Hi list, I am hitting following bug with CONFIG_PREEMP enabled VSMP kernel ( 2.6.24) compiled for mips34K core. BUG: using smp_processor_id() in preemptible [00000001] code: usb-storage/190 caller is blast_dcache32+0x30/0x25c Call Trace: [<8012f338>] vprintk+0x2e8/0x584 [<8012f354>] vprintk+0x304/0x584 [<801111a0>] blast_dcache32+0x30/0x25c [<80387d5c>] debug_smp_processor_id+0xcc/0xe0 [<801111a0>] blast_dcache32+0x30/0x25c [<80387d5c>] debug_smp_processor_id+0xcc/0xe0 [<801111a0>] blast_dcache32+0x30/0x25c [<8010d9e4>] dma_map_sg+0x128/0x144 [<80410a84>] urb_destroy+0x0/0x38 [<801827b0>] kfree+0x8c/0x20c [<80411944>] usb_sg_init+0x310/0x324 [<8042a708>] usb_stor_bulk_transfer_sg+0xd0/0x174 [<8042a914>] usb_stor_Bulk_transport+0x168/0x324 [<80121a94>] enqueue_entity+0xcc/0x130 [<8042a3f4>] usb_stor_invoke_transport+0x38/0x27c [<80149ee8>] remove_wait_queue+0x1c/0x60 [<8054568c>] _spin_unlock_irqrestore+0x24/0x44 [<805425fc>] __down_interruptible+0x144/0x1e4 [<801239f0>] default_wake_function+0x0/0x8 [<8042bd58>] usb_stor_control_thread+0x268/0x320 [<801497c0>] kthread+0x0/0xa4 [<80149800>] kthread+0x40/0xa4 [<801241d8>] complete+0x4c/0x6c [<8042baf0>] usb_stor_control_thread+0x0/0x320 [<80149818>] kthread+0x58/0xa4 [<8010476c>] kernel_thread_helper+0x10/0x18 Any pointers to debug this / fix this will be greatly appreciated. Thanking you, Anoop
