On Mon, 2014-04-28 at 14:36 -0700, Jun Wu wrote: > Hi Nicholas, > > We upgraded Ubuntu 13.10 to the latest 14.04 which has a > 3.13.0-24-generic kernel. I reproduced the bug with v3.13. V3.14 > doesn't compile on the kernel. The tfc_io.c is the same in v3.14. > > The initiator I am using is open-fcoe-3.11. > > root@poc2:~# modinfo fcoe > filename: /lib/modules/3.13.0-24-generic/kernel/drivers/scsi/fcoe/fcoe.ko > license: GPL v2 > description: FCoE > author: Open-FCoE.org > srcversion: 6DA44562FC66B71637941E8 > depends: libfcoe,libfc,scsi_transport_fc > intree: Y > vermagic: 3.13.0-24-generic SMP mod_unload modversions > signer: Magrathea: Glacier signing key > sig_key: 00:A5:A6:57:59:DE:47:4B:C5:C4:31:20:88:0C:1B:94:A5:39:F4:31 > sig_hashalgo: sha512 > parm: ddp_min:Minimum I/O size in bytes for Direct Data > Placement (DDP). (uint) > parm: debug_logging:a bit mask of logging levels (int) > > root@poc2:~# fcoeadm -v > 1.0.29 > > By issuing "echo eth2 > /sys/module/libfcoe/parameters/create_vn2vn", > the initiator can see the target drives. > > I always run fio with 4KB sequential read on all the drives to > reproduce the bug. Here is the crash dump with your debug information: > > [ 2883.272203] TARGET_CORE[fc]: Unsupported SCSI Opcode 0x85, sending > CHECK_CONDITION. > [ 3473.092860] CDB: 0x28 data_length: 4096 t_data_sg: (null) > t_data_nents: 0se_cmd_flags: 0x00000109 > [ 3473.092887] ------------[ cut here ]------------ > [ 3473.092958] kernel BUG at /home/zb/target3.13/target/tcm_fc/tfc_io.c:100! > [ 3473.093056] invalid opcode: 0000 [#1] SMP > [ 3473.093123] Modules linked in: ib_srpt tcm_qla2xxx qla2xxx > tcm_loop(OF) tcm_fc(OF) iscsi_target_mod(OF) target_core_pscsi(OF) > target_core_file(OF) target_core_iblock(OF) target_core_mod(OF) Mmmm, the flags listed here for the target modules (OF) indicate that the modules are being built both '(O)ut of tree' and are '(F)orcibly loaded'... Also, the source path '/home/zb/target3.13/target/tcm_fc/tfc_io.c' indicates some broken / strange out-of-tree build process for the target code..? Why are you building the target this way, and why aren't you using the upstream target sources..? --nab -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
