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2023-01-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski6-21/+76
drivers/net/ipa/ipa_interrupt.c drivers/net/ipa/ipa_interrupt.h 9ec9b2a30853 ("net: ipa: disable ipa interrupt during suspend") 8e461e1f092b ("net: ipa: introduce ipa_interrupt_enable()") d50ed3558719 ("net: ipa: enable IPA interrupt handlers separate from registration") https://lore.kernel.org/all/[email protected]/ https://lore.kernel.org/all/[email protected]/ Signed-off-by: Jakub Kicinski <[email protected]>
2023-01-20Merge tag 'linux-kselftest-fixes-6.2-rc5' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fix from Shuah Khan: "Fix an error seen during unconfigured LLVM builds" * tag 'linux-kselftest-fixes-6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kselftest: Fix error message for unconfigured LLVM builds
2023-01-20Merge tag 'net-6.2-rc5-2' of ↵Linus Torvalds4-12/+64
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from wireless, bluetooth, bpf and netfilter. Current release - regressions: - Revert "net: team: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf", fix nsna_ping mode of team - wifi: mt76: fix bugs in Rx queue handling and DMA mapping - eth: mlx5: - add missing mutex_unlock in error reporter - protect global IPsec ASO with a lock Current release - new code bugs: - rxrpc: fix wrong error return in rxrpc_connect_call() Previous releases - regressions: - bluetooth: hci_sync: fix use of HCI_OP_LE_READ_BUFFER_SIZE_V2 - wifi: - mac80211: fix crashes on Rx due to incorrect initialization of rx->link and rx->link_sta - mac80211: fix bugs in iTXQ conversion - Tx stalls, incorrect aggregation handling, crashes - brcmfmac: fix regression for Broadcom PCIe wifi devices - rndis_wlan: prevent buffer overflow in rndis_query_oid - netfilter: conntrack: handle tcp challenge acks during connection reuse - sched: avoid grafting on htb_destroy_class_offload when destroying - virtio-net: correctly enable callback during start_xmit, fix stalls - tcp: avoid the lookup process failing to get sk in ehash table - ipa: disable ipa interrupt during suspend - eth: stmmac: enable all safety features by default Previous releases - always broken: - bpf: - fix pointer-leak due to insufficient speculative store bypass mitigation (Spectre v4) - skip task with pid=1 in send_signal_common() to avoid a splat - fix BPF program ID information in BPF_AUDIT_UNLOAD as well as PERF_BPF_EVENT_PROG_UNLOAD events - fix potential deadlock in htab_lock_bucket from same bucket index but different map_locked index - bluetooth: - fix a buffer overflow in mgmt_mesh_add() - hci_qca: fix driver shutdown on closed serdev - ISO: fix possible circular locking dependency - CIS: hci_event: fix invalid wait context - wifi: brcmfmac: fixes for survey dump handling - mptcp: explicitly specify sock family at subflow creation time - netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits - tcp: fix rate_app_limited to default to 1 - l2tp: close all race conditions in l2tp_tunnel_register() - eth: mlx5: fixes for QoS config and eswitch configuration - eth: enetc: avoid deadlock in enetc_tx_onestep_tstamp() - eth: stmmac: fix invalid call to mdiobus_get_phy() Misc: - ethtool: add netlink attr in rss get reply only if the value is not empty" * tag 'net-6.2-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (88 commits) Revert "Merge branch 'octeontx2-af-CPT'" tcp: fix rate_app_limited to default to 1 bnxt: Do not read past the end of test names net: stmmac: enable all safety features by default octeontx2-af: add mbox to return CPT_AF_FLT_INT info octeontx2-af: update cpt lf alloc mailbox octeontx2-af: restore rxc conf after teardown sequence octeontx2-af: optimize cpt pf identification octeontx2-af: modify FLR sequence for CPT octeontx2-af: add mbox for CPT LF reset octeontx2-af: recover CPT engine when it gets fault net: dsa: microchip: ksz9477: port map correction in ALU table entry register selftests/net: toeplitz: fix race on tpacket_v3 block close net/ulp: use consistent error code when blocking ULP octeontx2-pf: Fix the use of GFP_KERNEL in atomic context on rt tcp: avoid the lookup process failing to get sk in ehash table Revert "net: team: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf" MAINTAINERS: add networking entries for Willem net: sched: gred: prevent races when adding offloads to stats l2tp: prevent lockdep issue in l2tp_tunnel_register() ...
