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| author |   Dave Jiang <dave.jiang@intel.com> | 2020-12-04 09:46:49 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-05 16:47:42 +0100 |
| commit | 784b2c48ac12dcee27db001fb1a3c58c39380cb6 (patch) | |
| tree | 70ccaeb9e6c38981c8d2089ded1f91bc5fd2d6d1 /fs/kernfs/dir.c | |
| parent | of: fix linker-section match-table corruption (diff) | |
| download | wireguard-linux-784b2c48ac12dcee27db001fb1a3c58c39380cb6.tar.xz wireguard-linux-784b2c48ac12dcee27db001fb1a3c58c39380cb6.zip | |
driver core: auxiliary bus: Fix auxiliary bus shutdown null auxdrv ptr
If the probe of the auxdrv failed, the device->driver is set to NULL.
During kernel shutdown, the bus shutdown will call auxdrv->shutdown and
cause an invalid ptr dereference. Add check to make sure device->driver is
not NULL before we proceed.
Fixes: 7de3697e9cbd ("Add auxiliary bus support")
Cc: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://lore.kernel.org/r/160710040926.1889434.8840329810698403478.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/kernfs/dir.c')
0 files changed, 0 insertions, 0 deletions