Attachment 200710 Details for Bug 234567 – complete debug session for 2nd crash

complete debug session for 2nd crash

debug2.txt (text/plain), 18.05 KB, created by Martin Birgmeier on 2019-01-02 13:11:58 UTC

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Creator: Martin Birgmeier

Created: 2019-01-02 13:11:58 UTC

Size: 18.05 KB

patch

obsolete

>[0]# /usr/libexec/kgdb /boot/kernel/kernel /var/crash/vmcore.2
>GNU gdb 6.1.1 [FreeBSD]
>Copyright 2004 Free Software Foundation, Inc.
>GDB is free software, covered by the GNU General Public License, and you are
>welcome to change it and/or distribute copies of it under certain conditions.
>Type "show copying" to see the conditions.
>There is absolutely no warranty for GDB.  Type "show warranty" for details.
>This GDB was configured as "amd64-marcel-freebsd"...
>
>Unread portion of the kernel message buffer:
><110>ipfw: 18180 Count TCP [2002:bc16:65a7:4d42::5]:41410 [2a01:618:404::1]:53 out via stf0
><110>ipfw: 18180 Count TCP [2002:bc16:65a7:4d42::5]:41411 [2a01:618:404::1]:53 out via stf0
><110>ipfw: 12000 Deny TCP 192.168.1.173:52766 17.252.28.30:5223 out via ng0
><110>ipfw: 12000 Deny TCP 192.168.1.173:52763 17.252.28.90:5223 out via ng0
>
>
>Fatal trap 12: page fault while in kernel mode
>cpuid = 0; apic id = 00
>fault virtual address   = 0x0
>fault code              = supervisor read data, page not present
>instruction pointer     = 0x20:0xffffffff8045230b
>stack pointer           = 0x28:0xfffffe001e7116d0
>frame pointer           = 0x28:0xfffffe001e711990
>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         = 1446 (isc-socket)
>trap number             = 12
>WARNING !drm_modeset_is_locked(&crtc->mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:577
>WARNING !drm_modeset_is_locked(&crtc->mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:577
>WARNING !drm_modeset_is_locked(&dev->mode_config.connection_mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:622
>WARNING !drm_modeset_is_locked(&plane->mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:821
>WARNING !drm_modeset_is_locked(&plane->mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:821
>WARNING !drm_modeset_is_locked(&plane->mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:821
>WARNING !drm_modeset_is_locked(&plane->mutex) failed at /usr/tmp/a/SRC/FreeBSD-ports/head/graphics/drm-fbsd12.0-kmod/work/kms-drm-71fcc9f/drivers/gpu/drm/drm_atomic_helper.c:821
><4>WARN_ON(!mutex_is_locked(&dev->struct_mutex))
>              
><4>WARN_ON(!mutex_is_locked(&fbc->lock))
>  
><4>WARN_ON(!mutex_is_locked(&fbc->lock))WARN_ON(!mutex_is_locked(&fbc->lock))
>panic: page fault
>cpuid = 0
>time = 1546433401
>KDB: stack backtrace:
>db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe001e711380
>vpanic() at vpanic+0x1a3/frame 0xfffffe001e7113e0
>panic() at panic+0x43/frame 0xfffffe001e711440
>trap_fatal() at trap_fatal+0x35f/frame 0xfffffe001e711490
>trap_pfault() at trap_pfault+0x49/frame 0xfffffe001e7114f0
>trap() at trap+0x29e/frame 0xfffffe001e711600
>calltrap() at calltrap+0x8/frame 0xfffffe001e711600
>--- trap 0xc, rip = 0xffffffff8045230b, rsp = 0xfffffe001e7116d0, rbp = 0xfffffe001e711990 ---
>kqueue_kevent() at kqueue_kevent+0xc1b/frame 0xfffffe001e711990
>kern_kevent() at kern_kevent+0xb5/frame 0xfffffe001e711a00
>kern_kevent_generic() at kern_kevent_generic+0x71/frame 0xfffffe001e711a60
>sys_kevent() at sys_kevent+0x61/frame 0xfffffe001e711ac0
>amd64_syscall() at amd64_syscall+0x34b/frame 0xfffffe001e711bf0
>fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001e711bf0
>--- syscall (560, FreeBSD ELF64, sys_kevent), rip = 0x800c1c1ea, rsp = 0x7fffdf9fae68, rbp = 0x7fffdf9faeb0 ---
>Uptime: 18m49s
>Dumping 622 out of 2016 MB:..3%..11%..21%..31%..42%..52%..62%..72%..83%..93%
>
>Reading symbols from /boot/kernel/if_tun.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_tun.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/if_tun.ko
>Reading symbols from /boot/kernel/ataintel.ko...Reading symbols from /usr/lib/debug//boot/kernel/ataintel.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ataintel.ko
>Reading symbols from /boot/kernel/atapci.ko...Reading symbols from /usr/lib/debug//boot/kernel/atapci.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/atapci.ko
>Reading symbols from /boot/kernel/ata.ko...Reading symbols from /usr/lib/debug//boot/kernel/ata.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ata.ko
>Reading symbols from /boot/kernel/geom_eli.ko...Reading symbols from /usr/lib/debug//boot/kernel/geom_eli.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/geom_eli.ko
