Date: Fri, 20 Aug 2021 12:30:49 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 254695] Hyper-V + TCP_BBR: Kernel Panic: Assertion in_epoch(net_epoch_preempt) failed at netinet/tcp_lro.c:1180 Message-ID: <bug-254695-7501-7jAtUoK3ln@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254695-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-254695-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254695 Gordon Bergling <gbe@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Hyper-V + TCP_BBR: Kernel |Hyper-V + TCP_BBR: Kernel |Panic: Assertion |Panic: Assertion |in_epoch(net_epoch_preempt) |in_epoch(net_epoch_preempt) |failed at |failed at |netinet/tcp_lro.c:915 |netinet/tcp_lro.c:1180 --- Comment #33 from Gordon Bergling <gbe@FreeBSD.org> --- With a -CURRENT from today the line numbers have changed, so here is the new panic output and backtrace. ---------------------------------------------------------------- panic: Assertion in_epoch(net_epoch_preempt) failed at /boiler/nfs/src/sys/netinet/tcp_lro.c:1180 cpuid =3D 0 time =3D 1629461898 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe005174d= 850 vpanic() at vpanic+0x187/frame 0xfffffe005174d8b0 panic() at panic+0x43/frame 0xfffffe005174d910 tcp_lro_flush() at tcp_lro_flush+0x171d/frame 0xfffffe005174d9a0 tcp_lro_flush_all() at tcp_lro_flush_all+0x1a3/frame 0xfffffe005174d9f0 hn_chan_callback() at hn_chan_callback+0x112c/frame 0xfffffe005174dad0 vmbus_chan_task() at vmbus_chan_task+0x2f/frame 0xfffffe005174db00 taskqueue_run_locked() at taskqueue_run_locked+0xaa/frame 0xfffffe005174db80 taskqueue_thread_loop() at taskqueue_thread_loop+0xc2/frame 0xfffffe005174d= bb0 fork_exit() at fork_exit+0x80/frame 0xfffffe005174dbf0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe005174dbf0 ---------------------------------------------------------------- backtrace: ---------------------------------------------------------------- #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 0xffffffff80c245c0 in kern_reboot (howto=3D260) at /boiler/nfs/src/sys/kern/kern_shutdown.c:486 #3 0xffffffff80c24a26 in vpanic (fmt=3D0xffffffff8120a5e4 "Assertion %s fa= iled at %s:%d", ap=3D<optimized out>) at /boiler/nfs/src/sys/kern/kern_shutdown.c:919 #4 0xffffffff80c24773 in panic (fmt=3D<unavailable>) at /boiler/nfs/src/sys/kern/kern_shutdown.c:843 #5 0xffffffff80e08c6d in tcp_lro_lookup (ifp=3D0xfffff80008f42800, pa=3D0xfffffe00573dd748) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1180 #6 tcp_lro_flush_tcphpts (lc=3D0xfffffe00572d1ad0, le=3D0xfffffe00573dd710= ) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1293 #7 tcp_lro_flush (lc=3Dlc@entry=3D0xfffffe00572d1ad0, le=3Dle@entry=3D0xfffffe00573dd710) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1373 #8 0xffffffff80e09003 in tcp_lro_rx_done (lc=3D<optimized out>) at /boiler/nfs/src/sys/netinet/tcp_lro.c:590 #9 tcp_lro_flush_all (lc=3Dlc@entry=3D0xfffffe00572d1ad0) at /boiler/nfs/src/sys/netinet/tcp_lro.c:1534 #10 0xffffffff8105bd2c in hn_chan_rollup (rxr=3D<optimized out>, txr=3D0xfffff80009026c00) at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:2886 #11 hn_chan_callback (chan=3Dchan@entry=3D0xfffff80003ab6400, xrxr=3D<optim= ized out>, xrxr@entry=3D0xfffffe00572d0000) at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:7617 #12 0xffffffff81067faf in vmbus_chan_task (xchan=3D0xfffff80003ab6400, pending=3D<optimized out>) at /boiler/nfs/src/sys/dev/hyperv/vmbus/vmbus_chan.c:1381 #13 0xffffffff80c8792a in taskqueue_run_locked (queue=3Dqueue@entry=3D0xfffff80003550100) at /boiler/nfs/src/sys/kern/subr_taskqueue.c:476 #14 0xffffffff80c889b2 in taskqueue_thread_loop (arg=3Darg@entry=3D0xfffffe0051a1f090) at /boiler/nfs/src/sys/kern/subr_taskqueue.c:793 #15 0xffffffff80bdd830 in fork_exit (callout=3D0xffffffff80c888f0 <taskqueue_thread_loop>, arg=3D0xfffffe0051a1f090, frame=3D0xfffffe005174dc00) at /boiler/nfs/src/sys/kern/kern_fork.c:1087 #16 <signal handler called> ---------------------------------------------------------------- --=20 You are receiving this mail because: You are on the CC list for the bug.=
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