Comment 23 for bug 2024500

List of 5.15 kernels available in the repo

root@compute81:~# apt search linux-image-5.15.*-generic

linux-image-5.15.0-25-generic/now 5.15.0-25.25 amd64 [installed,local] <--- everything works

linux-image-5.15.0-33-generic/focal-updates,focal-security,now 5.15.0-33.34~20.04.1 amd64 [installed] <-- VM hangs

linux-image-5.15.0-41-generic/focal-updates,focal-security,now 5.15.0-41.44~20.04.1 amd64 [installed] <-- VM hangs

Here's a diff of the kernel config files

root@compute81:~# diff -Naur /boot/config-5.15.0-25-generic /boot/config-5.15.0-33-generic
--- /boot/config-5.15.0-25-generic 2022-03-30 15:28:11.000000000 +0000
+++ /boot/config-5.15.0-33-generic 2022-05-19 14:04:01.000000000 +0000
@@ -1,23 +1,22 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 5.15.0-25-generic Kernel Configuration
+# Linux/x86 5.15.0-33-generic Kernel Configuration
 #
-CONFIG_CC_VERSION_TEXT="gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0"
+CONFIG_CC_VERSION_TEXT="gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0"
 CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=110200
+CONFIG_GCC_VERSION=90400
 CONFIG_CLANG_VERSION=0
 CONFIG_AS_IS_GNU=y
-CONFIG_AS_VERSION=23800
+CONFIG_AS_VERSION=23400
 CONFIG_LD_IS_BFD=y
-CONFIG_LD_VERSION=23800
+CONFIG_LD_VERSION=23400
 CONFIG_LLD_VERSION=0
 CONFIG_CC_CAN_LINK=y
 CONFIG_CC_CAN_LINK_STATIC=y
 CONFIG_CC_HAS_ASM_GOTO=y
-CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
 CONFIG_CC_HAS_ASM_INLINE=y
 CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
-CONFIG_PAHOLE_VERSION=122
+CONFIG_PAHOLE_VERSION=121
 CONFIG_IRQ_WORK=y
 CONFIG_BUILDTIME_TABLE_SORT=y
 CONFIG_THREAD_INFO_IN_TASK=y
@@ -47,7 +46,7 @@
 CONFIG_KERNEL_ZSTD=y
 CONFIG_DEFAULT_INIT=""
 CONFIG_DEFAULT_HOSTNAME="(none)"
-CONFIG_VERSION_SIGNATURE="Ubuntu 5.15.0-25.25-generic 5.15.30"
+CONFIG_VERSION_SIGNATURE="Ubuntu 5.15.0-33.34~20.04.1-generic 5.15.30"
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
 CONFIG_SYSVIPC_SYSCTL=y
@@ -508,6 +507,7 @@
 # CONFIG_LEGACY_VSYSCALL_NONE is not set
 # CONFIG_CMDLINE_BOOL is not set
 CONFIG_MODIFY_LDT_SYSCALL=y
+# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
 CONFIG_HAVE_LIVEPATCH=y
 CONFIG_LIVEPATCH=y
 # end of Processor type and features
@@ -841,6 +841,7 @@
 CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
 CONFIG_ARCH_HAS_ELFCORE_COMPAT=y
 CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y
+CONFIG_DYNAMIC_SIGFRAME=y

 #
 # GCOV-based kernel profiling
@@ -10282,7 +10283,25 @@
 CONFIG_EROFS_FS_SECURITY=y
 CONFIG_EROFS_FS_ZIP=y
 CONFIG_VBOXSF_FS=m
-# CONFIG_AUFS_FS is not set
+CONFIG_AUFS_FS=m
+CONFIG_AUFS_BRANCH_MAX_127=y
+# CONFIG_AUFS_BRANCH_MAX_511 is not set
+# CONFIG_AUFS_BRANCH_MAX_1023 is not set
+# CONFIG_AUFS_BRANCH_MAX_32767 is not set
+CONFIG_AUFS_SBILIST=y
+# CONFIG_AUFS_HNOTIFY is not set
+CONFIG_AUFS_EXPORT=y
+CONFIG_AUFS_INO_T_64=y
+CONFIG_AUFS_XATTR=y
+# CONFIG_AUFS_FHSM is not set
+# CONFIG_AUFS_RDU is not set
+CONFIG_AUFS_DIRREN=y
+# CONFIG_AUFS_SHWH is not set
+# CONFIG_AUFS_BR_RAMFS is not set
+# CONFIG_AUFS_BR_FUSE is not set
+CONFIG_AUFS_BR_HFSPLUS=y
+CONFIG_AUFS_BDEV_LOOP=y
+# CONFIG_AUFS_DEBUG is not set
 CONFIG_NETWORK_FILESYSTEMS=y
 CONFIG_NFS_FS=m
 CONFIG_NFS_V2=m
@@ -10428,7 +10447,7 @@
 CONFIG_ENCRYPTED_KEYS=y
 CONFIG_KEY_DH_OPERATIONS=y
 CONFIG_KEY_NOTIFICATIONS=y
-CONFIG_SECURITY_DMESG_RESTRICT=y
+# CONFIG_SECURITY_DMESG_RESTRICT is not set
 CONFIG_SECURITY_PERF_EVENTS_RESTRICT=y
 CONFIG_SECURITY=y
 CONFIG_SECURITYFS=y
@@ -10533,8 +10552,6 @@
 CONFIG_INIT_STACK_NONE=y
 CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y
 # CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
-CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
-# CONFIG_ZERO_CALL_USED_REGS is not set
 # end of Memory initialization
 # end of Kernel hardening options
 # end of Security options
@@ -10974,9 +10991,9 @@
 # CONFIG_DEBUG_INFO_REDUCED is not set
 # CONFIG_DEBUG_INFO_COMPRESSED is not set
 # CONFIG_DEBUG_INFO_SPLIT is not set
-# CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 # CONFIG_DEBUG_INFO_DWARF4 is not set
-CONFIG_DEBUG_INFO_DWARF5=y
+# CONFIG_DEBUG_INFO_DWARF5 is not set
 CONFIG_DEBUG_INFO_BTF=y
 CONFIG_PAHOLE_HAS_SPLIT_BTF=y
 CONFIG_DEBUG_INFO_BTF_MODULES=y
@@ -11030,8 +11047,6 @@
 CONFIG_UBSAN_SANITIZE_ALL=y
 # CONFIG_TEST_UBSAN is not set
 CONFIG_HAVE_ARCH_KCSAN=y
-CONFIG_HAVE_KCSAN_COMPILER=y
-# CONFIG_KCSAN is not set
 # end of Generic Kernel Debugging Instruments

 CONFIG_DEBUG_KERNEL=y
root@compute81:~#