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pshipton avatar pshipton commented on June 9, 2024

@hzongaro fyi

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hzongaro avatar hzongaro commented on June 9, 2024

gpr8 contains 000000004C559870 and the inaccessible address is 000000004C559000. It looks like the upper 4 bytes of the register were set to zero or only the lower four bytes of an address were loaded.

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hzongaro avatar hzongaro commented on June 9, 2024

It looks like it's crashing while processing this GlRegDeps:

n40n      ificmplt --> block_14 BBStart at n177n ()                                           [     0x3ff4c405720] bci=[-1,38,-] rc=0 vc=345 vn=- li=4 udi=- nc=3 flg=0x20
n34n        ==>isub
n18n        ==>iload
n210n       GlRegDeps ()                                                                      [     0x3ff4c483160] bci=[-1,38,-] rc=1 vc=345 vn=- li=4 udi=- nc=3 flg=0x20                      
n207n         PassThrough GPR2                                                                [     0x3ff4c483070] bci=[-1,6,-] rc=1 vc=345 vn=- li=4 udi=- nc=1
n15n            ==>aload                       
n208n         PassThrough GPR1                                                                [     0x3ff4c4830c0] bci=[-1,1,-] rc=1 vc=345 vn=- li=4 udi=- nc=1
n12n            ==>aload
n209n         PassThrough GPR6                                                                [     0x3ff4c483110] bci=[-1,32,-] rc=1 vc=345 vn=- li=4 udi=- nc=1
n34n            ==>isub
n8n       BBEnd </block_4>

It looks like n15n has an incorrect reference count:

n15n              aload  other<parm 1 Lsun/nio/ch/NativeSocketAddress;>[#400  Parm] [flags 0xc0000107 0x0 ] (X!=0 X>=0 )  [     0x3ff4c404f50] bci=[-1,6,-] rc=-1 vc=346 vn=- li=2 udi=- nc=0 flg=0x104

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hzongaro avatar hzongaro commented on June 9, 2024

I haven't been able to reproduce this in grinder runs with EXTRA_OPTIONS set to -XX:+MergeCompilerOptions -Xjit:{sun/nio/ch/NativeSocketAddress.mismatch*}(log=nativesocketaddress.log,traceCG). The jitdumps produced in the original failure and the failure in the grinder run reported in the original comment also failed to reproduce the problem during the recompilation.

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