This change was made by a bot. ** Changed in: linux (Ubuntu) Status: New => Confirmed
-- 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/1868707 Title: tpci from kernel_misc in ubuntu_ltp failed on B with NULL pointer dereference Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Confirmed Bug description: Issue found on Bionic 4.15.0-92 but it can be reproduce with Bionic 4.15.0-91, so it looks like a test case issue to me. Test output with 4.15.0-91 during the last SRU cycle: startup='Tue Mar 3 20:06:07 2020' test_pci 1 TCONF : tst_module.c:70: Failed to find module 'ltp_tpci.ko' test_pci 2 TCONF : tst_module.c:70: Remaining cases not appropriate for configuration tag=tpci stime=1583265967 dur=0 exit=exited stat=32 core=no cu=0 cs=0 And it looks like the test case has been updated with: https://github.com/linux-test-project/ltp/commit/3dd286bdbee3345de57d9d87fcbed92c5f612515 And the test output now becomes: startup='Wed Mar 18 02:17:52 2020' tag=tpci stime=1584497872 dur=0 exit=signaled stat=9 core=no cu=0 cs=2 If you run this test manually: $ sudo ./tpci Killed $ uname -a Linux larry 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux And kernel trace can be found in dmesg: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: sys_bus_slot+0x62/0x110 [ltp_tpci] PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI Modules linked in: ltp_tpci(OE) kvm_intel kvm irqbypass input_leds joydev serio_raw qemu_fw_cfg mac_hid sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt psmouse fb_sys_fops virtio_blk floppy drm i2c_piix4 virtio_net pata_acpi CPU: 1 PID: 1286 Comm: tpci Tainted: G OE 4.15.0-91-generic #92-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 RIP: 0010:sys_bus_slot+0x62/0x110 [ltp_tpci] RSP: 0018:ffffa05b80ce3e08 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff92487a709a30 RCX: 0000000000000000 RDX: ffffa05b80ce3dd0 RSI: ffffffffc0732044 RDI: 0000000000000000 RBP: ffffa05b80ce3e38 R08: 00000000000000ff R09: ffff92487a709a30 R10: 0000000000000008 R11: f000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: fffffffffffffff2 FS: 00007fc90e732580(0000) GS:ffff92487fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 0000000076b7c000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dev_attr_store+0x1b/0x30 sysfs_kf_write+0x3c/0x50 kernfs_fop_write+0x125/0x1a0 __vfs_write+0x1b/0x40 vfs_write+0xb1/0x1a0 SyS_write+0x5c/0xe0 do_syscall_64+0x73/0x130 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7fc90e234154 RSP: 002b:00007ffe847233f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc90e234154 RDX: 0000000000000001 RSI: 00007ffe84723422 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8472341c R14: 00007ffe84723422 R15: 00007fc90e732500 Code: 27 e1 8b 4d d4 48 8b 3d ad 27 00 00 0f b6 c5 48 85 ff 44 0f b6 e1 41 89 c6 74 10 e8 99 56 dd e0 48 c7 05 8e 27 00 00 00 00 00 00 <48> 8b 04 25 10 00 00 00 44 89 e2 44 89 f6 48 8b 80 d0 00 00 00 RIP: sys_bus_slot+0x62/0x110 [ltp_tpci] RSP: ffffa05b80ce3e08 CR2: 0000000000000010 ---[ end trace b359970625da17ad ]--- ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-91-generic 4.15.0-91.92 ProcVersionSignature: User Name 4.15.0-91.92-generic 4.15.18 Uname: Linux 4.15.0-91-generic x86_64 NonfreeKernelModules: ltp_tpci AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Mar 24 11:02 seq crw-rw---- 1 root audio 116, 33 Mar 24 11:02 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.12 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Tue Mar 24 11:04:01 2020 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: QEMU Standard PC (i440FX + PIIX, 1996) PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash ProcFB: 0 cirrusdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-91-generic root=UUID=29438a95-0e7a-484b-a1fb-527f0e3d2e06 ro console=tty1 console=ttyS0 RelatedPackageVersions: linux-restricted-modules-4.15.0-91-generic N/A linux-backports-modules-4.15.0-91-generic N/A linux-firmware 1.173.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.10.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-bionic dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-bionic dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1868707/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp