kernel/linux.git/lib/test_bpf.c, branch v6.12.80

netdev_features: convert NETIF_F_LLTX to dev->lltx

2024-09-03T09:36:43+00:00

NETIF_F_LLTX can't be changed via Ethtool and is not a feature, rather an attribute, very similar to IFF_NO_QUEUE (and hot). Free one netdev_features_t bit and make it a "hot" private flag. Signed-off-by: Alexander Lobakin Signed-off-by: Paolo Abeni

Merge tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-07-22T00:56:22+00:00

Pull non-MM updates from Andrew Morton: - In the series "treewide: Refactor heap related implementation", Kuan-Wei Chiu has significantly reworked the min_heap library code and has taught bcachefs to use the new more generic implementation. - Yury Norov's series "Cleanup cpumask.h inclusion in core headers" reworks the cpumask and nodemask headers to make things generally more rational. - Kuan-Wei Chiu has sent along some maintenance work against our sorting library code in the series "lib/sort: Optimizations and cleanups". - More library maintainance work from Christophe Jaillet in the series "Remove usage of the deprecated ida_simple_xx() API". - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the series "nilfs2: eliminate the call to inode_attach_wb()". - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix GDB command error". - Plus the usual shower of singleton patches all over the place. Please see the relevant changelogs for details. * tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (98 commits) ia64: scrub ia64 from poison.h watchdog/perf: properly initialize the turbo mode timestamp and rearm counter tsacct: replace strncpy() with strscpy() lib/bch.c: use swap() to improve code test_bpf: convert comma to semicolon init/modpost: conditionally check section mismatch to __meminit* init: remove unused __MEMINIT* macros nilfs2: Constify struct kobj_type nilfs2: avoid undefined behavior in nilfs_cnt32_ge macro math: rational: add missing MODULE_DESCRIPTION() macro lib/zlib: add missing MODULE_DESCRIPTION() macro fs: ufs: add MODULE_DESCRIPTION() lib/rbtree.c: fix the example typo ocfs2: add bounds checking to ocfs2_check_dir_entry() fs: add kernel-doc comments to ocfs2_prepare_orphan_dir() coredump: simplify zap_process() selftests/fpu: add missing MODULE_DESCRIPTION() macro compiler.h: simplify data_race() macro build-id: require program headers to be right after ELF header resource: add missing MODULE_DESCRIPTION() ...

test_bpf: convert comma to semicolon

2024-07-12T23:39:52+00:00

Replace commas between expression statements with semicolons. Link: https://lkml.kernel.org/r/20240709034323.586185-1-nichen@iscas.ac.cn Signed-off-by: Chen Ni Cc: Alexei Starovoitov Cc: Andrii Nakryiko Cc: Daniel Borkmann Cc: Eduard Zingerman Cc: Hao Luo Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Martin KaFai Lau Cc: Song Liu Cc: Stanislav Fomichev Cc: Yonghong Song Signed-off-by: Andrew Morton

bpf: Fix tailcall cases in test_bpf

2024-06-26T01:12:44+00:00

Since f663a03c8e35 ("bpf, x64: Remove tail call detection"), tail_call_reachable won't be detected in x86 JIT. And, tail_call_reachable is provided by verifier. Therefore, in test_bpf, the tail_call_reachable must be provided in test cases before running. Fix and test: [ 174.828662] test_bpf: #0 Tail call leaf jited:1 170 PASS [ 174.829574] test_bpf: #1 Tail call 2 jited:1 244 PASS [ 174.830363] test_bpf: #2 Tail call 3 jited:1 296 PASS [ 174.830924] test_bpf: #3 Tail call 4 jited:1 719 PASS [ 174.831863] test_bpf: #4 Tail call load/store leaf jited:1 197 PASS [ 174.832240] test_bpf: #5 Tail call load/store jited:1 326 PASS [ 174.832240] test_bpf: #6 Tail call error path, max count reached jited:1 2214 PASS [ 174.835713] test_bpf: #7 Tail call count preserved across function calls jited:1 609751 PASS [ 175.446098] test_bpf: #8 Tail call error path, NULL target jited:1 472 PASS [ 175.447597] test_bpf: #9 Tail call error path, index out of range jited:1 206 PASS [ 175.448833] test_bpf: test_tail_calls: Summary: 10 PASSED, 0 FAILED, [10/10 JIT'ed] Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202406251415.c51865bc-oliver.sang@intel.com Fixes: f663a03c8e35 ("bpf, x64: Remove tail call detection") Signed-off-by: Leon Hwang Link: https://lore.kernel.org/r/20240625145351.40072-1-hffilwlqm@gmail.com Signed-off-by: Alexei Starovoitov

