June 2025 - Linux-kselftest-mirror

[PATCH v3] KVM: SEV: Disable SEV-SNP support on initialization failure

by Ashish Kalra

From: Ashish Kalra <ashish.kalra(a)amd.com> During platform init, SNP initialization may fail for several reasons, such as firmware command failures and incompatible versions. However, the KVM capability may continue to advertise support for it. The platform may have SNP enabled but if SNP_INIT fails then SNP is not supported by KVM. During KVM module initialization query the SNP platform status to obtain the SNP initialization state and use it as an additional condition to determine support for SEV-SNP. Co-developed-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Sean Christopherson <seanjc(a)google.com> Co-developed-by: Pratik R. Sampat <prsampat(a)amd.com> Signed-off-by: Pratik R. Sampat <prsampat(a)amd.com> Reviewed-by: Tom Lendacky <thomas.lendacky(a)amd.com> Signed-off-by: Ashish Kalra <ashish.kalra(a)amd.com> --- arch/x86/kvm/svm/sev.c | 44 +++++++++++++++++++++++++++++++++--------- 1 file changed, 35 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index dea9480b9ff6..8c3b12e3de8c 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -2935,6 +2935,33 @@ void __init sev_set_cpu_caps(void) } } +static bool is_sev_snp_initialized(void) +{ + struct sev_user_data_snp_status *status; + struct sev_data_snp_addr buf; + bool initialized = false; + int ret, error = 0; + + status = snp_alloc_firmware_page(GFP_KERNEL | __GFP_ZERO); + if (!status) + return false; + + buf.address = __psp_pa(status); + ret = sev_do_cmd(SEV_CMD_SNP_PLATFORM_STATUS, &buf, &error); + if (ret) { + pr_err("SEV: SNP_PLATFORM_STATUS failed ret=%d, fw_error=%d (%#x)\n", + ret, error, error); + goto out; + } + + initialized = !!status->state; + +out: + snp_free_firmware_page(status); + + return initialized; +} + void __init sev_hardware_setup(void) { unsigned int eax, ebx, ecx, edx, sev_asid_count, sev_es_asid_count; @@ -3039,6 +3066,14 @@ void __init sev_hardware_setup(void) sev_snp_supported = sev_snp_enabled && cc_platform_has(CC_ATTR_HOST_SEV_SNP); out: + if (sev_enabled) { + init_args.probe = true; + if (sev_platform_init(&init_args)) + sev_supported = sev_es_supported = sev_snp_supported = false; + else if (sev_snp_supported) + sev_snp_supported = is_sev_snp_initialized(); + } + if (boot_cpu_has(X86_FEATURE_SEV)) pr_info("SEV %s (ASIDs %u - %u)\n", sev_supported ? min_sev_asid <= max_sev_asid ? "enabled" : @@ -3065,15 +3100,6 @@ void __init sev_hardware_setup(void) sev_supported_vmsa_features = 0; if (sev_es_debug_swap_enabled) sev_supported_vmsa_features |= SVM_SEV_FEAT_DEBUG_SWAP; - - if (!sev_enabled) - return; - - /* - * Do both SNP and SEV initialization at KVM module load. - */ - init_args.probe = true; - sev_platform_init(&init_args); } void sev_hardware_unsetup(void) -- 2.34.1

2 months, 3 weeks

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[PATCH v2] selftests: cachestat: Refactor test to remove duplication

