| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| # description: Fprobe event parser error log check |
| # requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README |
| |
| check_error() { # command-with-error-pos-by-^ |
| ftrace_errlog_check 'trace_fprobe' "$1" 'dynamic_events' |
| } |
| |
| case `uname -m` in |
| x86_64|i[3456]86) |
| REG=%ax ;; |
| aarch64) |
| REG=%x0 ;; |
| *) |
| REG=%r0 ;; |
| esac |
| |
| check_error 'f^100 vfs_read' # MAXACT_NO_KPROBE |
| check_error 'f^1a111 vfs_read' # BAD_MAXACT |
| check_error 'f^100000 vfs_read' # MAXACT_TOO_BIG |
| |
| check_error 'f ^non_exist_func' # BAD_PROBE_ADDR (enoent) |
| check_error 'f ^vfs_read+10' # BAD_PROBE_ADDR |
| check_error 'f:^/bar vfs_read' # NO_GROUP_NAME |
| check_error 'f:^12345678901234567890123456789012345678901234567890123456789012345/bar vfs_read' # GROUP_TOO_LONG |
| |
| check_error 'f:^foo.1/bar vfs_read' # BAD_GROUP_NAME |
| check_error 'f:^ vfs_read' # NO_EVENT_NAME |
| check_error 'f:foo/^12345678901234567890123456789012345678901234567890123456789012345 vfs_read' # EVENT_TOO_LONG |
| check_error 'f:foo/^bar.1 vfs_read' # BAD_EVENT_NAME |
| |
| check_error 'f vfs_read ^$stack10000' # BAD_STACK_NUM |
| |
| check_error 'f vfs_read ^$arg10000' # BAD_ARG_NUM |
| |
| if !grep -q 'kernel return probes support:' README; then |
| check_error 'f vfs_read $retval ^$arg1' # BAD_VAR |
| fi |
| check_error 'f vfs_read ^$none_var' # BAD_VAR |
| check_error 'f vfs_read ^'$REG # BAD_VAR |
| |
| check_error 'f vfs_read ^@12345678abcde' # BAD_MEM_ADDR |
| check_error 'f vfs_read ^@+10' # FILE_ON_KPROBE |
| |
| grep -q "imm-value" README && \ |
| check_error 'f vfs_read arg1=\^x' # BAD_IMM |
| grep -q "imm-string" README && \ |
| check_error 'f vfs_read arg1=\"abcd^' # IMMSTR_NO_CLOSE |
| |
| check_error 'f vfs_read ^+0@0)' # DEREF_NEED_BRACE |
| check_error 'f vfs_read ^+0ab1(@0)' # BAD_DEREF_OFFS |
| check_error 'f vfs_read +0(+0(@0^)' # DEREF_OPEN_BRACE |
| |
| if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then |
| check_error 'f vfs_read +0(^$comm)' # COMM_CANT_DEREF |
| fi |
| |
| check_error 'f vfs_read ^&1' # BAD_FETCH_ARG |
| |
| |
| # We've introduced this limitation with array support |
| if grep -q ' <type>\\\[<array-size>\\\]' README; then |
| check_error 'f vfs_read +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))' # TOO_MANY_OPS? |
| check_error 'f vfs_read +0(@11):u8[10^' # ARRAY_NO_CLOSE |
| check_error 'f vfs_read +0(@11):u8[10]^a' # BAD_ARRAY_SUFFIX |
| check_error 'f vfs_read +0(@11):u8[^10a]' # BAD_ARRAY_NUM |
| check_error 'f vfs_read +0(@11):u8[^256]' # ARRAY_TOO_BIG |
| fi |
| |
| check_error 'f vfs_read @11:^unknown_type' # BAD_TYPE |
| check_error 'f vfs_read $stack0:^string' # BAD_STRING |
| check_error 'f vfs_read @11:^b10@a/16' # BAD_BITFIELD |
| |
| check_error 'f vfs_read ^arg123456789012345678901234567890=@11' # ARG_NAME_TOO_LOG |
| check_error 'f vfs_read ^=@11' # NO_ARG_NAME |
| check_error 'f vfs_read ^var.1=@11' # BAD_ARG_NAME |
| check_error 'f vfs_read var1=@11 ^var1=@12' # USED_ARG_NAME |
| check_error 'f vfs_read ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))' # ARG_TOO_LONG |
| check_error 'f vfs_read arg1=^' # NO_ARG_BODY |
| |
| |
| # multiprobe errors |
| if grep -q "Create/append/" README && grep -q "imm-value" README; then |
| echo "f:fprobes/testevent $FUNCTION_FORK" > dynamic_events |
| check_error '^f:fprobes/testevent do_exit%return' # DIFF_PROBE_TYPE |
| |
| # Explicitly use printf "%s" to not interpret \1 |
| printf "%s" "f:fprobes/testevent $FUNCTION_FORK abcd=\\1" > dynamic_events |
| check_error "f:fprobes/testevent $FUNCTION_FORK ^bcd=\\1" # DIFF_ARG_TYPE |
| check_error "f:fprobes/testevent $FUNCTION_FORK ^abcd=\\1:u8" # DIFF_ARG_TYPE |
| check_error "f:fprobes/testevent $FUNCTION_FORK ^abcd=\\\"foo\"" # DIFF_ARG_TYPE |
| check_error "^f:fprobes/testevent $FUNCTION_FORK abcd=\\1" # SAME_PROBE |
| fi |
| |
| # %return suffix errors |
| check_error 'f vfs_read^%hoge' # BAD_ADDR_SUFFIX |
| |
| # BTF arguments errors |
| if grep -q "<argname>" README; then |
| check_error 'f vfs_read args=^$arg*' # BAD_VAR_ARGS |
| check_error 'f vfs_read +0(^$arg*)' # BAD_VAR_ARGS |
| check_error 'f vfs_read $arg* ^$arg*' # DOUBLE_ARGS |
| if !grep -q 'kernel return probes support:' README; then |
| check_error 'f vfs_read%return ^$arg*' # NOFENTRY_ARGS |
| fi |
| check_error 'f vfs_read ^hoge' # NO_BTFARG |
| check_error 'f kfree ^$arg10' # NO_BTFARG (exceed the number of parameters) |
| check_error 'f kfree%return ^$retval' # NO_RETVAL |
| |
| if grep -qF "<argname>[->field[->field|.field...]]" README ; then |
| check_error 'f vfs_read%return $retval->^foo' # NO_PTR_STRCT |
| check_error 'f vfs_read file->^foo' # NO_BTF_FIELD |
| check_error 'f vfs_read file^-.foo' # BAD_HYPHEN |
| check_error 'f vfs_read ^file:string' # BAD_TYPE4STR |
| fi |
| |
| else |
| check_error 'f vfs_read ^$arg*' # NOSUP_BTFARG |
| check_error 't kfree ^$arg*' # NOSUP_BTFARG |
| fi |
| |
| exit 0 |