Re: Crash loading dtraceall

On 05/08/2019 5:55 pm, Mark Johnston wrote:
> On Wed, May 08, 2019 at 05:47:08PM -0500, Larry Rosenman wrote:
>> On 05/08/2019 5:29 pm, Mark Johnston wrote:
>> > On Wed, May 08, 2019 at 03:52:45PM -0500, Larry Rosenman wrote:
>> >> Greetings,
>> >>
>> >>     Somewhere between r346483 and r347241 loading dtraceall causes a
>> >>     crash.  I have the cores and kernels.
>> >>
>> >>     It's hard for me to bisect more than this, as the box is remote.
>> >>
>> >>     What more do you need?  (this dump is fropm r347355).
>> >
>> > Please visit frame 8 and print *lf.
>> >
>> #9  fbt_provide_module_function (lf=0xfffff800020ff000, symindx=30763,
>> symval=0xfffffe00d74d7e00, opaque=0xfffffe00d74d7e50) at
>> /usr/src/sys/cddl/dev/fbt/x86/fbt_isa.c:191
>> 191			if (*instr == FBT_PUSHL_EBP)
>> (kgdb) print *lf
>> $1 = {ops = 0xfffff800020f6000, refs = 202, userrefs = 1, flags = 1,
>> link = {tqe_next = 0xfffff800020fec00, tqe_prev = 0xffffffff80c767d0
>> <linker_files>}, filename = 0xfffff80002101030 "kernel",
>>    pathname = 0xfffff80002104080 "/boot/kernel/kernel", id = 1, 
>> address =
>> 0xffffffff80200000 "\177ELF\002\001\001\t", size = 17612816, 
>> ctors_addr
>> = 0x0, ctors_size = 0, ndeps = 0, deps = 0x0, common = {stqh_first =
>> 0x0,
>>      stqh_last = 0xfffff800020ff070}, modules = {tqh_first =
>> 0xfffff800020e5800, tqh_last = 0xfffff80002116790}, loaded = {tqe_next 
>> =
>> 0x0, tqe_prev = 0x0}, loadcnt = 1, nenabled = 0, fbt_nentries = 25062}
>> (kgdb)
> 
> And could you show the output of:
> 
> $ readelf -s /boot/kernel/kernel | grep "30763:"
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[root_at_oldtbh2 /var/crash]# readelf -s /boot/kernel/kernel | grep 
"30763:"
  30763: ffffffff80791310    75 IFUNC   GLOBAL DEFAULT    8 x86_rng_store
[root_at_oldtbh2 /var/crash]#


-- 
Larry Rosenman                     http://people.freebsd.org/~ler
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