Date: Tue, 27 Aug 2019 19:05:27 +0200 From: Peter Holm <pho@freebsd.org> To: John Baldwin <jhb@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: 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... Message-ID: <20190827170527.GA7111@x8.osted.lan> In-Reply-To: <6f06637f-6486-bd2c-eebe-f14924e11e38@FreeBSD.org> References: <201908270001.x7R01vUB052426@repo.freebsd.org> <20190827143953.GA5092@x8.osted.lan> <6f06637f-6486-bd2c-eebe-f14924e11e38@FreeBSD.org>
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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
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