by Suresh K C

From: Suresh K C <suresh.k.chandrappa(a)gmail.com> Refactored the mmap and shmem test logic into a common function to reduce code duplication and improve maintainability Changes in v2: Refactored mmap and shmem tests into a common function Renamed test function to run_cachestat_test() Removed test for /proc/cpuinfo as a general /proc test case already exists Signed-off-by: Suresh K C <suresh.k.chandrappa(a)gmail.com> --- .../selftests/cachestat/test_cachestat.c | 97 ++++++------------- 1 file changed, 30 insertions(+), 67 deletions(-) diff --git a/tools/testing/selftests/cachestat/test_cachestat.c b/tools/testing/selftests/cachestat/test_cachestat.c index 81e7f6dd2279..7c2f64175943 100644 --- a/tools/testing/selftests/cachestat/test_cachestat.c +++ b/tools/testing/selftests/cachestat/test_cachestat.c @@ -22,7 +22,7 @@ static const char * const dev_files[] = { "/dev/zero", "/dev/null", "/dev/urandom", - "/proc/version","/proc/cpuinfo","/proc" + "/proc/version","/proc" }; void print_cachestat(struct cachestat *cs) @@ -33,6 +33,11 @@ void print_cachestat(struct cachestat *cs) cs->nr_evicted, cs->nr_recently_evicted); } +enum file_type { + FILE_MMAP, + FILE_SHMEM +}; + bool write_exactly(int fd, size_t filesize) { int random_fd = open("/dev/urandom", O_RDONLY); @@ -202,66 +207,8 @@ static int test_cachestat(const char *filename, bool write_random, bool create, return ret; } -bool test_cachestat_mmap(void){ - - size_t PS = sysconf(_SC_PAGESIZE); - size_t filesize = PS * 512 * 2;; - int syscall_ret; - size_t compute_len = PS * 512; - struct cachestat_range cs_range = { PS, compute_len }; - char *filename = "tmpshmcstat"; - unsigned long num_pages = compute_len / PS; - struct cachestat cs; - bool ret = true; - int fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0666); - if (fd < 0) { - ksft_print_msg("Unable to create mmap file.\n"); - ret = false; - goto out; - } - if (ftruncate(fd, filesize)) { - ksft_print_msg("Unable to truncate mmap file.\n"); - ret = false; - goto close_fd; - } - if (!write_exactly(fd, filesize)) { - ksft_print_msg("Unable to write to mmap file.\n"); - ret = false; - goto close_fd; - } - char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); - if (map == MAP_FAILED) { - ksft_print_msg("mmap failed.\n"); - ret = false; - goto close_fd; - } - - for (int i = 0; i < filesize; i++) { - map[i] = 'A'; - } - map[filesize - 1] = 'X'; - - syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0); - - if (syscall_ret) { - ksft_print_msg("Cachestat returned non-zero.\n"); - ret = false; - } else { - print_cachestat(&cs); - if (cs.nr_cache + cs.nr_evicted != num_pages) { - ksft_print_msg("Total number of cached and evicted pages is off.\n"); - ret = false; - } - } - -close_fd: - close(fd); - unlink(filename); -out: - return ret; -} -bool test_cachestat_shmem(void) +bool run_cachestat_test(enum file_type type) { size_t PS = sysconf(_SC_PAGESIZE); size_t filesize = PS * 512 * 2; /* 2 2MB huge pages */ @@ -271,27 +218,43 @@ bool test_cachestat_shmem(void) char *filename = "tmpshmcstat"; struct cachestat cs; bool ret = true; + int fd; unsigned long num_pages = compute_len / PS; - int fd = shm_open(filename, O_CREAT | O_RDWR, 0600); + if (type == FILE_SHMEM) + fd = shm_open(filename, O_CREAT | O_RDWR, 0600); + else + fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0666); if (fd < 0) { - ksft_print_msg("Unable to create shmem file.\n"); + ksft_print_msg("Unable to create file.\n"); ret = false; goto out; } if (ftruncate(fd, filesize)) { - ksft_print_msg("Unable to truncate shmem file.\n"); + ksft_print_msg("Unable to truncate file.\n"); ret = false; goto close_fd; } if (!write_exactly(fd, filesize)) { - ksft_print_msg("Unable to write to shmem file.\n"); + ksft_print_msg("Unable to write to file.\n"); ret = false; goto close_fd; } + if (type == FILE_MMAP){ + char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (map == MAP_FAILED) { + ksft_print_msg("mmap failed.\n"); + ret = false; + goto close_fd; + } + for (int i = 0; i < filesize; i++) { + map[i] = 'A'; + } + map[filesize - 1] = 'X'; + } syscall_ret = syscall(__NR_cachestat, fd, &cs_range, &cs, 0); if (syscall_ret) { @@ -333,7 +296,7 @@ int main(void) ret = 1; } - for (int i = 0; i < 6; i++) { + for (int i = 0; i < 5; i++) { const char *dev_filename = dev_files[i]; if (test_cachestat(dev_filename, false, false, false, @@ -367,14 +330,14 @@ int main(void) break; } - if (test_cachestat_shmem()) + if (run_cachestat_test(FILE_SHMEM)) ksft_test_result_pass("cachestat works with a shmem file\n"); else { ksft_test_result_fail("cachestat fails with a shmem file\n"); ret = 1; } - if (test_cachestat_mmap()) + if (run_cachestat_test(FILE_MMAP)) ksft_test_result_pass("cachestat works with a mmap file\n"); else { ksft_test_result_fail("cachestat fails with a mmap file\n"); -- 2.43.0

