5.10-stable patches

added patches:
	bpf-fix-selftest-compilation-on-clang-11.patch

diff --git a/queue-5.10/bpf-fix-selftest-compilation-on-clang-11.patch b/queue-5.10/bpf-fix-selftest-compilation-on-clang-11.patch
new file mode 100644 (file)
index 0000000..0bb6645
--- /dev/null
+++ b/queue-5.10/bpf-fix-selftest-compilation-on-clang-11.patch
@@ -0,0 +1,53 @@
+From fb3558127cb62ba2dea9e3d0efa1bb1d7e5eee2a Mon Sep 17 00:00:00 2001
+From: Andrei Matei <andreimatei1@gmail.com>
+Date: Tue, 24 Nov 2020 22:52:55 -0500
+Subject: bpf: Fix selftest compilation on clang 11
+
+From: Andrei Matei <andreimatei1@gmail.com>
+
+commit fb3558127cb62ba2dea9e3d0efa1bb1d7e5eee2a upstream.
+
+Before this patch, profiler.inc.h wouldn't compile with clang-11 (before
+the __builtin_preserve_enum_value LLVM builtin was introduced in
+https://reviews.llvm.org/D83242).
+
+Another test that uses this builtin (test_core_enumval) is conditionally
+skipped if the compiler is too old. In that spirit, this patch inhibits
+part of populate_cgroup_info(), which needs this CO-RE builtin. The
+selftests build again on clang-11.
+
+The affected test (the profiler test) doesn't pass on clang-11 because
+it's missing https://reviews.llvm.org/D85570, but at least the test suite
+as a whole compiles. The test's expected failure is already called out in
+the README.
+
+Signed-off-by: Andrei Matei <andreimatei1@gmail.com>
+Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
+Tested-by: Florian Lehner <dev@der-flo.net>
+Acked-by: Yonghong Song <yhs@fb.com>
+Link: https://lore.kernel.org/bpf/20201125035255.17970-1-andreimatei1@gmail.com
+Cc: Lorenz Bauer <lmb@cloudflare.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ tools/testing/selftests/bpf/progs/profiler.inc.h |    2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/tools/testing/selftests/bpf/progs/profiler.inc.h
++++ b/tools/testing/selftests/bpf/progs/profiler.inc.h
+@@ -256,6 +256,7 @@ static INLINE void* populate_cgroup_info
+               BPF_CORE_READ(task, nsproxy, cgroup_ns, root_cset, dfl_cgrp, kn);
+       struct kernfs_node* proc_kernfs = BPF_CORE_READ(task, cgroups, dfl_cgrp, kn);
+ 
++#if __has_builtin(__builtin_preserve_enum_value)
+       if (ENABLE_CGROUP_V1_RESOLVER && CONFIG_CGROUP_PIDS) {
+               int cgrp_id = bpf_core_enum_value(enum cgroup_subsys_id___local,
+                                                 pids_cgrp_id___local);
+@@ -275,6 +276,7 @@ static INLINE void* populate_cgroup_info
+                       }
+               }
+       }
++#endif
+ 
+       cgroup_data->cgroup_root_inode = get_inode_from_kernfs(root_kernfs);
+       cgroup_data->cgroup_proc_inode = get_inode_from_kernfs(proc_kernfs);

diff --git a/queue-5.10/series b/queue-5.10/series
index 3a029d03eeeb21f2acb52e1c10c42ea1482d70c7..b476838597ed7a14e145aae3230624cb56968d29 100644 (file)
--- a/queue-5.10/series
+++ b/queue-5.10/series
@@ -1 +1,2 @@
 revert-kconfig-remove-kvmconfig-and-xenconfig-shorthands.patch
+bpf-fix-selftest-compilation-on-clang-11.patch