I wrote: > Christoph Hellwig wrote: > > On Thu, Dec 31, 2015 at 06:04:15PM +0100, Sebastian Herbszt wrote: > > > I still get this on 4.4.0-rc7-1.g276c9f4-default. Since this did not > > > happen on 4.3 I checked the scsi changes and found the following commit: > > > > > > scsi: restart list search after unlock in scsi_remove_target > > > > > > Christoph, can it cause this issue? > > > > Apparently yes. Bad hard a patch to avoid this when he resubmitted > > my patch, which for some reason didn't get apply. Can you grab it > > from the list archives and give it a try? > > Do you mean the following patch? > > "[PATCH v2] Separate target visibility from reaped state information" [1] > > I can give it a try but it will likely take a few days. > > [1] http://marc.info/?l=linux-scsi&m=144771953020415&w=2 Bart's patch mentioned above seems to fix my issue. The soft lockup is gone and now I am getting the following but that already happened on 4.3 too: [ 531.269588] ------------[ cut here ]------------ [ 531.269609] WARNING: CPU: 0 PID: 3482 at fs/sysfs/group.c:237 sysfs_remove_group+0x8f/0xa0() [ 531.269616] sysfs group c0ad62c8 not found for kobject '4:0:0:0' [ 531.269620] Modules linked in: lpfc(-) qla2x00tgt(O) qla2xxx_scst(O) scst_vdisk(O) scst(O) dlm configfs libcrc32c scsi_transport_fc edd nfsd lockd grace nfs_acl snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device auth_rpcgss sunrpc dm_mod snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core iTCO_wdt snd_hwdep ppdev parport_pc tg3 snd_pcm libphy gpio_ich acpi_cpufreq iTCO_vendor_support snd_timer parport fjes snd sr_mod ehci_pci ptp lpc_ich tpm_tis floppy 8250_fintek cdrom pps_core soundcore i2c_i801 tpm hwmon sg pcspkr i915 drm_kms_helper drm fb_sys_fops sysimgblt sysfillrect syscopyarea i2c_algo_bit uhci_hcd ehci_hcd usbcore button video usb_common fan ata_generic ata_piix ahci libahci libata thermal [ 531.269778] CPU: 0 PID: 3482 Comm: rmmod Tainted: G O 4.4.0-rc8 #2 [ 531.269785] Hardware name: FUJITSU SIEMENS ESPRIMO E /D2164-A1, BIOS 5.00 R1.10.2164.A1 05/08/2006 [ 531.269791] 00000000 00000000 f47cbd14 c051cfe0 000000ed c09d07e8 f47cbd44 c025aefe [ 531.269808] c09c6620 f47cbd70 00000d9a c09d07e8 000000ed c041fbdf c041fbdf c0ad62c8 [ 531.269824] 00000000 f4644408 f47cbd5c c025afe3 00000009 f47cbd54 c09c6620 f47cbd70 [ 531.269841] Call Trace: [ 531.269852] [<c051cfe0>] dump_stack+0x44/0x64 [ 531.269859] [<c025aefe>] warn_slowpath_common+0x8e/0xd0 [ 531.269865] [<c041fbdf>] ? sysfs_remove_group+0x8f/0xa0 [ 531.269869] [<c041fbdf>] ? sysfs_remove_group+0x8f/0xa0 [ 531.269874] [<c025afe3>] warn_slowpath_fmt+0x33/0x40 [ 531.269879] [<c041fbdf>] sysfs_remove_group+0x8f/0xa0 [ 531.269885] [<c064fea9>] dpm_sysfs_remove+0x49/0x60 [ 531.269891] [<c06445df>] device_del+0x3f/0x1d0 [ 531.269897] [<c064478e>] device_unregister+0x1e/0x60 [ 531.269903] [<c050ca04>] bsg_unregister_queue+0x54/0x90 [ 531.269909] [<c0679216>] __scsi_remove_device+0x96/0xc0 [ 531.269913] [<c06778b7>] scsi_forget_host+0x57/0x60 [ 531.269919] [<c066c1d8>] scsi_remove_host+0x68/0x100 [ 531.269940] [<f8b5c16a>] lpfc_pci_remove_one_s3+0xca/0x2b0 [lpfc] [ 531.269957] [<f8b63cc5>] lpfc_pci_remove_one+0x65/0x80 [lpfc] [ 531.269963] [<c0652aa6>] ? __pm_runtime_resume+0x46/0x60 [ 531.269970] [<c0566bc8>] pci_device_remove+0x38/0xc0 [ 531.269975] [<c06488c2>] __device_release_driver+0x72/0xf0 [ 531.269979] [<c0648aaf>] driver_detach+0x8f/0xa0 [ 531.269984] [<c0647bcc>] bus_remove_driver+0x4c/0xc0 [ 531.269989] [<c06491e8>] driver_unregister+0x28/0x60 [ 531.269994] [<c0644802>] ? device_destroy+0x32/0x40 [ 531.269999] [<c0643c20>] ? class_dir_child_ns_type+0x10/0x10 [ 531.270004] [<c05667d8>] pci_unregister_driver+0x18/0x70 [ 531.270010] [<c0622317>] ? misc_deregister+0x67/0x90 [ 531.270024] [<f8b8b6ef>] lpfc_exit+0x1a/0x92b [lpfc] [ 531.270031] [<c02d603b>] ? find_module+0x1b/0x20 [ 531.270035] [<c02d9b56>] SyS_delete_module+0x176/0x1f0 [ 531.270041] [<c0380dfb>] ? do_munmap+0x22b/0x2c0 [ 531.270046] [<c0380ed6>] ? vm_munmap+0x46/0x60 [ 531.270052] [<c0201bd1>] do_fast_syscall_32+0x91/0x140 [ 531.270059] [<c07f9074>] sysenter_past_esp+0x3d/0x69 [ 531.270064] ---[ end trace 6d7ac64edaa712d5 ]--- [ 531.270160] ------------[ cut here ]------------ Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
