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llvm-project/compiler-rt/test/msan/chained_origin_limits.cpp

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[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
// This test program creates a very large number of unique histories.
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// Heap origin.
[MSan] Remove explicit -m64 from RUN lines. Target-specific flags should usually be configured by CMake/lit. llvm-svn: 230999
2015-03-03 03:34:27 +08:00
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
// RUN: MSAN_OPTIONS=origin_history_size=2 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK2 < %t.out
// RUN: MSAN_OPTIONS=origin_history_per_stack_limit=1 not %run %t >%t.out 2>&1
[MSAN][MIPS] Fix fork.cc test on MIPS Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers. Reviewed by eugenis. Differential: D23107 llvm-svn: 289027
2016-12-08 14:30:58 +08:00
// RUN: FileCheck %s --check-prefix=CHECK-PER-STACK --check-prefix=CHECK-%short-stack < %t.out
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
[msan] Make chained_origin_limits test faster. llvm-svn: 217361
2014-09-08 17:04:45 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7,origin_history_per_stack_limit=0 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
[msan] Fix origin_history_per_stack_limit=0 behavior. It disables the per-stack limit. llvm-svn: 217030
2014-09-03 20:15:59 +08:00
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// Stack origin.
[MSan] Remove explicit -m64 from RUN lines. Target-specific flags should usually be configured by CMake/lit. llvm-svn: 230999
2015-03-03 03:34:27 +08:00
// RUN: %clangxx_msan -DSTACK -fsanitize-memory-track-origins=2 -O3 %s -o %t
[msan] Fix bad interaction between with-calls mode and chained origin tracking. Origin history should only be recorded for uninitialized values, because it is meaningless otherwise. This change moves __msan_chain_origin to the runtime library side and makes it conditional on the corresponding shadow value. Previous code was correct, but _very_ inefficient. llvm-svn: 211700
2014-06-25 22:41:57 +08:00
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
// RUN: MSAN_OPTIONS=origin_history_size=2 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK2 < %t.out
// RUN: MSAN_OPTIONS=origin_history_per_stack_limit=1 not %run %t >%t.out 2>&1
[MSAN][MIPS] Fix fork.cc test on MIPS Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers. Reviewed by eugenis. Differential: D23107 llvm-svn: 289027
2016-12-08 14:30:58 +08:00
// RUN: FileCheck %s --check-prefix=CHECK-PER-STACK --check-prefix=CHECK-%short-stack < %t.out
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
[msan] Make chained_origin_limits test faster. llvm-svn: 217361
2014-09-08 17:04:45 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7,origin_history_per_stack_limit=0 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
[msan] Fix origin_history_per_stack_limit=0 behavior. It disables the per-stack limit. llvm-svn: 217030
2014-09-03 20:15:59 +08:00
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// Heap origin, with calls.
[MSan] Remove explicit -m64 from RUN lines. Target-specific flags should usually be configured by CMake/lit. llvm-svn: 230999
2015-03-03 03:34:27 +08:00
// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t
[msan] Fix bad interaction between with-calls mode and chained origin tracking. Origin history should only be recorded for uninitialized values, because it is meaningless otherwise. This change moves __msan_chain_origin to the runtime library side and makes it conditional on the corresponding shadow value. Previous code was correct, but _very_ inefficient. llvm-svn: 211700
2014-06-25 22:41:57 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
// RUN: MSAN_OPTIONS=origin_history_size=2 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK2 < %t.out
// RUN: MSAN_OPTIONS=origin_history_per_stack_limit=1 not %run %t >%t.out 2>&1
[MSAN][MIPS] Fix fork.cc test on MIPS Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers. Reviewed by eugenis. Differential: D23107 llvm-svn: 289027
2016-12-08 14:30:58 +08:00
// RUN: FileCheck %s --check-prefix=CHECK-PER-STACK --check-prefix=CHECK-%short-stack < %t.out
[msan] Fix bad interaction between with-calls mode and chained origin tracking. Origin history should only be recorded for uninitialized values, because it is meaningless otherwise. This change moves __msan_chain_origin to the runtime library side and makes it conditional on the corresponding shadow value. Previous code was correct, but _very_ inefficient. llvm-svn: 211700
2014-06-25 22:41:57 +08:00
[msan] Make chained_origin_limits test faster. llvm-svn: 217361
2014-09-08 17:04:45 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7,origin_history_per_stack_limit=0 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
[msan] Fix origin_history_per_stack_limit=0 behavior. It disables the per-stack limit. llvm-svn: 217030
2014-09-03 20:15:59 +08:00
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// Stack origin, with calls.
