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Message-ID: <20191027050216.GF29418@shao2-debian>
Date: Sun, 27 Oct 2019 13:02:16 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Andrii Nakryiko <andriin@...com>
Cc: Daniel Borkmann <daniel@...earbox.net>,
John Fastabend <john.fastabend@...il.com>,
Song Liu <songliubraving@...com>,
LKML <linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...ts.01.org
Subject: [selftests/bpf] 694731e8ea:
stderr.progs/test_core_reloc_ints.c:#:#:note:expanded_from_macro'CORE_READ'
FYI, we noticed the following commit (built with gcc-7):
commit: 694731e8ea7f6bbcf0c57763ed4f24faa14bf056 ("selftests/bpf: Adjust CO-RE reloc tests for new bpf_core_read() macro")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: bpf_offload
with following parameters:
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
[ 67.448792] make -C ../../../lib/bpf OUTPUT=/usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/
[ 67.448797]
[ 67.463459] make[1]: Entering directory '/usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/lib/bpf'
[ 67.463464]
[ 67.471973]
[ 67.476035] Auto-detecting system features:
[ 67.476038]
[ 67.483470]
[ 67.491351]
[ 67.497070]
[ 67.506199] HOSTCC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/fixdep.o
[ 67.506204]
[ 67.521185] HOSTLD /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/fixdep-in.o
[ 67.521189]
[ 67.536974] LINK /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/fixdep
[ 67.536979]
[ 67.551358] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf.o
[ 67.551363]
[ 67.565995] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/bpf.o
[ 67.566001]
[ 67.580663] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/nlattr.o
[ 67.580667]
[ 67.595085] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/btf.o
[ 67.595089]
[ 67.608038] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf_errno.o
[ 67.608043]
[ 67.623205] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/str_error.o
[ 67.623209]
[ 67.637249] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/netlink.o
[ 67.637254]
[ 67.652189] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/bpf_prog_linfo.o
[ 67.652194]
[ 67.667901] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf_probes.o
[ 67.667906]
[ 67.682606] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/xsk.o
[ 67.682610]
[ 67.697350] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/hashmap.o
[ 67.697355]
[ 67.712629] CC /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/btf_dump.o
[ 67.712634]
[ 67.728221] LD /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf-in.o
[ 67.728225]
[ 67.743689] LINK /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf.a
[ 67.743693]
[ 67.759243] LINK /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf.so.0.0.6
[ 67.759248]
[ 67.774673] GEN /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf.pc
[ 67.774678]
[ 67.790446] make[1]: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/lib/bpf'
[ 67.790450]
[ 82.243805] gcc -g -Wall -O2 -I../../../include/uapi -I../../../lib -I../../../lib/bpf -I../../../../include/generated -I../../../include -Dbpf_prog_load=bpf_prog_test_load -Dbpf_load_program=bpf_test_load_program -I. -I/usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf -Iverifier test_verifier.c /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/test_stub.o /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf.a -lcap -lelf -lrt -lpthread -o /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/test_verifier
[ 82.243811]
[ 105.633262] gcc -g -Wall -O2 -I../../../include/uapi -I../../../lib -I../../../lib/bpf -I../../../../include/generated -I../../../include -Dbpf_prog_load=bpf_prog_test_load -Dbpf_load_program=bpf_test_load_program test_tag.c /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/test_stub.o /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/libbpf.a -lcap -lelf -lrt -lpthread -o /usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/test_tag
[ 105.633269]
[ 117.666606] progs/test_core_reloc_ints.c:34:6: error: use of unknown builtin '__builtin_preserve_access_index' [-Wimplicit-function-declaration]
[ 117.666611]
[ 117.682466] if (CORE_READ(&out->u8_field, &in->u8_field) ||
[ 117.682470]
[ 117.691483] ^
[ 117.691487]
[ 117.702036] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 117.702041]
[ 117.714239] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 117.714244]
[ 117.723313] ^
[ 117.723317]
[ 117.733896] ./bpf_helpers.h:243:24: note: expanded from macro 'bpf_core_read'
[ 117.733901]
[ 117.746256] (const void *)__builtin_preserve_access_index(src))
[ 117.746261]
[ 117.757313] ^
[ 117.757317]
[ 117.771338] progs/test_core_reloc_ints.c:34:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 117.771344]
[ 117.787642] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 117.787648]
[ 117.799907] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 117.799912]
[ 117.810141] ^
[ 117.810145]
[ 117.820566] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 117.820570]
[ 117.832673] (const void *)__builtin_preserve_access_index(src))
