Public bug reported: I've used aa-logprof to find more things out to be added to my custom apache2 apparmor file. Since PHP created tons of files in /tmp in the form of /tmp/php* I've decided to add this:
/tmp/php* rw, I'm not sure if it caused the problem, but after this /etc/init.d/apparmor reload froze and there was the following in the output of dmesg command: [13838.909880] audit: type=1400 audit(1471631019.426:1488): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/apache2" pid=23590 comm="apparmor_parser" [13838.920067] ------------[ cut here ]------------ [13838.920079] WARNING: CPU: 0 PID: 23590 at /build/linux-5vkMGy/linux-4.4.0/security/apparmor/label.c:142 profile_cmp+0xed/0x180() [13838.920083] AppArmor WARN profile_cmp: ((!b)): [13838.920085] Modules linked in: [13838.920088] binfmt_misc nf_conntrack_ftp nf_conntrack_irc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_REJECT nf_reject_ipv4 xt_NFLOG nfnetlink_log nfnetlink xt_tcpudp xt_pkttype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables x_tables gpio_ich ipmi_devintf coretemp ipmi_ssif kvm dcdbas irqbypass i5000_edac serio_raw edac_core lpc_ich joydev input_leds i5k_amb ipmi_si 8250_fintek ipmi_msghandler shpchp 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 ses enclosure amdkfd amd_iommu_v2 radeon i2c_algo_bit ttm drm_kms_helper [13838.920166] syscopyarea sysfillrect sysimgblt hid_generic fb_sys_fops usbhid uas e1000e ptp hid usb_storage psmouse drm megaraid_sas bnx2 pps_core pata_acpi fjes [13838.920188] CPU: 0 PID: 23590 Comm: apparmor_parser Not tainted 4.4.0-34-generic #53-Ubuntu [13838.920192] Hardware name: Dell Inc. PowerEdge 1950/0DT097, BIOS 2.7.0 10/30/2010 [13838.920195] 0000000000000086 0000000088f44738 ffff880128bffc00 ffffffff813f11b3 [13838.920199] ffff880128bffc48 ffffffff81cf08e8 ffff880128bffc38 ffffffff81081102 [13838.920204] ffff8800c8d7d400 0000000000000000 000000000000000a 0000000000000000 [13838.920208] Call Trace: [13838.920218] [<ffffffff813f11b3>] dump_stack+0x63/0x90 [13838.920224] [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0 [13838.920228] [<ffffffff8108119c>] warn_slowpath_fmt+0x5c/0x80 [13838.920232] [<ffffffff813ffc40>] ? u32_swap+0x10/0x10 [13838.920236] [<ffffffff8139072d>] profile_cmp+0xed/0x180 [13838.920239] [<ffffffff81391843>] aa_vec_unique+0x163/0x240 [13838.920244] [<ffffffff81395ab7>] __aa_labelset_update_subtree+0x687/0x820 [13838.920249] [<ffffffff811b332d>] ? kzfree+0x2d/0x40 [13838.920254] [<ffffffff8138897b>] aa_replace_profiles+0x59b/0xb70 [13838.920259] [<ffffffff811ecf4e>] ? __kmalloc+0x22e/0x250 [13838.920263] [<ffffffff8137d69f>] policy_update+0x9f/0x1f0 [13838.920267] [<ffffffff8137d803>] profile_replace+0x13/0x20 [13838.920272] [<ffffffff8120c9d8>] __vfs_write+0x18/0x40 [13838.920275] [<ffffffff8120d369>] vfs_write+0xa9/0x1a0 [13838.920279] [<ffffffff8120c2ff>] ? do_sys_open+0x1bf/0x2a0 [13838.920282] [<ffffffff8120e025>] SyS_write+0x55/0xc0 [13838.920288] [<ffffffff8182def2>] entry_SYSCALL_64_fastpath+0x16/0x71 [13838.920291] ---[ end trace a19473a0fd8d9556 ]--- [13838.920305] BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 [13838.920475] IP: [<ffffffff8139066f>] profile_cmp+0x2f/0x180 [13838.920582] PGD 128a7d067 PUD 12a6be067 PMD 0 [13838.920684] Oops: 0000 [#1] SMP [13838.920755] Modules linked in: binfmt_misc nf_conntrack_ftp nf_conntrack_irc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_REJECT nf_reject_ipv4 xt_NFLOG nfnetlink_log nfnetlink xt_tcpudp xt_pkttype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables x_tables gpio_ich ipmi_devintf coretemp ipmi_ssif kvm dcdbas irqbypass i5000_edac serio_raw edac_core lpc_ich joydev input_leds i5k_amb ipmi_si 8250_fintek ipmi_msghandler shpchp 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 ses enclosure amdkfd amd_iommu_v2 radeon i2c_algo_bit [13838.922791] ttm drm_kms_helper syscopyarea