Date: Wed, 14 Jul 2021 13:19:16 +0000 From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 254695] Hyper-V + TCP_BBR: Kernel Panic: Assertion in_epoch(net_epoch_preempt) failed at netinet/tcp_lro.c:915 Message-ID: <bug-254695-27103-bnJsdmG4G5@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254695-27103@https.bugs.freebsd.org/bugzilla/> References: <bug-254695-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254695 --- Comment #23 from Gordon Bergling <gbe@FreeBSD.org> --- (In reply to Michael Tuexen from comment #19) I just applied your patch and have a build running. The backtrace from a kernel build from today: __curthread () at /boiler/nfs/src/sys/amd64/include/pcpu_aux.h:55 55 __asm("movq %%gs:%P1,%0" : "=3Dr" (td) : "n" (offsetof(stru= ct pcpu, (kgdb) bt #0 __curthread () at /boiler/nfs/src/sys/amd64/include/pcpu_aux.h:55 #1 doadump (textdump=3Dtextdump@entry=3D1) at /boiler/nfs/src/sys/kern/kern_shutdown.c:399 #2 0xffffffff80c20da0 in kern_reboot (howto=3D260) at /boiler/nfs/src/sys/kern/kern_shutdown.c:486 #3 0xffffffff80c21206 in vpanic (fmt=3D0xffffffff81202daa "Assertion %s fa= iled at %s:%d", ap=3D<optimized out>) at /boiler/nfs/src/sys/kern/kern_shutdown.c:919 #4 0xffffffff80c20f53 in panic (fmt=3D<unavailable>) at /boiler/nfs/src/sys/kern/kern_shutdown.c:843 #5 0xffffffff80e01f6d in tcp_lro_lookup (ifp=3D0xfffff80003784000, pa=3D0xfffffe00573d9748) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1155 #6 tcp_lro_flush_tcphpts (lc=3D0xfffffe00572cdad0, le=3D0xfffffe00573d9710= ) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1268 #7 tcp_lro_flush (lc=3Dlc@entry=3D0xfffffe00572cdad0, le=3Dle@entry=3D0xfffffe00573d9710) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1348 #8 0xffffffff80e02303 in tcp_lro_rx_done (lc=3D<optimized out>) at /boiler/nfs/src/sys/netinet/tcp_lro.c:565 #9 tcp_lro_flush_all (lc=3Dlc@entry=3D0xfffffe00572cdad0) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1509 #10 0xffffffff8105487c in hn_chan_rollup (rxr=3D<optimized out>, txr=3D0xfffff80003b2e400) at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:2886 #11 hn_chan_callback (chan=3Dchan@entry=3D0xfffff80003ac7c00, xrxr=3D<optim= ized out>, xrxr@entry=3D0xfffffe00572cc000) at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:7617 #12 0xffffffff81060aff in vmbus_chan_task (xchan=3D0xfffff80003ac7c00, pending=3D<optimized out>) at /boiler/nfs/src/sys/dev/hyperv/vmbus/vmbus_chan.c:1381 #13 0xffffffff80c82e8a in taskqueue_run_locked (queue=3Dqueue@entry=3D0xfffff800035dc400) at /boiler/nfs/src/sys/kern/subr_taskqueue.c:476 #14 0xffffffff80c83f12 in taskqueue_thread_loop (arg=3Darg@entry=3D0xfffffe0051a1b090) at /boiler/nfs/src/sys/kern/subr_taskqueue.c:793 #15 0xffffffff80bda300 in fork_exit (callout=3D0xffffffff80c83e50 <taskqueue_thread_loop>, arg=3D0xfffffe0051a1b090, frame=3D0xfffffe0051757c00) at /boiler/nfs/src/sys/kern/kern_fork.c:1083 --=20 You are receiving this mail because: You are the assignee for the bug.=
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