| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| # description: Kprobe event parser error log check |
| # requires: kprobe_events error_log |
| |
| check_error() { # command-with-error-pos-by-^ |
| ftrace_errlog_check 'trace_kprobe' "$1" 'kprobe_events' |
| } |
| |
| if grep -q 'r\[maxactive\]' README; then |
| check_error 'p^100 vfs_read' # MAXACT_NO_KPROBE |
| check_error 'r^1a111 vfs_read' # BAD_MAXACT |
| check_error 'r^100000 vfs_read' # MAXACT_TOO_BIG |
| fi |
| |
| check_error 'p ^non_exist_func' # BAD_PROBE_ADDR (enoent) |
| check_error 'p ^hoge-fuga' # BAD_PROBE_ADDR (bad syntax) |
| check_error 'p ^hoge+1000-1000' # BAD_PROBE_ADDR (bad syntax) |
| check_error 'r ^vfs_read+10' # BAD_RETPROBE |
| check_error 'p:^/bar vfs_read' # NO_GROUP_NAME |
| check_error 'p:^12345678901234567890123456789012345678901234567890123456789012345/bar vfs_read' # GROUP_TOO_LONG |
| |
| check_error 'p:^foo.1/bar vfs_read' # BAD_GROUP_NAME |
| check_error 'p:foo/^ vfs_read' # NO_EVENT_NAME |
| check_error 'p:foo/^12345678901234567890123456789012345678901234567890123456789012345 vfs_read' # EVENT_TOO_LONG |
| check_error 'p:foo/^bar.1 vfs_read' # BAD_EVENT_NAME |
| |
| check_error 'p vfs_read ^$retval' # RETVAL_ON_PROBE |
| check_error 'p vfs_read ^$stack10000' # BAD_STACK_NUM |
| |
| if grep -q '$arg<N>' README; then |
| check_error 'p vfs_read ^$arg10000' # BAD_ARG_NUM |
| fi |
| |
| check_error 'p vfs_read ^$none_var' # BAD_VAR |
| |
| check_error 'p vfs_read ^%none_reg' # BAD_REG_NAME |
| check_error 'p vfs_read ^@12345678abcde' # BAD_MEM_ADDR |
| check_error 'p vfs_read ^@+10' # FILE_ON_KPROBE |
| |
| grep -q "imm-value" README && \ |
| check_error 'p vfs_read arg1=\^x' # BAD_IMM |
| grep -q "imm-string" README && \ |
| check_error 'p vfs_read arg1=\"abcd^' # IMMSTR_NO_CLOSE |
| |
| check_error 'p vfs_read ^+0@0)' # DEREF_NEED_BRACE |
| check_error 'p vfs_read ^+0ab1(@0)' # BAD_DEREF_OFFS |
| check_error 'p vfs_read +0(+0(@0^)' # DEREF_OPEN_BRACE |
| |
| if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then |
| check_error 'p vfs_read +0(^$comm)' # COMM_CANT_DEREF |
| fi |
| |
| check_error 'p vfs_read ^&1' # BAD_FETCH_ARG |
| |
| |
| # We've introduced this limitation with array support |
| if grep -q ' <type>\\\[<array-size>\\\]' README; then |
| check_error 'p vfs_read +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))' # TOO_MANY_OPS? |
| check_error 'p vfs_read +0(@11):u8[10^' # ARRAY_NO_CLOSE |
| check_error 'p vfs_read +0(@11):u8[10]^a' # BAD_ARRAY_SUFFIX |
| check_error 'p vfs_read +0(@11):u8[^10a]' # BAD_ARRAY_NUM |
| check_error 'p vfs_read +0(@11):u8[^256]' # ARRAY_TOO_BIG |
| fi |
| |
| check_error 'p vfs_read @11:^unknown_type' # BAD_TYPE |
| check_error 'p vfs_read $stack0:^string' # BAD_STRING |
| check_error 'p vfs_read @11:^b10@a/16' # BAD_BITFIELD |
| |
| check_error 'p vfs_read ^arg123456789012345678901234567890=@11' # ARG_NAME_TOO_LOG |
| check_error 'p vfs_read ^=@11' # NO_ARG_NAME |
| check_error 'p vfs_read ^var.1=@11' # BAD_ARG_NAME |
| check_error 'p vfs_read var1=@11 ^var1=@12' # USED_ARG_NAME |
| check_error 'p vfs_read ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))' # ARG_TOO_LONG |
| check_error 'p vfs_read arg1=^' # NO_ARG_BODY |
| |
| # instruction boundary check is valid on x86 (at this moment) |
| case $(uname -m) in |
| x86_64|i[3456]86) |
| echo 'p vfs_read' > kprobe_events |
| if grep -q FTRACE ../kprobes/list ; then |
| check_error 'p ^vfs_read+3' # BAD_INSN_BNDRY (only if function-tracer is enabled) |
| fi |
| ;; |
| esac |
| |
| # multiprobe errors |
| if grep -q "Create/append/" README && grep -q "imm-value" README; then |
| echo 'p:kprobes/testevent kernel_clone' > kprobe_events |
| check_error '^r:kprobes/testevent do_exit' # DIFF_PROBE_TYPE |
| |
| # Explicitly use printf "%s" to not interpret \1 |
| printf "%s" 'p:kprobes/testevent kernel_clone abcd=\1' > kprobe_events |
| check_error 'p:kprobes/testevent kernel_clone ^bcd=\1' # DIFF_ARG_TYPE |
| check_error 'p:kprobes/testevent kernel_clone ^abcd=\1:u8' # DIFF_ARG_TYPE |
| check_error 'p:kprobes/testevent kernel_clone ^abcd=\"foo"' # DIFF_ARG_TYPE |
| check_error '^p:kprobes/testevent kernel_clone abcd=\1' # SAME_PROBE |
| fi |
| |
| exit 0 |
