[Bug 263617] panic: in6_cksum: out of data: in6_cksum_partial() from ipf(check4sum()

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 27 Apr 2022 23:25:47 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263617

            Bug ID: 263617
           Summary: panic: in6_cksum: out of data: in6_cksum_partial()
                    from ipf(check4sum()
           Product: Base System
           Version: 12.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: heas@shrubbery.net

12.2-RELEASE-p15

I have had a few panics in the last few months, but I now have a large enough
dumpdev.  Thus, I do not know if those were the same traceback & the host has
been kept up-to-date with 12-RELEASE over this period.  I do not expect a high
volume of v6 traffic to reach this host.

This is a non-debug kernel.  I'm happy to switch to one or collect other
information.  

panic: in6_cksum: out of data
cpuid = 4
time = 1650753800
KDB: stack backtrace:
#0 0xffffffff80c0ae85 at kdb_backtrace+0x65
#1 0xffffffff80bbf13b at vpanic+0x17b
#2 0xffffffff80bbefb3 at panic+0x43
#3 0xffffffff80dff954 at in6_cksum_partial+0x5e4
#4 0xffffffff85b60c2b at fr_cksum+0x9b
#5 0xffffffff85b66cbf at ipf_checkl4sum+0xaf
#6 0xffffffff85b5c5d7 at ipf_checkv6sum+0x77
#7 0xffffffff85b5d779 at ipf_makefrip+0xa79
#8 0xffffffff85b5f833 at ipf_check+0x163
#9 0xffffffff85b5c984 at ipf_check_wrapper6+0x54
#10 0xffffffff80ce0900 at pfil_run_hooks+0xb0
#11 0xffffffff80e0f59a at ip6_input+0x69a
#12 0xffffffff80cdfada at netisr_dispatch_src+0xca
#13 0xffffffff80cc2cb8 at ether_demux+0x138
#14 0xffffffff80cc3f6b at ether_nh_input+0x33b
#15 0xffffffff80cdfada at netisr_dispatch_src+0xca
#16 0xffffffff80cc30db at ether_input+0x4b
#17 0xffffffff80cdc15c at iflib_rxeof+0x9ac
Uptime: 11d9h24m0s

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