Thread (11 messages) 11 messages, 4 authors, 4d ago
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Revisions (2)
  1. v3 current
  2. v4 [diff vs current]

[PATCH stable 6.6.y v3 4/4] selftests/bpf: Update comments find_equal_scalars->sync_linked_regs

From: Zhenzhong Wu <hidden>
Date: 2026-06-14 16:59:13
Also in: bpf, lkml, stable
Subsystem: bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest · Maintainers: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds

From: Eduard Zingerman <eddyz87@gmail.com>

[ Upstream commit cfbf25481d6dec0089c99c9d33a2ea634fe8f008 ]

find_equal_scalars() is renamed to sync_linked_regs(),
this commit updates existing references in the selftests comments.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240718202357.1746514-5-eddyz87@gmail.com (local)
[ zhenzhong: only two pre-existing comments still needed updating in 6.6.y. ]
Signed-off-by: Zhenzhong Wu <redacted>
---
 tools/testing/selftests/bpf/progs/verifier_spill_fill.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/verifier_spill_fill.c b/tools/testing/selftests/bpf/progs/verifier_spill_fill.c
index 1f71f596d..07a2527a8 100644
--- a/tools/testing/selftests/bpf/progs/verifier_spill_fill.c
+++ b/tools/testing/selftests/bpf/progs/verifier_spill_fill.c
@@ -392,7 +392,7 @@ __naked void spill_32bit_of_64bit_fail(void)
 	*(u32*)(r10 - 8) = r1;				\
 	/* 32-bit fill r2 from stack. */		\
 	r2 = *(u32*)(r10 - 8);				\
-	/* Compare r2 with another register to trigger find_equal_scalars.\
+	/* Compare r2 with another register to trigger sync_linked_regs.\
 	 * Having one random bit is important here, otherwise the verifier cuts\
 	 * the corners. If the ID was mistakenly preserved on spill, this would\
 	 * cause the verifier to think that r1 is also equal to zero in one of\
@@ -431,7 +431,7 @@ __naked void spill_16bit_of_32bit_fail(void)
 	*(u16*)(r10 - 8) = r1;				\
 	/* 16-bit fill r2 from stack. */		\
 	r2 = *(u16*)(r10 - 8);				\
-	/* Compare r2 with another register to trigger find_equal_scalars.\
+	/* Compare r2 with another register to trigger sync_linked_regs.\
 	 * Having one random bit is important here, otherwise the verifier cuts\
 	 * the corners. If the ID was mistakenly preserved on spill, this would\
 	 * cause the verifier to think that r1 is also equal to zero in one of\
-- 
2.43.0
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