[MSan] Remove explicit -m64 from RUN lines. Target-specific flags should usually be configured by CMake/lit. llvm-svn: 230999
2015-03-03 03:34:27 +08:00
// RUN: %clangxx_msan -DSTACK -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
// RUN: MSAN_OPTIONS=origin_history_size=2 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK2 < %t.out
// RUN: MSAN_OPTIONS=origin_history_per_stack_limit=1 not %run %t >%t.out 2>&1
[MSAN][MIPS] Fix fork.cc test on MIPS Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers. Reviewed by eugenis. Differential: D23107 llvm-svn: 289027
2016-12-08 14:30:58 +08:00
// RUN: FileCheck %s --check-prefix=CHECK-PER-STACK --check-prefix=CHECK-%short-stack < %t.out
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
[msan] Make chained_origin_limits test faster. llvm-svn: 217361
2014-09-08 17:04:45 +08:00
// RUN: MSAN_OPTIONS=origin_history_size=7,origin_history_per_stack_limit=0 not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK7 < %t.out
[msan] Fix origin_history_per_stack_limit=0 behavior. It disables the per-stack limit. llvm-svn: 217030
2014-09-03 20:15:59 +08:00
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static char *buf, *cur, *end;
void init() {
buf = new char[1000];
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
#ifdef STACK
char stackbuf[1000];
char *volatile p = stackbuf;
memcpy(buf, p, 1000);
#endif
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
cur = buf;
end = buf + 1000;
}
void line_flush() {
char *p;
for (p = cur - 1; p >= buf; --p)
if (*p == '\n')
break;
if (p >= buf) {
size_t write_sz = p - buf + 1;
// write(2, buf, write_sz);
memmove(buf, p + 1, end - p - 1);
cur -= write_sz;
}
}
void buffered_write(const char *p, size_t sz) {
while (sz > 0) {
size_t copy_sz = end - cur;
if (sz < copy_sz) copy_sz = sz;
memcpy(cur, p, copy_sz);
cur += copy_sz;
sz -= copy_sz;
line_flush();
}
}
void fn1() {
buffered_write("a\n", 2);
}
void fn2() {
buffered_write("a\n", 2);
}
void fn3() {
buffered_write("a\n", 2);
}
int main(void) {
init();
for (int i = 0; i < 2000; ++i) {
fn1();
fn2();
fn3();
}
return buf[50];
}
// CHECK7: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK7-NOT: Uninitialized value was stored to memory at
// CHECK7: Uninitialized value was stored to memory at
// CHECK7-NOT: Uninitialized value was stored to memory at
// CHECK7: Uninitialized value was stored to memory at
// CHECK7-NOT: Uninitialized value was stored to memory at
// CHECK7: Uninitialized value was stored to memory at
// CHECK7-NOT: Uninitialized value was stored to memory at
// CHECK7: Uninitialized value was stored to memory at
// CHECK7-NOT: Uninitialized value was stored to memory at
// CHECK7: Uninitialized value was stored to memory at
// CHECK7-NOT: Uninitialized value was stored to memory at
// CHECK7: Uninitialized value was stored to memory at
// CHECK7-NOT: Uninitialized value was stored to memory at
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// CHECK7: Uninitialized value was created
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
// CHECK2: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK2-NOT: Uninitialized value was stored to memory at
// CHECK2: Uninitialized value was stored to memory at
// CHECK2-NOT: Uninitialized value was stored to memory at
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// CHECK2: Uninitialized value was created
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
[MSAN][MIPS] Fix fork.cc test on MIPS Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers. Reviewed by eugenis. Differential: D23107 llvm-svn: 289027
2016-12-08 14:30:58 +08:00
// For architectures with short stack all the stacks in the chain are same
// because the stack trace does not contain frames upto the functions fn1, fn2,
// fn3 from where the uninitialized stores actually originate. Since we report
// uninitialized value store once for each stack frame
// (origin_history_per_stack_limit = 1) we expect only one instance of
// "Uninitialized value was stored to memory at".
[msan] Chained origins re-design. Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
2014-05-21 17:02:13 +08:00
// CHECK-PER-STACK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK-PER-STACK: Uninitialized value was stored to memory at
[MSAN][MIPS] Fix fork.cc test on MIPS Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers. Reviewed by eugenis. Differential: D23107 llvm-svn: 289027
2016-12-08 14:30:58 +08:00
// CHECK-SHORT-STACK: in __msan_memmove
// CHECK-FULL-STACK: in fn3
// CHECK-FULL-STACK: Uninitialized value was stored to memory at
// CHECK-FULL-STACK: in fn2
// CHECK-FULL-STACK: Uninitialized value was stored to memory at
// CHECK-FULL-STACK: in fn1
[msan] Limit stack origin chain length. Stack origins were created with unlimited length by mistake. llvm-svn: 212036
2014-06-30 19:22:42 +08:00
// CHECK-PER-STACK: Uninitialized value was created
[msan] Fix origin_history_per_stack_limit=0 behavior. It disables the per-stack limit. llvm-svn: 217030
2014-09-03 20:15:59 +08:00
// CHECK-UNLIMITED: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was stored to memory at
// CHECK-UNLIMITED: Uninitialized value was created