September 2024 - Linux-kselftest-mirror

[PATCH 0/4] Process some MMIO-related errors without KVM exit

by Ivan Orlov

Currently, KVM may return a variety of internal errors to VMM when accessing MMIO, and some of them could be gracefully handled on the KVM level instead. Moreover, some of the MMIO-related errors are handled differently in VMX in comparison with SVM, which produces certain inconsistency and should be fixed. This patch series introduces KVM-level handling for the following situations: 1) Guest is accessing MMIO during event delivery: triple fault instead of internal error on VMX and infinite loop on SVM 2) Guest fetches an instruction from MMIO: inject #UD and resume guest execution without internal error Additionaly, this patch series includes a KVM selftest which covers different cases of MMIO misuse. Also, update the set_memory_region_test to expect the triple fault when starting VM with no RAM. Ivan Orlov (4): KVM: vmx, svm, mmu: Fix MMIO during event delivery handling KVM: x86: Inject UD when fetching from MMIO selftests: KVM: Change expected exit code in test_zero_memory_regions selftests: KVM: Add new test for faulty mmio usage arch/x86/include/asm/kvm_host.h | 6 + arch/x86/kvm/emulate.c | 3 + arch/x86/kvm/kvm_emulate.h | 1 + arch/x86/kvm/mmu/mmu.c | 13 +- arch/x86/kvm/svm/svm.c | 4 + arch/x86/kvm/vmx/vmx.c | 21 +- arch/x86/kvm/x86.c | 7 +- tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/set_memory_region_test.c | 3 +- .../selftests/kvm/x86_64/faulty_mmio.c | 199 ++++++++++++++++++ 10 files changed, 242 insertions(+), 16 deletions(-) create mode 100644 tools/testing/selftests/kvm/x86_64/faulty_mmio.c -- 2.43.0

2 months, 3 weeks

3
11
0 0

[PATCH 0/2] timers test fix and duplicate defines cleanup

by Shuah Khan

The first patch in this two patch fixes warn_unused_result compile time warning in posix_timers test. The second patch removes local NSEC_PER_SEC and USEC_PER_SEC defines. NSEC_PER_SEC and USEC_PER_SEC are defines in several timers tests. These defines are inconsistent with variations of ULL, LL, etc. without any explanation why it is necessary. These defines can be picked up from include/vdso/time64.h header file. In the interest of making it easier to maintain, remove the local defines. Include include/vdso/time64.h instead. This change will also make the defines consistent. Shuah Khan (2): selftests:timers: posix_timers: Fix warn_unused_result in __fatal_error() selftests: timers: Remove local NSEC_PER_SEC and USEC_PER_SEC defines tools/testing/selftests/timers/Makefile | 2 +- tools/testing/selftests/timers/adjtick.c | 4 +-- .../selftests/timers/alarmtimer-suspend.c | 2 +- .../selftests/timers/inconsistency-check.c | 2 +- tools/testing/selftests/timers/leap-a-day.c | 2 +- tools/testing/selftests/timers/mqueue-lat.c | 2 +- tools/testing/selftests/timers/nanosleep.c | 3 +-- tools/testing/selftests/timers/posix_timers.c | 27 ++++++++++--------- tools/testing/selftests/timers/raw_skew.c | 2 +- tools/testing/selftests/timers/set-2038.c | 3 +-- .../testing/selftests/timers/set-timer-lat.c | 3 +-- .../testing/selftests/timers/valid-adjtimex.c | 4 +-- 12 files changed, 26 insertions(+), 30 deletions(-) -- 2.40.1

2 months, 3 weeks

3
8
0 0

[PATCH v2 0/4] selftsets: gitignore and clean target file additions

by Javier Carrasco

Trivial patches to update the gitignore files unders selftests, and a little addition to EXTRA_CLEAN under net/rds to account for the automatically generated include.sh. Signed-off-by: Javier Carrasco <javier.carrasco.cruz(a)gmail.com> --- Changes in v2: - [PATCH 4/4] add excepction for load_address.c (must be tracked). - Link to v1: https://lore.kernel.org/r/20240924-selftests-gitignore-v1-0-9755ac883388@gm… --- Javier Carrasco (4): selftests: add unshare_test and msg_oob to gitignore selftests: rds: add include.sh to EXTRA_CLEAN selftests: rds: add gitignore file for include.sh selftests: exec: update gitignore for load_address tools/testing/selftests/core/.gitignore | 1 + tools/testing/selftests/exec/.gitignore | 3 ++- tools/testing/selftests/net/.gitignore | 1 + tools/testing/selftests/net/rds/.gitignore | 1 + tools/testing/selftests/net/rds/Makefile | 2 +- 5 files changed, 6 insertions(+), 2 deletions(-) --- base-commit: 4d0326b60bb753627437fff0f76bf1525bcda422 change-id: 20240924-selftests-gitignore-e41133e6c5bd Best regards, -- Javier Carrasco <javier.carrasco.cruz(a)gmail.com>

