On Tue, Aug 27, 2019 at 11:05 AM Peter Holm <p...@freebsd.org> wrote:
> 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 > This panic is easily reproducible by the fusefs test suite. $ cd /usr/tests/sys/fs/fusefs/ $ ./read --gtest_filter=Read.sendfile panic: non-ext_pgs mbuf with TLS session cpuid = 3 time = 1566926504 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0050bdc560 vpanic() at vpanic+0x19d/frame 0xfffffe0050bdc5b0 panic() at panic+0x43/frame 0xfffffe0050bdc610 sendfile_iodone() at sendfile_iodone+0x28e/frame 0xfffffe0050bdc660 vn_sendfile() at vn_sendfile+0x1598/frame 0xfffffe0050bdc8f0 sendfile() at sendfile+0x127/frame 0xfffffe0050bdc980 amd64_syscall() at amd64_syscall+0x2b9/frame 0xfffffe0050bdcab0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0050bdcab0 --- syscall (393, FreeBSD ELF64, sys_sendfile), rip = 0x80052d9ea, rsp = 0x7fffffffe5a8, rbp = 0x7fffffffe790 --- -Alan _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
