133549Sjkh#!/bin/sh 233549Sjkh# SPDX-License-Identifier: GPL-2.0 3330449Seadler# description: Kprobe event parser error log check 4330449Seadler# requires: kprobe_events error_log 5330449Seadler 62892Sdfrcheck_error() { # command-with-error-pos-by-^ 72892Sdfr ftrace_errlog_check 'trace_kprobe' "$1" 'kprobe_events' 82892Sdfr} 92892Sdfr 102892Sdfrif grep -q 'r\[maxactive\]' README; then 112892Sdfrcheck_error 'p^100 vfs_read' # BAD_MAXACT_TYPE 122892Sdfrcheck_error 'r^1a111 vfs_read' # BAD_MAXACT 132892Sdfrcheck_error 'r^100000 vfs_read' # MAXACT_TOO_BIG 142892Sdfrfi 152892Sdfr 162892Sdfrcheck_error 'p ^non_exist_func' # BAD_PROBE_ADDR (enoent) 172892Sdfrcheck_error 'p ^hoge-fuga' # BAD_PROBE_ADDR (bad syntax) 182892Sdfrcheck_error 'p ^hoge+1000-1000' # BAD_PROBE_ADDR (bad syntax) 192892Sdfrcheck_error 'r ^vfs_read+10' # BAD_RETPROBE 202892Sdfrcheck_error 'p:^/bar vfs_read' # NO_GROUP_NAME 212892Sdfrcheck_error 'p:^12345678901234567890123456789012345678901234567890123456789012345/bar vfs_read' # GROUP_TOO_LONG 222892Sdfr 232892Sdfrcheck_error 'p:^foo.1/bar vfs_read' # BAD_GROUP_NAME 242892Sdfrcheck_error 'p:^ vfs_read' # NO_EVENT_NAME 252892Sdfrcheck_error 'p:foo/^12345678901234567890123456789012345678901234567890123456789012345 vfs_read' # EVENT_TOO_LONG 262892Sdfrcheck_error 'p:foo/^bar.1 vfs_read' # BAD_EVENT_NAME 272892Sdfr 282892Sdfrcheck_error 'p vfs_read ^$retval' # RETVAL_ON_PROBE 292892Sdfrcheck_error 'p vfs_read ^$stack10000' # BAD_STACK_NUM 302892Sdfr 312892Sdfrif grep -q '$arg<N>' README; then 322892Sdfrcheck_error 'p vfs_read ^$arg10000' # BAD_ARG_NUM 332892Sdfrfi 342892Sdfr 352892Sdfrcheck_error 'p vfs_read ^$none_var' # BAD_VAR 3615771Swollman 3750476Spetercheck_error 'p vfs_read ^%none_reg' # BAD_REG_NAME 382892Sdfrcheck_error 'p vfs_read ^@12345678abcde' # BAD_MEM_ADDR 392892Sdfrcheck_error 'p vfs_read ^@+10' # FILE_ON_KPROBE 402892Sdfr 412892Sdfrgrep -q "imm-value" README && \ 422892Sdfrcheck_error 'p vfs_read arg1=\^x' # BAD_IMM 43120492Sfjoegrep -q "imm-string" README && \ 44121363Strhodescheck_error 'p vfs_read arg1=\"abcd^' # IMMSTR_NO_CLOSE 45121429Strhodes 4623335Sbdecheck_error 'p vfs_read ^+0@0)' # DEREF_NEED_BRACE 472892Sdfrcheck_error 'p vfs_read ^+0ab1(@0)' # BAD_DEREF_OFFS 482892Sdfrcheck_error 'p vfs_read +0(+0(@0^)' # DEREF_OPEN_BRACE 49340953Seugen 502892Sdfrif grep -A1 "fetcharg:" README | grep -q '\$comm' ; then 5133761Sachecheck_error 'p vfs_read +0(^$comm)' # COMM_CANT_DEREF 522892Sdfrfi 532892Sdfr 5455613Sachecheck_error 'p vfs_read ^&1' # BAD_FETCH_ARG 5555613Sache 562892Sdfr 572892Sdfr# We've introduced this limitation with array support 5815771Swollmanif grep -q ' <type>\\\[<array-size>\\\]' README; then 592892Sdfrcheck_error 'p vfs_read +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))' # TOO_MANY_OPS? 60121429Strhodescheck_error 'p vfs_read +0(@11):u8[10^' # ARRAY_NO_CLOSE 612892Sdfrcheck_error 'p vfs_read +0(@11):u8[10]^a' # BAD_ARRAY_SUFFIX 622892Sdfrcheck_error 'p vfs_read +0(@11):u8[^10a]' # BAD_ARRAY_NUM 6392882Simpcheck_error 'p vfs_read +0(@11):u8[^256]' # ARRAY_TOO_BIG 