2 months, 3 weeks

3
7
0 0

[PATCH net] selftests/net: packetdrill: increase timing tolerance in debug mode

by Willem de Bruijn

From: Willem de Bruijn <willemb(a)google.com> Some packetdrill tests are flaky in debug mode. As discussed, increase tolerance. We have been doing this for debug builds outside ksft too. Previous setting was 10000. A manual 50 runs in virtme-ng showed two failures that needed 12000. To be on the safe side, Increase to 14000. Link: https://lore.kernel.org/netdev/Zuhhe4-MQHd3EkfN@mini-arch/ Fixes: 1e42f73fd3c2 ("selftests/net: packetdrill: import tcp/zerocopy") Reported-by: Stanislav Fomichev <sdf(a)fomichev.me> Signed-off-by: Willem de Bruijn <willemb(a)google.com> --- tools/testing/selftests/net/packetdrill/ksft_runner.sh | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/packetdrill/ksft_runner.sh b/tools/testing/selftests/net/packetdrill/ksft_runner.sh index 7478c0c0c9aa..4071c133f29e 100755 --- a/tools/testing/selftests/net/packetdrill/ksft_runner.sh +++ b/tools/testing/selftests/net/packetdrill/ksft_runner.sh @@ -30,12 +30,17 @@ if [ -z "$(which packetdrill)" ]; then exit "$KSFT_SKIP" fi +declare -a optargs +if [[ -n "${KSFT_MACHINE_SLOW}" ]]; then + optargs+=('--tolerance_usecs=14000') +fi + ktap_print_header ktap_set_plan 2 -unshare -n packetdrill ${ipv4_args[@]} $(basename $script) > /dev/null \ +unshare -n packetdrill ${ipv4_args[@]} ${optargs[@]} $(basename $script) > /dev/null \ && ktap_test_pass "ipv4" || ktap_test_fail "ipv4" -unshare -n packetdrill ${ipv6_args[@]} $(basename $script) > /dev/null \ +unshare -n packetdrill ${ipv6_args[@]} ${optargs[@]} $(basename $script) > /dev/null \ && ktap_test_pass "ipv6" || ktap_test_fail "ipv6" ktap_finished -- 2.46.0.662.g92d0881bb0-goog

2 months, 3 weeks

6
7
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[RFC PATCH v1 0/2] Allow the RAS feature bit in ID_AA64PFR0_EL1 writable from userspace

by Shaoqin Huang

Currently the RAS feature bit is not writable in ID_AA64PFR0EL1, this makes migration fail when migration from the machine which RAS is 1 to another machine which RAS is 2. Allow RAS writable from userspace would make the migration possible between two machines which RAS is different. Shaoqin Huang (2): KVM: arm64: Use kvm_has_feat() to check if FEAT_RAS is advertised to the guest KVM: arm64: Allow the RAS feature bit in ID_AA64PFR0_EL1 writable from userspace arch/arm64/kvm/guest.c | 4 ++-- arch/arm64/kvm/handle_exit.c | 2 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 2 +- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 7 +++++-- arch/arm64/kvm/sys_regs.c | 3 +-- tools/testing/selftests/kvm/aarch64/set_id_regs.c | 1 + 6 files changed, 11 insertions(+), 8 deletions(-) -- 2.40.1

2 months, 3 weeks

2
2
0 0

[PATCH] Fix issue related with assigning two diffrent vids to the same interface.

by Kacper Ludwinski

Fixes: 476a4f0 ("selftests: forwarding: add a no_forwarding.sh test") Signed-off-by: Kacper Ludwinski <kacper(a)ludwinski.dev> --- tools/testing/selftests/net/forwarding/no_forwarding.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/forwarding/no_forwarding.sh b/tools/testing/selftests/net/forwarding/no_forwarding.sh index 9e677aa64a06..694ece9ba3a7 100755 --- a/tools/testing/selftests/net/forwarding/no_forwarding.sh +++ b/tools/testing/selftests/net/forwarding/no_forwarding.sh @@ -202,7 +202,7 @@ one_bridge_two_pvids() ip link set $swp2 master br0 bridge vlan add dev $swp1 vid 1 pvid untagged - bridge vlan add dev $swp1 vid 2 pvid untagged + bridge vlan add dev $swp2 vid 2 pvid untagged run_test "Switch ports in VLAN-aware bridge with different PVIDs" -- 2.43.0