2 months, 3 weeks

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[PATCH v8 RESEND iproute2-next 0/1] DUALPI2 iproute2 patch

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Please find DUALPI2 iproute2 patch v8. v8 (09-May-25) - Update pkt_sched.h with the one in nex-next - Correct a typo in the comment within pkt_sched.h (ALOK TIWARI <alok.a.tiwari(a)oracle.com>) - Update manual content in man/man8/tc-dualpi2.8 (ALOK TIWARI <alok.a.tiwari(a)oracle.com>) - Update tc/q_dualpi2.c to fix missing blank lines and add missing case (ALOK TIWARI <alok.a.tiwari(a)oracle.com>) v7 (05-May-25) - Align pkt_sched.h with the v14 version of net-next due to spec modification in tc.yaml - Reorganize dualpi2_print_opt() to match the order in tc.yaml - Remove credit-queue in PRINT_JSON v6 (26-Apr-25) - Update JSON file output due to spec modification in tc.yaml of net-next v5 (25-Mar-25) - Use matches() to replace current strcmp() (Stephen Hemminger <stephen(a)networkplumber.org>) - Use general parse_percent() for handling scaled percentage values (Stephen Hemminger <stephen(a)networkplumber.org>) - Add print function for JSON of dualpi2 stats (Stephen Hemminger <stephen(a)networkplumber.org>) v4 (16-Mar-25) - Add min_qlen_step to the dualpi2 attribute as the minimum queue length in number of packets in the L-queue to start step marking. v3 (21-Feb-25) - Add memlimit to the dualpi2 attribute, and add memory_used, max_memory_used, and memory_limit in dualpi2 stats (Dave Taht <dave.taht(a)gmail.com>) - Update the manual to align with the latest implementation and clarify the queue naming and default unit - Use common "get_scaled_alpha_beta" and clean print_opt for Dualpi2 v2 (23-Oct-24) - Rename get_float in dualpi2 to get_float_min_max in utils.c - Move get_float from iplink_can.c in utils.c (Stephen Hemminger <stephen(a)networkplumber.org>) - Add print function for JSON of dualpi2 (Stephen Hemminger <stephen(a)networkplumber.org>) For more details of DualPI2, please refer IETF RFC9332 (https://datatracker.ietf.org/doc/html/rfc9332). Best Regards, Chia-Yu Chia-Yu Chang (1): tc: add dualpi2 scheduler module bash-completion/tc | 11 +- include/uapi/linux/pkt_sched.h | 68 +++++ include/utils.h | 2 + ip/iplink_can.c | 14 - lib/utils.c | 30 ++ man/man8/tc-dualpi2.8 | 249 +++++++++++++++ tc/Makefile | 1 + tc/q_dualpi2.c | 534 +++++++++++++++++++++++++++++++++ 8 files changed, 894 insertions(+), 15 deletions(-) create mode 100644 man/man8/tc-dualpi2.8 create mode 100644 tc/q_dualpi2.c -- 2.34.1

2 months, 3 weeks

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[PATCH net v2 0/2] Fix ntuple rules targeting default RSS

by Gal Pressman

This series addresses a regression in ethtool flow steering where rules targeting the default RSS context (context 0) were incorrectly rejected. The default RSS context always exists but is not stored in the rss_ctx xarray like additional contexts. The current validation logic was checking for the existence of context 0 in this array, causing valid flow steering rules to be rejected. This prevented configurations such as: - High priority rules directing specific traffic to the default context - Low priority catch-all rules directing remaining traffic to additional contexts Patch 1 fixes the validation logic to skip the existence check for context 0. Patch 2 adds a selftest that verifies this behavior. Changelog - v1->v2: https://lore.kernel.org/all/20250225071348.509432-1-gal@nvidia.com/ * Reworded commit message. * Added a selftest. Gal Pressman (2): net: ethtool: Don't check if RSS context exists in case of context 0 selftests: drv-net: rss_ctx: Add test for ntuple rules targeting default RSS context net/ethtool/ioctl.c | 3 +- .../selftests/drivers/net/hw/rss_ctx.py | 59 ++++++++++++++++++- 2 files changed, 60 insertions(+), 2 deletions(-) -- 2.40.1

