Re: git: c0d9a07101a1 - main - MFV: zstd 1.5.7.

On 2026-04-10 21:00, Adrian Chadd wrote:
> hi!
> 
> Same; this is breaking on my Snapdragon X1E FDT BSP work.
> 
> It fails super early in kernel hand-off. It's going to be a pain to
> figure out locally as I have a framebuffer and I'd have to go do all
> the early mapping to do super early (in initarm()) framebuffer work.
> 
> Is this reproducible by anyone else? delphij@, do you have any arm64
> FDT devices? Or maybe QEMU?

bz@ and lwhsu@ did some diagnostic work, and this should help (adding 
-DZSTD_NO_TRACE to ZSTD_C)

diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk
index 871cd1c0705a..043d3fd0927c 100644
--- a/sys/conf/kern.pre.mk
+++ b/sys/conf/kern.pre.mk
@@ -158,7 +158,7 @@ NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} 
${WERROR} -o ${.TARGET} \
  NOSAN_C= ${NORMAL_C:N-fsanitize*:N-fno-sanitize*:N-fasan-shadow-offset*}

  # for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
-ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd 
${CFLAGS} \
+ZSTD_C= ${CC} -c -DZSTD_NO_TRACE -DZSTD_HEAPMODE=1 
-I$S/contrib/zstd/lib/freebsd ${CFLAGS} \
         -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \
         -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC}
  # https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1]



> -adrian
> 
> 
> On Thu, 9 Apr 2026 at 19:31, Bjoern A. Zeeb <bz@freebsd.org> wrote:
>>
>> On Wed, 8 Apr 2026, Xin LI wrote:
>>
>>> The branch main has been updated by delphij:
>>>
>>> URL: https://cgit.FreeBSD.org/src/commit/?id=c0d9a07101a1e72769ee0619a583f63a078fb391
>>>
>>> commit c0d9a07101a1e72769ee0619a583f63a078fb391
>>> Merge: dd201e407e48 7e509d50854e
>>> Author:     Xin LI <delphij@FreeBSD.org>
>>> AuthorDate: 2026-04-08 21:22:45 +0000
>>> Commit:     Xin LI <delphij@FreeBSD.org>
>>> CommitDate: 2026-04-08 21:22:45 +0000
>>>
>>>     MFV: zstd 1.5.7.
>>>
>>>     MFC after:      2 weeks
>>>     Relnotes:       yes
>>
>> I do not know how but this makes an arm64 machine,
>> doing a UEFI netboot (in case it matters) fetching the /boot/loader.efi,
>> to fail.
>> Kernel is the GENERIC-MMCCAM and I do not do ZFS, just to be sure.
>>
>> See this thread for a "bisect" and symptoms:
>> https://lists.freebsd.org/archives/freebsd-arm/2026-April/005757.html
>>
>> /bz
>>
>> --
>> Bjoern A. Zeeb                                                     r15:7
>>