| commit | 4fc061ed7a864acce39461173eee3652d89c7d60 | |
| author | Dan Carpenter <dan.carpenter@oracle.com> | |
| Tue, 15 May 2012 12:23:45 +0000 (15 15:23 +0300) | ||
| committer | Dan Carpenter <dan.carpenter@oracle.com> | |
| Tue, 15 May 2012 12:23:45 +0000 (15 15:23 +0300) | ||
| tree | 0dbe7f62bcbf210f3c2ea34ef754dc51278b79dd | treesnapshot (tar.gz zip) |
| parent | 32f33bfd49aa7439e63a0c0e8de6946f776d7285 | commitdiff |
check_kernel: ERR_PTR() returns non-NULL (mostly)
If you have p = ERR_PTR(x) then this says that if we know the value of
x then p is the same value. If we don't know the value of x then it's
some error code.
Having this information eliminates some NULL dereference false positives.
The plan is that eventually everything will be sorted into stack pointers,
heap pointers, null pointers or error pointers. Maybe users space
pointers?
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
If you have p = ERR_PTR(x) then this says that if we know the value of
x then p is the same value. If we don't know the value of x then it's
some error code.
Having this information eliminates some NULL dereference false positives.
The plan is that eventually everything will be sorted into stack pointers,
heap pointers, null pointers or error pointers. Maybe users space
pointers?
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| check_kernel.c | diffblobblamehistory |