>Reading symbols from /boot/kernel/uhid.ko...Reading symbols from /usr/lib/debug//boot/kernel/uhid.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/uhid.ko
>Reading symbols from /boot/kernel/usb.ko...Reading symbols from /usr/lib/debug//boot/kernel/usb.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/usb.ko
>Reading symbols from /boot/kernel/snd_hda.ko...Reading symbols from /usr/lib/debug//boot/kernel/snd_hda.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/snd_hda.ko
>Reading symbols from /boot/kernel/sound.ko...Reading symbols from /usr/lib/debug//boot/kernel/sound.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/sound.ko
>Reading symbols from /boot/kernel/mmcsd.ko...Reading symbols from /usr/lib/debug//boot/kernel/mmcsd.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/mmcsd.ko
>Reading symbols from /boot/kernel/mmc.ko...Reading symbols from /usr/lib/debug//boot/kernel/mmc.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/mmc.ko
>Reading symbols from /boot/kernel/geom_flashmap.ko...Reading symbols from /usr/lib/debug//boot/kernel/geom_flashmap.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/geom_flashmap.ko
>Reading symbols from /boot/kernel/coretemp.ko...Reading symbols from /usr/lib/debug//boot/kernel/coretemp.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/coretemp.ko
>Reading symbols from /boot/kernel/firewire.ko...Reading symbols from /usr/lib/debug//boot/kernel/firewire.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/firewire.ko
>Reading symbols from /boot/kernel/ehci.ko...Reading symbols from /usr/lib/debug//boot/kernel/ehci.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ehci.ko
>Reading symbols from /boot/kernel/accf_data.ko...Reading symbols from /usr/lib/debug//boot/kernel/accf_data.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/accf_data.ko
>Reading symbols from /boot/kernel/if_rl.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_rl.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/if_rl.ko
>Reading symbols from /boot/kernel/miibus.ko...Reading symbols from /usr/lib/debug//boot/kernel/miibus.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/miibus.ko
>Reading symbols from /boot/kernel/accf_http.ko...Reading symbols from /usr/lib/debug//boot/kernel/accf_http.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/accf_http.ko
>Reading symbols from /boot/kernel/ahci.ko...Reading symbols from /usr/lib/debug//boot/kernel/ahci.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ahci.ko
>Reading symbols from /boot/kernel/if_wpi.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_wpi.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/if_wpi.ko
>Reading symbols from /boot/kernel/firmware.ko...Reading symbols from /usr/lib/debug//boot/kernel/firmware.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/firmware.ko
>Reading symbols from /boot/kernel/wlan.ko...Reading symbols from /usr/lib/debug//boot/kernel/wlan.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/wlan.ko
>Reading symbols from /boot/kernel/dummynet.ko...Reading symbols from /usr/lib/debug//boot/kernel/dummynet.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/dummynet.ko
>Reading symbols from /boot/kernel/ipfw.ko...Reading symbols from /usr/lib/debug//boot/kernel/ipfw.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ipfw.ko
>Reading symbols from /boot/kernel/if_stf.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_stf.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/if_stf.ko
>Reading symbols from /boot/kernel/umass.ko...Reading symbols from /usr/lib/debug//boot/kernel/umass.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/umass.ko
>Reading symbols from /boot/kernel/wlan_xauth.ko...Reading symbols from /usr/lib/debug//boot/kernel/wlan_xauth.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/wlan_xauth.ko
>Reading symbols from /boot/kernel/ulpt.ko...Reading symbols from /usr/lib/debug//boot/kernel/ulpt.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ulpt.ko
>Reading symbols from /boot/kernel/uhci.ko...Reading symbols from /usr/lib/debug//boot/kernel/uhci.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/uhci.ko
>Reading symbols from /boot/kernel/ichsmb.ko...Reading symbols from /usr/lib/debug//boot/kernel/ichsmb.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ichsmb.ko
>Reading symbols from /boot/kernel/smbus.ko...Reading symbols from /usr/lib/debug//boot/kernel/smbus.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/smbus.ko
