On 12 Sep 2022, at 14:36, Gert Doering wrote: > On Mon, Sep 12, 2022 at 02:27:57PM +0200, Gert Doering wrote: >> trying to load my newly-instrumented if_ovpn.ko, I kldunload'ed the >> existing one - without shutting down *all* OpenVPN instances first. >> >> *Boom*... >> >> Console attached. > > Ah, nice, dmesg has all the info in text format, no need to send PNGs > to the list :-) > > > -------------------- snip ---------------- > ovpn3: changing name to 'tun11' > tun8: link state changed to DOWN > ovpn4: changing name to 'tun4' > tun4: link state changed to UP > tun4: promiscuous mode enabled > > Warning: memory type ovpn leaked memory on destroy (1 allocations, 2048 bytes > leaked). > > > Fatal trap 12: page fault while in kernel mode > cpuid = 3; apic id = 06 > fault virtual address = 0xffffffff82f81d70 > fault code = supervisor read instruction, page not present > instruction pointer = 0x20:0xffffffff82f81d70 > stack pointer = 0x28:0xfffffe000859edf8 > frame pointer = 0x28:0xfffffe000859ee40 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 0 (softirq_3) > trap number = 12 > panic: page fault > cpuid = 3 > time = 1662985342 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe000859ebb0 > vpanic() at vpanic+0x151/frame 0xfffffe000859ec00 > panic() at panic+0x43/frame 0xfffffe000859ec60 > trap_fatal() at trap_fatal+0x387/frame 0xfffffe000859ecc0 > trap_pfault() at trap_pfault+0xab/frame 0xfffffe000859ed20 > calltrap() at calltrap+0x8/frame 0xfffffe000859ed20 > --- trap 0xc, rip = 0xffffffff82f81d70, rsp = 0xfffffe000859edf8, rbp = > 0xfffffe000859ee40 --- > __stop_set_sysinit_set() at __stop_set_sysinit_set+0x5350/frame > 0xfffffe000859ee40 > gtaskqueue_run_locked() at gtaskqueue_run_locked+0xa7/frame 0xfffffe000859eec0 > gtaskqueue_thread_loop() at gtaskqueue_thread_loop+0xc2/frame > 0xfffffe000859eef0 > fork_exit() at fork_exit+0x80/frame 0xfffffe000859ef30 > fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe000859ef30 > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- > KDB: enter: panic > ---<<BOOT>>--- > I can reproduce the memory leak, but not the panic. I’m also entirely unclear how if_ovpn would trigger anything in gtaskqueue*. It doesn’t use any task queues, only callouts (for pings and idle timeout).
Can you reproduce the panic? Kristof _______________________________________________ Openvpn-devel mailing list Openvpn-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openvpn-devel