2023-01-20kselftest/arm64: Correct buffer size for SME ZA storageZenghui Yu1-2/+2
It looks like a copy-paste error to describe the ZA buffer size using (the number of P registers * the maximum size of a Z register). This doesn't have practical impact though as we're always allocating enough space even for the architectural maximum ZA storage, with SVL equals to 2048 bits. Switch to use ZA_SIG_REGS_SIZE(SVE_VQ_MAX). setup_za() will need to initialize two 64MB arraies with this change and can be optimized later (if someone complain). Signed-off-by: Zenghui Yu <[email protected]> Reviewed-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Remove the local NUM_VL definitionZenghui Yu1-2/+0
It was introduced in commit b77e995e3b96 ("kselftest/arm64: Add a test program to exercise the syscall ABI") but never actually used. Remove it. Signed-off-by: Zenghui Yu <[email protected]> Reviewed-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Verify simultaneous SSVE and ZA context generationMark Brown1-0/+162
Add a test that generates SSVE and ZA context in a single signal frame to ensure that nothing is going wrong in that case for any reason. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Verify that SSVE signal context has SVE_SIG_FLAG_SM setMark Brown1-0/+5
Streaming mode SVE signal context should have SVE_SIG_FLAG_SM set but we were not actually validating this. Add a check. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Remove spurious comment from MTE test MakefileMark Brown1-1/+0
There's a stray comment in the MTE test Makefile which documents something that's since been removed, delete it. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Support build of MTE tests with clangMark Brown1-5/+15
The assembly portions of the MTE selftests need to be built with a toolchain supporting MTE. Since we support GCC versions that lack MTE support we have logic to suppress build of these tests when using such a toolchain but that logic is broken for LLVM=1 builds, it uses CC but CC is only set for LLVM builds in libs.mk which needs to be included after we have selected which test programs to build. Since all supported LLVM versions support MTE we can simply assume MTE support when LLVM is set. This is not a thing of beauty but it does the job. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Initialise current at build time in signal testsMark Brown1-3/+1
When building with clang the toolchain refuses to link the signals testcases since the assembly code has a reference to current which has no initialiser so is placed in the BSS: /tmp/signals-af2042.o: in function `fake_sigreturn': <unknown>:51:(.text+0x40): relocation truncated to fit: R_AARCH64_LD_PREL_LO19 against symbol `current' defined in .bss section in /tmp/test_signals-ec1160.o Since the first statement in main() initialises current we may as well fix this by moving the initialisation to build time so the variable doesn't end up in the BSS. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Don't pass headers to the compiler as sourceMark Brown1-2/+6
The signal Makefile rules pass all the dependencies for each executable, including headers, to the compiler which GCC is happy enough with but clang rejects: clang --target=aarch64-none-linux-gnu -fintegrated-as -Wall -O2 -g -I/home/broonie/git/linux/tools/testing/selftests/ -isystem /home/broonie/git/linux/usr/include -D_GNU_SOURCE -std=gnu99 -I. test_signals.c test_signals_utils.c testcases/testcases.c signals.S testcases/fake_sigreturn_bad_magic.c test_signals.h test_signals_utils.h testcases/testcases.h -o testcases/fake_sigreturn_bad_magic clang: error: cannot specify -o when generating multiple output files This happens because clang gets confused about what to do with the header files, failing to identify them as source. This is not amazing behaviour on clang's part and should ideally be fixed but even if that happens we'd still need a new clang release so let's instead rework the Makefile so we use variables for the lists of header and source files, allowing us to only pass the source files to the compiler and keep clang happy. As a bonus the resulting Makefile is a bit easier to read. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Remove redundant _start labels from FP testsMark Brown4-4/+0
