On Mon, Jan 31, 2011 at 9:55 PM, Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> wrote: > [ ... ] > > Hmmm, I don't see how this would make a difference, and FYI the above > test loops for 'rmmod tcm_mvsas' where running with slub_debug=FZ w/o > issue. > > Well, if you are certain things are working fine on .37-FINAL, you can > try using 'git bisect' from a known working LIO .37 commit and build > +test until you locate an offending commit. > > But again, this appears to be working in lio-core-2.6.git/linus-38-rc2, > please verify this is what is being tested..? Thanks for looking at this. This is what I get with v2.6.38-rc2, tcm_mvsas and slub poisoning: # cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-2.6.38-rc2 root=UUID=c2d91556-8ed3-4a2a-95d9-50d0203bcfcc ro quiet splash slub_debug=FPUZ # modprobe tcm_mvsas # rmmod tcm_mvsas # rmmod target_core_mod Segmentation fault and on the console: <<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>>>>>>>>>>>>> Initialized struct target_fabric_configfs: ffff880025e09090 for mvsas <<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>>>>>> TCM_MVSAS[0] - Set fabric -> tcm_mvsas_fabric_configfs <<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>>>>>>>>>>>>> Target_Core_ConfigFS: DEREGISTER -> Releasing tf: mvsas <<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>>>>>> TCM_MVSAS[0] - Cleared tcm_mvsas_fabric_configfs general protection fault: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-0:1.0/uevent CPU 0 Modules linked in: target_core_mod(-) configfs netconsole iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi binfmt_misc psmouse serio_raw i2c_piix4 shpchp mptspi mptscsih e1000 mptbase scsi_transport_spi floppy [last unloaded: tcm_mvsas] Pid: 1432, comm: rmmod Not tainted 2.6.38-rc2 #4 440BX Desktop Reference Platform/VMware Virtual Platform RIP: 0010:[<ffffffff81094684>] [<ffffffff81094684>] __lock_acquire+0x64/0x1510 RSP: 0018:ffff880022697b18 EFLAGS: 00010046 RAX: 0000000000000046 RBX: 6b6b6b6b6b6b6be3 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff880022697be8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88002a1a2350 FS: 00007f844069c700(0000) GS:ffff88003d600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f8440189fc0 CR3: 0000000025d67000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rmmod (pid: 1432, threadinfo ffff880022696000, task ffff88002a1a2350) Stack: 0000000000000004 ffff88002a1a2350 ffffffff82030820 ffffffff81010dfd ffff880022697b68 ffffffff81ed0590 ffff880022697b68 0000000000000000 3161938ca065261c ffff88002a1a2b08 ffff880022697c48 0000000000000002 Call Trace: [<ffffffff81010dfd>] ? save_stack_trace+0x2d/0x50 [<ffffffff81095bd0>] lock_acquire+0xa0/0x150 [<ffffffffa00e5f7f>] ? detach_groups+0x2f/0x120 [configfs] [<ffffffff81540f44>] ? __mutex_lock_common+0x2a4/0x3e0 [<ffffffffa00e5ff4>] ? detach_groups+0xa4/0x120 [configfs] [<ffffffff815427f6>] _raw_spin_lock+0x36/0x70 [<ffffffffa00e5f7f>] ? detach_groups+0x2f/0x120 [configfs] [<ffffffffa00e5f7f>] detach_groups+0x2f/0x120 [configfs] [<ffffffffa00e5f36>] configfs_detach_group+0x16/0x30 [configfs] [<ffffffffa00e6002>] detach_groups+0xb2/0x120 [configfs] [<ffffffffa00e5f36>] configfs_detach_group+0x16/0x30 [configfs] [<ffffffffa00e6002>] detach_groups+0xb2/0x120 [configfs] [<ffffffffa00e5f36>] configfs_detach_group+0x16/0x30 [configfs] [<ffffffffa00e6002>] detach_groups+0xb2/0x120 [configfs] [<ffffffffa00e5f36>] configfs_detach_group+0x16/0x30 [configfs] [<ffffffffa00e6002>] detach_groups+0xb2/0x120 [configfs] [<ffffffffa00e5f36>] configfs_detach_group+0x16/0x30 [configfs] [<ffffffffa00e6112>] configfs_unregister_subsystem+0xa2/0x130 [configfs] [<ffffffffa00efc84>] target_core_exit_configfs+0x184/0x1c0 [target_core_mod] [<ffffffff810a0a12>] sys_delete_module+0x1a2/0x280 [<ffffffff81542559>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff81002f82>] system_call_fastpath+0x16/0x1b Code: 8b 05 c1 64 9a 00 4c 89 75 f0 48 89 fb 41 89 d5 4c 8b 55 10 45 85 c0 0f 84 4a 04 00 00 8b 3d 28 86 cd 00 85 ff 0f 84 5c 04 00 00 <48> 81 3b 20 05 dd 81 b8 01 00 00 00 44 0f 44 e0 83 fe 01 0f 86 RIP [<ffffffff81094684>] __lock_acquire+0x64/0x1510 RSP <ffff880022697b18> ---[ end trace 4abcf014267c1c85 ]--- -- 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
