Public bug reported: Upgraded ceph cluster running ceph to 24.04.2 from Ubuntu 22. Turning on selinux (permissive), hit a kernel null reference when mounting cephfs and trying to touch a file:
1. Update cluster to 24.04 2. Verify ceph is working as intended (able to mount cephFS, write out a file, unmount, etc.) 3. Installed selinux packages 4. Added following to grub on all 3 cluster members: "audit=1 audit_backlog_limit=8192 panic=10 security=selinux selinux=1 apparmor=0" 5. Selinux policy is permissive: root@ceph0:~# sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: default Current mode: permissive Mode from config file: permissive Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: actual (secure) Max kernel policy version: 33 root@ceph0:~# 6. Mounted ceph fs: mount -t ceph [email protected]=/ /var/lib/libvirt/images -o ms_mode=secure 7. attempted to write a file, did not complete and null reference reported: [ 86.678570] BUG: kernel NULL pointer dereference, address: 000000000000001d [ 86.679238] #PF: supervisor read access in kernel mode [ 86.679859] #PF: error_code(0x0000) - not-present page [ 86.680445] PGD 0 P4D 0 [ 86.681021] Oops: 0000 [#1] PREEMPT SMP PTI [ 86.681558] CPU: 0 PID: 2818 Comm: touch Not tainted 6.8.0-62-generic #65-Ubuntu [ 86.682095] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020 [ 86.682716] RIP: 0010:memcpy_orig+0x54/0x130 [ 86.683267] Code: 89 07 4c 89 4f 08 4c 89 57 10 4c 89 5f 18 48 8d 7f 20 73 d4 83 c2 20 eb 44 48 01 d6 48 01 d7 48 83 ea 20 0f 1f 00 48 83 ea 20 <4c> 8b 46 f8 4c 8b 4e f0 4c 8b 56 e8 4c 8b 5e e0 48 8d 76 e0 4c 89 [ 86.684464] RSP: 0018:ffffa79300b2f7e0 EFLAGS: 00010283 [ 86.685060] RAX: ffff9aeb6123a008 RBX: 0000000000000ff8 RCX: 0000000000000000 [ 86.685659] RDX: ffffffffffffffe5 RSI: 0000000000000025 RDI: ffff9aeb6123a02d [ 86.686265] RBP: ffffa79300b2f810 R08: 0000000000000025 R09: 0000000000000000 [ 86.686843] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000025 [ 86.687366] R13: 0000000000000000 R14: ffff9aeb408d5960 R15: ffffa79300b2f8e4 [ 86.687888] FS: 0000724d07b47740(0000) GS:ffff9aec77c00000(0000) knlGS:0000000000000000 [ 86.688416] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.688947] CR2: 000000000000001d CR3: 000000012038a004 CR4: 00000000001706f0 [ 86.689541] Call Trace: [ 86.690124] <TASK> [ 86.690704] ? show_regs+0x6d/0x80 [ 86.691256] ? __die+0x24/0x80 [ 86.691807] ? page_fault_oops+0x99/0x1b0 [ 86.692426] ? kernelmode_fixup_or_oops.isra.0+0x69/0x90 [ 86.692991] ? __bad_area_nosemaphore+0x19e/0x2c0 [ 86.693563] ? find_vma+0x34/0x60 [ 86.694214] ? bad_area_nosemaphore+0x16/0x30 [ 86.694835] ? do_user_addr_fault+0x29d/0x670 [ 86.695439] ? exc_page_fault+0x83/0x1b0 [ 86.696024] ? asm_exc_page_fault+0x27/0x30 [ 86.696614] ? memcpy_orig+0x54/0x130 [ 86.697202] ? ceph_pagelist_append+0x124/0x150 [libceph] [ 86.697995] ceph_security_init_secctx+0xce/0x1f0 [ceph] [ 86.698733] ceph_new_inode+0x80/0xe0 [ceph] [ 86.699484] ceph_atomic_open+0x3b2/0x9d0 [ceph] [ 86.700239] ? may_create+0x141/0x150 [ 86.700903] lookup_open.isra.0+0x3a9/0x570 [ 86.701534] open_last_lookups+0x14f/0x400 [ 86.702196] path_openat+0x99/0x2d0 [ 86.702815] do_filp_open+0xaf/0x170 [ 86.703475] do_sys_openat2+0xb3/0xe0 [ 86.704098] __x64_sys_openat+0x55/0xa0 [ 86.704804] x64_sys_call+0x1eb1/0x25a0 [ 86.705437] do_syscall_64+0x7f/0x180 [ 86.706120] ? filemap_map_pages+0x2fe/0x4c0 [ 86.706792] ? __lruvec_stat_mod_folio+0x70/0xc0 [ 86.707444] ? do_read_fault+0x112/0x200 [ 86.708157] ? do_fault+0xf0/0x260 [ 86.708850] ? handle_pte_fault+0x114/0x1d0 [ 