diff options
Diffstat (limited to 'tools/testing/selftests/ftrace')
7 files changed, 338 insertions, 1 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc new file mode 100644 index 000000000000..b89de1771655 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_btfarg.tc @@ -0,0 +1,58 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove probes with BTF arguments +# requires: dynamic_events "<argname>":README + +KPROBES= +FPROBES= + +if grep -qF "p[:[<group>/][<event>]] <place> [<args>]" README ; then + KPROBES=yes +fi +if grep -qF "f[:[<group>/][<event>]] <func-name>[%return] [<args>]" README ; then + FPROBES=yes +fi + +if [ -z "$KPROBES" -a "$FPROBES" ] ; then + exit_unsupported +fi + +echo 0 > events/enable +echo > dynamic_events + +TP=kfree + +if [ "$FPROBES" ] ; then +echo "f:fpevent $TP object" >> dynamic_events +echo "t:tpevent $TP ptr" >> dynamic_events + +grep -q "fpevent.*object=object" dynamic_events +grep -q "tpevent.*ptr=ptr" dynamic_events + +echo > dynamic_events + +echo "f:fpevent $TP "'$arg1' >> dynamic_events +grep -q "fpevent.*object=object" dynamic_events +echo > dynamic_events + +echo "f:fpevent $TP "'$arg*' >> dynamic_events +echo "t:tpevent $TP "'$arg*' >> dynamic_events + +grep -q "fpevent.*object=object" dynamic_events +grep -q "tpevent.*ptr=ptr" dynamic_events +! grep -q "tpevent.*_data" dynamic_events +fi + +echo > dynamic_events + +if [ "$KPROBES" ] ; then +echo "p:kpevent $TP object" >> dynamic_events +grep -q "kpevent.*object=object" dynamic_events + +echo > dynamic_events + +echo "p:kpevent $TP "'$arg*' >> dynamic_events +grep -q "kpevent.*object=object" dynamic_events +fi + +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc new file mode 100644 index 000000000000..dc25bcf4f9e2 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc @@ -0,0 +1,26 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove fprobe events +# requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README + +echo 0 > events/enable +echo > dynamic_events + +PLACE=$FUNCTION_FORK + +echo "f:myevent1 $PLACE" >> dynamic_events +echo "f:myevent2 $PLACE%return" >> dynamic_events + +grep -q myevent1 dynamic_events +grep -q myevent2 dynamic_events +test -d events/fprobes/myevent1 +test -d events/fprobes/myevent2 + +echo "-:myevent2" >> dynamic_events + +grep -q myevent1 dynamic_events +! grep -q myevent2 dynamic_events + +echo > dynamic_events + +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc new file mode 100644 index 000000000000..155792eaeee5 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc @@ -0,0 +1,27 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove tracepoint probe events +# requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README + +echo 0 > events/enable +echo > dynamic_events + +TRACEPOINT1=kmem_cache_alloc +TRACEPOINT2=kmem_cache_free + +echo "t:myevent1 $TRACEPOINT1" >> dynamic_events +echo "t:myevent2 $TRACEPOINT2" >> dynamic_events + +grep -q myevent1 dynamic_events +grep -q myevent2 dynamic_events +test -d events/tracepoints/myevent1 +test -d events/tracepoints/myevent2 + +echo "-:myevent2" >> dynamic_events + +grep -q myevent1 dynamic_events +! grep -q myevent2 dynamic_events + +echo > dynamic_events + +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc new file mode 100644 index 000000000000..812f5b3f6055 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/fprobe_syntax_errors.tc @@ -0,0 +1,111 @@ +#!