https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256610
John Baldwin changed:
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256610
--- Comment #9 from commit-h...@freebsd.org ---
A commit in branch main references this bug:
URL:
https://cgit.FreeBSD.org/src/commit/?id=be79f30d6c3e353856d4f82227b270abc26be702
commit be79f30d6c3e353856d4f82227b270abc26be702
Author:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256610
--- Comment #8 from Niels Bakker ---
(In reply to Mark Johnston from comment #7)
No crash with this patch applied while doing the same thing that used to
trigger a panic.
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--- Comment #7 from Mark Johnston ---
Niels, are you able to test the patch from comment 4? (With
kern.ipc.mb_use_ext_pgs set back to 1 of course.)
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--- Comment #6 from John Baldwin ---
Ok, I think I'm happy with m_dup always generating a mapped chain then.
Presumably even if you did unmapped you'd still need to be allocating pages,
etc. m_dup() already handles jumbo frames suboptimal
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256610
--- Comment #5 from Mark Johnston ---
(In reply to John Baldwin from comment #4)
The full stack looks like this:
#8
#9 memmove_erms () at /usr/src/sys/amd64/amd64/support.S:547
#10 0x80c80f18 in m_dup (m=0xf8021e841200,
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256610
--- Comment #4 from John Baldwin ---
I'm curious how this is using unmapped mbufs? Does ngtee use sendfile(2) under
the hood? While we could patch m_dup(), I don't know we want to enforce the
policy that the dup is always unmapped? That
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256610
Mark Johnston changed:
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CC||galla...@freebsd.org,
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Mark Linimon changed:
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Assignee|b...@freebsd.org|n...@freebsd.org
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