ACK: [SRU][canonical-kernel-snaps][PATCH 1/1] nvidia_hooks: replace uname -r calls

[Stewart Hore]

On Thu, Jun 05, 2025 at 12:55:42PM +1000, Aaron Jauregui wrote:
> BugLink: https://bugs.launchpad.net/bugs/2111937
> 
> The previous assumption that the currently running kernel corresponds to
> the parent kernel snap of the component being installed/refreshed does
> not necessarily hold true. Modules were found to be installed in the
> previous kernel snap's path in some cases.  Replacing uname -r with the
> parent kernel snap's /modules/<kernel_version> fixes this issue.
> 
> Signed-off-by: Aaron Jauregui <aaron.jauregui at canonical.com>
> ---
>  hooks/module/install.module            | 7 +++++--
>  hooks/module/post-refresh.module       | 7 +++++--
>  hooks/module/remove.module             | 6 ++++--
>  hooks/nvidia-ko/install.nvidia-ko      | 9 ++++++---
>  hooks/nvidia-ko/post-refresh.nvidia-ko | 9 ++++++---
>  hooks/nvidia-ko/remove.nvidia-ko       | 5 ++++-
>  6 files changed, 30 insertions(+), 13 deletions(-)
> 
> diff --git a/hooks/module/install.module b/hooks/module/install.module
> index d61ae8b..f1e6490 100755
> --- a/hooks/module/install.module
> +++ b/hooks/module/install.module
> @@ -3,13 +3,16 @@
>  
>  set -eux
>  
> +# Get kernel version, parent snap may not be currently running kernel
> +kernel_ver=$(basename "$SNAP"/modules/*)
> +
>  name=$(echo "$SNAP_COMPONENT_NAME" | cut -d+ -f2)
>  
>  # nouveau needs a special case to override nvidia modules
>  if [ "$name" = "nouveau-ko" ] ; then
> -	dest="$SNAP_DATA/modules/$(uname -r)/graphics"
> +	dest="$SNAP_DATA/modules/$kernel_ver/graphics"
>  else
> -	dest="$SNAP_DATA/modules/$(uname -r)/$name"
> +	dest="$SNAP_DATA/modules/$kernel_ver/$name"
>  fi
>  
>  
> diff --git a/hooks/module/post-refresh.module b/hooks/module/post-refresh.module
> index d61ae8b..f1e6490 100755
> --- a/hooks/module/post-refresh.module
> +++ b/hooks/module/post-refresh.module
> @@ -3,13 +3,16 @@
>  
>  set -eux
>  
> +# Get kernel version, parent snap may not be currently running kernel
> +kernel_ver=$(basename "$SNAP"/modules/*)
> +
>  name=$(echo "$SNAP_COMPONENT_NAME" | cut -d+ -f2)
>  
>  # nouveau needs a special case to override nvidia modules
>  if [ "$name" = "nouveau-ko" ] ; then
> -	dest="$SNAP_DATA/modules/$(uname -r)/graphics"
> +	dest="$SNAP_DATA/modules/$kernel_ver/graphics"
>  else
> -	dest="$SNAP_DATA/modules/$(uname -r)/$name"
> +	dest="$SNAP_DATA/modules/$kernel_ver/$name"
>  fi
>  
>  
> diff --git a/hooks/module/remove.module b/hooks/module/remove.module
> index bada5fe..c8a65e1 100755
> --- a/hooks/module/remove.module
> +++ b/hooks/module/remove.module
> @@ -3,11 +3,13 @@
>  
>  set -eux
>  
> +# Get kernel version, parent snap may not be currently running kernel
> +kernel_ver=$(basename "$SNAP"/modules/*)
>  name=$(echo "$SNAP_COMPONENT_NAME" | cut -d+ -f2)
>  if [ "$name" = "nouveau-ko" ] ; then
