linux-kernel - Re: kernel 6.2 stuck at boot (efi_call

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Date:   Tue, 18 Apr 2023 07:42:47 +0200
From:   Andrea Righi <andrea.righi@...onical.com>
To:     Darren Hart <darren@...amperecomputing.com>
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Paolo Pisati <paolo.pisati@...onical.com>,
        linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: kernel 6.2 stuck at boot (efi_call_rts) on arm64

On Mon, Apr 17, 2023 at 03:05:18PM -0700, Darren Hart wrote:
> On Thu, Apr 13, 2023 at 10:24:38PM +0200, Andrea Righi wrote:
> > 
> > Not sure if it's a similar issue, but I have found another Ampere box
> > that is booting fine with your fixes, but the eifvars.sh kselftest is
> > failing with some I/O errors, specifically:
> 
> Thanks for reporting. Can you confirm this worked reliably for you prior
> to v6.1?
> 
> --
> Darren

I tested again and I confirm that after a reboot everything looks fine.
Maybe EFI was messed up with a previous test and the latest kernel fixes
everything. Anyway this issue seems resolved for me.

Thanks,
-Andrea

> 
> > 
> > $ sudo ./efivarfs.sh
> > --------------------
> > running test_create
> > --------------------
> > ./efivarfs.sh: line 58: printf: write error: Input/output error
> > /sys/firmware/efi/efivars/test_create-210be57c-9849-4fc7-a635-e6382d1aec27 has invalid size
> >   [FAIL]
> > --------------------
> > running test_create_empty
> > --------------------
> >   [PASS]
> > --------------------
> > running test_create_read
> > --------------------
> >   [PASS]
> > --------------------
> > running test_delete
> > --------------------
> > ./efivarfs.sh: line 103: printf: write error: Input/output error
> >   [PASS]
> > --------------------
> > running test_zero_size_delete
> > --------------------
> > ./efivarfs.sh: line 126: printf: write error: Input/output error
> > ./efivarfs.sh: line 134: printf: write error: Input/output error
> > /sys/firmware/efi/efivars/test_zero_size_delete-210be57c-9849-4fc7-a635-e6382d1aec27 should have been deleted
> >   [FAIL]
> > --------------------
> > running test_open_unlink
> > --------------------
> > open(O_WRONLY): Operation not permitted
> >   [FAIL]
> > --------------------
> > running test_valid_filenames
> > --------------------
> > ./efivarfs.sh: line 158: printf: write error: Input/output error
> > ./efivarfs.sh: line 158: printf: write error: Input/output error
> > ./efivarfs.sh: line 158: printf: write error: Input/output error
> > ./efivarfs.sh: line 158: printf: write error: Input/output error
> >   [PASS]
> > --------------------
> > running test_invalid_filenames
> > --------------------
> >   [PASS]
> > 
> > If it helps:
> > 
> > $ sudo hexdump -C /sys/firmware/dmi/entries/4-0/raw
> > 00000000  04 30 04 00 01 03 fe 02  c1 d0 3f 41 00 00 00 00  |.0........?A....|
> > 00000010  03 8a 72 06 b8 0b f0 0a  41 06 05 00 06 00 07 00  |..r.....A.......|
> > 00000020  04 05 06 50 50 50 04 00  01 01 01 00 01 00 01 00  |...PPP..........|
> > 00000030  43 50 55 20 31 00 41 6d  70 65 72 65 28 52 29 00  |CPU 1.Ampere(R).|
> > 00000040  41 6d 70 65 72 65 28 52  29 20 41 6c 74 72 61 28  |Ampere(R) Altra(|
> > 00000050  52 29 20 50 72 6f 63 65  73 73 6f 72 00 30 30 30  |R) Processor.000|
> > 00000060  30 30 30 30 30 30 30 30  30 30 30 30 30 30 32 35  |0000000000000025|
> > 00000070  35 30 32 30 39 30 33 33  38 36 35 42 34 00 30 30  |50209033865B4.00|
> > 00000080  30 30 30 30 30 31 00 51  38 30 2d 33 30 00 00     |000001.Q80-30..|
> > 0000008f
> > 
> > I guess EFI is not very reliable here...
> > 
> > -Andrea
> 
> -- 
> Darren Hart
> Ampere Computing / OS and Kernel