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| author | Florian Westphal <fw@strlen.de> | 2024-01-15 14:11:17 +0100 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2024-01-15 14:21:53 +0100 |
| commit | 8a66de2a15943b2fbf960967cdbcbd0a148cb114 (patch) | |
| tree | 1d919baf5225a0b29b1d21aa95a2148ede3eceb1 /tests/shell | |
| parent | e08627257ecfa7dfb68a34a1c8866e7a7e012b15 (diff) | |
evaluate: error out when store needs more than one 128bit register of align fixup
Else this gives:
nft: evaluate.c:2983: stmt_evaluate_payload: Assertion `sizeof(data) * BITS_PER_BYTE >= masklen' failed.
For loads, this is already prevented via expr_evaluate_bits() which has:
if (masklen > NFT_REG_SIZE * BITS_PER_BYTE)
return expr_error(ctx->msgs, expr, "mask length %u exceeds allowed maximum of %u\n",
masklen, NFT_REG_SIZE * BITS_PER_BYTE);
But for the store path this isn't called.
The reproducer asks to store a 128 bit integer at bit offset 1, i.e.
17 bytes would need to be munged, but we can only handle up to 16 bytes
(one pseudo-register).
Fixes: 78936d50f306 ("evaluate: add support to set IPv6 non-byte header fields")
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'tests/shell')
| -rw-r--r-- | tests/shell/testcases/bogons/nft-f/payload_expr_unaligned_store | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/shell/testcases/bogons/nft-f/payload_expr_unaligned_store b/tests/shell/testcases/bogons/nft-f/payload_expr_unaligned_store new file mode 100644 index 00000000..c1358df4 --- /dev/null +++ b/tests/shell/testcases/bogons/nft-f/payload_expr_unaligned_store @@ -0,0 +1 @@ +add rule f i @th,1,128 set 1 |