Hi, thanks for your responds. the card use option.ko Bestregards marui ----- Original Message ----- From: "Alan Cox" <alan@xxxxxxxxxxxxxxxxxxx> To: "marui" <m00150988@xxxxxxxxxx> Cc: "Greg KH" <greg@xxxxxxxxx>; "Alan Stern" <stern@xxxxxxxxxxxxxxxxxxx>; "USB list" <linux-usb@xxxxxxxxxxxxxxx>; "Kernel development list" <linux-kernel@xxxxxxxxxxxxxxx>; <zihan@xxxxxxxxxx>; <wangyeqi@xxxxxxxxxx> Sent: Wednesday, October 27, 2010 5:32 PM Subject: Re: [PATCH] fix oops in usbserial_cleanup function >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999651] serial_cleanup - port 5 >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999653] destroy_serial - (null) > > So someone called destroy serial with serial->type->desc NULL > >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999654] return_serial >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999671] BUG: unable to handle kernel NULL pointer dereference at (null) >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999675] IP: [<(null)>] (null) > > And serial->type->release NULL > >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999762] [<fb877b40>] ? destroy_serial+0x80/0xd0 [usbserial] >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999765] [<fb877ac0>] ? destroy_serial+0x0/0xd0 [usbserial] >> Oct 27 00:20:10 linux-mec9 kernel: [ 6441.999770] [<c03f351a>] ? kref_put+0x2a/0x60 > > Which came from the tty close (which will be after the hangup if you > pulled the card out with the modem in use). Kref leak perhaps ? > > What driver is actually being used for the card itself ? > > Alan -- 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
