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| author | Daniel Borkmann <dborkman@redhat.com> | 2014-05-23 18:43:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-23 16:48:05 -0400 |
| commit | b1fcd35cf53553a0a3ef949b05106d921446abc3 (patch) | |
| tree | 4784eb248a9705f2eae7dcb10968497f0559499f /drivers/net/ppp | |
| parent | 8556ce79d5986a87fee4c29300b4efee07c0f15e (diff) | |
| download | linux-b1fcd35cf53553a0a3ef949b05106d921446abc3.tar.gz linux-b1fcd35cf53553a0a3ef949b05106d921446abc3.tar.bz2 linux-b1fcd35cf53553a0a3ef949b05106d921446abc3.zip | |
net: filter: let unattached filters use sock_fprog_kern
The sk_unattached_filter_create() API is used by BPF filters that
are not directly attached or related to sockets, and are used in
team, ptp, xt_bpf, cls_bpf, etc. As such all users do their own
internal managment of obtaining filter blocks and thus already
have them in kernel memory and set up before calling into
sk_unattached_filter_create(). As a result, due to __user annotation
in sock_fprog, sparse triggers false positives (incorrect type in
assignment [different address space]) when filters are set up before
passing them to sk_unattached_filter_create(). Therefore, let
sk_unattached_filter_create() API use sock_fprog_kern to overcome
this issue.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ppp')
| -rw-r--r-- | drivers/net/ppp/ppp_generic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index e3923ebb693f..91d6c1272fcf 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -757,7 +757,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) err = get_filter(argp, &code); if (err >= 0) { - struct sock_fprog fprog = { + struct sock_fprog_kern fprog = { .len = err, .filter = code, }; @@ -778,7 +778,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) err = get_filter(argp, &code); if (err >= 0) { - struct sock_fprog fprog = { + struct sock_fprog_kern fprog = { .len = err, .filter = code, }; |