The patch titled emi62: fix crash when trying to load EMI 6|2 firmware has been added to the -mm tree. Its filename is emi62-fix-crash-when-trying-to-load-emi-62-firmware.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: emi62: fix crash when trying to load EMI 6|2 firmware From: Clemens Ladisch <clemens@xxxxxxxxxx> While converting emi62 to use request_firmware(), the driver was also changed to use the ihex helper functions. However, this broke the loading of the FPGA firmware because the code tries to access the addr field of the EOF record which works with a plain array that has an empty last record but not with the ihex helper functions where the end of the data is signaled with a NULL record pointer, resulting in: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<f80d248c>] emi62_load_firmware+0x33c/0x740 [emi62] This can be fixed by changing the loop condition to test the return value of ihex_next_binrec() directly (like in emi26.c). Signed-off-by: Clemens Ladisch <clemens@xxxxxxxxxx> Reported-and-tested-by: Der Mickster <retroeffective@xxxxxxxxx> Acked-by: David Woodhouse <David.Woodhouse@xxxxxxxxx> Cc: Greg KH <greg@xxxxxxxxx> Cc: <stable@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/usb/misc/emi62.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN drivers/usb/misc/emi62.c~emi62-fix-crash-when-trying-to-load-emi-62-firmware drivers/usb/misc/emi62.c --- a/drivers/usb/misc/emi62.c~emi62-fix-crash-when-trying-to-load-emi-62-firmware +++ a/drivers/usb/misc/emi62.c @@ -167,7 +167,7 @@ static int emi62_load_firmware (struct u err("%s - error loading firmware: error = %d", __func__, err); goto wraperr; } - } while (i > 0); + } while (rec); /* Assert reset (stop the CPU in the EMI) */ err = emi62_set_reset(dev,1); _ Patches currently in -mm which might be from clemens@xxxxxxxxxx are linux-next.patch emi62-fix-crash-when-trying-to-load-emi-62-firmware.patch vt-make-the-default-cursor-shape-configurable.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html