>Reading symbols from /boot/kernel/wlan_wep.ko...Reading symbols from /usr/lib/debug//boot/kernel/wlan_wep.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/wlan_wep.ko
>Reading symbols from /boot/kernel/agp.ko...Reading symbols from /usr/lib/debug//boot/kernel/agp.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/agp.ko
>Reading symbols from /boot/kernel/ipdivert.ko...Reading symbols from /usr/lib/debug//boot/kernel/ipdivert.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ipdivert.ko
>Reading symbols from /boot/kernel/wlan_ccmp.ko...Reading symbols from /usr/lib/debug//boot/kernel/wlan_ccmp.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/wlan_ccmp.ko
>Reading symbols from /boot/kernel/wlan_amrr.ko...Reading symbols from /usr/lib/debug//boot/kernel/wlan_amrr.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/wlan_amrr.ko
>Reading symbols from /boot/kernel/ums.ko...Reading symbols from /usr/lib/debug//boot/kernel/ums.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ums.ko
>Reading symbols from /boot/kernel/uftdi.ko...Reading symbols from /usr/lib/debug//boot/kernel/uftdi.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/uftdi.ko
>Reading symbols from /boot/kernel/ucom.ko...Reading symbols from /usr/lib/debug//boot/kernel/ucom.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ucom.ko
>Reading symbols from /boot/kernel/speaker.ko...Reading symbols from /usr/lib/debug//boot/kernel/speaker.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/speaker.ko
>Reading symbols from /boot/kernel/smb.ko...Reading symbols from /usr/lib/debug//boot/kernel/smb.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/smb.ko
>Reading symbols from /boot/kernel/sdhci_pci.ko...Reading symbols from /usr/lib/debug//boot/kernel/sdhci_pci.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/sdhci_pci.ko
>Reading symbols from /boot/kernel/sdhci.ko...Reading symbols from /usr/lib/debug//boot/kernel/sdhci.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/sdhci.ko
>Reading symbols from /boot/kernel/wlan_tkip.ko...Reading symbols from /usr/lib/debug//boot/kernel/wlan_tkip.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/wlan_tkip.ko
>Reading symbols from /boot/kernel/if_axe.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_axe.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/if_axe.ko
>Reading symbols from /boot/kernel/uether.ko...Reading symbols from /usr/lib/debug//boot/kernel/uether.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/uether.ko
>Reading symbols from /boot/kernel/if_tap.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_tap.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/if_tap.ko
>Reading symbols from /boot/kernel/geom_label.ko...Reading symbols from /usr/lib/debug//boot/kernel/geom_label.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/geom_label.ko
>Reading symbols from /boot/kernel/zfs.ko...Reading symbols from /usr/lib/debug//boot/kernel/zfs.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/zfs.ko
>Reading symbols from /boot/kernel/opensolaris.ko...Reading symbols from /usr/lib/debug//boot/kernel/opensolaris.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/opensolaris.ko
>Reading symbols from /boot/kernel/geom_md.ko...Reading symbols from /usr/lib/debug//boot/kernel/geom_md.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/geom_md.ko
>Reading symbols from /boot/kernel/procfs.ko...Reading symbols from /usr/lib/debug//boot/kernel/procfs.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/procfs.ko
>Reading symbols from /boot/kernel/pseudofs.ko...Reading symbols from /usr/lib/debug//boot/kernel/pseudofs.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/pseudofs.ko
>Reading symbols from /boot/kernel/fdescfs.ko...Reading symbols from /usr/lib/debug//boot/kernel/fdescfs.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/fdescfs.ko
>Reading symbols from /boot/kernel/i915kms.ko...Reading symbols from /usr/lib/debug//boot/kernel/i915kms.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/i915kms.ko
>Reading symbols from /boot/kernel/drm.ko...Reading symbols from /usr/lib/debug//boot/kernel/drm.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/drm.ko
>Reading symbols from /boot/kernel/linuxkpi.ko...Reading symbols from /usr/lib/debug//boot/kernel/linuxkpi.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/linuxkpi.ko
>Reading symbols from /boot/modules/linuxkpi_gplv2.ko...done.
>Loaded symbols for /boot/modules/linuxkpi_gplv2.ko
>Reading symbols from /boot/modules/debugfs.ko...done.
>Loaded symbols for /boot/modules/debugfs.ko
