Ping On Sat, Apr 2, 2022 at 3:06 PM Yi Zhang <yi.zhang@xxxxxxxxxx> wrote: > > Hello > I found the scsi-debug module removing [1] takes more than 3mins > during blktests srp/ tests, and bisecting shows it was introduced from > [2], > Pls help check it, let me know if you need more info for it, thanks. > > [1] > # time ./check srp/001 > srp/001 (Create and remove LUNs) [passed] > runtime ... 3.194s > real 3m12.119s > user 0m0.859s > sys 0m2.227s > > # ps aux | grep modprobe > root 250153 0.0 0.0 10600 2264 pts/0 D+ 01:34 0:00 > modprobe -r scsi_debug > > # cat /proc/250153/stack > [<0>] blk_execute_rq+0x95/0xb0 > [<0>] __scsi_execute+0xe2/0x250 > [<0>] sd_sync_cache+0xac/0x190 > [<0>] sd_shutdown+0x67/0xf0 > [<0>] sd_remove+0x39/0x80 > [<0>] __device_release_driver+0x234/0x240 > [<0>] device_release_driver+0x23/0x30 > [<0>] bus_remove_device+0xd8/0x140 > [<0>] device_del+0x18b/0x3f0 > [<0>] __scsi_remove_device+0x102/0x140 > [<0>] scsi_forget_host+0x55/0x60 > [<0>] scsi_remove_host+0x72/0x110 > [<0>] sdebug_driver_remove+0x22/0xa0 [scsi_debug] > [<0>] __device_release_driver+0x181/0x240 > [<0>] device_release_driver+0x23/0x30 > [<0>] bus_remove_device+0xd8/0x140 > [<0>] device_del+0x18b/0x3f0 > [<0>] device_unregister+0x13/0x60 > [<0>] sdebug_do_remove_host+0xd1/0xf0 [scsi_debug] > [<0>] scsi_debug_exit+0x58/0xe1e [scsi_debug] > [<0>] __do_sys_delete_module.constprop.0+0x170/0x260 > [<0>] do_syscall_64+0x3a/0x80 > [<0>] entry_SYSCALL_64_after_hwframe+0x44/0xae > > # dmesg | tail -10 > [ 345.863755] ib_srpt:srpt_release_channel_work: ib_srpt 10.16.221.74-32 > [ 345.863855] ib_srpt:srpt_release_channel_work: ib_srpt 10.16.221.74-34 > [ 345.863953] ib_srpt:srpt_release_channel_work: ib_srpt 10.16.221.74-36 > [ 346.373371] sd 15:0:0:0: [sdb] Synchronizing SCSI cache > [ 532.864536] sd 15:0:0:0: [sdb] Synchronize Cache(10) failed: > Result: hostbyte=DID_TIME_OUT driverbyte=DRIVER_OK > ------> seems most of the time were taken here > [ 532.929626] eno1np0 speed is unknown, defaulting to 1000 > [ 532.938524] eno2np1 speed is unknown, defaulting to 1000 > [ 532.943957] eno4 speed is unknown, defaulting to 1000 > [ 532.998059] rdma_rxe: rxe-ah pool destroyed with unfree'd elem > [ 533.011781] rdma_rxe: unloaded > > [2] > commit 2aad3cd8537033cd34f70294a23f54623ffe9c1b (refs/bisect/bad) > Author: Douglas Gilbert <dgilbert@xxxxxxxxxxxx> > Date: Sat Jan 8 20:28:45 2022 -0500 > > scsi: scsi_debug: Address races following module load -- Best Regards, Yi Zhang