2 months, 3 weeks

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[PATCH bpf-next v2 0/2] bpf,ktls: Fix data corruption caused by using bpf_msg_pop_data() in ktls

by Jiayuan Chen

Cong reported an issue where running 'test_sockmap' in the current bpf-next tree results in an error [1]. The specific test case that triggered the error is a combined test involving ktls and bpf_msg_pop_data(). Root Cause: When sending plaintext data, we initially calculated the corresponding ciphertext length. However, if we later reduced the plaintext data length via socket policy, we failed to recalculate the ciphertext length. This results in transmitting buffers containing uninitialized data during ciphertext transmission. This causes uninitialized bytes to be appended after a complete "Application Data" packet, leading to errors on the receiving end when parsing TLS record. This issue has existed for a long time but was only exposed after the following test code was merged. commit 47eae080410b ("selftests/bpf: Add more tests for test_txmsg_push_pop in test_sockmap") Although we already had tests for pop data before this commit, the pop data length was insufficient (less than 5 bytes). This meant that the corrupted TLS records with data length <5 bytes were cached without being parsed, resulting in no error being triggered. After this fix, all tests pass. 1/ 6 sockmap::txmsg test passthrough:OK 2/ 6 sockmap::txmsg test redirect:OK 3/ 2 sockmap::txmsg test redirect wait send mem:OK 4/ 6 sockmap::txmsg test drop:OK 5/ 6 sockmap::txmsg test ingress redirect:OK 6/ 7 sockmap::txmsg test skb:OK 7/12 sockmap::txmsg test apply:OK 8/12 sockmap::txmsg test cork:OK 9/ 3 sockmap::txmsg test hanging corks:OK 10/11 sockmap::txmsg test push_data:OK 11/17 sockmap::txmsg test pull-data:OK 12/ 9 sockmap::txmsg test pop-data:OK 13/ 6 sockmap::txmsg test push/pop data:OK 14/ 1 sockmap::txmsg test ingress parser:OK 15/ 1 sockmap::txmsg test ingress parser2:OK 16/ 6 sockhash::txmsg test passthrough:OK 17/ 6 sockhash::txmsg test redirect:OK 18/ 2 sockhash::txmsg test redirect wait send mem:OK 19/ 6 sockhash::txmsg test drop:OK 20/ 6 sockhash::txmsg test ingress redirect:OK 21/ 7 sockhash::txmsg test skb:OK 22/12 sockhash::txmsg test apply:OK 23/12 sockhash::txmsg test cork:OK 24/ 3 sockhash::txmsg test hanging corks:OK 25/11 sockhash::txmsg test push_data:OK 26/17 sockhash::txmsg test pull-data:OK 27/ 9 sockhash::txmsg test pop-data:OK 28/ 6 sockhash::txmsg test push/pop data:OK 29/ 1 sockhash::txmsg test ingress parser:OK 30/ 1 sockhash::txmsg test ingress parser2:OK 31/ 6 sockhash:ktls:txmsg test passthrough:OK 32/ 6 sockhash:ktls:txmsg test redirect:OK 33/ 2 sockhash:ktls:txmsg test redirect wait send mem:OK 34/ 6 sockhash:ktls:txmsg test drop:OK 35/ 6 sockhash:ktls:txmsg test ingress redirect:OK 36/ 7 sockhash:ktls:txmsg test skb:OK 37/12 sockhash:ktls:txmsg test apply:OK 38/12 sockhash:ktls:txmsg test cork:OK 39/ 3 sockhash:ktls:txmsg test hanging corks:OK 40/11 sockhash:ktls:txmsg test push_data:OK 41/17 sockhash:ktls:txmsg test pull-data:OK 42/ 9 sockhash:ktls:txmsg test pop-data:OK 43/ 6 sockhash:ktls:txmsg test push/pop data:OK 44/ 1 sockhash:ktls:txmsg test ingress parser:OK 45/ 0 sockhash:ktls:txmsg test ingress parser2:OK Pass: 45 Fail: 0 [1]: https://lore.kernel.org/bpf/CAM_iQpU7=4xjbefZoxndKoX9gFFMOe7FcWMq5tHBsymbrn… --- v2 -> v1: Removed WARN_ON() check and added Reviewed-by tag. https://lore.kernel.org/bpf/20250605145529.3q3aqr6iygpa6xg6@gmail.com/ Jiayuan Chen (2): bpf,ktls: Fix data corruption when using bpf_msg_pop_data() in ktls selftests/bpf: Add test to cover ktls with bpf_msg_pop_data net/tls/tls_sw.c | 13 +++ .../selftests/bpf/prog_tests/sockmap_ktls.c | 91 +++++++++++++++++++ .../selftests/bpf/progs/test_sockmap_ktls.c | 4 + 3 files changed, 108 insertions(+) -- 2.47.1

