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[PATCH 0/5] selftests/mm: Implement support for arm64 on va

by Chaitanya S Prakash

The va_128TBswitch selftest is designed and implemented for PowerPC and x86 architectures which support a 128TB switch, up to 256TB of virtual address space and hugepage sizes of 16MB and 2MB respectively. Arm64 platforms on the other hand support a 256Tb switch, up to 4PB of virtual address space and a default hugepage size of 512MB when 64k pagesize is enabled. These architectural differences require introducing support for arm64 platforms, after which a more generic naming convention is suggested. The in code comments are amended to provide a more platform independent explanation of the working of the code and nr_hugepages are configured as required. Finally, the file running the testcase is modified in order to prevent skipping of hugetlb testcases of va_high_addr_switch. This series has been tested on 6.3.0-rc3 kernel, both on arm64 and x86 platforms. Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Aneesh Kumar K.V <aneesh.kumar(a)linux.ibm.com> Cc: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: linux-mm(a)kvack.org Cc: linux-kselftest(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Chaitanya S Prakash (5): selftests/mm: Add support for arm64 platform on va switch selftests/mm: Rename va_128TBswitch to va_high_addr_switch selftests/mm: Add platform independent in code comments selftests/mm: Configure nr_hugepages for arm64 selftests/mm: Run hugetlb testcases of va switch tools/testing/selftests/mm/Makefile | 4 +- tools/testing/selftests/mm/run_vmtests.sh | 12 +++++- ...va_128TBswitch.c => va_high_addr_switch.c} | 41 +++++++++++++++---- ..._128TBswitch.sh => va_high_addr_switch.sh} | 6 ++- 4 files changed, 49 insertions(+), 14 deletions(-) rename tools/testing/selftests/mm/{va_128TBswitch.c => va_high_addr_switch.c} (86%) rename tools/testing/selftests/mm/{va_128TBswitch.sh => va_high_addr_switch.sh} (89%) -- 2.30.2

2 years, 5 months

5
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Re: [BUG RESEND] [BISECTED]: selftest: ftracetest: memleak in vfs_write()