/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' "$1" 'dynamic_events' +} + +case `uname -m` in +x86_64|i[3456]86) + REG=%ax ;; +aarch64) + REG=%x0 ;; +*) + REG=%r0 ;; +esac + +check_error 'f^100 vfs_read' # MAXACT_NO_KPROBE +check_error 'f^1a111 vfs_read' # BAD_MAXACT +check_error 'f^100000 vfs_read' # MAXACT_TOO_BIG + +check_error 'f ^non_exist_func' # BAD_PROBE_ADDR (enoent) +check_error 'f ^vfs_read+10' # BAD_PROBE_ADDR +check_error 'f:^/bar vfs_read' # NO_GROUP_NAME +check_error 'f:^12345678901234567890123456789012345678901234567890123456789012345/bar vfs_read' # GROUP_TOO_LONG + +check_error 'f:^foo.1/bar vfs_read' # BAD_GROUP_NAME +check_error 'f:^ vfs_read' # NO_EVENT_NAME +check_error 'f:foo/^12345678901234567890123456789012345678901234567890123456789012345 vfs_read' # EVENT_TOO_LONG +check_error 'f:foo/^bar.1 vfs_read' # BAD_EVENT_NAME + +check_error 'f vfs_read ^$retval' # RETVAL_ON_PROBE +check_error 'f vfs_read ^$stack10000' # BAD_STACK_NUM + +check_error 'f vfs_read ^$arg10000' # BAD_ARG_NUM + +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 +check_error 'f vfs_read%return ^$arg*' # NOFENTRY_ARGS +check_error 'f vfs_read ^hoge' # NO_BTFARG +check_error 'f kfree ^$arg10' # NO_BTFARG (exceed the number of parameters) +check_error 'f kfree%return ^$retval' # NO_RETVAL +else +check_error 'f vfs_read ^$arg*' # NOSUP_BTFARG +check_error 't kfree ^$arg*' # NOSUP_BTFARG +fi + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc new file mode 100644 index 000000000000..da117b8f1d12 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc @@ -0,0 +1,82 @@ +#!/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' "$1" 'dynamic_events' +} + +check_error 't^100 kfree' # BAD_MAXACT_TYPE + +check_error 't ^non_exist_tracepoint' # NO_TRACEPOINT +check_error 't:^/bar kfree' # NO_GROUP_NAME +check_error 't:^12345678901234567890123456789012345678901234567890123456789012345/bar kfree' # GROUP_TOO_LONG + +check_error 't:^foo.1/bar kfree' # BAD_GROUP_NAME +check_error 't:^ kfree' # NO_EVENT_NAME +check_error 't:foo/^12345678901234567890123456789012345678901234567890123456789012345 kfree' # EVENT_TOO_LONG +check_error 't:foo/^bar.1 kfree' # BAD_EVENT_NAME + +check_error 't kfree ^$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 diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_insn_boundary.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_insn_boundary.tc new file mode 100644 index 000000000000..4f7cc318f331 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_insn_boundary.tc @@ -0,0 +1,19 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2023 Akanksha J N, IBM corporation +# description: Register multiple kprobe events in a function +# requires: kprobe_events + +for i in `seq 0 255`; do + echo p $FUNCTION_FORK+${i} >> kprobe_events || continue +done + +cat kprobe_events >> $testlog + +echo 1 > events/kprobes/enable +( echo "forked" ) +echo 0 > events/kprobes/enable +echo > kprobe_events +echo "Waiting for unoptimizing & freeing" +sleep 5 +echo "Done" diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc index 9e85d3019ff0..65fbb26fd58c 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc @@ -8,7 +8,7 @@ check_error() { # command-with-error-pos-by-^ } if grep -q 'r\[maxactive\]' README; then -check_error 'p^100 vfs_read' # MAXACT_NO_KPROBE +check_error 'p^100 vfs_read' # BAD_MAXACT_TYPE check_error 'r^1a111 vfs_read' # BAD_MAXACT check_error 'r^100000 vfs_read' # MAXACT_TOO_BIG fi @@ -103,4 +103,18 @@ check_error 'p vfs_read^%hoge' # BAD_ADDR_SUFFIX check_error 'p ^vfs_read+10%return' # BAD_RETPROBE fi +# BTF arguments errors +if grep -q "<argname>" README; then +check_error 'p vfs_read args=^$arg*' # BAD_VAR_ARGS +check_error 'p vfs_read +0(^$arg*)' # BAD_VAR_ARGS +check_error 'p vfs_read $arg* ^$arg*' # DOUBLE_ARGS +check_error 'r vfs_read ^$arg*' # NOFENTRY_ARGS +check_error 'p vfs_read+8 ^$arg*' # NOFENTRY_ARGS +check_error 'p vfs_read ^hoge' # NO_BTFARG +check_error 'p kfree ^$arg10' # NO_BTFARG (exceed the number of parameters) +check_error 'r kfree ^$retval' # NO_RETVAL +else +check_error 'p vfs_read ^$arg*' # NOSUP_BTFARG +fi + exit 0 |