Got the following when upgrading from 13.2 to Leap 42.1 Build 207:
( 680/2103) Installing: apparmor-abstractions-2.10-2.3 [........[ 214.757016]
AppArmor: policy_destroy: internal error, policy
'/usr/lib/apache2/mpm-prefork/apache2' still contains profiles
[ 214.758518] ------------[ cut here ]------------
[ 214.759167] kernel BUG at ../security/apparmor/policy.c:160!
[ 214.759499] invalid opcode: 0000 [#1] PREEMPT SMP
[ 214.759499] Modules linked in: nls_utf8 isofs udf crc_itu_t xt_pkttype
xt_LOG xt_limit iscsi_ibft iscsi_boot_sysfs af_packet ip6t_REJECT xt_tcpudp
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_raw ipt_REJECT iptable_raw xt_CT
iptable_filter ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast
nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack
ip6table_filter ip6_tables x_tables ppdev snd_intel8x0 snd_ac97_codec xfs
snd_pcm libcrc32c joydev parport_pc parport snd_timer processor snd serio_raw
soundcore button ac97_bus i2c_piix4 pcspkr dm_mod sr_mod cdrom ata_generic
btrfs xor raid6_pq virtio_net virtio_blk ata_piix virtio_pci virtio_ring virtio
cirrus syscopyarea sysfillrect sysimgblt drm_kms_helper ttm drm floppy sg
[ 214.759499] CPU: 0 PID: 10 Comm: rcuop/0 Not tainted 3.16.7-24-desktop #1
[ 214.759499] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.8.1-0-g4adadbd-20151002_115831-build21 04/01/2014
[ 214.759499] task: ffff88003dabc250 ti: ffff88003dac0000 task.ti:
ffff88003dac0000
[ 214.759499] RIP: 0010:[<ffffffff812d31b9>] [<ffffffff812d31b9>]
policy_destroy+0x69/0xa0
[ 214.759499] RSP: 0000:ffff88003dac3e18 EFLAGS: 00010286
[ 214.759499] RAX: 000000000000006f RBX: ffff88000dd96000 RCX:
0000000000000000
[ 214.759499] RDX: ffff88003fc0e5e0 RSI: ffff88003fc0ca38 RDI:
0000000000000246
[ 214.759499] RBP: 000000000000000d R08: 0000000000000000 R09:
ffff88003d591cf0
[ 214.759499] R10: 00000000000001f5 R11: 00000000ad55ad55 R12:
ffff88003fc0ca60
[ 214.759499] R13: ffff88003bd1de00 R14: 0000000000000000 R15:
ffff880036d08000
[ 214.759499] FS: 0000000000000000(0000) GS:ffff88003fc00000(0000)
knlGS:0000000000000000
[ 214.759499] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 214.759499] CR2: 0000000002487360 CR3: 000000000d19e000 CR4:
00000000000006f0
[ 214.759499] Stack:
[ 214.759499] ffff88000dd96000 ffffffff812d3a77 ffff88000dd96038
ffffffff810c0750
[ 214.759499] 000000013fc127b8 ffff88003fc0cbd0 ffff88003fc0cba8
ffff88003fc0cbb8
[ 214.759499] ffff88003fc0cbc0 ffff88003dac3e98 ffff88003dabc250
ffff88003dabc250
[ 214.759499] Call Trace:
[ 214.759499] [<ffffffff812d3a77>] aa_free_profile+0x27/0x180
[ 214.759499] [<ffffffff810c0750>] rcu_nocb_kthread+0x1f0/0x320
[ 214.759499] [<ffffffff8107dd7d>] kthread+0xbd/0xe0
[ 214.759499] [<ffffffff81623498>] ret_from_fork+0x58/0x90
[ 214.759499] Code: 8b 7b 08 5b e9 39 29 e9 ff 48 c7 c7 f5 ac 84 81 e8 0d 0c
de ff 85 c0 75 14 0f 0b 48 c7 c7 f5 ac 84 81 e8 fb 0b de ff 85 c0 75 1c <0f> 0b
48 8b 13 48 c7 c6 f5 ac 84 81 48 c7 c7 40 df a4 81 31 c0
[ 214.759499] RIP [<ffffffff812d31b9>] policy_destroy+0x69/0xa0
[ 214.759499] RSP <ffff88003dac3e18>
[ 214.793593] ---[ end trace 83742453ac5e74fc ]---
[ 214.794373] Kernel panic - not syncing: Fatal exception in interrupt
[ 214.795369] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range:
0xffffffff80000000-0xffffffff9fffffff)
[ 214.795369] drm_kms_helper: panic occurred, switching back to text console
[ 214.795369] Rebooting in 90 seconds..[ 0.015000] Failed to access perfctr
msr (MSR c1 is 0)
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