by Mirsad Goran Todorovac

Hi, No progress on this bug report, so it is still unpatched in 6.3-rc5 so I am submitting again. Please see the relevant data at the bottom: On 27. 01. 2023. 19:36, Mirsad Goran Todorovac wrote: > Hi all, > > I came across a memory leak with the vanilla mainline Torvalds tree kernel > with MGLRU and CONFIG_KMEMLEAK enabled: > > unreferenced object 0xffff8d7c92ad5180 (size 192): > comm "ftracetest", pid 2738512, jiffies 4335176273 (age 4842.976s) > hex dump (first 32 bytes): > c0 59 ad 92 7c 8d ff ff 60 dd d7 31 7c 8d ff ff .Y..|...`..1|... > 60 55 df 97 ff ff ff ff 09 00 02 00 00 00 00 00 `U.............. > backtrace: > [<ffffffff965d9bf0>] __kmem_cache_alloc_node+0x1e0/0x340 > [<ffffffff96556dda>] kmalloc_trace+0x2a/0xa0 > [<ffffffff964382fc>] tracing_log_err+0x16c/0x1b0 > [<ffffffff96451963>] append_filter_err+0x113/0x1d0 > [<ffffffff96453c0a>] create_event_filter+0xba/0xe0 > [<ffffffff96454b18>] set_trigger_filter+0x98/0x160 > [<ffffffff96456554>] event_trigger_parse+0x104/0x180 > [<ffffffff96455823>] trigger_process_regex+0xc3/0x110 > [<ffffffff964558f7>] event_trigger_write+0x77/0xe0 > [<ffffffff96623a41>] vfs_write+0xd1/0x420 > [<ffffffff9662413b>] ksys_write+0x7b/0x100 > [<ffffffff966241e9>] __x64_sys_write+0x19/0x20 > [<ffffffff971c9188>] do_syscall_64+0x58/0x80 > [<ffffffff972000aa>] entry_SYSCALL_64_after_hwframe+0x72/0xdc > unreferenced object 0xffff8d7b076be000 (size 32): > comm "ftracetest", pid 2738512, jiffies 4335176273 (age 4842.976s) > hex dump (first 32 bytes): > 0a 20 20 43 6f 6d 6d 61 6e 64 3a 20 61 0a 00 00 . Command: a... > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [<ffffffff965d9bf0>] __kmem_cache_alloc_node+0x1e0/0x340 > [<ffffffff96557a8d>] __kmalloc+0x4d/0xd0 > [<ffffffff96438314>] tracing_log_err+0x184/0x1b0 > [<ffffffff96451963>] append_filter_err+0x113/0x1d0 > [<ffffffff96453c0a>] create_event_filter+0xba/0xe0 > [<ffffffff96454b18>] set_trigger_filter+0x98/0x160 > [<ffffffff96456554>] event_trigger_parse+0x104/0x180 > [<ffffffff96455823>] trigger_process_regex+0xc3/0x110 > [<ffffffff964558f7>] event_trigger_write+0x77/0xe0 > [<ffffffff96623a41>] vfs_write+0xd1/0x420 > [<ffffffff9662413b>] ksys_write+0x7b/0x100 > [<ffffffff966241e9>] __x64_sys_write+0x19/0x20 > [<ffffffff971c9188>] do_syscall_64+0x58/0x80 > [<ffffffff972000aa>] entry_SYSCALL_64_after_hwframe+0x72/0xdc > unreferenced object 0xffff8d7c92ad59c0 (size 192): > comm "ftracetest", pid 2738512, jiffies 4335176280 (age 4843.088s) > hex dump (first 32 bytes): > c0 5c ad 92 7c 8d ff ff 80 51 ad 92 7c 8d ff ff .\..|....Q..|... > 60 55 df 97 ff ff ff ff 01 00 0b 00 00 00 00 00 `U.............. > backtrace: > [<ffffffff965d9bf0>] __kmem_cache_alloc_node+0x1e0/0x340 > [<ffffffff96556dda>] kmalloc_trace+0x2a/0xa0 > [<ffffffff964382fc>] tracing_log_err+0x16c/0x1b0 > [<ffffffff96451963>] append_filter_err+0x113/0x1d0 > [<ffffffff96453c0a>] create_event_filter+0xba/0xe0 > [<ffffffff96454b18>] set_trigger_filter+0x98/0x160 > [<ffffffff96456554>] event_trigger_parse+0x104/0x180 > [<ffffffff96455823>] trigger_process_regex+0xc3/0x110 > [<ffffffff964558f7>] event_trigger_write+0x77/0xe0 > [<ffffffff96623a41>] vfs_write+0xd1/0x420 > [<ffffffff9662413b>] ksys_write+0x7b/0x100 > [<ffffffff966241e9>] __x64_sys_write+0x19/0x20 > [<ffffffff971c9188>] do_syscall_64+0x58/0x80 > [<ffffffff972000aa>] entry_SYSCALL_64_after_hwframe+0x72/0xdc > > The bug was noticed on Lenovo desktop 10TX000VCR (LENOVO_MT_10TX_BU_Lenovo_FM_V530S-07ICB) > running AlmaLinux 8.7 (Stone Smilodon), a CentOS clone, with the compiler: > > mtodorov@domac:~/linux/kernel/linux_torvalds$ gcc --version > gcc (Debian 8.3.0-6) 8.3.0 > Copyright (C) 2018 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > mtodorov@domac:~/linux/kernel/linux_torvalds$ > > Bisecting gave the following culprit commit: > > git bisect good a92ce570c81dc0feaeb12a429b4bc65686d17967 > # good: [c6f613e5f35b0e2154d5ca12f0e8e0be0c19be9a] ipmi/watchdog: use strscpy() to instead of strncpy() > git bisect good c6f613e5f35b0e2154d5ca12f0e8e0be0c19be9a > # good: [90b12f423d3c8a89424c7bdde18e1923dfd0941e] Merge tag 'for-linus-6.2-1' of https://github.com/cminyard/linux-ipmi > git bisect good 90b12f423d3c8a89424c7bdde18e1923dfd0941e > # first bad commit: [71946a25f357a51dcce849367501d7fb04c0465b] Merge tag 'mmc-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc > > The commit was merged on December 13th 2022. > > It is a huge commit. > > The selftests/ftrace/ftracetest triggers this leak, sometimes several