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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org,
	sergio.collado@gmail.com
Cc: Sasha Levin <sashal@kernel.org>
Subject: Re: [PATCH 6.1.y 1/2] Kunit to check the longest symbol length
Date: Sun, 22 Jun 2025 22:33:30 -0400
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[ Sasha's backport helper bot ]

Hi,

Summary of potential issues:
⚠️ Found follow-up fixes in mainline

The upstream commit SHA1 provided is correct: c104c16073b7fdb3e4eae18f66f4009f6b073d6f

Status in newer kernel trees:
6.15.y | Present (exact SHA1)
6.12.y | Present (different SHA1: 6ad4997209cb)
6.6.y | Not found

Found fixes commits:
f710202b2a45 x86/tools: Drop duplicate unlikely() definition in insn_decoder_test.c

Note: The patch differs from the upstream commit:
---
1:  c104c16073b7f ! 1:  8591a0ffe2b52 Kunit to check the longest symbol length
    @@ Metadata
      ## Commit message ##
         Kunit to check the longest symbol length
     
    +    commit c104c16073b7fdb3e4eae18f66f4009f6b073d6f upstream.
    +
         The longest length of a symbol (KSYM_NAME_LEN) was increased to 512
         in the reference [1]. This patch adds kunit test suite to check the longest
         symbol length. These tests verify that the longest symbol length defined
    @@ lib/Kconfig.debug: config FORTIFY_KUNIT_TEST
      	depends on HAVE_HW_BREAKPOINT
     
      ## lib/Makefile ##
    -@@ lib/Makefile: obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o
    - obj-$(CONFIG_CRC_KUNIT_TEST) += crc_kunit.o
    - obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o
    - obj-$(CONFIG_USERCOPY_KUNIT_TEST) += usercopy_kunit.o
    +@@ lib/Makefile: obj-$(CONFIG_OVERFLOW_KUNIT_TEST) += overflow_kunit.o
    + CFLAGS_stackinit_kunit.o += $(call cc-disable-warning, switch-unreachable)
    + obj-$(CONFIG_STACKINIT_KUNIT_TEST) += stackinit_kunit.o
    + obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o
     +obj-$(CONFIG_LONGEST_SYM_KUNIT_TEST) += longest_symbol_kunit.o
     +CFLAGS_longest_symbol_kunit.o += $(call cc-disable-warning, missing-prototypes)
      
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.1.y        |  Success    |  Success   |