Public bug reported:

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The 4.15.9 upstream stable
       patch set is now available. It should be included in the Ubuntu
       kernel as well.

       git://git.kernel.org/

    TEST CASE: TBD

       The following patches from the 4.15.9 stable release shall be
applied:

bpf: fix mlock precharge on arraymaps
bpf: fix memory leak in lpm_trie map_free callback function
bpf: fix rcu lockdep warning for lpm_trie map_free callback
bpf, x64: implement retpoline for tail call
bpf, arm64: fix out of bounds access in tail call
bpf: add schedule points in percpu arrays management
bpf: allow xadd only on aligned memory
bpf, ppc64: fix out of bounds access in tail call
scsi: mpt3sas: fix oops in error handlers after shutdown/unload
scsi: mpt3sas: wait for and flush running commands on shutdown/unload
KVM: x86: fix backward migration with async_PF
Linux 4.15.9

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: kernel-stable-tracking-bug

** Tags added: kernel-stable-tracking-bug

** Description changed:

+ SRU Justification
  
-     SRU Justification
+     Impact:
+        The upstream process for stable tree updates is quite similar
+        in scope to the Ubuntu SRU process, e.g., each patch has to
+        demonstrably fix a bug, and each patch is vetted by upstream
+        by originating either directly from a mainline/stable Linux tree or
+        a minimally backported form of that patch. The 4.15.9 upstream stable
+        patch set is now available. It should be included in the Ubuntu
+        kernel as well.
  
-     Impact:
-        The upstream process for stable tree updates is quite similar
-        in scope to the Ubuntu SRU process, e.g., each patch has to
-        demonstrably fix a bug, and each patch is vetted by upstream
-        by originating either directly from a mainline/stable Linux tree or
-        a minimally backported form of that patch. The 4.15.9 upstream stable
-        patch set is now available. It should be included in the Ubuntu
-        kernel as well.
+        git://git.kernel.org/
  
-        git://git.kernel.org/
+     TEST CASE: TBD
  
-     TEST CASE: TBD
+        The following patches from the 4.15.9 stable release shall be
+ applied:
  
-        The following patches from the 4.15.9 stable release shall be
- applied:
+ bpf: fix mlock precharge on arraymaps
+ bpf: fix memory leak in lpm_trie map_free callback function
+ bpf: fix rcu lockdep warning for lpm_trie map_free callback
+ bpf, x64: implement retpoline for tail call
+ bpf, arm64: fix out of bounds access in tail call
+ bpf: add schedule points in percpu arrays management
+ bpf: allow xadd only on aligned memory
+ bpf, ppc64: fix out of bounds access in tail call
+ scsi: mpt3sas: fix oops in error handlers after shutdown/unload
+ scsi: mpt3sas: wait for and flush running commands on shutdown/unload
+ KVM: x86: fix backward migration with async_PF
+ Linux 4.15.9

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https://bugs.launchpad.net/bugs/1755275

Title:
  Bionic update to 4.15.9 stable release

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