diff options
| author | Dan Carpenter <error27@gmail.com> | 2010-05-25 01:33:49 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 19:07:08 +0400 |
| commit | 6ba8bcd457d9fc793ac9435aa2e4138f571d4ec5 (patch) | |
| tree | d562dedc503e3f67d80517494b53afa651418bb8 /drivers/lguest | |
| parent | 72cc8e51cfdde9007adab7d841ac4113b05b2c56 (diff) | |
| download | linux-6ba8bcd457d9fc793ac9435aa2e4138f571d4ec5.tar.xz | |
rtc-cmos: do dev_set_drvdata() earlier in the initialization
The bug is an oops when dev_get_drvdata() returned null in
cmos_update_irq_enable(). The call tree looks like this:
rtc_dev_ioctl()
=> rtc_update_irq_enable()
=> cmos_update_irq_enable()
It's caused by a race condition in the module initialization. It is
rtc_device_register() which makes the ioctl operations live so I moved
the call to dev_set_drvdata() before the call to rtc_device_register().
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=15963
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Tested-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Malte Schroder <maltesch@gmx.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
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/lguest')
0 files changed, 0 insertions, 0 deletions