RFR(s-ish): 8191101: Show register content in hs-err file on assert

[Thomas Stüfe]

On Mon, Nov 27, 2017 at 5:18 PM, Andrew Dinn <adinn at redhat.com> wrote:

> Hi Thomas,
>
> On 27/11/17 13:14, Thomas Stüfe wrote:
> > thanks a lot for the quick review!
>
> Thanks for the fix :-)
>
> > Okay, I see your point. I will revert back to ShouldNotReachHere() and
> > change the jtreg test to recognize that as a positive test.
>
> Ok, thanks.
>
> > Could you please quickly run
> >
> > java -XX:+ShowRegistersOnAssert -XX:ErrorHandlerTest=1
> >
> > on aarch64 and take a quick glance at the hs-err file, whether it
> > contains register output?
> Oh my! The relevant (beautiful) output is appended below. Very nice.
>
>
:) Cool! Thanks for testing!

I'll post an update with the corrected vmError.cpp soon

..Thomas


> regards,
>
>
> Andrew Dinn
> -----------
> Senior Principal Software Engineer
> Red Hat UK Ltd
> Registered in England and Wales under Company Registration No. 03798903
> Directors: Michael Cunningham, Michael ("Mike") O'Neill, Eric Shander
>
>
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> #  Internal Error
> (/home/adinn/openjdk/jdkdev/hs/src/hotspot/share/
> utilities/vmError.cpp:1660),
> pid=29190, tid=29191
>
>   . . .
>
> Registers:
> R0 =0x000003ff83340000 is an unknown value
> R1 =0x0000000000000058 is an unknown value
> R2 =0x000003ff826da55c: <offset 0x00000000011ca55c> in
> /home/adinn/openjdk/jdkdev/hs/build/linux-aarch64-normal-
> server-slowdebug/jdk/lib/server/libjvm.so
> at 0x000003ff81510000
> R3 =0x000003ff826da55c: <offset 0x00000000011ca55c> in
> /home/adinn/openjdk/jdkdev/hs/build/linux-aarch64-normal-
> server-slowdebug/jdk/lib/server/libjvm.so
> at 0x000003ff81510000
> R4 =0x000003ff812fe748 is pointing into the stack for thread:
> 0x000003ff7c018000
> R5 =0x000003ff7c016a28 is an unknown value
> R6 =0x000003ff83360000 is an unknown value
> R7 =0x0000000000000000 is an unknown value
> R8 =0x00000000000c4c96 is an unknown value
> R9 =0x00000000000c4c96 is an unknown value
> R10=0x0000000000004438 is an unknown value
> R11=0x000000000a0751f8 is an unknown value
> R12=0x0000000000000018 is an unknown value
> R13=0xffffffffa5e40b06 is an unknown value
> R14=0x001b901602000000 is an unknown value
> R15=0x003b9aca00000000 is an unknown value
> R16=0x000003ff82fc6bc0: <offset 0x0000000001ab6bc0> in
> /home/adinn/openjdk/jdkdev/hs/build/linux-aarch64-normal-
> server-slowdebug/jdk/lib/server/libjvm.so
> at 0x000003ff81510000
> R17=0x000003ff831548ac: memset+0x0000000000000000 in /lib64/libc.so.6 at
> 0x000003ff830d0000
> R18=0x00000006cf9f754a is pointing into object: 0x00000006cf9f7538
> [B
> {0x00000006cf9f7538} - klass: {type array byte}
>  - length: 21
>  -   0: 73 s
>  -   1: 75 u
>  -   2: 6e n
>  -   3: 2e .
>  -   4: 62 b
>  -   5: 6f o
>  -   6: 6f o
>  -   7: 74 t
>  -   8: 2e .
>  -   9: 6c l
>  -  10: 69 i
>  -  11: 62 b
>  -  12: 72 r
>  -  13: 61 a
>  -  14: 72 r
>  -  15: 79 y
>  -  16: 2e .
>  -  17: 70 p
>  -  18: 61 a
>  -  19: 74 t
>  -  20: 68 h
> R19=0x0000000000000000 is an unknown value
> R20=0x000003ffe7d21468 is an unknown value
> R21=0x000003ff832f0000: <offset 0x0000000000030000> in
> /lib64/libpthread.so.0 at 0x000003ff832c0000
> R22=0x000003ff812feb10 is pointing into the stack for thread:
> 0x000003ff7c018000
> R23=0x000003ffe7d21468 is an unknown value
> R24=0x0000000000000000 is an unknown value
> R25=0x000003ffe7d21468 is an unknown value
> R26=0x000003ff832f4000: <offset 0x0000000000034000> in
> /lib64/libpthread.so.0 at 0x000003ff832c0000
> R27=0x000003ff812ff2c0 is pointing into the stack for thread:
> 0x000003ff7c018000
> R28=0x000003ff812ff8f0 is pointing into the stack for thread:
> 0x000003ff7c018000
> R29=0x000003ff812fe750 is pointing into the stack for thread:
> 0x000003ff7c018000
> R30=0x000003ff826da518: <offset 0x00000000011ca518> in
> /home/adinn/openjdk/jdkdev/hs/build/linux-aarch64-normal-
> server-slowdebug/jdk/lib/server/libjvm.so
> at 0x000003ff81510000
>
> Top of Stack: (sp=0x000003ff812fe690)
>   . . .
>