sysfillrect sysimgblt hid_generic fb_sys_fops usbhid uas e1000e ptp hid usb_storage psmouse drm megaraid_sas bnx2 pps_core pata_acpi fjes [13838.923223] CPU: 0 PID: 23590 Comm: apparmor_parser Tainted: G W 4.4.0-34-generic #53-Ubuntu [13838.923369] Hardware name: Dell Inc. PowerEdge 1950/0DT097, BIOS 2.7.0 10/30/2010 [13838.923485] task: ffff880035b86400 ti: ffff880128bfc000 task.ti: ffff880128bfc000 [13838.923599] RIP: 0010:[<ffffffff8139066f>] [<ffffffff8139066f>] profile_cmp+0x2f/0x180 [13838.923734] RSP: 0018:ffff880128bffcb0 EFLAGS: 00010086 [13838.923816] RAX: 0000000000000000 RBX: ffff8800c8d7d400 RCX: 0000000000000006 [13838.923916] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 [13838.924017] RBP: ffff880128bffcc0 R08: 000000000000000a R09: 0000000000000562 [13838.924025] R10: ffff8801289ba410 R11: 0000000000000562 R12: 0000000000000000 [13838.924025] R13: 000000000000000a R14: 0000000000000000 R15: ffff880034fdcf50 [13838.924025] FS: 00007f0e5cb28740(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000 [13838.924025] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [13838.924025] CR2: 0000000000000038 CR3: 0000000129458000 CR4: 00000000000006f0 [13838.924025] Stack: [13838.924025] 000000000000000b ffff880034fdcfa8 ffff880128bffd08 ffffffff81391843 [13838.924025] 0000000134db7fb0 ffff88010000000b ffff880034fdcf50 ffff8800c8d7d760 [13838.924025] ffff8801289ba3c8 ffff880034fdcf00 ffff8801289ba3c0 ffff880128bffd98 [13838.924025] Call Trace: [13838.924025] [<ffffffff81391843>] aa_vec_unique+0x163/0x240 [13838.924025] [<ffffffff81395ab7>] __aa_labelset_update_subtree+0x687/0x820 [13838.924025] [<ffffffff811b332d>] ? kzfree+0x2d/0x40 [13838.924025] [<ffffffff8138897b>] aa_replace_profiles+0x59b/0xb70 [13838.924025] [<ffffffff811ecf4e>] ? __kmalloc+0x22e/0x250 [13838.924025] [<ffffffff8137d69f>] policy_update+0x9f/0x1f0 [13838.924025] [<ffffffff8137d803>] profile_replace+0x13/0x20 [13838.924025] [<ffffffff8120c9d8>] __vfs_write+0x18/0x40 [13838.924025] [<ffffffff8120d369>] vfs_write+0xa9/0x1a0 [13838.924025] [<ffffffff8120c2ff>] ? do_sys_open+0x1bf/0x2a0 [13838.924025] [<ffffffff8120e025>] SyS_write+0x55/0xc0 [13838.924025] [<ffffffff8182def2>] entry_SYSCALL_64_fastpath+0x16/0x71 [13838.924025] Code: 90 55 48 85 ff 48 89 e5 41 54 53 49 89 f4 48 89 fb 0f 84 8b 00 00 00 4d 85 e4 0f 84 aa 00 00 00 48 83 7b 38 00 0f 84 c9 00 00 00 <49> 83 7c 24 38 00 0f 84 e8 00 00 00 48 83 7b 08 00 0f 84 07 01 [13838.924025] RIP [<ffffffff8139066f>] profile_cmp+0x2f/0x180 [13838.924025] RSP <ffff880128bffcb0> [13838.924025] CR2: 0000000000000038 [13838.924025] ---[ end trace a19473a0fd8d9557 ]--- ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-34-generic 4.4.0-34.53 ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15 Uname: Linux 4.4.0-34-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Aug 19 16:33 seq crw-rw---- 1 root audio 116, 33 Aug 19 16:33 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Fri Aug 19 20:32:38 2016 HibernationDevice: RESUME=UUID=5fd6de9a-b76c-49f1-b051-ebb1d40d4436 InstallationDate: Installed on 2016-08-17 (2 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: Dell Inc. PowerEdge 1950 PciMultimedia: ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic root=UUID=165f1d9c-dc78-412c-86a3-b96a8a94a97a ro RelatedPackageVersions: linux-restricted-modules-4.4.0-34-generic N/A linux-backports-modules-4.4.0-34-generic N/A linux-firmware 1.157.