Re: arm64: perf test 26 rpi4 oops

[Mike Galbraith]

On Tue, 2023-08-01 at 01:27 +0200, Mike Galbraith wrote:
> On Mon, 2023-07-31 at 22:54 +0100, Lorenzo Stoakes wrote:
> >
> > Posted a fix at:-
> >
> > https://lore.kernel.org/all/20230731215021.70911-1-lstoakes@xxxxxxxxx/
> >
> > Please give that a go and indicate whether that resolves the issue.
>
> Yup, that fixed the oops issue.

Heh, using Jiri's pick a spot from /proc/kallsyms test...

root@rpi4:~# cat /proc/kallsyms | grep ksys_read
ffffffe950baf7f8 T ksys_readahead
ffffffe950c38708 T ksys_read
root@rpi4:~# objdump -d --start-address=0xffffffe950c38708 --stop-address=0xffffffe950c3870a /proc/kcore

/proc/kcore:     file format elf64-littleaarch64


Disassembly of section load1:

ffffffe950c38708 <load1+0x238708>:
ffffffe950c38708:       Address 0xffffffe950c38708 is out of bounds.

objdump: error: /proc/kcore(load2) is too large (0x3de8000000 bytes)
objdump: Reading section load2 failed because: memory exhausted
root@rpi4:~# dmesg|tail -2
[  979.003019] __vm_enough_memory: pid: 12439, comm: objdump, not enough memory for the allocation
[  979.003080] __vm_enough_memory: pid: 12439, comm: objdump, not enough memory for the allocation