Comment 10 for bug 1592547

Getting a null ptr deref in a different place now

[ 17.514600] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[ 17.514745] IP: [<ffffffff8137a956>] aa_dfa_next+0x6/0x70
[ 17.514851] PGD 3bee2067 PUD 3bee3067 PMD 0
[ 17.514950] Oops: 0000 [#1] SMP
[ 17.515046] Modules linked in: snd_hda_codec_generic ppdev snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd input_leds joydev serio_raw soundcore i2c_piix4 parport_pc 8250_fintek parport mac_hid ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 8139too qxl aesni_intel aes_x86_64 lrw gf128mul ttm drm_kms_helper glue_helper ablk_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops psmouse 8139cp mii drm pata_acpi floppy
[ 17.515885] CPU: 0 PID: 1102 Comm: stress-ng-appar Not tainted 4.4.0-24-generic #43
[ 17.516021] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 17.516166] task: ffff8800351f6040 ti: ffff88003bef4000 task.ti: ffff88003bef4000
[ 17.516324] RIP: 0010:[<ffffffff8137a956>] [<ffffffff8137a956>] aa_dfa_next+0x6/0x70
[ 17.516482] RSP: 0018:ffff88003bef7ca8 EFLAGS: 00010282
[ 17.516627] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000004a46
[ 17.516776] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
[ 17.516929] RBP: ffff88003bef7d28 R08: ffff88003fc19f40 R09: ffff88003e001d00
[ 17.517085] R10: ffff88003c233050 R11: 000000000001a6e0 R12: ffff88003bef7d48
[ 17.517242] R13: ffff880037a54000 R14: ffff880037a54094 R15: 0000000000000029
[ 17.517404] FS: 00007f138f3d1700(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
[ 17.517572] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 17.517738] CR2: 0000000000000020 CR3: 000000003bee1000 CR4: 00000000001406f0
[ 17.517916] Stack:
[ 17.518084] ffff88003bef7d28 ffffffff8138363a 0000000000000000 0000000000000000
[ 17.518271] 000000003bef7d00 0000000000000000 ffffc90001355400 0000000000000000
[ 17.518460] ffff88003bef7d40 0000000000000000 00000000bd06c533 ffff88003bef7e28
[ 17.518675] Call Trace:
[ 17.518902] [<ffffffff8138363a>] ? unpack_profile+0x5ca/0x970
[ 17.519119] [<ffffffff81383b89>] aa_unpack+0xe9/0x450
[ 17.519345] [<ffffffff81381f47>] aa_replace_profiles+0x77/0xb70
[ 17.519601] [<ffffffff811cf81b>] ? vmalloc+0x6b/0x70
[ 17.519852] [<ffffffff813771af>] policy_update+0x9f/0x1f0
[ 17.520618] [<ffffffff81377313>] profile_replace+0x13/0x20
[ 17.521767] [<ffffffff8120c5f8>] __vfs_write+0x18/0x40
[ 17.522195] [<ffffffff8120cf89>] vfs_write+0xa9/0x1a0
[ 17.522441] [<ffffffff8120bf1f>] ? do_sys_open+0x1bf/0x2a0
[ 17.522672] [<ffffffff8120dc45>] SyS_write+0x55/0xc0
[ 17.522915] [<ffffffff81825d72>] entry_SYSCALL_64_fastpath+0x16/0x71
[ 17.523162] Code: 0c 42 39 ce 74 d9 0f b6 02 41 0f b7 34 7b 84 c0 75 d9 eb c3 41 0f b7 34 44 eb 89 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 <48> 8b 47 20 4c 8b 5f 28 4c 8b 57 40 48 89 e5 4c 8b 4f 18 48 8d
[ 17.523748] RIP [<ffffffff8137a956>] aa_dfa_next+0x6/0x70
[ 17.524030] RSP <ffff88003bef7ca8>
[ 17.524339] CR2: 0000000000000020
[ 17.524643] ---[ end trace 2073f3bc4e0ed754 ]---