6492882Simpfi 6592882Simp 6692882Simpcheck_error 'p vfs_read @11:^unknown_type' # BAD_TYPE 67152809Savatarcheck_error 'p vfs_read $stack0:^string' # BAD_STRING 682892Sdfrcheck_error 'p vfs_read @11:^b10@a/16' # BAD_BITFIELD 692892Sdfr 70121373Strhodescheck_error 'p vfs_read ^arg123456789012345678901234567890=@11' # ARG_NAME_TOO_LOG 712892Sdfrcheck_error 'p vfs_read ^=@11' # NO_ARG_NAME 72152416Smaximcheck_error 'p vfs_read ^var.1=@11' # BAD_ARG_NAME 73152416Smaximcheck_error 'p vfs_read var1=@11 ^var1=@12' # USED_ARG_NAME 742892Sdfrcheck_error 'p vfs_read ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))' # ARG_TOO_LONG 75247856Sjkimcheck_error 'p vfs_read arg1=^' # NO_ARG_BODY 76120492Sfjoe 77152362Srodrigc# instruction boundary check is valid on x86 (at this moment) 78166326Srodrigccase $(uname -m) in 79152362Srodrigc x86_64|i[3456]86) 80152362Srodrigc echo 'p vfs_read' > kprobe_events 81152362Srodrigc if grep -q FTRACE ../kprobes/list ; then 82152362Srodrigc check_error 'p ^vfs_read+3' # BAD_INSN_BNDRY (only if function-tracer is enabled) 83152362Srodrigc fi 842892Sdfr ;; 85247856Sjkimesac 862892Sdfr 87152731Savatar# multiprobe errors 882892Sdfrif grep -q "Create/append/" README && grep -q "imm-value" README; then 8933549Sjkhecho "p:kprobes/testevent $FUNCTION_FORK" > kprobe_events 90152362Srodrigccheck_error '^r:kprobes/testevent do_exit' # DIFF_PROBE_TYPE 9133549Sjkh 9233549Sjkh# Explicitly use printf "%s" to not interpret \1 93152362Srodrigcprintf "%s" "p:kprobes/testevent $FUNCTION_FORK abcd=\\1" > kprobe_events 9433549Sjkhcheck_error "p:kprobes/testevent $FUNCTION_FORK ^bcd=\\1" # DIFF_ARG_TYPE 9533549Sjkhcheck_error "p:kprobes/testevent $FUNCTION_FORK ^abcd=\\1:u8" # DIFF_ARG_TYPE 96152731Savatarcheck_error "p:kprobes/testevent $FUNCTION_FORK ^abcd=\\\"foo\"" # DIFF_ARG_TYPE 9733549Sjkhcheck_error "^p:kprobes/testevent $FUNCTION_FORK abcd=\\1" # SAME_PROBE 982892Sdfrfi 99152362Srodrigc 1002892Sdfr# %return suffix errors 1012892Sdfrif grep -q "place (kretprobe): .*%return.*" README; then 1022892Sdfrcheck_error 'p vfs_read^%hoge' # BAD_ADDR_SUFFIX 103152362Srodrigccheck_error 'p ^vfs_read+10%return' # BAD_RETPROBE 1042892Sdfrfi 1052892Sdfr 1062892Sdfr# BTF arguments errors 107152362Srodrigcif grep -q "<argname>" README; then 1082892Sdfrcheck_error 'p vfs_read args=^$arg*' # BAD_VAR_ARGS 1092892Sdfrcheck_error 'p vfs_read +0(^$arg*)' # BAD_VAR_ARGS 110118837Strhodescheck_error 'p vfs_read $arg* ^$arg*' # DOUBLE_ARGS 111152362Srodrigcif !grep -q 'kernel return probes support:' README; then 112118837Strhodescheck_error 'r vfs_read ^$arg*' # NOFENTRY_ARGS 113118837Strhodesfi 114152362Srodrigccheck_error 'p vfs_read+8 ^$arg*' # NOFENTRY_ARGS 115152362Srodrigccheck_error 'p vfs_read ^hoge' # NO_BTFARG 116120492Sfjoecheck_error 'p kfree ^$arg10' # NO_BTFARG (exceed the number of parameters) 117120492Sfjoecheck_error 'r kfree ^$retval' # NO_RETVAL 118120492Sfjoeelse 119120492Sfjoecheck_error 'p vfs_read ^$arg*' # NOSUP_BTFARG 120120492Sfjoefi 121152362Srodrigc 122152362Srodrigcexit 0 123152974Savatar