diff options
| author |   Eric Dumazet <edumazet@google.com> | 2022-05-09 20:57:41 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-05-11 12:44:16 +0100 |
| commit | eeee4b77dc52b9128ee450c110caeb92ce3f3f9c (patch) | |
| tree | 50766a68454ddebad5e7adddf4a236c72e6f5459 /net/core/dev.c | |
| parent | net: remove two BUG() from skb_checksum_help() (diff) | |
| download | linux-dev-eeee4b77dc52b9128ee450c110caeb92ce3f3f9c.tar.xz linux-dev-eeee4b77dc52b9128ee450c110caeb92ce3f3f9c.zip | |
net: add more debug info in skb_checksum_help()
This is a followup of previous patch.
Dumping the stack trace is a good start, but printing
basic skb information is probably better.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 918548c73872..91b7e7784da9 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3266,15 +3266,17 @@ int skb_checksum_help(struct sk_buff *skb) offset = skb_checksum_start_offset(skb); ret = -EINVAL; - if (WARN_ON_ONCE(offset >= skb_headlen(skb))) + if (WARN_ON_ONCE(offset >= skb_headlen(skb))) { + DO_ONCE_LITE(skb_dump, KERN_ERR, skb, false); goto out; - + } csum = skb_checksum(skb, offset, skb->len - offset, 0); offset += skb->csum_offset; - if (WARN_ON_ONCE(offset + sizeof(__sum16) > skb_headlen(skb))) + if (WARN_ON_ONCE(offset + sizeof(__sum16) > skb_headlen(skb))) { + DO_ONCE_LITE(skb_dump, KERN_ERR, skb, false); goto out; - + } ret = skb_ensure_writable(skb, offset + sizeof(__sum16)); if (ret) goto out; |