2 months, 3 weeks

3
3
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[PATCH 0/4] selftsets: gitignore and clean target file additions

by Javier Carrasco

Trivial patches to update the gitignore files unders selftests, and a little addition to EXTRA_CLEAN under net/rds to account for the automatically generated include.sh. Signed-off-by: Javier Carrasco <javier.carrasco.cruz(a)gmail.com> --- Javier Carrasco (4): selftests: add unshare_test and msg_oob to gitignore selftests: rds: add include.sh to EXTRA_CLEAN selftests: rds: add gitignore file for include.sh selftests: exec: update gitignore for load_address tools/testing/selftests/core/.gitignore | 1 + tools/testing/selftests/exec/.gitignore | 2 +- tools/testing/selftests/net/.gitignore | 1 + tools/testing/selftests/net/rds/.gitignore | 1 + tools/testing/selftests/net/rds/Makefile | 2 +- 5 files changed, 5 insertions(+), 2 deletions(-) --- base-commit: 4d0326b60bb753627437fff0f76bf1525bcda422 change-id: 20240924-selftests-gitignore-e41133e6c5bd Best regards, -- Javier Carrasco <javier.carrasco.cruz(a)gmail.com>

2 months, 4 weeks

4
10
0 0

[PATCH] clone3: clone3_cap_checkpoint_restore: remove unused MAX_PID_NS_LEVEL macro

by Ba Jing

The macro MAX_PID_NS_LEVEL is never referenced in the code, so remove it. Signed-off-by: Ba Jing <bajing(a)cmss.chinamobile.com> --- tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c b/tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c index 31b56d625655..3c196fa86c99 100644 --- a/tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c +++ b/tools/testing/selftests/clone3/clone3_cap_checkpoint_restore.c @@ -27,8 +27,6 @@ #include "../kselftest_harness.h" #include "clone3_selftests.h" -#define MAX_PID_NS_LEVEL 32 - static void child_exit(int ret) { fflush(stdout); -- 2.33.0

2 months, 4 weeks

3
2
0 0

[PATCH] memfd: fuse_mnt: remove unused macro

by Ba Jing

The macro FUSE_USE_VERSION is never referenced in the code, just remove it. Signed-off-by: Ba Jing <bajing(a)cmss.chinamobile.com> --- tools/testing/selftests/memfd/fuse_mnt.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/testing/selftests/memfd/fuse_mnt.c b/tools/testing/selftests/memfd/fuse_mnt.c index 6936f2a001f3..f9f06fd43c5f 100644 --- a/tools/testing/selftests/memfd/fuse_mnt.c +++ b/tools/testing/selftests/memfd/fuse_mnt.c @@ -12,8 +12,6 @@ * file-system. */ -#define FUSE_USE_VERSION 26 - #include <fuse.h> #include <stdio.h> #include <string.h> -- 2.33.0

2 months, 4 weeks

3
2
0 0

[PATCH AUTOSEL 6.6 071/139] selftests/nolibc: avoid passing NULL to printf("%s")

by Sasha Levin

From: Thomas Weißschuh <linux(a)weissschuh.net> [ Upstream commit f1a58f61d88642ae1e6e97e9d72d73bc70a93cb8 ] Clang on higher optimization levels detects that NULL is passed to printf("%s") and warns about it. While printf() from nolibc gracefully handles that NULL, it is undefined behavior as per POSIX, so the warning is reasonable. Avoid the warning by transforming NULL into a non-NULL placeholder. Reviewed-by: Shuah Khan <skhan(a)linuxfoundation.org> Acked-by: Willy Tarreau <w(a)1wt.eu> Link: https://lore.kernel.org/r/20240807-nolibc-llvm-v2-8-c20f2f5fc7c2@weissschuh… Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/nolibc/nolibc-test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c index 1fc4998f06bf6..4aaafbfc2f973 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -522,7 +522,7 @@ int expect_strzr(const char *expr, int llen) { int ret = 0; - llen += printf(" = <%s> ", expr); + llen += printf(" = <%s> ", expr ? expr : "(null)"); if (expr) { ret = 1; result(llen, FAIL); @@ -541,7 +541,7 @@ int expect_strnz(const char *expr, int llen) { int ret = 0; - llen += printf(" = <%s> ", expr); + llen += printf(" = <%s> ", expr ? expr : "(null)"); if (!expr) { ret = 1; result(llen, FAIL); -- 2.43.0

2 months, 4 weeks

1
0
0 0

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Linux-kselftest-mirror September 2024