Migrate to linux 6.12.12 #2339
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Migrate to linux 6.12.12 #2339
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sk_alloc()->cgroup_sk_alloc() now inits default cgroup.
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Problems: 1. In the new kernel, assembly functions uniformly return from `__x86_return_thunk`. However, our assembly code uses the original `ret` instruction, so objtool in the kernel will notice this is a naked return during compilation. 2. `SYM_FUNC_START` in the new kernel will add endbr64 to the head of the assembly function, and all indirect jumps to ENDBR instructions, that is, the code snippet within the same function, will fail, but we use jump tables in the assembly function to perform indirect jumps. It will raise CET exception: https://en.wikipedia.org/wiki/X86_instruction_listings#Added_with_Intel_CET). Solutions: 1. Substitute the `ret` with `RET`, a macro in the new kernel to ensure the correct return. 2. Use endbr64 in the begining of each switch label
If `CONFIG_FORTIFY_SOURCE` is set and memset or memcpy is applied to flexible array, inside one of these functions will be called `__builtin_object_size()` that can't determine size of the flexible array that leads to compile time error.
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-Wempty-body
-Wold-style-declaration
The code like so doesn't compile -Wempty-body, becuase
if `T_DBG3` macro is empty, it leades to empty `if`
statement.
```
if (...) {
T_DBG3(...);
```
-tfw_ctlfn_state_io - Changed prototype to match new prototype of proc_handler. -tfw_sysctl_tbl removed empty struct. -Flexible arrays declared using `DECLARE_FLEX_ARRAY`.
Removed unnecessary `__restrict`, that hasn't effect on the function. Also `tbl` and `it` might points to the same structure and this is legal and used in `tfw_hpack_set_rbuf_size()`
Sleepable function must not be called in softIRQ. Use arch specific random number generator by default.
Few patches ago we changed our `ttls_time` macro to use `ktime_get_seconds()` instead of real seconds, it fits our needs, because our session storage is alive until reboot and suspension is not expected. However `x509_get_current_time()` wants to get real time, thus use `ktime_get_real_seconds()` in this case.
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