diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2010-11-24 23:56:52 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-25 00:50:33 +0300 |
| commit | 50d431e8a15701b599c98afe2b464eb33c952477 (patch) | |
| tree | ae1d1108fb78ae57b6df743415abed67cb21a548 /drivers/leds | |
| parent | ea49b1669b7b405e0eb0bf877c7b7fb01f8dd19b (diff) | |
| download | linux-50d431e8a15701b599c98afe2b464eb33c952477.tar.xz | |
leds: fix bug with reading NAS SS4200 dmi code
While running randconfg with ktest.pl I stumbled upon this bug:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000003
IP: [<ffffffff815fe44f>] strstr+0x39/0x86
PGD 0
Oops: 0000 [#1] SMP
last sysfs file:
CPU 0
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.37-rc1-test+ #6 DG965MQ/
RIP: 0010:[<ffffffff815fe44f>] [<ffffffff815fe44f>] strstr+0x39/0x86
RSP: 0018:ffff8800797cbd80 EFLAGS: 00010213
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffffffffffff
RDX: 0000000000000000 RSI: ffffffff82eb7ac9 RDI: 0000000000000003
RBP: ffff8800797cbda0 R08: ffff880000000003 R09: 0000000000030725
R10: ffff88007d294c00 R11: 0000000000014c00 R12: 0000000000000020
R13: ffffffff82eb7ac9 R14: ffffffffffffffff R15: ffffffff82eb7b08
FS: 0000000000000000(0000) GS:ffff88007d200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000003 CR3: 0000000002a1d000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 1, threadinfo ffff8800797ca000, task ffff8800797d0000)
Stack:
00000000000000ba ffffffff82eb7ac9 ffffffff82eb7ab8 00000000000000ba
ffff8800797cbdf0 ffffffff81e2050f ffff8800797cbdc0 00000000815f913b
ffff8800797cbe00 ffffffff82eb7ab8 0000000000000000 0000000000000000
Call Trace:
[<ffffffff81e2050f>] dmi_matches+0x117/0x154
[<ffffffff81e205d7>] dmi_check_system+0x3d/0x8d
[<ffffffff82e1ad25>] ? nas_gpio_init+0x0/0x2c8
[<ffffffff82e1ad49>] nas_gpio_init+0x24/0x2c8
[<ffffffff820d750d>] ? wm8350_led_init+0x0/0x20
[<ffffffff82e1ad25>] ? nas_gpio_init+0x0/0x2c8
[<ffffffff810022f7>] do_one_initcall+0xab/0x1b2
[<ffffffff82da749c>] kernel_init+0x248/0x331
[<ffffffff8100e624>] kernel_thread_helper+0x4/0x10
[<ffffffff82da7254>] ? kernel_init+0x0/0x331
Found that the nas_led_whitelist dmi_system_id structure array had no
NULL end delimiter, causing the dmi_check_system() loop to read an
undefined entry.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Dave Hansen <dave@sr71.net>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-ss4200.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c index a688293abd0b..614ebebaaa28 100644 --- a/drivers/leds/leds-ss4200.c +++ b/drivers/leds/leds-ss4200.c @@ -102,6 +102,7 @@ static struct dmi_system_id __initdata nas_led_whitelist[] = { DMI_MATCH(DMI_PRODUCT_VERSION, "1.00.00") } }, + {} }; /* |