There are a number of freestanding static executables used in floating point testing that have no runtime at all. These all define the main entry point as: .globl _start function _start _start: but clang's integrated assembler complains that: error: symbol '_start' is already defined due to having both a label and function directive. Remove the label to allow building with clang. No functional change. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Fix .pushsection for strings in FP testsMark Brown1-1/+1
The .pushsection directive used to store the strings used with the .puts macro in the floating point helpers does not provide a section type but according to the gas documentation this should be mandatory and with the clang built in as it actually is. Provide one so that we can build these tests with LLVM=1. No functional change. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add test case for TPIDR2 signal frame recordsMark Brown2-0/+91
Ensure that we get signal context for TPIDR2 if and only if SME is present on the system. Since TPIDR2 is owned by libc we merely validate that the value is whatever it was set to, this isn't ideal since it's likely to just be the default of 0 with current systems but it avoids future false positives. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add TPIDR2 to the set of known signal context recordsMark Brown1-0/+4
When validating the set of signal context records check that any TPIDR2 record has the correct size, also suppressing warnings due to seeing an unknown record type. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add coverage of SME 2 and 2.1 hwcapsMark Brown1-0/+115
Add the hwcaps defined by SME 2 and 2.1 to the hwcaps test. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add coverage of the ZT ptrace regsetMark Brown3-0/+368
Add coverage of the ZT ptrace interface. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add SME2 coverage to syscall-abiMark Brown2-3/+80
Verify that ZT0 is preserved over syscalls when it is present and PSTATE.ZA is set. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add test coverage for ZT register signal framesMark Brown3-0/+137
We should have a ZT register frame with an expected size when ZA is enabled and have no ZT frame when ZA is disabled. Since we don't load any data into ZT we expect the data to all be zeros since the architecture guarantees it will be set to 0 as ZA is enabled. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Teach the generic signal context validation about ZTMark Brown2-0/+37
Add ZT to the set of signal contexts that the shared code understands and validates the form of. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Enumerate SME2 in the signal test utility codeMark Brown2-0/+5
Support test cases for SME2 by adding it to the set of features that we enumerate so test cases can check for it. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Cover ZT in the FP stress testMark Brown1-2/+27
Hook up the newly added zt-test program in the FPSIMD stress tests, start a copy per CPU when SME2 is supported. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-20kselftest/arm64: Add a stress test program for ZT0Mark Brown4-0/+341
Following the pattern for the other register sets add a stress test program for ZT0 which continually loads and verifies patterns in the register in an effort to discover context switching problems. Signed-off-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2023-01-19selftests/filesystems: grant executable permission to run_fat_tests.shPengfei Xu1-0/+0
When use tools/testing/selftests/kselftest_install.sh to make the kselftest-list.txt under tools/testing/selftests/kselftest_install. Then use tools/testing/selftests/kselftest_install/run_kselftest.sh to run all the kselftests in kselftest-list.txt, it will be blocked by case "filesystems/fat: run_fat_tests.sh" with "Warning: file run_fat_tests.sh is not executable", so grant executable permission to run_fat_tests.sh to fix this issue. Link: https://lkml.kernel.org/r/dfdbba6df8a1ab34bb1e81cd8bd7ca3f9ed5c369.1673424747.git.pengfei.xu@intel.com Fixes: dd7c9be330d8 ("selftests/filesystems: add a vfat RENAME_EXCHANGE test") Signed-off-by: Pengfei Xu <[email protected]> Reviewed-by: Javier Martinez Canillas <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-19selftests/bpf: Add serial_test_kprobe_multi_bench_attach_kernel/module testsJiri Olsa1-5/+14