2 months, 3 weeks

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[PATCH] selftests/mm: Skip uprobe vma merge test if uprobes are not enabled

by Pedro Falcato

If uprobes are not enabled, the test currently fails with: 7151 12:46:54.627936 # # # RUN merge.handle_uprobe_upon_merged_vma ... 7152 12:46:54.639014 # # f /sys/bus/event_source/devices/uprobe/type 7153 12:46:54.639306 # # fopen: No such file or directory 7154 12:46:54.650451 # # # merge.c:473:handle_uprobe_upon_merged_vma:Expected read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) (1) == 0 (0) 7155 12:46:54.650730 # # # handle_uprobe_upon_merged_vma: Test terminated by assertion 7156 12:46:54.661750 # # # FAIL merge.handle_uprobe_upon_merged_vma 7157 12:46:54.662030 # # not ok 8 merge.handle_uprobe_upon_merged_vma Skipping is a more sane and friendly behavior here. Fixes: efe99fabeb11b ("selftests/mm: add test about uprobe pte be orphan during vma merge") Reported-by: Aishwarya <aishwarya.tcv(a)arm.com> Closes: https://lore.kernel.org/linux-mm/20250610103729.72440-1-aishwarya.tcv@arm.c… Signed-off-by: Pedro Falcato <pfalcato(a)suse.de> --- tools/testing/selftests/mm/merge.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/merge.c b/tools/testing/selftests/mm/merge.c index bbae66fc5038..cc26480098ae 100644 --- a/tools/testing/selftests/mm/merge.c +++ b/tools/testing/selftests/mm/merge.c @@ -470,7 +470,9 @@ TEST_F(merge, handle_uprobe_upon_merged_vma) ASSERT_GE(fd, 0); ASSERT_EQ(ftruncate(fd, page_size), 0); - ASSERT_EQ(read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type), 0); + if (read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) != 0) { + SKIP(goto out, "Failed to read uprobe sysfs file, skipping"); + } memset(&attr, 0, attr_sz); attr.size = attr_sz; @@ -491,6 +493,7 @@ TEST_F(merge, handle_uprobe_upon_merged_vma) ASSERT_NE(mremap(ptr2, page_size, page_size, MREMAP_MAYMOVE | MREMAP_FIXED, ptr1), MAP_FAILED); +out: close(fd); remove(probe_file); } -- 2.49.0

2 months, 3 weeks

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[PATCH] selftests/mm: Check for YAMA ptrace_scope configuraiton before modifying it

by Mark Brown

When running the memfd_secret test run_vmtests.sh unconditionally tries to confgiure the YAMA LSM's ptrace_scope configuration, leading to an error if YAMA is not in the running kernel: # ./run_vmtests.sh: line 432: /proc/sys/kernel/yama/ptrace_scope: No such file or directory # # ---------------------- # # running ./memfd_secret # # ---------------------- Check that this file is present before trying to write to it. The indentation here is a bit odd, and it doesn't seem great that we configure but don't restore ptrace_scope. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- tools/testing/selftests/mm/run_vmtests.sh | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index dddd1dd8af14..33fc7fafa8f9 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -429,7 +429,9 @@ CATEGORY="vma_merge" run_test ./merge if [ -x ./memfd_secret ] then -(echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix +if [ -f /proc/sys/kernel/yama/ptrace_scope ]; then + (echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix +fi CATEGORY="memfd_secret" run_test ./memfd_secret fi --- base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 change-id: 20250605-selftest-mm-enable-yama-1541c2d2ddcd Best regards, -- Mark Brown <broonie(a)kernel.org>

