[Bug 234985] kernel panic when destroying epair interface of vnet jail after using ifconfig inside the jail

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234985

Alexander Leidinger <netchild at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |netchild at FreeBSD.org

--- Comment #3 from Alexander Leidinger <netchild at FreeBSD.org> ---
With r349853 I don't get a panic with your script, but if I assign an IP inside
the jail (jexec <id> ifconfig inet 1.2.3.4) instead of just listing the
interfaces, it panics on destroy.

(kgdb) #0  __curthread () at /space/system/usr_src/sys/amd64/include/pcpu.h:246
#1  doadump (textdump=1) at /space/system/usr_src/sys/kern/kern_shutdown.c:392
#2  0xffffffff8050cf70 in kern_reboot (howto=260)
    at /space/system/usr_src/sys/kern/kern_shutdown.c:479
#3  0xffffffff8050d3e9 in vpanic (fmt=<optimized out>, ap=<optimized out>)
    at /space/system/usr_src/sys/kern/kern_shutdown.c:905
#4  0xffffffff8050d123 in panic (fmt=<unavailable>)
    at /space/system/usr_src/sys/kern/kern_shutdown.c:832
#5  0xffffffff807e758c in trap_fatal (frame=0xfffffe01598227c0, eva=0)
    at /space/system/usr_src/sys/amd64/amd64/trap.c:943
#6  0xffffffff807e698c in trap (frame=0xfffffe01598227c0)
    at /space/system/usr_src/sys/amd64/amd64/trap.c:221
#7  <signal handler called>
#8  0xffffffff805f2045 in strncmp (s1=<optimized out>, s2=<optimized out>,
    n=<optimized out>) at /space/system/usr_src/sys/libkern/strncmp.c:44
#9  0xffffffff80605d31 in ifunit_ref (name=0xfffffe0159822a20 "panic_test1b")
    at /space/system/usr_src/sys/net/if.c:2434
#10 0xffffffff80607ef8 in ifioctl (so=0xfffff809a1afd368, cmd=3223349536,
    data=0xfffffe0159822a20 "panic_test1b", td=0xfffff8014c83e5a0)
    at /space/system/usr_src/sys/net/if.c:3093
#11 0xffffffff8057658d in fo_ioctl (fp=<optimized out>, com=3223349536,
    data=0xfffff800020e2180, active_cred=0x0, td=0xfffff8014c83e5a0)
    at /space/system/usr_src/sys/sys/file.h:333
#12 kern_ioctl (td=0xfffff8014c83e5a0, fd=3, com=3223349536,
    data=0xfffff800020e2180 "")
    at /space/system/usr_src/sys/kern/sys_generic.c:800
#13 0xffffffff805762ad in sys_ioctl (td=0xfffff8014c83e5a0,
    uap=0xfffff8014c83e968) at /space/system/usr_src/sys/kern/sys_generic.c:712
#14 0xffffffff807e801a in syscallenter (td=0xfffff8014c83e5a0)
    at /space/system/usr_src/sys/amd64/amd64/../../kern/subr_syscall.c:135
#15 amd64_syscall (td=0xfffff8014c83e5a0, traced=0)
    at /space/system/usr_src/sys/amd64/amd64/trap.c:1181

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