Add bench test for module portion of the symbols as well. # ./test_progs -v -t kprobe_multi_bench_attach_module bpf_testmod.ko is already unloaded. Loading bpf_testmod.ko... Successfully loaded bpf_testmod.ko. test_kprobe_multi_bench_attach:PASS:get_syms 0 nsec test_kprobe_multi_bench_attach:PASS:kprobe_multi_empty__open_and_load 0 nsec test_kprobe_multi_bench_attach:PASS:bpf_program__attach_kprobe_multi_opts 0 nsec test_kprobe_multi_bench_attach: found 26620 functions test_kprobe_multi_bench_attach: attached in 0.182s test_kprobe_multi_bench_attach: detached in 0.082s #96 kprobe_multi_bench_attach_module:OK Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED Successfully unloaded bpf_testmod.ko. It's useful for testing kprobe multi link modules resolving. Acked-by: Song Liu <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-01-19selftests/bpf: Verify copy_register_state() preserves parent/live fieldsEduard Zingerman1-0/+36
A testcase to check that verifier.c:copy_register_state() preserves register parentage chain and livness information. Signed-off-by: Eduard Zingerman <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-01-19selftests/net: toeplitz: fix race on tpacket_v3 block closeWillem de Bruijn1-5/+7
Avoid race between process wakeup and tpacket_v3 block timeout. The test waits for cfg_timeout_msec for packets to arrive. Packets arrive in tpacket_v3 rings, which pass packets ("frames") to the process in batches ("blocks"). The sk waits for req3.tp_retire_blk_tov msec to release a block. Set the block timeout lower than the process waiting time, else the process may find that no block has been released by the time it scans the socket list. Convert to a ring of more than one, smaller, blocks with shorter timeouts. Blocks must be page aligned, so >= 64KB. Fixes: 5ebfb4cc3048 ("selftests/net: toeplitz test") Signed-off-by: Willem de Bruijn <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2023-01-19selftests/net: mv bpf/nat6to4.c to net folderHangbin Liu4-57/+52
There are some issues with the bpf/nat6to4.c building. 1. It use TEST_CUSTOM_PROGS, which will add the nat6to4.o to kselftest-list file and run by common run_tests. 2. When building the test via `make -C tools/testing/selftests/ TARGETS="net"`, the nat6to4.o will be build in selftests/net/bpf/ folder. But in test udpgro_frglist.sh it refers to ../bpf/nat6to4.o. The correct path should be ./bpf/nat6to4.o. 3. If building the test via `make -C tools/testing/selftests/ TARGETS="net" install`. The nat6to4.o will be installed to kselftest_install/net/ folder. Then the udpgro_frglist.sh should refer to ./nat6to4.o. To fix the confusing test path, let's just move the nat6to4.c to net folder and build it as TEST_GEN_FILES. Fixes: edae34a3ed92 ("selftests net: add UDP GRO fraglist + bpf self-tests") Tested-by: Björn Töpel <[email protected]> Signed-off-by: Hangbin Liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Paolo Abeni <[email protected]>
2023-01-18selftests/vm: remove __USE_GNU in hugetlb-madvise.cPeter Xu1-1/+0
__USE_GNU should be an internal macro only used inside glibc. Either memfd_create() or fallocate() requires _GNU_SOURCE per man page, where __USE_GNU will further be defined by glibc headers include/features.h: #ifdef _GNU_SOURCE # define __USE_GNU 1 #endif This fixes: >> hugetlb-madvise.c:20: warning: "__USE_GNU" redefined 20 | #define __USE_GNU | In file included from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33, from /usr/include/stdlib.h:26, from hugetlb-madvise.c:16: /usr/include/features.h:407: note: this is the location of the previous definition 407 | # define __USE_GNU 1 | Link: https://lkml.kernel.org/r/Y8V9z+z6Tk7NetI3@x1n Signed-off-by: Peter Xu <[email protected]> Reported-by: kernel test robot <[email protected]> Cc: Mike Kravetz <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests: vm: enable cross-compilationBjörn Töpel1-0/+4
Selftests vm builds break when doing cross-compilation. The Makefile MACHINE variable incorrectly picks upp the host machine architecture. If the CROSS_COMPILE variable is set, dig out the target host architecture from CROSS_COMPILE, instead of calling uname. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Björn Töpel <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/mm: define MADV_PAGEOUT to fix compilation issuesDavid Hildenbrand1-0/+3
