Comment 5 for bug 2024599

On 6.2.0-21-generic I also get:

sudo ./stress-ng --apparmor 1 --klog-check

stress-ng: error: [1083] klog-check: alert: [66.442338] 'BUG: kernel NULL pointer dereference, address: 0000000000000030'
stress-ng: error: [1083] klog-check: alert: [66.442538] '#PF: supervisor read access in kernel mode'
stress-ng: error: [1083] klog-check: alert: [66.442718] '#PF: error_code(0x0000) - not-present page'
stress-ng: info: [1083] klog-check: warning: [66.443080] 'Oops: 0000 [#1] PREEMPT SMP PTI'
stress-ng: info: [1083] klog-check: warning: [66.443256] 'CPU: 3 PID: 1088 Comm: stress-ng-appar Not tainted 6.2.0-21-generic #21-Ubuntu'
stress-ng: info: [1083] klog-check: warning: [66.443438] 'Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-debian-1.16.0-5 04/01/2014'
stress-ng: info: [1083] klog-check: warning: [66.443628] 'RIP: 0010:aafs_create.constprop.0+0x7f/0x130'
stress-ng: info: [1083] klog-check: warning: [66.443819] 'Code: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc <4d> 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 8a 59 a1'
stress-ng: info: [1083] klog-check: warning: [66.444227] 'RSP: 0018:ffffbeb940907bd8 EFLAGS: 00010246'
stress-ng: info: [1083] klog-check: warning: [66.444433] 'RAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.444646] 'RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.444862] 'RBP: ffffbeb940907c18 R08: 0000000000000000 R09: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.445074] 'R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff93db8b18'
stress-ng: info: [1083] klog-check: warning: [66.445291] 'R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.445503] 'FS: 00007f60f5c07740(0000) GS:ffff9578bbcc0000(0000) knlGS:0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.445721] 'CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033'
stress-ng: info: [1083] klog-check: warning: [66.445939] 'CR2: 0000000000000030 CR3: 0000000124ffa004 CR4: 0000000000370ee0'
stress-ng: info: [1083] klog-check: warning: [66.446163] 'DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.446387] 'DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400'
stress-ng: info: [1083] klog-check: warning: [66.446608] 'Call Trace:'
stress-ng: info: [1083] klog-check: warning: [66.446829] ' <TASK>'
stress-ng: info: [1083] klog-check: warning: [66.447059] ' __aafs_profile_mkdir+0x3d6/0x480'
stress-ng: info: [1083] klog-check: warning: [66.447290] ' aa_replace_profiles+0x862/0x1270'
stress-ng: info: [1083] klog-check: warning: [66.447518] ' policy_update+0xe0/0x180'
stress-ng: info: [1083] klog-check: warning: [66.447750] ' profile_replace+0xb9/0x150'
stress-ng: info: [1083] klog-check: warning: [66.447981] ' vfs_write+0xc8/0x410'
stress-ng: info: [1083] klog-check: warning: [66.448213] ' ? kmem_cache_free+0x1e/0x3b0'
stress-ng: info: [1083] klog-check: warning: [66.448442] ' ksys_write+0x73/0x100'
stress-ng: info: [1083] klog-check: warning: [66.448670] ' __x64_sys_write+0x19/0x30'
stress-ng: info: [1083] klog-check: warning: [66.448892] ' do_syscall_64+0x58/0x90'
stress-ng: info: [1083] klog-check: warning: [66.449115] ' ? do_syscall_64+0x67/0x90'
stress-ng: info: [1083] klog-check: warning: [66.449337] ' ? do_syscall_64+0x67/0x90'
stress-ng: info: [1083] klog-check: warning: [66.449551] ' ? exit_to_user_mode_loop+0xe0/0x130'
stress-ng: info: [1083] klog-check: warning: [66.449775] ' ? exit_to_user_mode_prepare+0x30/0xb0'
stress-ng: info: [1083] klog-check: warning: [66.449996] ' ? syscall_exit_to_user_mode+0x29/0x50'
stress-ng: info: [1083] klog-check: warning: [66.450220] ' ? do_syscall_64+0x67/0x90'
stress-ng: info: [1083] klog-check: warning: [66.450449] ' ? exit_to_user_mode_prepare+0x30/0xb0'
stress-ng: info: [1083] klog-check: warning: [66.450681] ' ? syscall_exit_to_user_mode+0x29/0x50'
