Date: Sat, 18 Jan 2020 01:47:19 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 243420] page fault in if_io_tqg_0 on virtualized guest Message-ID: <bug-243420-227@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243420 Bug ID: 243420 Summary: page fault in if_io_tqg_0 on virtualized guest Product: Base System Version: 12.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: mqudsi@neosmart.net Greetings. I have FreeBSD 12.1-RELEASE-p1 GENERIC (unmodified) amd64 running under ESXi 6.7, and have had no problems whatsoever for a number of years. While using ctld to serve a zvol as an iscsi target, I ran into a kernel pa= nic (which I'll try to reproduce), summarized below: ------------------------------------------------------------------ Fatal trap 12: page fault while in kernel mode cpuid =3D 0; apic id =3D 00 fault virtual address =3D 0x0 fault code =3D supervisor write data, page not present instruction pointer =3D 0x20:0xffffffff80cef252 stack pointer =3D 0x28:0xfffffe0075da18c0 frame pointer =3D 0x28:0xfffffe0075da19a0 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 0 (if_io_tqg_0) trap number =3D 12 panic: page fault cpuid =3D 0 time =3D 1579311312 KDB: stack backtrace: #0 0xffffffff80c1d297 at kdb_backtrace+0x67 #1 0xffffffff80bd05cd at vpanic+0x19d #2 0xffffffff80bd0423 at panic+0x43 #3 0xffffffff810a7dcc at trap_fatal+0x39c #4 0xffffffff810a7e19 at trap_pfault+0x49 #5 0xffffffff810a740f at trap+0x29f #6 0xffffffff81081a0c at calltrap+0x8 #7 0xffffffff80ce9be5 at _task_fn_rx+0x75 #8 0xffffffff80c1bb54 at gtaskqueue_run_locked+0x144 #9 0xffffffff80c1b7b8 at gtaskqueue_thread_loop+0x98 #10 0xffffffff80b90c23 at fork_exit+0x83 #11 0xffffffff81082a4e at fork_trampoline+0xe ------------------------------------------------------------------ I recently upgraded the host machine and in the process switched from vmxne= t3 virtualized network adapters to SR-IOV from the (same) Intel T520-CR. I had= no problems in the past with an exclusively vmxnet3 configuration, but before I rush to blame it on if_ixv I must note that iSCSI is being served over the usual and boring vmxnet3 interface. --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-243420-227>