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Add extensive set of tests for bpf_call verification logic: calls: basic sanity calls: using r0 returned by callee calls: callee is using r1 calls: callee using args1 calls: callee using wrong args2 calls: callee using two args calls: callee changing pkt pointers calls: two calls with args calls: two calls with bad jump calls: recursive call. test1 calls: recursive call. test2 calls: unreachable code calls: invalid call calls: jumping across function bodies. test1 calls: jumping across function bodies. test2 calls: call without exit calls: call into middle of ld_imm64 calls: call into middle of other call calls: two calls with bad fallthrough calls: two calls with stack read calls: two calls with stack write calls: spill into caller stack frame calls: two calls with stack write and void return calls: ambiguous return value calls: two calls that return map_value calls: two calls that return map_value with bool condition calls: two calls that return map_value with incorrect bool check calls: two calls that receive map_value via arg=ptr_stack_of_caller. test1 calls: two calls that receive map_value via arg=ptr_stack_of_caller. test2 calls: two jumps that receive map_value via arg=ptr_stack_of_jumper. test3 calls: two calls that receive map_value_ptr_or_null via arg. test1 calls: two calls that receive map_value_ptr_or_null via arg. test2 calls: pkt_ptr spill into caller stack Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.