Re: git: 8a62a2a5659d - main - zfs: merge openzfs/zfs@f8e5af53e

Am Tage des Herren Fri, 20 Mar 2026 23:27:20 -0400
Charlie Li <vishwin@freebsd.org> schrieb:

> Shawn Webb wrote:
> > On Tue, Mar 17, 2026 at 04:52:16PM +0000, Shawn Webb wrote:  
> >> On Tue, Mar 17, 2026 at 10:44:59AM -0600, Warner Losh wrote:  
> >>> On Tue, Mar 17, 2026 at 10:36 AM Shawn Webb <shawn.webb@hardenedbsd.org>
> >>> wrote:
> >>>  
> >>>> Hey Martin,
> >>>>
> >>>> On Sat, Mar 14, 2026 at 01:26:23PM +0000, Martin Matuska wrote:  
> >>>>> The branch main has been updated by mm:
> >>>>>
> >>>>> URL:  
> >>>> https://cgit.FreeBSD.org/src/commit/?id=8a62a2a5659d1839d8799b4274c04469d7f17c78  
> >>>>>
> >>>>> commit 8a62a2a5659d1839d8799b4274c04469d7f17c78
> >>>>> Merge: f91464171d61 f8e5af53e92f
> >>>>> Author:     Martin Matuska <mm@FreeBSD.org>
> >>>>> AuthorDate: 2026-03-14 12:14:56 +0000
> >>>>> Commit:     Martin Matuska <mm@FreeBSD.org>
> >>>>> CommitDate: 2026-03-14 12:14:56 +0000
> >>>>>
> >>>>> [snip for brevity]
> >>>>>
> >>>>>      Obtained from:  OpenZFS
> >>>>>      OpenZFS commit: f8e5af53e92fa7c03393fbd4922cb9c1d0c15920  
> >>>>
> >>>> This commit seems to cause issues when building boot loader related
> >>>> code:
> >>>>
> >>>> ==== BEGIN LOG ====
> >>>> 114232 bytes available
> >>>> btxld -v -f aout -e 0x200000 -o loader_simp -l
> >>>> /usr/obj/usr/src/amd64.amd64/stand/i386/btx/btxldr/btxldr  -b
> >>>> /usr/obj/usr/src/amd64.amd64/stand/i386/btx/btx/btx loader_simp.bin
> >>>> kernel: ver=1.02 size=690 load=9000 entry=9010 map=16M pgctl=0:58
> >>>> client: fmt=elf size=5e2e8 text=57930 data=514c bss=7470 entry=0
> >>>> output: fmt=aout size=61000 text=1000 data=5f000 org=200000 entry=200000  
> >>>> ===> stand/i386/pxeldr (all)  
> >>>> -560 bytes available
> >>>> *** Error code 1
> >>>>  
> >>>
> >>> What all do you have enabled? The defaults aren't even close to running out
> >>> of space (though I've not looked at this).  
> >>
> >> Hey Warner,
> >>
> >> Thanks for reaching out! I've uploaded `make showconfig` here:
> >> https://hardenedbsd.org/~shawn/2026-03-17_srcconf-r01.txt
> >>
> >> The following options are specific to HardenedBSD (in no particular
> >> order):
> >>
> >> 1. MK_HBSD_UPDATE
> >> 2. MK_HBSDCONTROL
> >> 3. MK_PIE
> >> 4. MK_RELRO
> >> 5. MK_SHLIBRANDOM
> >> 6. MK_ZERO_REGS
> >> 7. MK_SPECTREV1_FIX
> >> 8. MK_SAFESTACK
> >> 9. MK_RETPOLINE
> >> 10. MK_LTOLIB
> >> 11. MK_CFI  
> > 
> > MK_RETPOLINE was the culprit. Something about this ZFS commit causes
> > LLVM to emit more retpoline entries than before--too many for a little
> > bootloader. That might be something to investigate later, but only to
> > satisfy a curious mind, not to actuall fix anything (since nothing's
> > actually broken.)
> > 
> > Since it doesn't really make sense to apply speculative execution
> > mitigations to a bootloader, I disabled retpoline for a components
> > in stand/.
> > 
> > Good to go.
> >   
> Also just got bit by this, albeit during the lua loader, since I have 
> WITH_RETPOLINE in my src.conf.
> 

Hello,

I do not have WITH_RETPOLINE in my /etc/src.conf, but since I got this mysterious error about
not enough bytes left, I use WITHOUT_LOADER_PXEBOOT= YES (due to issues with WITH_BEARSSL=YES
also used).
Despite not using any WITH_RETPOLINE I also catch the error ...

Kind regards,
Oliver

-- 

A FreeBSD user