On Mon, Dec 5, 2016 at 9:00 PM, Shuah Khan <shuahkh@xxxxxxxxxxxxxxx> wrote: > Hi Andrey, > > On 12/05/2016 12:56 PM, Shuah Khan wrote: >> vhci_hcd calls sysfs_create_group() with dynamically allocated sysfs >> attributes triggering the lock-class key not persistent warning. Call >> sysfs_attr_init() for dynamically allocated sysfs attributes to fix it. >> >> vhci_hcd vhci_hcd: USB/IP Virtual Host Controller >> vhci_hcd vhci_hcd: new USB bus registered, assigned bus number 2 >> BUG: key ffff88006a7e8d18 not in .data! >> ------------[ cut here ]------------ >> WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3131 >> lockdep_init_map+0x60c/0x770 >> DEBUG_LOCKS_WARN_ON(1)[ 1.567044] Modules linked in: >> CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc7+ #58 >> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 >> ffff88006bce6eb8 ffffffff81f96c8a ffffffff00000a02 1ffff1000d79cd6a >> ffffed000d79cd62 000000046bce6ed8 0000000041b58ab3 ffffffff8598af40 >> ffffffff81f969f8 0000000000000000 0000000041b58ab3 0000000000000200 >> Call Trace: >> [< inline >] __dump_stack lib/dump_stack.c:15 >> [<ffffffff81f96c8a>] dump_stack+0x292/0x398 lib/dump_stack.c:51 >> [<ffffffff812b808f>] __warn+0x19f/0x1e0 kernel/panic.c:550 >> [<ffffffff812b8195>] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565 >> [<ffffffff813f3efc>] lockdep_init_map+0x60c/0x770 kernel/locking/lockdep.c:3131 >> [<ffffffff819e43d4>] __kernfs_create_file+0x114/0x2a0 fs/kernfs/file.c:954 >> [<ffffffff819e68f5>] sysfs_add_file_mode_ns+0x225/0x520 fs/sysfs/file.c:305 >> [< inline >] create_files fs/sysfs/group.c:64 >> [<ffffffff819e8a89>] internal_create_group+0x239/0x8f0 fs/sysfs/group.c:134 >> [<ffffffff819e915f>] sysfs_create_group+0x1f/0x30 fs/sysfs/group.c:156 >> [<ffffffff8323de24>] vhci_start+0x5b4/0x7a0 drivers/usb/usbip/vhci_hcd.c:978 >> [<ffffffff82c907ca>] usb_add_hcd+0x8da/0x1c60 drivers/usb/core/hcd.c:2867 >> [<ffffffff8323bc57>] vhci_hcd_probe+0x97/0x130 >> drivers/usb/usbip/vhci_hcd.c:1103 >> --- >> --- >> ---[ end trace c33c7b202cf3aac8 ]--- >> >> Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx> >> Reported-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > > Here is the fix. Fixed the warning I reproduced on my system. > Let me know if it works for you. Hi Shuah, This fixes the warning I've been seeing. Thanks! > > thanks, > -- Shuah > >> --- >> drivers/usb/usbip/vhci_sysfs.c | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/drivers/usb/usbip/vhci_sysfs.c b/drivers/usb/usbip/vhci_sysfs.c >> index c404017..b96e5b1 100644 >> --- a/drivers/usb/usbip/vhci_sysfs.c >> +++ b/drivers/usb/usbip/vhci_sysfs.c >> @@ -361,6 +361,7 @@ static void set_status_attr(int id) >> status->attr.attr.name = status->name; >> status->attr.attr.mode = S_IRUGO; >> status->attr.show = status_show; >> + sysfs_attr_init(&status->attr.attr); >> } >> >> static int init_status_attrs(void) >> > -- 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
