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fix(monitor): system monitor loading issue with clang-llvm 18 #1897

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merged 1 commit into from
Nov 25, 2024
Merged

fix(monitor): system monitor loading issue with clang-llvm 18 #1897

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74 changes: 47 additions & 27 deletions KubeArmor/BPF/system_monitor.c
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Original file line number Diff line number Diff line change
Expand Up @@ -609,48 +609,68 @@ static __always_inline int save_context_to_buffer(bufs_t *bufs_p, void *ptr)
return 0;
}

static __always_inline int save_str_to_buffer(bufs_t *bufs_p, void *ptr)
{

static __always_inline int save_str_to_buffer(bufs_t *bufs_p, void *ptr) {
u32 *off = get_buffer_offset(DATA_BUF_TYPE);

if (off == NULL)
{
if (off == NULL) {
return -1;
}

if (*off > MAX_BUFFER_SIZE - MAX_STRING_SIZE - sizeof(int))
{
return 0; // no enough space
if (*off >= MAX_BUFFER_SIZE) {
return 0;
}

u8 type = STR_T;
bpf_probe_read(&(bufs_p->buf[*off & (MAX_BUFFER_SIZE - 1)]), 1, &type);
u32 type_pos = *off;
if (type_pos >= MAX_BUFFER_SIZE || type_pos + 1 > MAX_BUFFER_SIZE) {
return 0;
}

*off += 1;
if (MAX_BUFFER_SIZE - type_pos < (1 + sizeof(int) + 1)) {
return 0;
}

if (*off > MAX_BUFFER_SIZE - MAX_STRING_SIZE - sizeof(int))
{
return 0; // no enough space
u32 size_pos = type_pos + 1;
if (size_pos >= MAX_BUFFER_SIZE ||
size_pos + sizeof(int) > MAX_BUFFER_SIZE) {
return 0;
}

int sz = bpf_probe_read_str(&(bufs_p->buf[*off + sizeof(int)]), MAX_STRING_SIZE, ptr);
if (sz > 0)
{
if (*off > MAX_BUFFER_SIZE - sizeof(int))
{
return 0; // no enough space
}
u8 type_val = STR_T;
if (bpf_probe_read(&(bufs_p->buf[type_pos]), sizeof(u8), &type_val) < 0) {
return 0;
}

bpf_probe_read(&(bufs_p->buf[*off]), sizeof(int), &sz);
u32 str_pos = size_pos + sizeof(int);
if (str_pos >= MAX_BUFFER_SIZE || str_pos + MAX_STRING_SIZE > MAX_BUFFER_SIZE) {
return 0;
}

*off += sz + sizeof(int);
set_buffer_offset(DATA_BUF_TYPE, *off);
u32 remaining_space = MAX_BUFFER_SIZE - str_pos;
u32 read_size = remaining_space;
if (read_size > MAX_STRING_SIZE) {
read_size = MAX_STRING_SIZE;
}

return sz + sizeof(int);
if (read_size < MAX_STRING_SIZE) {
return 0;
}

return 0;
int sz = bpf_probe_read_str(&(bufs_p->buf[str_pos]), read_size, ptr);
if (sz <= 0) {
return 0;
}

if (bpf_probe_read(&(bufs_p->buf[size_pos]), sizeof(int), &sz) < 0) {
return 0;
}

u32 new_off = str_pos + sz;
if (new_off > MAX_BUFFER_SIZE) {
return 0;
}

set_buffer_offset(DATA_BUF_TYPE, new_off);