If MADV_PAGEOUT is not defined (e.g., on AlmaLinux 8), compilation will fail. Let's fix that like khugepaged.c does by conditionally defining MADV_PAGEOUT. Link: https://lkml.kernel.org/r/[email protected] Fixes: 69c66add5663 ("selftests/vm: anon_cow: test COW handling of anonymous memory") Signed-off-by: David Hildenbrand <[email protected]> Reported-by: Mirsad Goran Todorovac <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftest/vm: add mremap expand merge offset testLorenzo Stoakes1-23/+96
Add a test to assert that we can mremap() and expand a mapping starting from an offset within an existing mapping. We unmap the last page in a 3 page mapping to ensure that the remap should always succeed, before remapping from the 2nd page. This is additionally a regression test for the issue solved in "mm, mremap: fix mremap() expanding vma with addr inside vma" and confirmed to fail prior to the change and pass after it. Finally, this patch updates the existing mremap expand merge test to check error conditions and reduce code duplication between the two tests. [[email protected]: increment num_expand_tests so test doesn't complain about unexpected tests being run] Link: https://lkml.kernel.org/r/8ff3ba3cadc0b6c1b2688ae5c851bf73aa062d57.1673701836.git.lstoakes@gmail.com Link: https://lkml.kernel.org/r/02b117a8ffd52acc01dc66c2fb39754f08d92c0e.1672675824.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes <[email protected]> Acked-by: David Hildenbrand <[email protected]> Cc: Jakub Matěna <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Vlastimil Babka <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/vm: rename selftests/vm to selftests/mmSeongJae Park54-6/+6
Rename selftets/vm to selftests/mm for being more consistent with the code, documentation, and tools directories, and won't be confused with virtual machines. [[email protected]: convert missing vm->mm changes] Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: SeongJae Park <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/vm: cow: add COW tests for collapsing of PTE-mapped anon THPDavid Hildenbrand1-0/+228
Currently, anonymous PTE-mapped THPs cannot be collapsed in-place: collapsing (e.g., via MADV_COLLAPSE) implies allocating a fresh THP and mapping that new THP via a PMD: as it's a fresh anon THP, it will get the exclusive flag set on the head page and everybody is happy. However, if the kernel would ever support in-place collapse of anonymous THPs (replacing a page table mapping each sub-page of a THP via PTEs with a single PMD mapping the complete THP), exclusivity information stored for each sub-page would have to be collapsed accordingly: (1) All PTEs map !exclusive anon sub-pages: the in-place collapsed THP must not not have the exclusive flag set on the head page mapped by the PMD. This is the easiest case to handle ("simply don't set any exclusive flags"). (2) All PTEs map exclusive anon sub-pages: when collapsing, we have to clear the exclusive flag from all tail pages and only leave the exclusive flag set for the head page. Otherwise, fork() after collapse would not clear the exclusive flags from the tail pages and we'd be in trouble once PTE-mapping the shared THP when writing to shared tail pages that still have the exclusive flag set. This would effectively revert what the PTE-mapping code does when propagating the exclusive flag to all sub-pages. (3) PTEs map a mixture of exclusive and !exclusive anon sub-pages (can happen e.g., due to MADV_DONTFORK before fork()). We must not collapse the THP in-place, otherwise bad things may happen: the exclusive flags of sub-pages would get ignored and the exclusive flag of the head page would get used instead. Now that we have MADV_COLLAPSE in place to trigger collapsing a THP, let's add some test cases that would bail out early, if we'd voluntarily/accidantially unlock in-place collapse for anon THPs and forget about taking proper care of exclusive flags. Running the test on a kernel with MADV_COLLAPSE support: # [INFO] Anonymous THP tests # [RUN] Basic COW after fork() when collapsing before fork() ok 169 No leak from parent into child # [RUN] Basic COW after fork() when collapsing after fork() (fully shared) ok 170 # SKIP MADV_COLLAPSE failed: Invalid argument # [RUN] Basic COW after fork() when collapsing after fork() (lower shared) ok 171 No leak from parent into child # [RUN] Basic COW after fork() when collapsing after fork() (upper shared) ok 172 No leak from parent into child For now, MADV_COLLAPSE always seems to fail if all PTEs map shared sub-pages. