Upstream has accepted the patch and added it to the v6.5 stable series.
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.5.9=63565e1cbfb59da059dd322054840eb6a0019e65
** Changed in: linux-meta (Ubuntu)
Importance: Undecided => High
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** Also affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2034705
Title:
efivar fails to read variables
Subiquity users trying to install 23.10 on Apple hardware (amd64) have
been running into problems as well because of this issue.
Thank you Heinrich for sending the patch upstream!
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On the off chance that this issue has a broader impact I will leave a
reference to https://answers.launchpad.net/ubuntu/+question/708251
wherein similar behaviours are being observed with 6.5.0-9-generic on
amd64.
efivar -l returns: "efivar: error listing variables: Function not
implemented", yet
With kernel 6.5.0-6-generic #6.1-Ubuntu SMP Thu Sep 21 12:51:18 from
ppa:esmil/ppa efivar works fine.
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Title:
efivar
Patch sent upstream https://lore.kernel.org/linux-
efi/20230909180812.10904-1-heinrich.schucha...@canonical.com/T/#u.
Without this patch the Ubuntu installer on systems using U-Boot (e.g.
riscv64) will fail.
** Changed in: linux-meta-riscv (Ubuntu)
Assignee: Heinrich Schuchardt (xypron) =>
** Tags added: patch
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Title:
efivar fails to read variables
Status in efivar package in Ubuntu:
Invalid
Status in
** Patch added: "Draft Linux patch"
https://bugs.launchpad.net/ubuntu/+source/linux-meta-riscv/+bug/2034705/+attachment/5699289/+files/0001-efivarfs-fix-statfs-on-efivarfs.patch
** Changed in: linux-meta-riscv (Ubuntu)
Assignee: (unassigned) => Heinrich Schuchardt (xypron)
** Changed
U-Boot currently does not implement QueryVariableInfo at runtime. This
function is not needed for a read only efivarfs. I think it would be
more appropriate to check if GetVariable is enabled in
efi.runtime_supported_mask.
** Changed in: efivar (Ubuntu)
Status: New => Invalid
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You
Kernel commit d86ffcb1 ("efivarfs: expose used and total size")
introduced an EFI runtime call QueryVariableInfo().
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In U-Boot's EFI_RT_PROPERTIES_TABLE_VERSION the flag
EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO is not set.
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Title:
efivar
The problem is due to the kernel not supporting the deprecated statfs()
call on the efivarfs file system.
To demonstrate this I have created the following program (statfs.c):
#include
#include
int main(int argc, char *argv[])
{
struct statfs s;
int ret;
if (argc < 2)
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