2 months, 4 weeks

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[PATCH V3 2/2] KVM: selftests: Change MDSCR_EL1 register holding variables as uint64_t

by Anshuman Khandual

Change MDSCR_EL1 register holding local variables as uint64_t that reflects its true register width as well. Cc: Marc Zyngier <maz(a)kernel.org> Cc: Oliver Upton <oliver.upton(a)linux.dev> Cc: Joey Gouly <joey.gouly(a)arm.com> Cc: kvm(a)vger.kernel.org Cc: kvmarm(a)lists.linux.dev Cc: linux-kernel(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: linux-arm-kernel(a)lists.infradead.org Reviewed-by: Ada Couprie Diaz <ada.coupriediaz(a)arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual(a)arm.com> --- tools/testing/selftests/kvm/arm64/debug-exceptions.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/arm64/debug-exceptions.c b/tools/testing/selftests/kvm/arm64/debug-exceptions.c index c7fb55c9135b..e34963956fbc 100644 --- a/tools/testing/selftests/kvm/arm64/debug-exceptions.c +++ b/tools/testing/selftests/kvm/arm64/debug-exceptions.c @@ -140,7 +140,7 @@ static void enable_os_lock(void) static void enable_monitor_debug_exceptions(void) { - uint32_t mdscr; + uint64_t mdscr; asm volatile("msr daifclr, #8"); @@ -223,7 +223,7 @@ void install_hw_bp_ctx(uint8_t addr_bp, uint8_t ctx_bp, uint64_t addr, static void install_ss(void) { - uint32_t mdscr; + uint64_t mdscr; asm volatile("msr daifclr, #8"); -- 2.25.1

2 months, 4 weeks

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[PATCH 0/4] selftests/mm: Tweaks to the cow test

by Mark Brown

A collection of non-functional updates from David Hildenbrand's review. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Mark Brown (4): kselftest/mm: Clarify errors for pipe() selftests/mm: Convert some cow error reports to ksft_perror() selftests/mm: Don't compare return values to in cow selftests/mm: Add messages about test errors to the cow tests tools/testing/selftests/mm/cow.c | 44 +++++++++++++++++++++++++--------------- 1 file changed, 28 insertions(+), 16 deletions(-) --- base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 change-id: 20250603-selftest-mm-cow-tweaks-0199c5132b3e Best regards, -- Mark Brown <broonie(a)kernel.org>

2 months, 4 weeks

2
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[PATCH v3 0/9] selftests: vDSO: Some cleanups and (warning) fixes

by Thomas Weißschuh

Fixes and cleanups for various issues in the vDSO selftests. Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- Changes in v3: - Rebase on v6.16-rc1 - Preserve vgetrandom_put_state() - Pick up vdso_standalone_test_x86 into this series - Link to v2: https://lore.kernel.org/r/20250505-selftests-vdso-fixes-v2-0-3bc86e42f242@l… Changes in v2: - Refer to -Wstrict-prototypes over -Wold-style-prototypes - Pick up Acks - Enable fixed warnings in Makefile - Link to v1: https://lore.kernel.org/r/20250502-selftests-vdso-fixes-v1-0-fb5d640a4f78@l… --- Thomas Weißschuh (9): selftests: vDSO: chacha: Correctly skip test if necessary selftests: vDSO: clock_getres: Drop unused include of err.h selftests: vDSO: vdso_test_getrandom: Drop unused include of linux/compiler.h selftests: vDSO: vdso_test_getrandom: Avoid -Wunused selftests: vDSO: vdso_config: Avoid -Wunused-variables selftests: vDSO: enable -Wall selftests: vDSO: vdso_test_correctness: Fix -Wstrict-prototypes selftests: vDSO: vdso_test_getrandom: Always print TAP header selftests: vDSO: vdso_standalone_test_x86: Replace source file with symlink tools/testing/selftests/vDSO/Makefile | 2 +- tools/testing/selftests/vDSO/vdso_config.h | 2 + .../selftests/vDSO/vdso_standalone_test_x86.c | 59 +--------------------- tools/testing/selftests/vDSO/vdso_test_chacha.c | 3 +- .../selftests/vDSO/vdso_test_clock_getres.c | 1 - .../testing/selftests/vDSO/vdso_test_correctness.c | 2 +- tools/testing/selftests/vDSO/vdso_test_getrandom.c | 10 ++-- 7 files changed, 13 insertions(+), 66 deletions(-) --- base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 change-id: 20250423-selftests-vdso-fixes-d2ce74142359 Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

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Linux-kselftest-mirror June 2025