[Bug 195859] Reproduceble panic with VIMAGE + if_bridge

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195859

--- Comment #2 from max.n.boyarov at gmail.com ---
(In reply to Craig Rodrigues from comment #1)

Same panic after apply patch.  But in my configuration i have 2 jails with
epairs in bridge


#1  0xffffffff80966327 in kern_reboot (howto=Unhandled dwarf expression opcode
0x93
)
    at /usr/src/sys/kern/kern_shutdown.c:447
#2  0xffffffff80966918 in vpanic (fmt=<value optimized out>,
    ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:746
#3  0xffffffff80966742 in kassert_panic (fmt=<value optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:634
#4  0xffffffff8095024a in __mtx_lock_flags (c=0xfffffe0069a26278,
opts=Unhandled dwarf expression op
code 0x93
)
    at /usr/src/sys/kern/kern_mutex.c:214
#5  0xffffffff8241457f in bridge_ifdetach (arg=<value optimized out>,
    ifp=0xfffff80105552800)
    at /usr/src/sys/modules/if_bridge/../../net/if_bridge.c:1814
#6  0xffffffff80a3794d in if_detach_internal (ifp=0xfffff80105552800, vmove=0)
    at /usr/src/sys/net/if.c:932
#7  0xffffffff80a375ea in if_detach (ifp=0x0) at /usr/src/sys/net/if.c:863
#8  0xffffffff80a43d16 in lo_clone_destroy (ifp=0xfffff80105552800)
    at /usr/src/sys/net/if_loop.c:116
#9  0xffffffff80a3f220 in if_clone_destroyif (ifc=0xfffff8000f00da80,
    ifp=<value optimized out>) at /usr/src/sys/net/if_clone.c:676
#10 0xffffffff80a3fae8 in if_clone_detach (ifc=<value optimized out>)
    at /usr/src/sys/net/if_clone.c:450
#11 0xffffffff80a43ba6 in vnet_loif_uninit (unused=<value optimized out>)
    at /usr/src/sys/net/if_loop.c:167
#12 0xffffffff80a55437 in vnet_destroy (vnet=0xfffff80105509380)
    at /usr/src/sys/net/vnet.c:593
#13 0xffffffff80939b9d in prison_deref (pr=0xffffffff81516eb0, flags=Cannot
access memory at address
 0x3
)
    at /usr/src/sys/kern/kern_jail.c:2582
#14 0xffffffff8093b224 in sys_jail_remove (td=<value optimized out>,
    uap=<value optimized out>) at /usr/src/sys/kern/kern_jail.c:2248
#15 0xffffffff80d9a90a in amd64_syscall (td=0xfffff8000f445940, traced=0)
    at subr_syscall.c:133
#16 0xffffffff80d78e6b in Xfast_syscall ()
    at /usr/src/sys/amd64/amd64/exception.S:395
#17 0x0000000800ec3b6a in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently minimal

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