Ignore comment #5, that was intended for a different bug and added in error.
Laurie -- 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/1858840 Title: Vport creation leads to out of memory and server hung on Ubuntu 18.04.3 (5.0) on Broadcom FC HBAs Status in linux package in Ubuntu: Invalid Bug description: Jeff, We have analyzed this issue and see that there are 3 missing patches required to fix this problem. Otherwise vport creation >3 (depending on the customers configuration) will result in a hang for FC or NVMe/FC adapters. Please pull these changes into the next hardware release. These are the missing commits: 959239d [scsi] scsi: core: avoid pre-allocating big SGL for data 5418f2f [scsi] scsi: core: avoid pre-allocating big SGL for protection information 250f285 [nvme] scsi: lib/sg_pool.c: improve APIs for allocating sg pool Laurie --------------------------------------------- CONFIGURATION DETAILS Host OS with Support Pack - Ubuntu 18.04.3 - HWE () Guest/VM OS Details - System(s) Under Test - IBM x3650 M4 Adapter(s) Under Test - Prism 1-port IPL Name - Active Profile ID - Network Configuration - SAN Configuration - OneCapture file attached - BUG REPRODUCTION DETAILS Test Case ID or ATID - Reproducibility of Bug - Always Last Known Working Build - Time to Reproduce Bug - 5 mins Steps To Reproduce Bug - Create 126 vports on Prism adapter, observe that server goes out of memory and hung. root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 1.7G 13G 1.3M 299M 13G Swap: 2.0G 0B 2.0G root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 2.1G 12G 1.3M 299M 12G Swap: 2.0G 0B 2.0G root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 6.1G 8.7G 1.5M 301M 8.7G Swap: 2.0G 0B 2.0G root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 13G 1.4G 1.6M 303M 1.4G Swap: 2.0G 0B 2.0G root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 14G 523M 1.7M 303M 528M Swap: 2.0G 0B 2.0G root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 14G 147M 96K 48M 5.0M Swap: 2.0G 38M 2.0G root@ubuntu18043:~# free -h total used free shared buff/cache available Mem: 15G 14G 145M 96K 49M 3.6M Swap: 2.0G 38M 2.0G Nov 28 05:37:29 ubuntu18043 kernel: [ 1523.166689] scsi host112: Emulex LPe36000 32Gb PCIe Fibre Channel Adapter on PCI bus 11 device 00 irq 26 port 0 Logical Link Speed: 8000 Mbps PCI resettable Nov 28 05:37:29 ubuntu18043 kernel: [ 1523.233464] lpfc 0000:11:00.0: 0:(111):1825 Vport Created. Nov 28 05:37:29 ubuntu18043 kernel: [ 1523.234071] scsi host1: vport-1:0-110 created via shost1 channel 0 Nov 28 05:37:29 ubuntu18043 kernel: [ 1523.698396] scsi host113: Emulex LPe36000 32Gb PCIe Fibre Channel Adapter on PCI bus 11 device 00 irq 26 port 0 Logical Link Speed: 8000 Mbps PCI resettable Nov 28 05:37:30 ubuntu18043 kernel: [ 1523.862582] lpfc 0000:11:00.0: 0:(112):1825 Vport Created. Nov 28 05:37:30 ubuntu18043 kernel: [ 1523.863142] scsi host1: vport-1:0-111 created via shost1 channel 0 Nov 28 05:37:31 ubuntu18043 kernel: [ 1525.097335] scsi host114: Emulex LPe36000 32Gb PCIe Fibre Channel Adapter on PCI bus 11 device 00 irq 26 port 0 Logical Link Speed: 8000 Mbps PCI resettable After creating 111 vports, server ran out of memory. As server is in hung state, no Crash dump got collected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1858840/+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
