#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Tracepoint probe event parser error log check
# requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README
check_error() { # command-with-error-pos-by-^
ftrace_errlog_check 'trace_fprobe' "$1" 'dynamic_events'
}
check_error 't^100 kfree' # BAD_MAXACT_TYPE
check_error 't:^/bar kfree' # NO_GROUP_NAME
check_error 't:^12345678901234567890123456789012345678901234567890123456789012345/bar kfree' # GROUP_TOO_LONG
check_error 't:^foo.1/bar kfree' # BAD_GROUP_NAME
check_error 't:^ kfree' # NO_EVENT_NAME
check_error 't:foo/^12345678901234567890123456789012345678901234567890123456789012345 kfree' # EVENT_TOO_LONG
check_error 't:foo/^bar.1 kfree' # BAD_EVENT_NAME
check_error 't kfree ^$retval' # RETVAL_ON_PROBE
check_error 't kfree ^$stack10000' # BAD_STACK_NUM
check_error 't kfree ^$arg10000' # BAD_ARG_NUM
check_error 't kfree ^$none_var' # BAD_VAR
check_error 't kfree ^%rax' # BAD_VAR
check_error 't kfree ^@12345678abcde' # BAD_MEM_ADDR
check_error 't kfree ^@+10' # FILE_ON_KPROBE
grep -q "imm-value" README && \
check_error 't kfree arg1=\^x' # BAD_IMM
grep -q "imm-string" README && \
check_error 't kfree arg1=\"abcd^' # IMMSTR_NO_CLOSE
check_error 't kfree ^+0@0)' # DEREF_NEED_BRACE
check_error 't kfree ^+0ab1(@0)' # BAD_DEREF_OFFS
check_error 't kfree +0(+0(@0^)' # DEREF_OPEN_BRACE
if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then
check_error 't kfree +0(^$comm)' # COMM_CANT_DEREF
fi
check_error 't kfree ^&1' # BAD_FETCH_ARG
# We've introduced this limitation with array support
if grep -q ' <type>\\\[<array-size>\\\]' README; then
check_error 't kfree +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))' # TOO_MANY_OPS?
check_error 't kfree +0(@11):u8[10^' # ARRAY_NO_CLOSE
check_error 't kfree +0(@11):u8[10]^a' # BAD_ARRAY_SUFFIX
check_error 't kfree +0(@11):u8[^10a]' # BAD_ARRAY_NUM
check_error 't kfree +0(@11):u8[^256]' # ARRAY_TOO_BIG
fi
check_error 't kfree @11:^unknown_type' # BAD_TYPE
check_error 't kfree $stack0:^string' # BAD_STRING
check_error 't kfree @11:^b10@a/16' # BAD_BITFIELD
check_error 't kfree ^arg123456789012345678901234567890=@11' # ARG_NAME_TOO_LOG
check_error 't kfree ^=@11' # NO_ARG_NAME
check_error 't kfree ^var.1=@11' # BAD_ARG_NAME
check_error 't kfree var1=@11 ^var1=@12' # USED_ARG_NAME
check_error 't kfree ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))' # ARG_TOO_LONG
check_error 't kfree arg1=^' # NO_ARG_BODY
# multiprobe errors
if grep -q "Create/append/" README && grep -q "imm-value" README; then
echo "t:tracepoint/testevent kfree" > dynamic_events
check_error '^f:tracepoint/testevent kfree' # DIFF_PROBE_TYPE
# Explicitly use printf "%s" to not interpret \1
printf "%s" "t:tracepoints/testevent kfree abcd=\\1" > dynamic_events
check_error "t:tracepoints/testevent kfree ^bcd=\\1" # DIFF_ARG_TYPE
check_error "t:tracepoints/testevent kfree ^abcd=\\1:u8" # DIFF_ARG_TYPE
check_error "t:tracepoints/testevent kfree ^abcd=\\\"foo\"" # DIFF_ARG_TYPE
check_error "^t:tracepoints/testevent kfree abcd=\\1" # SAME_PROBE
fi
exit 0
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