On Mon, 24 Mar 2014, Chris Cheng wrote: > system kernel is 3.13.6, the origin issue is mount usb storage(3.0) on > usb3.0 port not smooth, i found the solve method is revert xhci.c > patch, here is the link : > https://lkml.org/lkml/2014/3/7/295 > > > After i revert the patch, mount usb storage is fine. > But it takes some issue, here is test case : > > Here is test case : > usb storage 2.0 remove from usb 3.0 port => kernel trace > usb storage 2.0 remove from usb 2.0 port => kernel trace > usb storage 3.0 remove from usb 3.0 port => kernel trace > > Kernel trace message: > > [224189.786719] usb 2-1: USB disconnect, device number 4 > [224189.820934] ------------[ cut here ]------------ > [224189.820949] WARNING: CPU: 3 PID: 14554 at fs/sysfs/group.c:214 > sysfs_remove_group+0x37/0x69() > [224189.820953] sysfs group c1851c34 not found for kobject 'target7:0:0' > [224189.820956] Modules linked in: snd_hda_intel(F) > snd_hda_codec_via(F) snd_hda_codec(F) snd_hwdep(F) snd_pcm_oss(F) > snd_mixer_oss(F) snd_pcm(F) snd_seq_dummy(F) snd_page_alloc(F) > snd_seq_oss(F) snd_seq_midi_event(F) snd_seq(F) snd_timer(F) > snd_seq_device(F) snd(F) parport_pc(F) fan(F) ppdev(F) lp(F) > parport(F) > [224189.820985] CPU: 3 PID: 14554 Comm: umount Tainted: GF W 3.13.6 #1 > [224189.820988] Hardware name: LG CNS t180/t180, BIOS 1.11 03/21/2014 > [224189.820991] 00000000 00000000 da877d98 c154fb31 c175e60a da877db0 > c102e9f5 c112446b > [224189.821001] 00000000 c1851c34 ea14f21c da877dc8 c102ea70 00000009 > da877dc0 c175e60a > [224189.821010] da877ddc da877df0 c112446b c175e5bf 000000d6 c175e60a > c1851c34 ea28e0e0 > [224189.821019] Call Trace: > [224189.821028] [<c154fb31>] dump_stack+0x41/0x52 > [224189.821036] [<c102e9f5>] warn_slowpath_common+0x61/0x78 > [224189.821042] [<c112446b>] ? sysfs_remove_group+0x37/0x69 > [224189.821047] [<c102ea70>] warn_slowpath_fmt+0x26/0x2a > [224189.821053] [<c112446b>] sysfs_remove_group+0x37/0x69 > [224189.821060] [<c133a8bd>] dpm_sysfs_remove+0x2d/0x30 > [224189.821065] [<c1334b1c>] device_del+0x2c/0x130 > [224189.821072] [<c134ae09>] scsi_target_reap_usercontext+0x1f/0x2a > [224189.821078] [<c103f04a>] execute_in_process_context+0x16/0x45 > [224189.821083] [<c134b714>] scsi_target_reap+0x81/0x87 > [224189.821090] [<c134cd52>] scsi_device_dev_release_usercontext+0x116/0x13b > [224189.821095] [<c103f04a>] execute_in_process_context+0x16/0x45 > [224189.821101] [<c134c9ea>] scsi_device_dev_release+0x13/0x15 > [224189.821107] [<c13342d5>] device_release+0x46/0x78 > [224189.821114] [<c1232827>] kobject_cleanup+0x3e/0x4e > [224189.821120] [<c123275c>] kobject_put+0x3c/0x3e > [224189.821125] [<c1232832>] ? kobject_cleanup+0x49/0x4e > [224189.821131] [<c1334173>] put_device+0xf/0x11 > [224189.821137] [<c13443cc>] scsi_device_put+0x2f/0x33 > [224189.821143] [<c135102e>] scsi_disk_put+0x23/0x31 > [224189.821148] [<c13524f5>] sd_release+0x40/0x44 > [224189.821154] [<c11042ba>] __blkdev_put+0x83/0xfa > [224189.821159] [<c1104329>] __blkdev_put+0xf2/0xfa > [224189.821164] [<c1104409>] blkdev_put+0xd8/0xde > [224189.821170] [<c10e0d1f>] kill_block_super+0x54/0x58 > [224189.821177] [<c10e0422>] deactivate_locked_super+0x24/0x41 > [224189.821182] [<c10e0d7d>] deactivate_super+0x28/0x2b > [224189.821188] [<c10f3016>] mntput_no_expire+0xc7/0xe3 > [224189.821194] [<c10f3d0d>] SYSC_umount+0x293/0x2b0 > [224189.821200] [<c10f3d38>] SyS_umount+0xe/0x10 > [224189.821206] [<c155a1fa>] sysenter_do_call+0x12/0x22 > [224189.821210] ---[ end trace 096ea20d8206361e ]-- This problem has been fixed in linux-next: https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit?id=e63ed0d7a98014fdfc2cfeb3f6dada313dcabb59 Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