test_bpf: Add missing MODULE_DESCRIPTION()

2024-06-03T15:03:41+00:00

make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bpf.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20240531-md-lib-test_bpf-v1-1-868e4bd2f9ed@quicinc.com

bpf, tests: Fix typos in comments

2024-04-16T15:22:18+00:00

Currently, there are two comments with same name "64-bit ATOMIC magnitudes", the second one should be "32-bit ATOMIC magnitudes" based on the context. Signed-off-by: Chen Pei Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20240415081928.17440-1-cp0613@linux.alibaba.com

test_bpf: Rename second ALU64_SMOD_X to ALU64_SMOD_K

2023-12-10T05:27:54+00:00

Currently, there are two test cases with same name "ALU64_SMOD_X: -7 % 2 = -1", the first one is right, the second one should be ALU64_SMOD_K because its code is BPF_ALU64 | BPF_MOD | BPF_K. Before: test_bpf: #170 ALU64_SMOD_X: -7 % 2 = -1 jited:1 4 PASS test_bpf: #171 ALU64_SMOD_X: -7 % 2 = -1 jited:1 4 PASS After: test_bpf: #170 ALU64_SMOD_X: -7 % 2 = -1 jited:1 4 PASS test_bpf: #171 ALU64_SMOD_K: -7 % 2 = -1 jited:1 4 PASS Fixes: daabb2b098e0 ("bpf/tests: add tests for cpuv4 instructions") Signed-off-by: Tiezhu Yang Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20231207040851.19730-1-yangtiezhu@loongson.cn Signed-off-by: Alexei Starovoitov

bpf/tests: Remove duplicate JSGT tests

2023-11-30T11:17:33+00:00

It seems unnecessary that JSGT is tested twice (one before JSGE and one after JSGE) since others are tested only once. Remove the duplicate JSGT tests. Fixes: 0bbaa02b4816 ("bpf/tests: Add tests to check source register zero-extension") Signed-off-by: Yujie Liu Signed-off-by: Daniel Borkmann Acked-by: Johan Almbladh Link: https://lore.kernel.org/bpf/20231130034018.2144963-1-yujie.liu@intel.com

bpf: Remove test for MOVSX32 with offset=32

2023-11-15T20:46:27+00:00

MOVSX32 only supports sign extending 8-bit and 16-bit operands into 32 bit operands. The "ALU_MOVSX | BPF_W" test tries to sign extend a 32 bit operand into a 32 bit operand which is equivalent to a normal BPF_MOV. Remove this test as it tries to run an invalid instruction. Fixes: daabb2b098e0 ("bpf/tests: add tests for cpuv4 instructions") Signed-off-by: Puranjay Mohan Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202310111838.46ff5b6a-oliver.sang@intel.com Acked-by: Stanislav Fomichev Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20231110175150.87803-1-puranjay12@gmail.com Signed-off-by: Alexei Starovoitov

bpf/tests: add tests for cpuv4 instructions

2023-09-16T00:16:57+00:00

The BPF JITs now support cpuv4 instructions. Add tests for these new instructions to the test suite: 1. Sign extended Load 2. Sign extended Mov 3. Unconditional byte swap 4. Unconditional jump with 32-bit offset 5. Signed division and modulo Signed-off-by: Puranjay Mohan Link: https://lore.kernel.org/r/20230907230550.1417590-9-puranjay12@gmail.com Signed-off-by: Alexei Starovoitov