers: convert self-test to KUnit") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/40f8a40eef4930d3ac9febd205bc171eb04e171c.1744641237.git.geert@linux-m68k.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-04-15x86/cpufeatures: Shorten X86_FEATURE_AMD_HETEROGENEOUS_CORESXin Li (Intel)
Shorten X86_FEATURE_AMD_HETEROGENEOUS_CORES to X86_FEATURE_AMD_HTR_CORES to make the last column aligned consistently in the whole file. No functional changes. Suggested-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Xin Li (Intel) <xin@zytor.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250415175410.2944032-4-xin@zytor.com
2025-04-15x86/cpufeatures: Shorten X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXITXin Li (Intel)
Shorten X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT to X86_FEATURE_CLEAR_BHB_VMEXIT to make the last column aligned consistently in the whole file. There's no need to explain in the name what the mitigation does. No functional changes. Suggested-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Xin Li (Intel) <xin@zytor.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250415175410.2944032-3-xin@zytor.com
generated by cgit (git 2.34.1) at 2025-07-27 20:00:42 +0000