times in a run. > ftracetest requires root permission to run, but I haven't yet realised whether a non-superuser > could devise an automated script to abuse this leak exhausting all kernel's memory. > > Non-root user gets a EPERM error when trying to access /proc/sys/kernel internals: > > [marvin@pc-mtodorov linux_torvalds]$ tools/testing/selftests/ftrace/ftracetest > Error: this must be run by root user > tools/testing/selftests/ftrace/ftracetest: line 46: /proc/sys/kernel/sched_rt_runtime_us: Permission denied > [marvin@pc-mtodorov linux_torvalds]$ > > Hope this helps. > > According to the Code of Conduct, I have Cc:-ed maintainers from get_maintainers.pl and > I will add Thorsten because this is sort of a regression :-) The debug output is like follows: unreferenced object 0xffff93a3dc2d1e18 (size 192): comm "ftracetest", pid 12451, jiffies 4295087353 (age 463.476s) hex dump (first 32 bytes): 20 08 2d dc a3 93 ff ff c0 bd 5d cd a3 93 ff ff .-.......]..... c0 bf 85 b6 ff ff ff ff 09 00 02 00 00 00 00 00 ................ backtrace: [<ffffffffb4afb23c>] slab_post_alloc_hook+0x8c/0x3e0 [<ffffffffb4b02b19>] __kmem_cache_alloc_node+0x1d9/0x2a0 [<ffffffffb4a7693e>] kmalloc_trace+0x2e/0xc0 [<ffffffffb493a8fb>] tracing_log_err+0x18b/0x1d0 [<ffffffffb4959049>] append_filter_err.isra.13+0x119/0x190 [<ffffffffb495a89f>] create_filter+0xbf/0xe0 [<ffffffffb495ab10>] create_event_filter+0x10/0x20 [<ffffffffb495c040>] set_trigger_filter+0xa0/0x180 [<ffffffffb495d745>] event_trigger_parse+0xf5/0x160 [<ffffffffb495c889>] trigger_process_regex+0xc9/0x120 [<ffffffffb495c976>] event_trigger_write+0x86/0xf0 [<ffffffffb4b52dc2>] vfs_write+0xf2/0x520 [<ffffffffb4b533d8>] ksys_write+0x68/0xe0 [<ffffffffb4b5347e>] __x64_sys_write+0x1e/0x30 [<ffffffffb586619c>] do_syscall_64+0x5c/0x90 [<ffffffffb5a000ae>] entry_SYSCALL_64_after_hwframe+0x72/0xdc unreferenced object 0xffff93a3873dda20 (size 32): comm "ftracetest", pid 12451, jiffies 4295087353 (age 463.476s) hex dump (first 32 bytes): 0a 20 20 43 6f 6d 6d 61 6e 64 3a 20 61 0a 00 00 . Command: a... 00 00 cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................ backtrace: [<ffffffffb4afb23c>] slab_post_alloc_hook+0x8c/0x3e0 [<ffffffffb4b02b19>] __kmem_cache_alloc_node+0x1d9/0x2a0 [<ffffffffb4a77785>] __kmalloc+0x55/0x160 [<ffffffffb493a913>] tracing_log_err+0x1a3/0x1d0 [<ffffffffb4959049>] append_filter_err.isra.13+0x119/0x190 [<ffffffffb495a89f>] create_filter+0xbf/0xe0 [<ffffffffb495ab10>] create_event_filter+0x10/0x20 [<ffffffffb495c040>] set_trigger_filter+0xa0/0x180 [<ffffffffb495d745>] event_trigger_parse+0xf5/0x160 [<ffffffffb495c889>] trigger_process_regex+0xc9/0x120 [<ffffffffb495c976>] event_trigger_write+0x86/0xf0 [<ffffffffb4b52dc2>] vfs_write+0xf2/0x520 [<ffffffffb4b533d8>] ksys_write+0x68/0xe0 [<ffffffffb4b5347e>] __x64_sys_write+0x1e/0x30 [<ffffffffb586619c>] do_syscall_64+0x5c/0x90 [<ffffffffb5a000ae>] entry_SYSCALL_64_after_hwframe+0x72/0xdc Please find the complete debug info at the URL: https://domac.alu.unizg.hr/~mtodorov/linux/bugreports/ftracetest/ Bisect log is [edited]: > git bisect good a92ce570c81dc0feaeb12a429b4bc65686d17967 > # good: [c6f613e5f35b0e2154d5ca12f0e8e0be0c19be9a] ipmi/watchdog: use strscpy() to instead of strncpy() > git bisect good c6f613e5f35b0e2154d5ca12f0e8e0be0c19be9a > # good: [90b12f423d3c8a89424c7bdde18e1923dfd0941e] Merge tag 'for-linus-6.2-1' of https://github.com/cminyard/linux-ipmi > git bisect good 90b12f423d3c8a89424c7bdde18e1923dfd0941e > # first bad commit: [71946a25f357a51dcce849367501d7fb04c0465b] Merge tag 'mmc-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc > > The commit was merged on December 13th 2022. The amount of applied diffs in the culprit commit 71946a25f357a51dcce849367501d7fb04c0465b prevents me from bisecting further - I do not know which changes depend of which, and which can be tested independently. Hopefully I might come up with a reproducer, but I need some feedback first. Maybe there are ways to narrow down the lines of code that could have caused the leaks, yet I am completely new to the kernel/trace subtree. Apologies for not Cc:ing Ulf nine weeks ago, but it was an omission, not deliberate act. Best regards, Mirsad -- Mirsad Goran Todorovac Sistem inženjer Grafički fakultet | Akademija likovnih umjetnosti Sveučilište u Zagrebu System engineer Faculty of Graphic Arts | Academy of Fine Arts University of Zagreb, Republic of Croatia The European Union "I see something approaching fast ... Will it be friends with me?"

