Re: [PATCH] iommu/qcom: fix NULL pointer dereference during probe deferral

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On Tue, Dec 31, 2019 at 10:39:49PM -0500, Brian Masney wrote:
[...]
>     (kernel_init) from ret_from_fork (arch/arm/kernel/entry-common.S:156)
>     Exception stack(0xee89dfb0 to 0xee89dff8)
>     dfa0:                                     00000000 00000000 00000000 00000000
>     dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>     dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
>     Code: e92d4070 e1a04000 e3a01004 e240501c (e5930014)

This looks like ARM code...

>     All code
>     ========
>        0:	70 40                	jo     0x42
>        2:	2d e9 00 40 a0       	sub    $0xa04000e9,%eax
>        7:	e1 04                	loope  0xd
>        9:	10 a0 e3 1c 50 40    	adc    %ah,0x40501ce3(%rax)
>        f:	e2 14                	loop   0x25
>       11:*	00                   	.byte 0x0		<-- trapping instruction
>       12:	93                   	xchg   %eax,%ebx
>       13:	e5                   	.byte 0xe5

... disassembled as x86 code.

I suspect that scripts/decodecode picked up the wrong architecture
somehow. Perhaps CROSS_COMPILE wasn't set?

> 
>     Code starting with the faulting instruction
>     ===========================================
>        0:	14 00                	adc    $0x0,%al
>        2:	93                   	xchg   %eax,%ebx
>        3:	e5                   	.byte 0xe5


Greetings and a happy new year,
Jonathan Neuschäfer

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