return sz + sizeof(int);
}

static __always_inline bool prepend_path(struct path *path, bufs_t *string_p, int buf_type)
Expand Down
Binary file modified KubeArmor/enforcer/bpflsm/enforcer_bpfeb.o
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Binary file modified KubeArmor/enforcer/bpflsm/enforcer_bpfel.o
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Binary file modified KubeArmor/enforcer/bpflsm/enforcer_path_bpfeb.o
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Binary file modified KubeArmor/enforcer/bpflsm/enforcer_path_bpfel.o
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Binary file modified KubeArmor/utils/bpflsmprobe/probe_bpfeb.o
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Binary file modified KubeArmor/utils/bpflsmprobe/probe_bpfel.o
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1 change: 0 additions & 1 deletion tests/go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,6 @@ require (
github.com/go-openapi/strfmt v0.23.0 // indirect
github.com/go-openapi/swag v0.23.0 // indirect
github.com/go-openapi/validate v0.24.0 // indirect
github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
Expand Down
12 changes: 0 additions & 12 deletions tests/go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -48,8 +48,6 @@ github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyT
github.com/go-errors/errors v1.5.1 h1:ZwEMSLRCapFLflTpT7NKaAc7ukJ8ZPEjzlxt8rPN8bk=
github.com/go-errors/errors v1.5.1/go.mod h1:sIVyrIiJhuEF+Pj9Ebtd6P/rEYROXFi3BopGUQ5a5Og=
github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
Expand Down Expand Up @@ -79,8 +77,6 @@ github.com/go-openapi/validate v0.24.0 h1:LdfDKwNbpB6Vn40xhTdNZAnfLECL81w+VX3Bum
github.com/go-openapi/validate v0.24.0/go.mod h1:iyeX1sEufmv3nPbBdX3ieNviWnOZaJ1+zquzJEf2BAQ=
github.com/go-quicktest/qt v1.101.0 h1:O1K29Txy5P2OK0dGo59b7b0LR6wKfIhttaAhHUyn7eI=
github.com/go-quicktest/qt v1.101.0/go.mod h1:14Bz/f7NwaXPtdYEgzsx46kqSxVwTbzVZsDC26tQJow=
github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
github.com/go-task/slim-sprig/v3 v3.0.0 h1:sUs3vkvUymDpBKi3qH1YSqBQk9+9D/8M2mN1vB6EwHI=
github.com/go-task/slim-sprig/v3 v3.0.0/go.mod h1:W848ghGpv3Qj3dhTPRyJypKRiqCdHZiAzKg9hl15HA8=
github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
Expand All @@ -101,8 +97,6 @@ github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeN
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/google/pprof v0.0.0-20240319011627-a57c5dfe54fd h1:LjW4RcTwfcqOYGmD7UpFrn1gfBZ9mgu7QN5mSeFkCog=
github.com/google/pprof v0.0.0-20240319011627-a57c5dfe54fd/go.mod h1:czg5+yv1E0ZGTi6S6vVK1mke0fV+FaUhNGcd6VRS9Ik=
github.com/google/pprof v0.0.0-20240424215950-a892ee059fd6 h1:k7nVchz72niMH6YLQNvHSdIE7iqsQxK1P41mySCvssg=
github.com/google/pprof v0.0.0-20240424215950-a892ee059fd6/go.mod h1:kf6iHlnVGwgKolg33glAes7Yg/8iWP8ukqeldJSO7jw=
github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 h1:El6M4kTTCOh6aBiKaUGG7oYTSPP8MxqL4YI3kZKwcP4=
Expand Down Expand Up @@ -176,13 +170,8 @@ github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f h1:y5//uYreIhSUg3J
github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
github.com/oklog/ulid v1.3.1 h1:EGfNDEx6MqHz8B3uNV6QAib1UR2Lm97sHi3ocA6ESJ4=
github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
github.com/onsi/ginkgo/v2 v2.14.0 h1:vSmGj2Z5YPb9JwCWT6z6ihcUvDhuXLc3sJiqd3jMKAY=
github.com/onsi/ginkgo/v2 v2.14.0/go.mod h1:JkUdW7JkN0V6rFvsHcJ478egV3XH9NxpD27Hal/PhZw=
github.com/onsi/ginkgo/v2 v2.19.1 h1:QXgq3Z8Crl5EL1WBAC98A5sEBHARrAJNzAmMxzLcRF0=
github.com/onsi/ginkgo/v2 v2.19.1/go.mod h1:O3DtEWQkPa/F7fBMgmZQKKsluAy8pd3rEQdrjkPb9zA=
github.com/onsi/gomega v1.30.0 h1:hvMK7xYz4D3HapigLTeGdId/NcfQx1VHMJc60ew99+8=
github.com/onsi/gomega v1.30.0/go.mod h1:9sxs+SwGrKI0+PWe4Fxa9tFQQBG5xSsSbMXOI8PPpoQ=
github.com/onsi/gomega v1.34.0 h1:eSSPsPNp6ZpsG8X1OVmOTxig+CblTc4AxpPBykhe2Os=
github.com/onsi/gomega v1.34.0/go.mod h1:MIKI8c+f+QLWk+hxbePD4i0LMJSExPaZOVfkoex4cAo=
github.com/opentracing/opentracing-go v1.2.1-0.20220228012449-10b1cf09e00b h1:FfH+VrHHk6Lxt9HdVS0PXzSXFyS2NbZKXv33FYPol0A=
Expand Down Expand Up @@ -251,7 +240,6 @@ github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
Expand Down
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