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: David Hildenbrand <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Peter Xu <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Nadav Amit <[email protected]> Cc: Zach O'Keefe <[email protected]> Cc: Andrea Arcangeli <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/vm: ksm_functional_tests: fix a typo in commentXu Panda1-1/+1
Fix a typo of "comaring" which should be "comparing". Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Xu Panda <[email protected]> Signed-off-by: xu xin <[email protected]> Reviewed-by: David Hildenbrand <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/damon/sysfs: test filters directorySeongJae Park1-0/+29
Add simple test cases for scheme filters of DAMON sysfs interface. The test cases check if the files are populated as expected, receives some valid inputs, and refuses some invalid inputs. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: SeongJae Park <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/memfd: add tests for MFD_NOEXEC_SEAL MFD_EXECJeff Xu2-5/+224
Tests to verify MFD_NOEXEC, MFD_EXEC and vm.memfd_noexec sysctl. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Jeff Xu <[email protected]> Co-developed-by: Daniel Verkamp <[email protected]> Signed-off-by: Daniel Verkamp <[email protected]> Reviewed-by: Kees Cook <[email protected]> Cc: David Herrmann <[email protected]> Cc: Dmitry Torokhov <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Jann Horn <[email protected]> Cc: Jorge Lucangeli Obes <[email protected]> Cc: kernel test robot <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18selftests/memfd: add tests for F_SEAL_EXECDaniel Verkamp1-1/+122
Basic tests to ensure that user/group/other execute bits cannot be changed after applying F_SEAL_EXEC to a memfd. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Daniel Verkamp <[email protected]> Co-developed-by: Jeff Xu <[email protected]> Signed-off-by: Jeff Xu <[email protected]> Reviewed-by: Kees Cook <[email protected]> Cc: David Herrmann <[email protected]> Cc: Dmitry Torokhov <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Jann Horn <[email protected]> Cc: Jorge Lucangeli Obes <[email protected]> Cc: kernel test robot <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
2023-01-18Sync with v6.2-rc4Andrew Morton2-74/+130
Merge branch 'master' into mm-hotfixes-stable
2023-01-18selftests/bpf: Fix build errors if CONFIG_NF_CONNTRACK=mTiezhu Yang1-3/+8
If CONFIG_NF_CONNTRACK=m, there are no definitions of NF_NAT_MANIP_SRC and NF_NAT_MANIP_DST in vmlinux.h, build test_bpf_nf.c failed. $ make -C tools/testing/selftests/bpf/ CLNG-BPF [test_maps] test_bpf_nf.bpf.o progs/test_bpf_nf.c:160:42: error: use of undeclared identifier 'NF_NAT_MANIP_SRC' bpf_ct_set_nat_info(ct, &saddr, sport, NF_NAT_MANIP_SRC); ^ progs/test_bpf_nf.c:163:42: error: use of undeclared identifier 'NF_NAT_MANIP_DST' bpf_ct_set_nat_info(ct, &daddr, dport, NF_NAT_MANIP_DST); ^ 2 errors generated. Copy the definitions in include/net/netfilter/nf_nat.h to test_bpf_nf.c, in order to avoid redefinitions if CONFIG_NF_CONNTRACK=y, rename them with ___local suffix. This is similar with commit 1058b6a78db2 ("selftests/bpf: Do not fail build if CONFIG_NF_CONNTRACK=m/n"). Fixes: b06b45e82b59 ("selftests/bpf: add tests for bpf_ct_set_nat_info kfunc") Signed-off-by: Tiezhu Yang <[email protected]> Acked-by: Jiri Olsa <[email protected]> Tested-by: Jiri Olsa <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Martin KaFai Lau <[email protected]>
2023-01-18selftests: hid: enforce new attach APIBenjamin Tissoires1-5/+1
Now that the new API for hid_bpf_attach_prog() is in place, ensure we get an fd when calling this function. And remove the fallback code. Signed-off-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2023-01-18selftests: hid: prepare tests for HID_BPF API changeBenjamin Tissoires1-4/+25
