Hi Himanshu, This is my progress. First, I compiled 4.15-rc6, I found linux hang when booting, the stack showed something wrong in qla2xxx driver. Second, I want to find which commit introduced the issue. So I tried many times via git bisect to linux kernel. Finally, I found the commit 726b85487067d7f5b23495bc33c484b8517c4074 introduced the issue. The attached log is related to this commit. Also ubuntu kernel has this issue: https://launchpad.net/ubuntu/+archive/primary/+files/linux-image-4.13.0-25-generic_4.13.0-25.29_amd64.deb https://launchpad.net/ubuntu/+archive/primary/+files/linux-image-extra-4.13.0-25-generic_4.13.0-25.29_amd64.deb Regards Chang Limin -----Original Message----- From: Madhani, Himanshu [mailto:Himanshu.Madhani@xxxxxxxxxx] Sent: Tuesday, January 16, 2018 12:59 PM To: changlimin (Cloud) Cc: Nicholas A. Bellinger; Tran, Quinn; jifuliang (Cloud); zhangguanghui (Cloud); zhangzijian (Cloud); target-devel; linux-scsi Subject: Re: A qla2xxx commit cause Linux no response, has not fixed in lastest version 4.15-rc6 Hi Chang, > On Jan 15, 2018, at 4:27 PM, Changlimin <changlimin@xxxxxxx> wrote: > > Hi Himanshu, > The issue is: When insmod the qla2xxx.ko from 4.15-rc6, linux hang. >From the log file attached. I see that you are trying to load driver from 4.9.x in 4.15.0-rc6. [ 279.898704] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.38-k-debug. 4.15.0-rc6 had driver version 10.00.00.02-k. Would you check if you have all the driver changes pulled in with kernel 4.15.0-rc6. > I have git bisect the commits. > The issue was introduced in commit: 726b85487067d7f5b23495bc33c484b8517c4074 qla2xxx: Add framework for async fabric discovery. > The previous commit is good: 5d964837c6a743193c63c8912f98834c7457ba5c qla2xxx: Track I-T nexus as single fc_port struct . > > Regards > Chang Limin > > -----Original Message----- > From: Madhani, Himanshu [mailto:Himanshu.Madhani@xxxxxxxxxx] > Sent: Tuesday, January 16, 2018 12:58 AM > To: Nicholas A. Bellinger > Cc: changlimin (Cloud); Tran, Quinn; jifuliang (Cloud); zhangguanghui > (Cloud); zhangzijian (Cloud); target-devel; linux-scsi > Subject: Re: A qla2xxx commit cause Linux no response, has not fixed > in lastest version 4.15-rc6 > > Hi Nic, Chang, > >> On Jan 12, 2018, at 9:28 PM, Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> wrote: >> >> Hi Chang & Co, >> >> (Adding list + Himanshu CC') >> >> On Sun, 2018-01-07 at 10:21 +0000, Changlimin wrote: >>> Hi, >>> It seems the qla2xxx commit cause Linux no response, has not fixed in lastest version 4.15-rc6. >>> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable. >>> g >>> it/commit/?id=726b85487067d7f5b23495bc33c484b8517c4074 >>> >> >> Thanks for reporting + including debug log. :) >> >>> lspci: >>> 0a:00.0 Fibre Channel: QLogic Corp. ISP2532-based 8Gb Fibre Channel >>> to PCI Express HBA (rev 02) >>> 0a:00.1 Fibre Channel: QLogic Corp. ISP2532-based 8Gb Fibre Channel >>> to PCI Express HBA (rev 02) >>> >>> syslog: >>> qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.38-k. >>> qla2xxx [0000:0a:00.0]-001a: : MSI-X vector count: 32. >>> qla2xxx [0000:0a:00.0]-001d: : Found an ISP2532 irq 16 iobase 0xffffb0d5cc501000. >>> qla2xxx [0000:0a:00.0]-00c6:1: MSI-X: Failed to enable support with 32 vectors, using 26 vectors. >>> scsi host1: qla2xxx >>> qla2xxx [0000:0a:00.0]-00fb:1: QLogic HPAJ764A - HP 8Gb Dual Channel PCI-e 2.0 FC HBA. >>> qla2xxx [0000:0a:00.0]-00fc:1: ISP2532: PCIe (5.0GT/s x8) @ 0000:0a:00.0 hdma+ host#=1 fw=8.03.00 (90d5). >>> qla2xxx [0000:0a:00.1]-001a: : MSI-X vector count: 32. >>> qla2xxx [0000:0a:00.1]-001d: : Found an ISP2532 irq 17 iobase 0xffffb0d5cc5d9000. >>> qla2xxx [0000:0a:00.1]-00c6:2: MSI-X: Failed to enable support with 32 vectors, using 26 vectors. >>> scsi host2: qla2xxx >>> qla2xxx [0000:0a:00.1]-00fb:2: QLogic HPAJ764A - HP 8Gb Dual Channel PCI-e 2.0 FC HBA. >>> qla2xxx [0000:0a:00.1]-00fc:2: ISP2532: PCIe (5.0GT/s x8) @ 0000:0a:00.1 hdma+ host#=2 fw=8.03.00 (90d5). >>> qla2xxx [0000:0a:00.0]-500a:1: LOOP UP detected (8 Gbps). >>> qla2xxx [0000:0a:00.1]-500a:2: LOOP UP detected (8 Gbps). >>> >>> The attached file is the module log. >>> >>> Do you have any advice? >> >> Quinn & Himanshu folks, any comments..? >> > > What is the issue here? I am not clear form the snippet above. > > One thing I noticed that, if you are using 4.15-rc6 driver version > should be 10.00.00.02-k but the snippet shows 8.07.00.38-k which tells > me you might > > Thanks, > - Himanshu > <qla2xxx-full.log.gz> Thanks, - Himanshu