>Reading symbols from /boot/kernel/ng_socket.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_socket.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_socket.ko
>Reading symbols from /boot/kernel/netgraph.ko...Reading symbols from /usr/lib/debug//boot/kernel/netgraph.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/netgraph.ko
>Reading symbols from /boot/kernel/ng_mppc.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_mppc.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_mppc.ko
>Reading symbols from /boot/kernel/rc4.ko...Reading symbols from /usr/lib/debug//boot/kernel/rc4.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/rc4.ko
>Reading symbols from /boot/kernel/ng_iface.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_iface.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_iface.ko
>Reading symbols from /boot/kernel/ng_ppp.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_ppp.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_ppp.ko
>Reading symbols from /boot/kernel/ng_tee.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_tee.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_tee.ko
>Reading symbols from /boot/kernel/ng_ether.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_ether.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_ether.ko
>Reading symbols from /boot/kernel/ng_pppoe.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_pppoe.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_pppoe.ko
>Reading symbols from /boot/kernel/ng_nat.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_nat.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_nat.ko
>Reading symbols from /boot/kernel/libalias.ko...Reading symbols from /usr/lib/debug//boot/kernel/libalias.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/libalias.ko
>Reading symbols from /boot/kernel/ng_tcpmss.ko...Reading symbols from /usr/lib/debug//boot/kernel/ng_tcpmss.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/ng_tcpmss.ko
>Reading symbols from /boot/kernel/green_saver.ko...Reading symbols from /usr/lib/debug//boot/kernel/green_saver.ko.debug...done.
>done.
>Loaded symbols for /boot/kernel/green_saver.ko
>#0  doadump (textdump=1) at pcpu.h:230
>230     pcpu.h: No such file or directory.
>        in pcpu.h
>(kgdb) backtrace
>#0  doadump (textdump=1) at pcpu.h:230
>#1  0xffffffff80498950 in kern_reboot (howto=260)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_shutdown.c:446
>#2  0xffffffff80498de3 in vpanic (fmt=<value optimized out>, 
>    ap=<value optimized out>)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_shutdown.c:872
>#3  0xffffffff80498bd3 in panic (fmt=<value optimized out>)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_shutdown.c:799
>#4  0xffffffff8073bf3f in trap_fatal (frame=0xfffffe001e711610, eva=0)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/trap.c:929
>#5  0xffffffff8073bf99 in trap_pfault (frame=0xfffffe001e711610, usermode=0)
>    at pcpu.h:230
>#6  0xffffffff8073b5be in trap (frame=0xfffffe001e711610)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/trap.c:441
>#7  0xffffffff807180b5 in calltrap ()
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/exception.S:232
>#8  0xffffffff8045230b in kqueue_kevent (kq=0xfffff8000f0f0000, 
>    td=0xfffff8000fb36000, nchanges=<value optimized out>, nevents=64, 
>    k_ops=0x0, timeout=0xfffff8000fb36000) at uma.h:408
>#9  0xffffffff80451545 in kern_kevent (td=0xfffff8000fb36000, 
>    fd=<value optimized out>, nchanges=0, nevents=64, 
>    k_ops=0xfffffe001e711aa0, timeout=0x0)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_event.c:1265
>---Type <return> to continue, or q <return> to quit---
>#10 0xffffffff80451251 in kern_kevent_generic (td=0xfffff8000fb36000, 
>    uap=0xfffffe001e711a70, k_ops=0xfffffe001e711aa0, 
>    struct_name=0xffffffff808019d3 "kevent")
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_event.c:1064
>#11 0xffffffff80451171 in sys_kevent (td=<value optimized out>, 
>    uap=<value optimized out>)
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/kern/kern_event.c:1037
>#12 0xffffffff8073c9fb in amd64_syscall (td=0xfffff8000fb36000, traced=0)
>    at subr_syscall.c:135
>#13 0xffffffff8071899d in fast_syscall_common ()
>    at /.../hal/z/SRC/FreeBSD/releng/12.0/sys/amd64/amd64/exception.S:504
>#14 0x0000000800c1c1ea in ?? ()
>Previous frame inner to this frame (corrupt stack?)
>Current language:  auto; currently minimal
>(kgdb)

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Attachments on bug 234567: 200707 | 200708 | 200710 | 200712 | 200794