2 years, 5 months

3
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Kernel panic, CONFIG_FIPS_SIGNATURE_SELFTEST, missing dependency

by Kernel.org Bugbot

o6irnndpcv7 writes via Kernel.org Bugzilla: Hello and good day! I think I found a missing dependency. In case of setting CONFIG_FIPS_SIGNATURE_SELFTEST, CONFIG_CRYPTO_SHA256 also needs to be set. But not as module. Failing to do so results in an early kernel panic during boot. Tested on linux-6.1.12-gentoo and linux-6.1.19-gentoo. Thanks, sephora View: https://bugzilla.kernel.org/show_bug.cgi?id=217293#c0 You can reply to this message to join the discussion. -- Deet-doot-dot, I am a bot. Kernel.org Bugzilla (peebz 0.1)

2 years, 5 months

2
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[PATCH v1 0/3] TDX Guest Quote generation support

by Kuppuswamy Sathyanarayanan

Hi All, In TDX guest, the attestation process is used to verify the TDX guest trustworthiness to other entities before provisioning secrets to the guest. The TDX guest attestation process consists of two steps: 1. TDREPORT generation 2. Quote generation. The First step (TDREPORT generation) involves getting the TDX guest measurement data in the format of TDREPORT which is further used to validate the authenticity of the TDX guest. The second step involves sending the TDREPORT to a Quoting Enclave (QE) server to generate a remotely verifiable Quote. TDREPORT by design can only be verified on the local platform. To support remote verification of the TDREPORT, TDX leverages Intel SGX Quoting Enclave to verify the TDREPORT locally and convert it to a remotely verifiable Quote. Although attestation software can use communication methods like TCP/IP or vsock to send the TDREPORT to QE, not all platforms support these communication models. So TDX GHCI specification [1] defines a method for Quote generation via hypercalls. Please check the discussion from Google [2] and Alibaba [3] which clarifies the need for hypercall based Quote generation support. This patch set adds this support. Support for TDREPORT generation already exists in the TDX guest driver. This patchset extends the same driver to add the Quote generation support. Following are the details of the patch set: Patch 1/3 -> Adds event notification IRQ support. Patch 2/3 -> Adds Quote generation support. Patch 3/3 -> Adds selftest support for Quote generation feature. [1] https://cdrdv2.intel.com/v1/dl/getContent/726790, section titled "TDG.VP.VMCALL<GetQuote>". [2] https://lore.kernel.org/lkml/CAAYXXYxxs2zy_978GJDwKfX5Hud503gPc8=1kQ-+JwG_k… [3] https://lore.kernel.org/lkml/a69faebb-11e8-b386-d591-dbd08330b008@linux.ali… Kuppuswamy Sathyanarayanan (3): x86/tdx: Add TDX Guest event notify interrupt support virt: tdx-guest: Add Quote generation support selftests/tdx: Test GetQuote TDX attestation feature Documentation/virt/coco/tdx-guest.rst | 11 + arch/x86/coco/tdx/tdx.c | 203 +++++++++++++++ arch/x86/include/asm/tdx.h | 8 + drivers/virt/coco/tdx-guest/tdx-guest.c | 249 ++++++++++++++++++- include/uapi/linux/tdx-guest.h | 44 ++++ tools/testing/selftests/tdx/tdx_guest_test.c | 68 ++++- 6 files changed, 575 insertions(+), 8 deletions(-) -- 2.34.1

2 years, 5 months

8
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[PATCH bpf] selftests: xsk: Disable IPv6 on VETH1

by Kal Conley

This change fixes flakiness in the BIDIRECTIONAL test: # [is_pkt_valid] expected length [60], got length [90] not ok 1 FAIL: SKB BUSY-POLL BIDIRECTIONAL When IPv6 is enabled, the interface will periodically send MLDv1 and MLDv2 packets. These packets can cause the BIDIRECTIONAL test to fail since it uses VETH0 for RX. For other tests, this was not a problem since they only receive on VETH1 and IPv6 was already disabled on VETH0. Fixes: a89052572ebb ("selftests/bpf: Xsk selftests framework") Signed-off-by: Kal Conley <kal.conley(a)dectris.com> --- tools/testing/selftests/bpf/test_xsk.sh | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh index b077cf58f825..377fb157a57c 100755 --- a/tools/testing/selftests/bpf/test_xsk.sh +++ b/tools/testing/selftests/bpf/test_xsk.sh @@ -116,6 +116,7 @@ setup_vethPairs() { ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4 if [ -f /proc/net/if_inet6 ]; then echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6 + echo 1 > /proc/sys/net/ipv6/conf/${VETH1}/disable_ipv6 fi if [[ $verbose -eq 1 ]]; then echo "setting up ${VETH1}" -- 2.39.2

2 years, 5 months

2
1
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[RESEND PATCH] selftest/vmx_nested_tsc_scaling_test: fix fp leak

by Hao Ge

Fix stable_tsc_check_supported fopen but not fclose Signed-off-by: Hao Ge <gehao(a)kylinos.cn> --- .../selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c index d427eb146bc5..fa03c8d1ce4e 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c @@ -126,12 +126,16 @@ static void stable_tsc_check_supported(void) goto skip_test; if (fgets(buf, sizeof(buf), fp) == NULL) - goto skip_test; + goto close_fp; if (strncmp(buf, "tsc", sizeof(buf))) - goto skip_test; + goto close_fp; + fclose(fp); return; + +close_fp: + fclose(fp); skip_test: print_skip("Kernel does not use TSC clocksource - assuming that host TSC is not stable"); exit(KSFT_SKIP); -- 2.25.1 No virus found Checked by Hillstone Network AntiVirus

2 years, 5 months

2
1
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[PATCH 0/4] Fix three syzkaller splats in iommufd

by Jason Gunthorpe

All related to the pages code, and the latter are reproducible with a simple test. Jason Gunthorpe (4): iommufd: Check for uptr overflow iommufd: Fix unpinning of pages when an access is present iommufd: Do not corrupt the pfn list when doing batch carry iommufd/selftest: Cover domain unmap with huge pages and access drivers/iommu/iommufd/pages.c | 16 ++++++++++-- tools/testing/selftests/iommu/iommufd.c | 34 +++++++++++++++++++++++++ 2 files changed, 48 insertions(+), 2 deletions(-) base-commit: 9c7d518b9b71f4d5ca3d12952cda3417ac6126c4 -- 2.40.0

2 years, 5 months

3
14
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W sprawie samochodu

by Krystian Wieczorek

Dzień dobry, chcielibyśmy zapewnić Państwu kompleksowe rozwiązania, jeśli chodzi o system monitoringu GPS. Precyzyjne monitorowanie pojazdów na mapach cyfrowych, śledzenie ich parametrów eksploatacyjnych w czasie rzeczywistym oraz kontrola paliwa to kluczowe funkcjonalności naszego systemu. Organizowanie pracy pracowników jest dzięki temu prostsze i bardziej efektywne, a oszczędności i optymalizacja w zakresie ponoszonych kosztów, mają dla każdego przedsiębiorcy ogromne znaczenie. Dopasujemy naszą ofertę do Państwa oczekiwań i potrzeb organizacji. Czy moglibyśmy porozmawiać o naszej propozycji? Pozdrawiam Krystian Wieczorek