86.709519] ? __handle_mm_fault+0x654/0x800 [ 86.710216] ? __count_memcg_events+0x6b/0x120 [ 86.710884] ? count_memcg_events.constprop.0+0x2a/0x50 [ 86.711505] ? handle_mm_fault+0xad/0x380 [ 86.712136] ? do_user_addr_fault+0x334/0x670 [ 86.712778] ? irqentry_exit_to_user_mode+0x7b/0x260 [ 86.713433] ? irqentry_exit+0x43/0x50 [ 86.714111] ? clear_bhb_loop+0x15/0x70 [ 86.714777] ? clear_bhb_loop+0x15/0x70 [ 86.715330] ? clear_bhb_loop+0x15/0x70 [ 86.715844] entry_SYSCALL_64_after_hwframe+0x78/0x80 [ 86.716378] RIP: 0033:0x724d0791b175 [ 86.716895] Code: 83 e2 40 75 50 89 f0 f7 d0 a9 00 00 41 00 74 45 80 3d de fe 0e 00 00 74 60 89 da 4c 89 e6 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 7f 00 00 00 48 8b 55 b8 64 48 2b 14 25 28 [ 86.718058] RSP: 002b:00007ffd9c151d40 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 [ 86.718648] RAX: ffffffffffffffda RBX: 0000000000000941 RCX: 0000724d0791b175 [ 86.719225] RDX: 0000000000000941 RSI: 00007ffd9c153635 RDI: 00000000ffffff9c [ 86.719833] RBP: 00007ffd9c151db0 R08: 0000000000000000 R09: 0000000000000000 [ 86.720414] R10: 00000000000001b6 R11: 0000000000000202 R12: 00007ffd9c153635 [ 86.720982] R13: 0000724d07a03248 R14: 0000000000000000 R15: 0000000000000001 [ 86.721596] </TASK> ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-62-generic 6.8.0-62.65 ProcVersionSignature: Ubuntu 6.8.0-62.65-generic 6.8.12 Uname: Linux 6.8.0-62-generic x86_64 AlsaDevices: total 0 crw-rw----. 1 root audio 116, 1 Jun 26 19:53 seq crw-rw----. 1 root audio 116, 33 Jun 26 19:53 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.28.1-0ubuntu3.7 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: CRDA: N/A CasperMD5CheckResult: pass CloudArchitecture: x86_64 CloudID: none CloudName: none CloudPlatform: none CloudSubPlatform: config Date: Thu Jun 26 20:01:43 2025 InstallationDate: Installed on 2024-03-19 (464 days ago) InstallationMedia: Ubuntu-Server 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240216.1) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Error: command ['lsusb'] failed with exit code 1: Lsusb-t: Lsusb-v: Error: command ['lsusb', '-v'] failed with exit code 1: MachineType: VMware, Inc. VMware Virtual Platform PciMultimedia: ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 vmwgfxdrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-62-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro ipv6.disable=1 ipv6.disable=1 audit=1 audit_backlog_limit=8192 panic=10 security=selinux selinux=1 apparmor=0 RelatedPackageVersions: linux-restricted-modules-6.8.0-62-generic N/A linux-backports-modules-6.8.0-62-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.13 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to noble on 2025-06-26 (0 days ago) dmi.bios.date: 11/12/2020 dmi.bios.release: 4.6 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: 6.00 dmi.board.name: 440BX Desktop Reference Platform dmi.board.vendor: Intel Corporation dmi.board.version: None dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.ec.firmware.release: 0.0 dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd11/12/2020:br4.6:efr0.0:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:sku: dmi.product.name: VMware Virtual Platform dmi.product.version: None dmi.sys.vendor: VMware, Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug noble -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2115447 Title: Ubuntu 24.04.2: NULL pointer dereference with Ceph and selinux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2115447/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
