** Description changed: Version Signature Ubuntu 4.4.0-109.132-generic 4.4.98 Attached is source code for sending a scsi command block to a sg device. When this is executed it causes a a seg fault with the stack dump that can been seen in the dmesg logs(see Below). The code worked until 4.4.0-98. It also continues to work on newer versions of ubuntu, such as Ubuntu 17.10 with the most up to date kernel 4.13.0.25. Please let me know if there is anything else information wise I can do help clarify this error. I have been able to replicate this on multiple hardware scenarios so I hope that the attached source code should be enough for you to do the same. [ 107.963701] Call Trace: [ 107.963715] [<ffffffff813fbb03>] dump_stack+0x63/0x90 [ 107.963727] [<ffffffff81081e52>] warn_slowpath_common+0x82/0xc0 [ 107.963729] [<ffffffff81081f9a>] warn_slowpath_null+0x1a/0x20 [ 107.963731] [<ffffffff815dcc9e>] sg_rq_end_io+0x24e/0x340 [ 107.963741] [<ffffffff8152b33e>] ? add_timer_randomness+0xde/0x100 [ 107.963745] [<ffffffff813cc592>] blk_finish_request+0x62/0xf0 [ 107.963748] [<ffffffff815c5d76>] scsi_end_request+0x106/0x1d0 [ 107.963750] [<ffffffff815c93d6>] scsi_io_completion+0x1b6/0x690 [ 107.963752] [<ffffffff815bffff>] scsi_finish_command+0xcf/0x120 [ 107.963754] [<ffffffff815c47c5>] scsi_eh_flush_done_q+0xf5/0x140 [ 107.963760] [<ffffffff815f2bc9>] ata_scsi_port_error_handler+0x599/0x770 [ 107.963763] [<ffffffff815ed5ad>] ? ata_scsi_cmd_error_handler+0x11d/0x150 [ 107.963765] [<ffffffff815f2e40>] ata_scsi_error+0xa0/0xe0 [ 107.963766] [<ffffffff815c4cfb>] scsi_error_handler+0xdb/0x8a0 [ 107.963779] [<ffffffff81840010>] ? __schedule+0x310/0x7b0 [ 107.963781] [<ffffffff815c4c20>] ? scsi_eh_get_sense+0x240/0x240 [ 107.963788] [<ffffffff810a1845>] kthread+0xe5/0x100 [ 107.963790] [<ffffffff810a1760>] ? kthread_create_on_node+0x1e0/0x1e0 [ 107.963792] [<ffffffff81844a0f>] ret_from_fork+0x3f/0x70 [ 107.963794] [<ffffffff810a1760>] ? kthread_create_on_node+0x1e0/0x1e0 [ 107.963795] ---[ end trace b723db66c786bceb ]--- ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-109-generic 4.4.0-109.132 ProcVersionSignature: Ubuntu 4.4.0-109.132-generic 4.4.98 Uname: Linux 4.4.0-109-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: Unity Date: Wed Jan 17 12:34:22 2018 HibernationDevice: RESUME=/dev/mapper/pc17--vg-swap_1 InstallationDate: Installed on 2018-01-17 (0 days ago) InstallationMedia: Ubuntu-Server 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) IwConfig: - lo no wireless extensions. - - ens192 no wireless extensions. + lo no wireless extensions. + + ens192 no wireless extensions. Lsusb: Error: command ['lsusb'] failed with exit code 1: MachineType: VMware, Inc. VMware Virtual Platform ProcFB: 0 svgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-109-generic root=/dev/mapper/hostname--vg-root ro PulseList: - Error: command ['pacmd', 'list'] failed with exit code 1: XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e g happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.) - No PulseAudio daemon running, or not running as session daemon. + Error: command ['pacmd', 'list'] failed with exit code 1: XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e g happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.) + No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: - linux-restricted-modules-4.4.0-109-generic N/A - linux-backports-modules-4.4.0-109-generic N/A - linux-firmware 1.157.14 + linux-restricted-modules-4.4.0-109-generic N/A + linux-backports-modules-4.4.0-109-generic N/A + linux-firmware 1.157.14 RfKill: - + SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/14/2014 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.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd04/14/2014:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A: dmi.product.name: VMware Virtual Platform dmi.product.version: None dmi.sys.vendor: VMware, Inc.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743859 Title: SCSI subsystem Kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743859/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