2 years, 5 months

1
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[PATCH] selftests/mm: fix resource leaks in child_vmsplice_memcmp_fn

by Feng Jiang

When the function returns, the 'new' and 'old' are not freed and the 'fds[]' are not closed, which can lead to resource leaks. Signed-off-by: Feng Jiang <jiangfeng(a)kylinos.cn> Suggested-by: Ming Xie <xieming(a)kylinos.cn> --- tools/testing/selftests/mm/cow.c | 43 ++++++++++++++++++++++++-------- 1 file changed, 32 insertions(+), 11 deletions(-) diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c index c0dd2dfca51b..b8aec05d56f4 100644 --- a/tools/testing/selftests/mm/cow.c +++ b/tools/testing/selftests/mm/cow.c @@ -193,26 +193,38 @@ static int child_vmsplice_memcmp_fn(char *mem, size_t size, char *old, *new; int fds[2]; char buf; + int ret; old = malloc(size); new = malloc(size); + if (!old || !new) { + ret = -ENOMEM; + goto free; + } /* Backup the original content. */ memcpy(old, mem, size); - if (pipe(fds) < 0) - return -errno; + if (pipe(fds) < 0) { + ret = -errno; + goto free; + } /* Trigger a read-only pin. */ transferred = vmsplice(fds[1], &iov, 1, 0); - if (transferred < 0) - return -errno; - if (transferred == 0) - return -EINVAL; + if (transferred < 0) { + ret = -errno; + goto close_pipe; + } else if (transferred == 0) { + ret = -EINVAL; + goto close_pipe; + } /* Unmap it from our page tables. */ - if (munmap(mem, size) < 0) - return -errno; + if (munmap(mem, size) < 0) { + ret = -errno; + goto close_pipe; + } /* Wait until the parent modified it. */ write(comm_pipes->child_ready[1], "0", 1); @@ -222,11 +234,20 @@ static int child_vmsplice_memcmp_fn(char *mem, size_t size, /* See if we still read the old values via the pipe. */ for (total = 0; total < transferred; total += cur) { cur = read(fds[0], new + total, transferred - total); - if (cur < 0) - return -errno; + if (cur < 0) { + ret = -errno; + goto close_pipe; + } } - return memcmp(old, new, transferred); + ret = memcmp(old, new, transferred); +close_pipe: + close(fds[0]); + close(fds[1]); +free: + free(old); + free(new); + return ret; } typedef int (*child_fn)(char *mem, size_t size, struct comm_pipes *comm_pipes); -- 2.39.2

2 years, 5 months

2
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[PATCH bpf-next 2/2] selftests: xsk: Add test case for packets at end of UMEM

by Kal Conley

Add test case to testapp_invalid_desc for valid packets at the end of the UMEM. Signed-off-by: Kal Conley <kal.conley(a)dectris.com> --- tools/testing/selftests/bpf/xskxceiver.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c index 3956f5db84f3..34a1f32fe752 100644 --- a/tools/testing/selftests/bpf/xskxceiver.c +++ b/tools/testing/selftests/bpf/xskxceiver.c @@ -1662,6 +1662,8 @@ static void testapp_invalid_desc(struct test_spec *test) {-2, PKT_SIZE, 0, false}, /* Packet too large */ {0x2000, XSK_UMEM__INVALID_FRAME_SIZE, 0, false}, + /* Up to end of umem allowed */ + {umem_size - PKT_SIZE, PKT_SIZE, 0, true}, /* After umem ends */ {umem_size, PKT_SIZE, 0, false}, /* Straddle the end of umem */ @@ -1675,16 +1677,17 @@ static void testapp_invalid_desc(struct test_spec *test) if (test->ifobj_tx->umem->unaligned_mode) { /* Crossing a page boundrary allowed */ - pkts[6].valid = true; + pkts[7].valid = true; } if (test->ifobj_tx->umem->frame_size == XSK_UMEM__DEFAULT_FRAME_SIZE / 2) { /* Crossing a 2K frame size boundrary not allowed */ - pkts[7].valid = false; + pkts[8].valid = false; } if (test->ifobj_tx->shared_umem) { pkts[4].addr += umem_size; pkts[5].addr += umem_size; + pkts[6].addr += umem_size; } pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts)); -- 2.39.2

2 years, 5 months

2
1
0 0

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