stress-ng: info: [1083] klog-check: warning: [66.450915] ' ? do_syscall_64+0x67/0x90'
stress-ng: info: [1083] klog-check: warning: [66.451151] ' ? do_syscall_64+0x67/0x90'
stress-ng: info: [1083] klog-check: warning: [66.451384] ' entry_SYSCALL_64_after_hwframe+0x72/0xdc'
stress-ng: info: [1083] klog-check: warning: [66.451614] 'RIP: 0033:0x7f60f5b0b9e4'
stress-ng: info: [1083] klog-check: warning: [66.451848] 'Code: 15 39 a4 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 80 3d fd 2b 0f 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 48 83 ec 28 48 89 54 24 18 48'
stress-ng: info: [1083] klog-check: warning: [66.452341] 'RSP: 002b:00007ffdaa28bfb8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001'
stress-ng: info: [1083] klog-check: warning: [66.452601] 'RAX: ffffffffffffffda RBX: 000055fd4274c2b0 RCX: 00007f60f5b0b9e4'
stress-ng: info: [1083] klog-check: warning: [66.452854] 'RDX: 0000000000015b3a RSI: 000055fd4274e780 RDI: 0000000000000005'
stress-ng: info: [1083] klog-check: warning: [66.453111] 'RBP: 0000000000015b3a R08: 000055fd4274c870 R09: 00000000ffffffff'
stress-ng: info: [1083] klog-check: warning: [66.453364] 'R10: 0000000000000000 R11: 0000000000000202 R12: 000055fd4274e780'
stress-ng: info: [1083] klog-check: warning: [66.453617] 'R13: 0000000000000005 R14: 000055fd4274e780 R15: 0000000000000008'
stress-ng: info: [1083] klog-check: warning: [66.453875] ' </TASK>'
stress-ng: info: [1083] klog-check: warning: [66.454125] 'Modules linked in: cfg80211 binfmt_misc intel_rapl_msr snd_hda_codec_generic intel_rapl_common ledtrig_audio snd_hda_intel kvm_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep kvm snd_pcm snd_timer irqbypass rapl snd soundcore joydev input_leds mac_hid serio_raw dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efi_pstore dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 btrfs blake2b_generic 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 hid_generic polyval_clmulni polyval_generic ghash_clmulni_intel usbhid sha512_ssse3 hid qxl drm_ttm_helper ttm aesni_intel drm_kms_helper crypto_simd cryptd syscopyarea virtio_rng sysfillrect sysimgblt virtio_net psmouse drm net_failover i2c_i801 ahci i2c_smbus lpc_ich libahci virtio_blk failover'
stress-ng: info: [1083] klog-check: warning: [66.456245] 'CR2: 0000000000000030'
stress-ng: info: [1083] klog-check: warning: [66.456508] '---[ end trace 0000000000000000 ]---'
stress-ng: info: [1083] klog-check: warning: [66.456772] 'RIP: 0010:aafs_create.constprop.0+0x7f/0x130'
stress-ng: info: [1083] klog-check: warning: [66.457034] 'Code: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc <4d> 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 8a 59 a1'
stress-ng: info: [1083] klog-check: warning: [66.457581] 'RSP: 0018:ffffbeb940907bd8 EFLAGS: 00010246'
stress-ng: info: [1083] klog-check: warning: [66.457856] 'RAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.458185] 'RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.458460] 'RBP: ffffbeb940907c18 R08: 0000000000000000 R09: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.458740] 'R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff93db8b18'
stress-ng: info: [1083] klog-check: warning: [66.459056] 'R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.459340] 'FS: 00007f60f5c07740(0000) GS:ffff9578bbcc0000(0000) knlGS:0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.459630] 'CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033'
stress-ng: info: [1083] klog-check: warning: [66.459918] 'CR2: 0000000000000030 CR3: 0000000124ffa004 CR4: 0000000000370ee0'
stress-ng: info: [1083] klog-check: warning: [66.460212] 'DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000'
stress-ng: info: [1083] klog-check: warning: [66.460502] 'DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400'