Subject : 2.6.27-rc1 oops when plugging USB disk Submitter : Lukas Hejtmanek <xhejtman@ics.muni.cz> Date : 2008-08-01 13:35 References : http://marc.info/?l=linux-kernel&m=121759786223716&w=4 This entry is being used for tracking a regression from 2.6.26. Please don't close it until the problem is fixed in the mainline.
In 2.6.27-rc3, if I do modprobe usb_storage. the modprobe stucks. the sysrq shows: Aug 13 18:30:11 anubis klogd: [ 2490.460597] modprobe D ffff880067bc9cf0 0 25525 6549 Aug 13 18:30:11 anubis klogd: [ 2490.460597] ffff880057ed9be8 0000000000000086 0000000000000000 ffff880057ed9b58 Aug 13 18:30:11 anubis klogd: [ 2490.460597] ffffffff806e2b80 ffff880057ef0b00 ffffffff80647340 ffff880057ef0d30 Aug 13 18:30:11 anubis klogd: [ 2490.460597] 00000000fffffff4 000000010009d402 ffff880057ef0d30 0000000000000000 Aug 13 18:30:11 anubis klogd: [ 2490.460597] Call Trace: Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff802f6a9b>] create_dir+0x6b/0xc0 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff8050180d>] schedule_timeout+0x8d/0xd0 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff80347af1>] kobject_add_internal+0xf1/0x1f0 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff80347d7e>] kobject_init_and_add+0x6e/0x90 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff80502171>] __down+0x61/0xa0 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff80252136>] down+0x46/0x50 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff8021e9e0>] do_flush_tlb_all+0x0/0x40 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff803b8440>] __driver_attach+0x30/0x90 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff803b8410>] __driver_attach+0x0/0x90 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff803b7a9b>] bus_for_each_dev+0x5b/0x80 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff8029ef15>] kmem_cache_alloc+0x65/0xa0 Aug 13 18:30:11 anubis klogd: [ 2490.460597] [<ffffffff803b7378>] bus_add_driver+0x1e8/0x260 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff803b8679>] driver_register+0x69/0x150 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff80404e89>] usb_register_driver+0xa9/0x120 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffffa000d000>] usb_stor_init+0x0/0x4d [usb_storage] Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffffa000d029>] usb_stor_init+0x29/0x4d [usb_storage] Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff80209253>] do_one_initcall+0x43/0x190 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff8025fdcf>] sys_init_module+0x17f/0x1b20 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff80411de0>] usb_usual_set_present+0x0/0x40 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff802a6fde>] sys_newfstat+0x2e/0x50 Aug 13 18:30:11 anubis klogd: [ 2490.460598] [<ffffffff8020c4cb>] system_call_fastpath+0x16/0x1b Aug 13 18:30:11 anubis klogd: [ 2490.460598]
I need to see the dmesg long, with CONFIG_USB_DEBUG enabled. For what it's worth, I just booted 2.6.27-rc3 on my machine. When I loaded the usb-storage module, it worked perfectly.
ah, forgot to say. I plugged the usb mass-storage device first, nothing happened. so I modprobed the device manually with the result above. I give a try tomorrow with USB_DEBUG.
well, I'm unable to reproduce it with the current git head. Maybe this bug can be closed and I reopen it, if I see this bug again.