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1#!/bin/sh2# SPDX-License-Identifier: GPL-2.03# description: Fprobe event parser error log check4# requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README5 6check_error() { # command-with-error-pos-by-^7 ftrace_errlog_check 'trace_fprobe' "$1" 'dynamic_events'8}9 10case `uname -m` in11x86_64|i[3456]86)12 REG=%ax ;;13aarch64)14 REG=%x0 ;;15*)16 REG=%r0 ;;17esac18 19check_error 'f^100 vfs_read' # MAXACT_NO_KPROBE20check_error 'f^1a111 vfs_read' # BAD_MAXACT21check_error 'f^100000 vfs_read' # MAXACT_TOO_BIG22 23check_error 'f ^non_exist_func' # BAD_PROBE_ADDR (enoent)24check_error 'f ^vfs_read+10' # BAD_PROBE_ADDR25check_error 'f:^/bar vfs_read' # NO_GROUP_NAME26check_error 'f:^12345678901234567890123456789012345678901234567890123456789012345/bar vfs_read' # GROUP_TOO_LONG27 28check_error 'f:^foo.1/bar vfs_read' # BAD_GROUP_NAME29check_error 'f:^ vfs_read' # NO_EVENT_NAME30check_error 'f:foo/^12345678901234567890123456789012345678901234567890123456789012345 vfs_read' # EVENT_TOO_LONG31check_error 'f:foo/^bar.1 vfs_read' # BAD_EVENT_NAME32 33check_error 'f vfs_read ^$stack10000' # BAD_STACK_NUM34 35check_error 'f vfs_read ^$arg10000' # BAD_ARG_NUM36 37if !grep -q 'kernel return probes support:' README; then38check_error 'f vfs_read $retval ^$arg1' # BAD_VAR39fi40check_error 'f vfs_read ^$none_var' # BAD_VAR41check_error 'f vfs_read ^'$REG # BAD_VAR42 43check_error 'f vfs_read ^@12345678abcde' # BAD_MEM_ADDR44check_error 'f vfs_read ^@+10' # FILE_ON_KPROBE45 46grep -q "imm-value" README && \47check_error 'f vfs_read arg1=\^x' # BAD_IMM48grep -q "imm-string" README && \49check_error 'f vfs_read arg1=\"abcd^' # IMMSTR_NO_CLOSE50 51check_error 'f vfs_read ^+0@0)' # DEREF_NEED_BRACE52check_error 'f vfs_read ^+0ab1(@0)' # BAD_DEREF_OFFS53check_error 'f vfs_read +0(+0(@0^)' # DEREF_OPEN_BRACE54 55if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then56check_error 'f vfs_read +0(^$comm)' # COMM_CANT_DEREF57fi58 59check_error 'f vfs_read ^&1' # BAD_FETCH_ARG60 61 62# We've introduced this limitation with array support63if grep -q ' <type>\\\[<array-size>\\\]' README; then64check_error 'f vfs_read +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))' # TOO_MANY_OPS?65check_error 'f vfs_read +0(@11):u8[10^' # ARRAY_NO_CLOSE66check_error 'f vfs_read +0(@11):u8[10]^a' # BAD_ARRAY_SUFFIX67check_error 'f vfs_read +0(@11):u8[^10a]' # BAD_ARRAY_NUM68check_error 'f vfs_read +0(@11):u8[^256]' # ARRAY_TOO_BIG69fi70 71check_error 'f vfs_read @11:^unknown_type' # BAD_TYPE72check_error 'f vfs_read $stack0:^string' # BAD_STRING73check_error 'f vfs_read @11:^b10@a/16' # BAD_BITFIELD74 75check_error 'f vfs_read ^arg123456789012345678901234567890=@11' # ARG_NAME_TOO_LOG76check_error 'f vfs_read ^=@11' # NO_ARG_NAME77check_error 'f vfs_read ^var.1=@11' # BAD_ARG_NAME78check_error 'f vfs_read var1=@11 ^var1=@12' # USED_ARG_NAME79check_error 'f vfs_read ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))' # ARG_TOO_LONG80check_error 'f vfs_read arg1=^' # NO_ARG_BODY81 82 83# multiprobe errors84if grep -q "Create/append/" README && grep -q "imm-value" README; then85echo "f:fprobes/testevent $FUNCTION_FORK" > dynamic_events86check_error '^f:fprobes/testevent do_exit%return' # DIFF_PROBE_TYPE87 88# Explicitly use printf "%s" to not interpret \189printf "%s" "f:fprobes/testevent $FUNCTION_FORK abcd=\\1" > dynamic_events90check_error "f:fprobes/testevent $FUNCTION_FORK ^bcd=\\1" # DIFF_ARG_TYPE91check_error "f:fprobes/testevent $FUNCTION_FORK ^abcd=\\1:u8" # DIFF_ARG_TYPE92check_error "f:fprobes/testevent $FUNCTION_FORK ^abcd=\\\"foo\"" # DIFF_ARG_TYPE93check_error "^f:fprobes/testevent $FUNCTION_FORK abcd=\\1" # SAME_PROBE94fi95 96# %return suffix errors97check_error 'f vfs_read^%hoge' # BAD_ADDR_SUFFIX98 99# BTF arguments errors100if grep -q "<argname>" README; then101check_error 'f vfs_read args=^$arg*' # BAD_VAR_ARGS102check_error 'f vfs_read +0(^$arg*)' # BAD_VAR_ARGS103check_error 'f vfs_read $arg* ^$arg*' # DOUBLE_ARGS104if !grep -q 'kernel return probes support:' README; then105check_error 'f vfs_read%return ^$arg*' # NOFENTRY_ARGS106fi107check_error 'f vfs_read ^hoge' # NO_BTFARG108check_error 'f kfree ^$arg10' # NO_BTFARG (exceed the number of parameters)109check_error 'f kfree%return ^$retval' # NO_RETVAL110 111if grep -qF "<argname>[->field[->field|.field...]]" README ; then112check_error 'f vfs_read%return $retval->^foo' # NO_PTR_STRCT113check_error 'f vfs_read file->^foo' # NO_BTF_FIELD114check_error 'f vfs_read file^-.foo' # BAD_HYPHEN115check_error 'f vfs_read ^file:string' # BAD_TYPE4STR116fi117 118else119check_error 'f vfs_read ^$arg*' # NOSUP_BTFARG120check_error 't kfree ^$arg*' # NOSUP_BTFARG121fi122 123exit 0124