Marcin Slusarz 327d74f6b6 USB: emi26: fix oops on load ... Fix oops introduced by commit ae93a55bf9 (emi26: use request_firmware()): usb 1-1: new full speed USB device using uhci_hcd and address 2 usb 1-1: configuration #1 chosen from 1 choice emi26 - firmware loader 1-1:1.0: emi26_probe start usb 1-1: firmware: requesting emi26/loader.fw usb 1-1: firmware: requesting emi26/bitstream.fw usb 1-1: firmware: requesting emi26/firmware.fw usb 1-1: emi26_set_reset - 1 usb 1-1: emi26_set_reset - 0 BUG: unable to handle kernel NULL pointer dereference at 00000000 IP: [<f80dc487>] emi26_probe+0x2f7/0x620 [emi26] *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/firmware/1-1/loading Modules linked in: emi26(+) ipv6 cpufreq_ondemand coretemp arc4 ecb iwl3945 irtty_sir sir_dev nsc_ircc ehci_hcd uhci_hcd mac80211 irda usbcore snd_hda_intel thinkpad_acpi rfkill hwmon led_class e1000e snd_pcm cfg80211 snd_timer crc_ccitt snd snd_page_alloc aes_generic Pid: 5082, comm: modprobe Not tainted (2.6.28 #2) 17023QG EIP: 0060:[<f80dc487>] EFLAGS: 00010206 CPU: 0 EIP is at emi26_probe+0x2f7/0x620 [emi26] EAX: 0000015c EBX: 00000000 ECX: c1ffd9c0 EDX: 00000000 ESI: 0000015c EDI: f6bb215c EBP: f6bb0400 ESP: f00ebcfc DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process modprobe (pid: 5082, ti=f00ea000 task=f5c7c700 task.ti=f00ea000) Stack: 0000015c 000000a5 f6a67cb8 f80dc7e0 c01c6262 fbef2986 f6bb2000 00008fe0 0000015c f715f748 f715f740 f715f738 f715f748 f6a67c00 f80dd040 f80dcfc0 f6bb0400 fbacb290 f6a67c94 fbae0160 c01c70bf 00000000 f6a67c1c 00000000 Call Trace: [<c01c6262>] sysfs_add_one+0x12/0x50 [<fbacb290>] usb_probe_interface+0xa0/0x140 [usbcore] [<c01c70bf>] sysfs_create_link+0xf/0x20 [<c02dead2>] driver_probe_device+0x82/0x180 [<fbac9eeb>] usb_match_id+0x3b/0x50 [usbcore] [<c02dec4e>] __driver_attach+0x7e/0x80 [<c02de27a>] bus_for_each_dev+0x3a/0x60 [<c02de956>] driver_attach+0x16/0x20 [<c02debd0>] __driver_attach+0x0/0x80 [<c02de7b1>] bus_add_driver+0x1a1/0x220 [<c02dee4d>] driver_register+0x4d/0x120 [<c024e622>] idr_get_empty_slot+0xf2/0x290 [<fbacab71>] usb_register_driver+0x81/0x100 [usbcore] [<f806c000>] emi26_init+0x0/0x14 [emi26] [<c0101126>] do_one_initcall+0x36/0x1b0 [<c01c5e70>] sysfs_ilookup_test+0x0/0x10 [<c0197a61>] ifind+0x31/0x90 [<c01c6229>] __sysfs_add_one+0x59/0x80 [<c01c64e4>] sysfs_addrm_finish+0x14/0x1c0 [<c0175ca3>] __vunmap+0xa3/0xd0 [<c014b854>] load_module+0x1544/0x1640 [<c014b9d7>] sys_init_module+0x87/0x1b0 [<c0187f41>] sys_read+0x41/0x70 [<c01032a5>] sysenter_do_call+0x12/0x21 [<c03d0000>] wait_for_common+0x40/0x110 Code: 66 c1 e8 08 66 09 d0 75 a5 31 d2 89 e8 e8 72 fc ff ff 85 c0 0f 88 9a 02 00 00 b8 fa 00 00 00 e8 30 46 05 c8 8b 74 24 28 8b 5e 04 <8b> 03 89 44 24 1c 0f c8 89 44 24 1c 0f b7 4b 04 c7 44 24 20 00 EIP: [<f80dc487>] emi26_probe+0x2f7/0x620 [emi26] SS:ESP 0068:f00ebcfc ---[ end trace 2eefa13825431230 ]--- After the last "package" of firmware data is sent to the device, we dereference NULL pointer (on access to rec->addr). Fix it. Reported--by: David Flatz <david@upcs.at> Tested-by: David Flatz <david@upcs.at> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: stable <stable@kernel.org> [2.6.27, 2.6.28] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2009-01-07 10:00:13 -08:00
..
sisusbvga	USB: SISUSB2VGA driver: add 0x0711, 0x0903	2008-11-13 14:45:03 -08:00
adutux.c	USB: remove err() macro from usb misc drivers	2008-10-17 14:41:13 -07:00
appledisplay.c	USB: remove err() macro from usb misc drivers	2008-10-17 14:41:13 -07:00
berry_charge.c	USB: power availability check for berry_charge	2009-01-07 09:59:51 -08:00
cypress_cy7c63.c	USB: remove err() macro from usb misc drivers	2008-10-17 14:41:13 -07:00
cytherm.c	USB: remove err() macro from usb misc drivers	2008-10-17 14:41:13 -07:00
emi26.c	USB: emi26: fix oops on load	2009-01-07 10:00:13 -08:00
emi62.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
ftdi-elan.c
idmouse.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
iowarrior.c
isight_firmware.c
Kconfig
ldusb.c
legousbtower.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
Makefile
phidget.c
phidget.h
phidgetkit.c
phidgetmotorcontrol.c
phidgetservo.c
rio500_usb.h
rio500.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
trancevibrator.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
usb_u132.h
usblcd.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
usbled.c
usbsevseg.c
usbtest.c	USB: clean up redundant tests on unsigned	2009-01-07 09:59:49 -08:00
uss720.c	USB: remove info() macro from usb/misc drivers	2008-10-17 14:41:09 -07:00
vstusb.c	USB: vstusb: fix compiler warning on x86-64	2008-11-13 14:45:00 -08:00