svn commit: r351522 - in head: sbin/ifconfig share/man/man4 sys/conf sys/kern sys/modules sys/modules/ktls_ocf sys/net sys/netinet sys/netinet/tcp_stacks sys/netinet6 sys/opencrypto sys/sys tools/t...

[Peter Holm]

On Tue, Aug 27, 2019 at 09:02:31AM -0700, John Baldwin wrote:
> On 8/27/19 7:39 AM, Peter Holm wrote:
> > On Tue, Aug 27, 2019 at 12:01:57AM +0000, John Baldwin wrote:
> >> Author: jhb
> >> Date: Tue Aug 27 00:01:56 2019
> >> New Revision: 351522
> >> URL: https://svnweb.freebsd.org/changeset/base/351522
> >>
> >> Log:
> >>   Add kernel-side support for in-kernel TLS.
> >>   
> > 
> > Could this be yours?
> > 
> > 20190827 15:55:34 all (496/668): sendfile12.sh
> > Aug 27 15:56:16 mercat1 kernel: pid 50036 (swap), jid 0, uid 0, was killed: out of swap space
> > panic: non-ext_pgs mbuf with TLS session
> 
> Possibly, though if sfio was freed and marked with 0xdeadc0de junk, then it
> would trip over this assertion for any use-after-free.  I see in gdb that you
> couldn't see sfio because of clang's poor debug info.  It would be really good
> to try to find the contents of sfio to debug this further.
> 
> You should be able to find it via 'bp->b_caller1' in frame 14:
> 
> 'p *(struct sf_io *)bp->b_caller1'
> 

Here's a repeat where the involved files are compiled with "-O0":
https://people.freebsd.org/~pho/stress/log/jhb009.txt

Let me know if you need the kernel + core.

- Peter