We plan on changing the return value of hid_bpf_attach_prog(). Instead of returning an error code, it will return an fd to a bpf_link. This bpf_link is responsible for the binding between the bpf program and the hid device. Add a fallback mechanism to not break bisections by pinning the program when we run this test against the non changed kernel. Signed-off-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2023-01-18selftests: hid: ensure the program is correctly pinnedBenjamin Tissoires1-1/+2
Turns out that if bpffs was not mounted, the test was silently passing. So ensure it passes by checking the mount command result. Signed-off-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2023-01-18selftests: hid: attach/detach 2 bpf programs, not just oneBenjamin Tissoires2-1/+20
Add a second BPF program to attach to the device, as the development of this feature showed that we also need to ensure we can detach multiple programs to a device (hid_bpf_link->hid_table_index was actually not set initially, and this lead to any BPF program not being released except for the first one). Signed-off-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2023-01-18selftests: hid: allow to compile hid_bpf with LLVMBenjamin Tissoires1-5/+5
clang doesn't like to compile a source to the final binary directly: clang-14: error: cannot specify -o when generating multiple output files So split the final rule in 2, and ensure we compile all dependencies before. Signed-off-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2023-01-18selftests: hid: add vmtest.shBenjamin Tissoires4-0/+530
Similar-ish in many points from the script in selftests/bpf, with a few differences: - relies on boot2container instead of a plain qemu image (meaning that we can take any container in a registry as a base) - runs in the hid selftest dir, and such uses the test program from there - the working directory to store the config is in tools/selftests/hid/results Signed-off-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2023-01-18fs: port vfs_*() helpers to struct mnt_idmapChristian Brauner1-1/+1
Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Christian Brauner (Microsoft) <[email protected]>
2023-01-17bpf/selftests: Add verifier tests for loading sleepable programsJiri Olsa1-0/+91
Adding verifier tests for loading all types od allowed sleepable programs plus reject for tp_btf type. Acked-by: Song Liu <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-01-16Merge tag 'mm-hotfixes-stable-2023-01-16-15-23' of ↵Linus Torvalds2-9/+12
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "21 hotfixes. Thirteen of these address pre-6.1 issues and hence have the cc:stable tag" * tag 'mm-hotfixes-stable-2023-01-16-15-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits) init/Kconfig: fix typo (usafe -> unsafe) nommu: fix split_vma() map_count error nommu: fix do_munmap() error path nommu: fix memory leak in do_mmap() error path MAINTAINERS: update Robert Foss' email address proc: fix PIE proc-empty-vm, proc-pid-vm tests mm: update mmap_sem comments to refer to mmap_lock include/linux/mm: fix release_pages_arg kernel doc comment lib/win_minmax: use /* notation for regular comments kasan: mark kasan_kunit_executing as static nilfs2: fix general protection fault in nilfs_btree_insert() Docs/admin-guide/mm/zswap: remove zsmalloc's lack of writeback warning mm/hugetlb: pre-allocate pgtable pages for uffd wr-protects hugetlb: unshare some PMDs when splitting VMAs mm: fix vma->anon_name memory leak for anonymous shmem VMAs mm/shmem: restore SHMEM_HUGE_DENY precedence over MADV_COLLAPSE mm/MADV_COLLAPSE: don't expand collapse when vm_end is past requested end mm/userfaultfd: enable writenotify while userfaultfd-wp is enabled for a VMA mm/khugepaged: fix collapse_pte_mapped_thp() to allow anon_vma mm/hugetlb: fix uffd-wp handling for migration entries in hugetlb_change_protection() ...
2023-01-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nfDavid S. Miller2-7/+10
Pable Neira Ayuso says: ==================== The following patchset contains Netfilter fixes for net: 1) Increase timeout to 120 seconds for netfilter selftests to fix nftables transaction tests, from Florian Westphal. 2) Fix overflow in bitmap_ip_create() due to integer arithmetics in a 64-bit bitmask, from Gavrilov Ilia. 3) Fix incorrect arithmetics in nft_payload with double-tagged vlan matching. ==================== Signed-off-by: David S. Miller <[email protected]>
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