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"sockmap_ktls disconnect_after_delete" test has been failing on BPF CI after recent merges from netdev: * https://github.com/kernel-patches/bpf/actions/runs/14458537639 * https://github.com/kernel-patches/bpf/actions/runs/14457178732 It happens because disconnect has been disabled for TLS [1], and it renders the test case invalid. Removing all the test code creates a conflict between bpf and bpf-next, so for now only remove the offending assert [2]. The test will be removed later on bpf-next. [1] https://lore.kernel.org/netdev/[email protected]/ [2] https://lore.kernel.org/bpf/[email protected]/ Signed-off-by: Ihor Solodrai <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Reviewed-by: Jiayuan Chen <[email protected]> Link: https://lore.kernel.org/bpf/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
The _safe variant used here gets the next element before running the callback, avoiding the endless loop condition. Signed-off-by: Brandon Kammerdiener <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Hou Tao <[email protected]>
…rating Add test that modifies the map while it's being iterated in such a way that hangs the kernel thread unless the _safe fix is applied to bpf_for_each_hash_elem. Signed-off-by: Brandon Kammerdiener <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Hou Tao <[email protected]>
Brandon Kammerdiener says: ==================== This patchset fixes an endless loop condition that can occur in bpf_for_each_hash_elem, causing the core to softlock. My understanding is that a combination of RCU list deletion and insertion introduces the new element after the iteration cursor and that there is a chance that an RCU reader may in fact use this new element in iteration. The patch uses a _safe variant of the macro which gets the next element to iterate before executing the loop body for the current element. I have also added a subtest in the for_each selftest that can trigger this condition without the fix. Changes since v2: - Renaming and additional checks in selftests/bpf/prog_tests/for_each.c Changes since v1: - Added missing Signed-off-by lines to both patches ==================== Acked-by: Hou Tao <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
Add namespace to BPF internal symbols used by light skeleton to prevent abuse and document with the code their allowed usage. Fixes: b1d18a7 ("bpf: Extend sys_bpf commands for bpf_syscall programs.") Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Kumar Kartikeya Dwivedi <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
When building the latest samples/bpf on LoongArch Fedora
make M=samples/bpf
There are compilation errors as follows:
In file included from ./linux/samples/bpf/sockex2_kern.c:2:
In file included from ./include/uapi/linux/in.h:25:
In file included from ./include/linux/socket.h:8:
In file included from ./include/linux/uio.h:9:
In file included from ./include/linux/thread_info.h:60:
In file included from ./arch/loongarch/include/asm/thread_info.h:15:
In file included from ./arch/loongarch/include/asm/processor.h:13:
In file included from ./arch/loongarch/include/asm/cpu-info.h:11:
./arch/loongarch/include/asm/loongarch.h:13:10: fatal error: 'larchintrin.h' file not found
^~~~~~~~~~~~~~~
1 error generated.
larchintrin.h is included in /usr/lib64/clang/14.0.6/include,
and the header file location is specified at compile time.
Test on LoongArch Fedora:
https://github.com/fedora-remix-loongarch/releases-info
Signed-off-by: Haoran Jiang <[email protected]>
Signed-off-by: zhangxi <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Make sure that CAN_USE_BPF_ST test (compute_live_registers/store) is enabled when __clang_major__ >= 18. Fixes: 2ea8f6a ("selftests/bpf: test cases for compute_live_registers()") Signed-off-by: Peilin Ye <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
…t/bpf/bpf Pull bpf fixes from Alexei Starovoitov: - Add namespace to BPF internal symbols (Alexei Starovoitov) - Fix possible endless loop in BPF map iteration (Brandon Kammerdiener) - Fix compilation failure for samples/bpf on LoongArch (Haoran Jiang) - Disable a part of sockmap_ktls test (Ihor Solodrai) - Correct typo in __clang_major__ macro (Peilin Ye) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Correct typo in __clang_major__ macro samples/bpf: Fix compilation failure for samples/bpf on LoongArch Fedora bpf: Add namespace to BPF internal symbols selftests/bpf: add test for softlock when modifying hashmap while iterating bpf: fix possible endless loop in BPF map iteration selftests/bpf: Mitigate sockmap_ktls disconnect_after_delete failure
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