[Bug 254695] Hyper-V: Kernel Panic: Assertion in_epoch(net_epoch_preempt) failed at netinet/tcp_lro.c:915

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254695

--- Comment #5 from Gordon Bergling <gbe at FreeBSD.org> ---
Backtrace

#0  __curthread () at /boiler/nfs/src/sys/amd64/include/pcpu_aux.h:55
#1  doadump (textdump=textdump at entry=1) at
/boiler/nfs/src/sys/kern/kern_shutdown.c:399
#2  0xffffffff80c132f0 in kern_reboot (howto=260) at
/boiler/nfs/src/sys/kern/kern_shutdown.c:486
#3  0xffffffff80c13750 in vpanic (fmt=<optimized out>, ap=<optimized out>) at
/boiler/nfs/src/sys/kern/kern_shutdown.c:919
#4  0xffffffff80c134a3 in panic (fmt=<unavailable>) at
/boiler/nfs/src/sys/kern/kern_shutdown.c:843
#5  0xffffffff80ded83f in tcp_lro_lookup (lc=0xfffffe0057299ad0,
le=0xfffffe00573a3b48)
    at /boiler/nfs/src/sys/netinet/tcp_lro.c:915
#6  0xffffffff80dee79a in tcp_lro_rx2 (lc=<optimized out>,
lc at entry=0xfffffe0057299ad0, m=<optimized out>,
    m at entry=0xfffff80003956d00, csum=<optimized out>, csum at entry=0,
use_hash=<optimized out>, use_hash at entry=1)
    at /boiler/nfs/src/sys/netinet/tcp_lro.c:1946
#7  0xffffffff80def51f in tcp_lro_rx (lc=<unavailable>,
lc at entry=0xfffffe0057299ad0, m=<unavailable>,
    m at entry=0xfffff80003956d00, csum=<unavailable>, csum at entry=0) at
/boiler/nfs/src/sys/netinet/tcp_lro.c:2060
#8  0xffffffff8103822b in hn_lro_rx (lc=0xfffffe0057299ad0,
m=0xfffff80003956d00)
    at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:3421
#9  hn_rxpkt (rxr=0xfffffe0057298000) at
/boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:3722
#10 hn_rndis_rx_data (rxr=<optimized out>, data=<optimized out>,
dlen=<optimized out>)
    at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:7392
#11 hn_rndis_rxpkt (rxr=<optimized out>, data=<optimized out>, dlen=<optimized
out>)
    at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:7413
#12 hn_nvs_handle_rxbuf (rxr=<optimized out>, chan=0xfffff800039f7400,
pkthdr=<optimized out>)
    at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:7512
#13 hn_chan_callback (chan=chan at entry=0xfffff800039f7400, xrxr=<optimized out>,
xrxr at entry=0xfffffe0057298000)
    at /boiler/nfs/src/sys/dev/hyperv/netvsc/if_hn.c:7604
#14 0xffffffff810454df in vmbus_chan_task (xchan=0xfffff800039f7400,
pending=<optimized out>)
    at /boiler/nfs/src/sys/dev/hyperv/vmbus/vmbus_chan.c:1381
#15 0xffffffff80c752fa in taskqueue_run_locked
(queue=queue at entry=0xfffff800038b9300)
    at /boiler/nfs/src/sys/kern/subr_taskqueue.c:476
#16 0xffffffff80c76384 in taskqueue_thread_loop
(arg=arg at entry=0xfffffe000428f090)
    at /boiler/nfs/src/sys/kern/subr_taskqueue.c:793
#17 0xffffffff80bcd540 in fork_exit (callout=0xffffffff80c762f0
<taskqueue_thread_loop>, arg=0xfffffe000428f090,
    frame=0xfffffe0051761c00) at /boiler/nfs/src/sys/kern/kern_fork.c:1077
#18 <signal handler called>

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