[ 117.832678]
[ 117.842880] ^
[ 117.842884]
[ 117.855934] progs/test_core_reloc_ints.c:35:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 117.855939]
[ 117.870335] CORE_READ(&out->s8_field, &in->s8_field) ||
[ 117.870339]
[ 117.878518] ^
[ 117.878522]
[ 117.888039] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 117.888044]
[ 117.899103] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 117.899108]
[ 117.908059] ^
[ 117.908063]
[ 117.917471] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 117.917476]
[ 117.928239] (const void *)__builtin_preserve_access_index(src))
[ 117.928243]
[ 117.939224] ^
[ 117.939227]
[ 117.951306] progs/test_core_reloc_ints.c:36:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 117.951311]
[ 117.964240] CORE_READ(&out->u16_field, &in->u16_field) ||
[ 117.964244]
[ 117.971759] ^
[ 117.971763]
[ 117.979391] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 117.979396]
[ 117.988116] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 117.988120]
[ 117.994922] ^
[ 117.994926]
[ 118.002818] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 118.002822]
[ 118.011712] (const void *)__builtin_preserve_access_index(src))
[ 118.011716]
[ 118.018233] ^
[ 118.018237]
[ 118.028781] progs/test_core_reloc_ints.c:37:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 118.028787]
[ 118.039137] CORE_READ(&out->s16_field, &in->s16_field) ||
[ 118.039142]
[ 118.044901] ^
[ 118.044905]
[ 118.056866] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 118.056870]
[ 118.065590] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 118.065594]
[ 118.072238] ^
[ 118.072242]
[ 118.081104] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 118.081108]
[ 118.090205] (const void *)__builtin_preserve_access_index(src))
[ 118.090210]
[ 118.096922] ^
[ 118.096926]
[ 118.107843] progs/test_core_reloc_ints.c:38:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 118.107849]
[ 118.118208] CORE_READ(&out->u32_field, &in->u32_field) ||
[ 118.118212]
[ 118.123995] ^
[ 118.123999]
[ 118.132805] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 118.132810]
[ 118.141650] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 118.141654]
[ 118.148373] ^
[ 118.148377]
[ 118.156332] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 118.156338]
[ 118.165100] (const void *)__builtin_preserve_access_index(src))
[ 118.165104]
[ 118.171809] ^
[ 118.171813]
[ 118.183640] progs/test_core_reloc_ints.c:39:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 118.183646]
[ 118.194170] CORE_READ(&out->s32_field, &in->s32_field) ||
[ 118.194175]
[ 118.200068] ^
[ 118.200072]
[ 118.208967] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 118.208972]
[ 118.217565] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 118.217569]
[ 118.223887] ^
[ 118.223891]
[ 118.230716] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 118.230719]
[ 118.238696] (const void *)__builtin_preserve_access_index(src))
[ 118.238709]
[ 118.244546] ^
[ 118.244549]
[ 118.254482] progs/test_core_reloc_ints.c:40:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 118.254487]
[ 118.263901] CORE_READ(&out->u64_field, &in->u64_field) ||
[ 118.263904]
[ 118.268177] ^
[ 118.268181]
[ 118.276019] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 118.276024]
[ 118.282918] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 118.282922]
[ 118.288547] ^
[ 118.288550]
[ 118.296281] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 118.296285]
[ 118.304349] (const void *)__builtin_preserve_access_index(src))
[ 118.304352]
[ 118.309122] ^
[ 118.309125]
[ 118.315724] progs/test_core_reloc_ints.c:41:6: warning: cast to 'const void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
[ 118.315728]
[ 118.326106] CORE_READ(&out->s64_field, &in->s64_field))
[ 118.326110]
[ 118.331787] ^
[ 118.331790]
[ 118.339530] progs/test_core_reloc_ints.c:26:29: note: expanded from macro 'CORE_READ'
[ 118.339535]
[ 118.347278] #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
[ 118.347281]
[ 118.353597] ^
[ 118.353600]
[ 118.360269] ./bpf_helpers.h:243:10: note: expanded from macro 'bpf_core_read'
[ 118.360274]
[ 118.368665] (const void *)__builtin_preserve_access_index(src))
[ 118.368668]
[ 118.375195] ^
[ 118.375199]
[ 118.381323] 8 warnings and 1 error generated.
[ 118.381327]
[ 118.387627] llc: <stdin>:1:1: error: expected top-level entity
[ 118.387631]
[ 118.392955] clang failed
[ 118.392959]
[ 118.397801] ^
[ 118.397804]
[ 119.542331] make: *** [/usr/src/perf_selftests-x86_64-rhel-7.6-694731e8ea7f6bbcf0c57763ed4f24faa14bf056/tools/testing/selftests/bpf/test_core_reloc_ints.o] Error 1
[ 119.542336]
To reproduce:
# build kernel
cd linux
cp config-5.3.0-13226-g694731e8ea7f6 .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Rong Chen
View attachment "config-5.3.0-13226-g694731e8ea7f6" of type "text/plain" (200584 bytes)
View attachment "job-script" of type "text/plain" (5116 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (19084 bytes)
View attachment "bpf_offload" of type "text/plain" (53507 bytes)
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