> -	dest="$SNAP_DATA/modules/$(uname -r)/graphics"
> +	dest="$SNAP_DATA/modules/$kernel_ver/graphics"
>  else
> -	dest="$SNAP_DATA/modules/$(uname -r)/$name"
> +	dest="$SNAP_DATA/modules/$kernel_ver/$name"
>  fi
>  
>  rm -rf "$dest"
> diff --git a/hooks/nvidia-ko/install.nvidia-ko b/hooks/nvidia-ko/install.nvidia-ko
> index e11d532..04352e3 100755
> --- a/hooks/nvidia-ko/install.nvidia-ko
> +++ b/hooks/nvidia-ko/install.nvidia-ko
> @@ -3,6 +3,9 @@
>  
>  set -eux
>  
> +# Get kernel version, parent snap may not be currently running kernel
> +kernel_ver=$(basename "$SNAP"/modules/*)
> +
>  # First setup the kernel modules
>  tmp_dir="/tmp/nvidia-ko"
>  rm -rf "$tmp_dir"
> @@ -17,9 +20,9 @@ sed -i "s|make|$SNAP_COMPONENT/bin/make|" BUILD
>  LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$SNAP_COMPONENT/lib/$(uname -m)-linux-gnu" sh BUILD
>  
>  # Clean up directory before copying modules
> -rm -rf "$SNAP_DATA/modules/$(uname -r)/graphics"
> -mkdir -p "$SNAP_DATA/modules/$(uname -r)/graphics"
> +rm -rf "$SNAP_DATA/modules/$kernel_ver/graphics"
> +mkdir -p "$SNAP_DATA/modules/$kernel_ver/graphics"
>  
> -mv ../*.ko "$SNAP_DATA/modules/$(uname -r)/graphics/"
> +mv ../*.ko "$SNAP_DATA/modules/$kernel_ver/graphics/"
>  
>  rm -rf "$tmp_dir"
> diff --git a/hooks/nvidia-ko/post-refresh.nvidia-ko b/hooks/nvidia-ko/post-refresh.nvidia-ko
> index c4b5285..6d99aec 100755
> --- a/hooks/nvidia-ko/post-refresh.nvidia-ko
> +++ b/hooks/nvidia-ko/post-refresh.nvidia-ko
> @@ -3,6 +3,9 @@
>  
>  set -eux
>  
> +# Get kernel version, parent snap may not be currently running kernel
> +kernel_ver=$(basename "$SNAP"/modules/*)
> +
>  # First setup the kernel modules
>  tmp_dir="/tmp/nvidia-ko"
>  rm -rf $tmp_dir
> @@ -17,9 +20,9 @@ sed -i "s|make|$SNAP_COMPONENT/bin/make|" BUILD
>  LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$SNAP_COMPONENT/lib/$(uname -m)-linux-gnu sh BUILD
>  
>  # Clean up directory before copying modules
> -rm -rf "$SNAP_DATA/modules/$(uname -r)/graphics"
> -mkdir -p "$SNAP_DATA/modules/$(uname -r)/graphics"
> +rm -rf "$SNAP_DATA/modules/$kernel_ver/graphics"
> +mkdir -p "$SNAP_DATA/modules/$kernel_ver/graphics"
>  
> -mv ../*.ko "$SNAP_DATA/modules/$(uname -r)/graphics/"
> +mv ../*.ko "$SNAP_DATA/modules/$kernel_ver/graphics/"
>  
>  rm -rf $tmp_dir
> diff --git a/hooks/nvidia-ko/remove.nvidia-ko b/hooks/nvidia-ko/remove.nvidia-ko
> index 5e2831d..b1aab1f 100755
> --- a/hooks/nvidia-ko/remove.nvidia-ko
> +++ b/hooks/nvidia-ko/remove.nvidia-ko
> @@ -3,4 +3,7 @@
>  
>  set -eux
>  
> -rm -rf "$SNAP_DATA/modules/$(uname -r)/graphics"
> +# Get kernel version, parent snap may not be currently running kernel
> +kernel_ver=$(basename "$SNAP"/modules/*)
> +
> +rm -rf "$SNAP_DATA/modules/$kernel_ver/graphics"
> -- 
> 2.43.0
> 

Acked-by: Stewart Hore <stewart.hore at canonical.com>
 
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