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/30/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.7.0 dmi.board.name: 0DT097 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.7.0:bd10/30/2010:svnDellInc.:pnPowerEdge1950:pvr:rvnDellInc.:rn0DT097:rvrA00:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge 1950 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1615082 Title: kernel NULL pointer dereference on apparmor profile update Status in linux package in Ubuntu: New Bug description: I've used aa-logprof to find more things out to be added to my custom apache2 apparmor file. Since PHP created tons of files in /tmp in the form of /tmp/php* I've decided to add this: /tmp/php* rw, I'm not sure if it caused the problem, but after this /etc/init.d/apparmor reload froze and there was the following in the output of dmesg command: [13838.909880] audit: type=1400 audit(1471631019.426:1488): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/apache2" pid=23590 comm="apparmor_parser" [13838.920067] ------------[ cut here ]------------ [13838.920079] WARNING: CPU: 0 PID: 23590 at /build/linux-5vkMGy/linux-4.4.0/security/apparmor/label.c:142 profile_cmp+0xed/0x180() [13838.920083] AppArmor WARN profile_cmp: ((!b)): [13838.920085] Modules linked in: [13838.920088] binfmt_misc nf_conntrack_ftp nf_conntrack_irc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_REJECT nf_reject_ipv4 xt_NFLOG nfnetlink_log nfnetlink xt_tcpudp xt_pkttype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables x_tables gpio_ich ipmi_devintf coretemp ipmi_ssif kvm dcdbas irqbypass i5000_edac serio_raw edac_core lpc_ich joydev input_leds i5k_amb ipmi_si 8250_fintek ipmi_msghandler shpchp 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 ses enclosure amdkfd amd_iommu_v2 radeon i2c_algo_bit ttm drm_kms_helper [13838.920166] syscopyarea sysfillrect sysimgblt hid_generic fb_sys_fops usbhid uas e1000e ptp hid usb_storage psmouse drm megaraid_sas bnx2 pps_core pata_acpi fjes [13838.920188] CPU: 0 PID: 23590 Comm: apparmor_parser Not tainted 4.4.0-34-generic #53-Ubuntu [13838.920192] Hardware name: Dell Inc. PowerEdge 1950/0DT097, BIOS 2.7.0 10/30/2010 [13838.920195] 0000000000000086 0000000088f44738 ffff880128bffc00 ffffffff813f11b3 [13838.920199] ffff880128bffc48 ffffffff81cf08e8 ffff880128bffc38 ffffffff81081102 [13838.920204] ffff8800c8d7d400 0000000000000000 000000000000000a 0000000000000000 [13838.920208] Call Trace: [13838.920218] [<ffffffff813f11b3>] dump_stack+0x63/0x90 [13838.920224] [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0 [13838.920228] [<ffffffff8108119c>] warn_slowpath_fmt+0x5c/0x80 [13838.920232] [<ffffffff813ffc40>] ? u32_swap+0x10/0x10 [13838.920236] [<ffffffff8139072d>] profile_cmp+0xed/0x180 [13838.920239] [<ffffffff81391843>] aa_vec_unique+0x163/0x240 [13838.920244] [<ffffffff81395ab7>] __aa_labelset_update_subtree+0x687/0x820 [13838.920249] [<ffffffff811b332d>] ? kzfree+0x2d/0x40 [13838.920254] [<ffffffff8138897b>] aa_replace_profiles+0x59b/0xb70 [13838.920259] [<ffffffff811ecf4e>] ? __kmalloc+0x22e/0x250 [13838.920263] [<ffffffff8137d69f>] policy_update+0x9f/0x1f0 [13838.920267] [<ffffffff8137d803>] profile_replace+0x13/0x20 [13838.920272] [<ffffffff8120c9d8>] __vfs_write+0x18/0x40 [13838.920275] [<ffffffff8120d369>] vfs_write+0xa9/0x1a0 [13838.920279] [<ffffffff8120c2ff>] ? do_sys_open+0x1bf/0x2a0 [13838.920282] [<ffffffff8120e025>] SyS_write+0x55/0xc0 [13838.920288] [<ffffffff8182def2>] entry_SYSCALL_64_fastpath+0x16/0x71 [13838.920291] ---[ end trace a19473a0fd8d9556 ]--- [13838.920305] BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 [13838.920475] IP: [<ffffffff8139066f>] profile_cmp+0x2f/0x180 [13838.920582] PGD 128a7d067 PUD 12a6be067 PMD 0 [13838.920684] Oops: 0000 [#1] SMP [13838.920755] Modules linked in: binfmt_misc nf_conntrack_ftp nf_conntrack_irc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_REJECT nf_reject_ipv4 xt_NFLOG nfnetlink_log nfnetlink xt_tcpudp xt_pkttype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables x_tables gpio_ich ipmi_devintf coretemp ipmi_ssif kvm dcdbas irqbypass i5000_edac serio_raw edac_core lpc_ich joydev input_leds i5k_amb ipmi_si 8250_fintek ipmi_msghandler shpchp 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 ses enclosure amdkfd amd_iommu_v2 radeon i2c_algo_bit [13838.922791] ttm drm_kms_helper syscopyarea sysfillrect sysimgblt hid_generic fb_sys_fops usbhid uas e1000e ptp hid usb_storage psmouse drm megaraid_sas bnx2 pps_core pata_acpi fjes [13838.923223] CPU: 0 PID: 23590 Comm: apparmor_parser Tainted: G W 4.4.0-34-generic #53-Ubuntu [13838.923369] Hardware name: Dell Inc. PowerEdge 1950/0DT097, BIOS 2.7.0 10/30/2010 [13838.923485] task: ffff880035b86400 ti: ffff880128bfc000 task.ti: ffff880128bfc000 [13838.923599] RIP: 0010:[<ffffffff8139066f>] [<ffffffff8139066f>] profile_cmp+0x2f/0x180 [13838.923734] RSP: 0018:ffff880128bffcb0 EFLAGS: 00010086 [13838.923816] RAX: 0000000000000000 RBX: ffff8800c8d7d400 RCX: 0000000000000006 [13838.923916] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 [13838.924017] RBP: ffff880128bffcc0 R08: 000000000000000a R09: 0000000000000562 [13838.924025] R10: ffff8801289ba410 R11: 0000000000000562 R12: 0000000000000000 [13838.924025] R13: 000000000000000a R14: 0000000000000000 R15: ffff880034fdcf50 [13838.924025] FS: 00007f0e5cb28740(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000 [13838.924025] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [13838.924025] CR2: 0000000000000038 CR3: 0000000129458000 CR4: 00000000000006f0 [13838.924025] Stack: [13838.924025] 000000000000000b ffff880034fdcfa8 ffff880128bffd08 ffffffff81391843 [13838.924025] 0000000134db7fb0 ffff88010000000b ffff880034fdcf50 ffff8800c8d7d760 [13838.924025] ffff8801289ba3c8 ffff880034fdcf00 ffff8801289ba3c0 ffff880128bffd98 [13838.924025] Call Trace: [13838.924025] [<ffffffff81391843>] aa_vec_unique+0x163/0x240 [13838.924025] [<ffffffff81395ab7>] __aa_labelset_update_subtree+0x687/0x820 [13838.924025] [<ffffffff811b332d>] ? kzfree+0x2d/0x40 [13838.924025] [<ffffffff8138897b>] aa_replace_profiles+0x59b/0xb70 [13838.924025] [<ffffffff811ecf4e>] ? __kmalloc+0x22e/0x250 [13838.924025] [<ffffffff8137d69f>] policy_update+0x9f/0x1f0 [13838.924025] [<ffffffff8137d803>] profile_replace+0x13/0x20 [13838.924025] [<ffffffff8120c9d8>] __vfs_write+0x18/0x40 [13838.924025] [<ffffffff8120d369>] vfs_write+0xa9/0x1a0 [13838.924025] [<ffffffff8120c2ff>] ? do_sys_open+0x1bf/0x2a0 [13838.924025] [<ffffffff8120e025>] SyS_write+0x55/0xc0 [13838.924025] [<ffffffff8182def2>] entry_SYSCALL_64_fastpath+0x16/0x71 [13838.924025] Code: 90 55 48 85 ff 48 89 e5 41 54 53 49 89 f4 48 89 fb 0f 84 8b 00 00 00 4d 85 e4 0f 84 aa 00 00 00 48 83 7b 38 00 0f 84 c9 00 00 00 <49> 83 7c 24 38 00 0f 84 e8 00 00 00 48 83 7b 08 00 0f 84 07 01 [13838.924025] RIP [<ffffffff8139066f>] profile_cmp+0x2f/0x180 [13838.924025] RSP <ffff880128bffcb0> [13838.924025] CR2: 0000000000000038 [13838.924025] ---[ end trace a19473a0fd8d9557 ]--- ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-34-generic 4.4.0-34.53 ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15 Uname: Linux 4.4.0-34-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Aug 19 16:33 seq crw-rw---- 1 root audio 116, 33 Aug 19 16:33 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Fri Aug 19 20:32:38 2016 HibernationDevice: RESUME=UUID=5fd6de9a-b76c-49f1-b051-ebb1d40d4436 InstallationDate: Installed on 2016-08-17 (2 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: Dell Inc. PowerEdge 1950 PciMultimedia: ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic root=UUID=165f1d9c-dc78-412c-86a3-b96a8a94a97a ro RelatedPackageVersions: linux-restricted-modules-4.4.0-34-generic N/A linux-backports-modules-4.4.0-34-generic N/A linux-firmware 1.157.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/30/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.7.0 dmi.board.name: 0DT097 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.7.0:bd10/30/2010:svnDellInc.:pnPowerEdge1950:pvr:rvnDellInc.:rn0DT097:rvrA00:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge 1950 dmi.sys.vendor: Dell Inc. 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