Add `--enable-asan` and `--enable-ubsan` switches

`configure` now accepts `--enable-asan` and `--enable-ubsan` switches
which results in passing `-fsanitize=address`
and `-fsanitize=undefined`, respectively, to the compiler. Those
flags are enabled in GitHub workflows for ZTS and zloop. Errors
reported by both instrumentations are corrected, except for:

- Memory leak reporting is (temporarily) suppressed. The cost of
  fixing them is relatively high compared to the gains.

- Checksum computing functions in `module/zcommon/zfs_fletcher*`
  have UBSan errors suppressed. It is completely impractical
  to enforce 64-byte payload alignment there due to performance
  impact.

- There's no ASan heap poisoning in `module/zstd/lib/zstd.c`. A custom
  memory allocator is used there rendering that measure
  unfeasible.

- Memory leaks detection has to be suppressed for `cmd/zvol_id`.
  `zvol_id` is run by udev with the help of `ptrace(2)`. Tracing is
  incompatible with memory leaks detection.

Reviewed-by: Ahelenia Ziemiańska <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: szubersk <[email protected]>
Closes #12928 

3 files changed, 3 insertions, 3 deletions

diff --git a/.github/workflows/zfs-tests-functional.yml b/.github/workflows/zfs-tests-functional.yml
index 40d03d25d..ba3b2e11c 100644
--- a/.github/workflows/zfs-tests-functional.yml
+++ b/.github/workflows/zfs-tests-functional.yml
@@ -32,7 +32,7 @@ jobs:
         sh autogen.sh
     - name: Configure
       run: |
-        ./configure --enable-debug --enable-debuginfo
+        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
     - name: Make
       run: |
         make --no-print-directory -s pkg-utils pkg-kmod
diff --git a/.github/workflows/zfs-tests-sanity.yml b/.github/workflows/zfs-tests-sanity.yml
index d1dc0e88c..abe7974dd 100644
--- a/.github/workflows/zfs-tests-sanity.yml
+++ b/.github/workflows/zfs-tests-sanity.yml
@@ -28,7 +28,7 @@ jobs:
         sh autogen.sh
     - name: Configure
       run: |
-        ./configure --enable-debug --enable-debuginfo
+        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
     - name: Make
       run: |
         make --no-print-directory -s pkg-utils pkg-kmod
diff --git a/.github/workflows/zloop.yml b/.github/workflows/zloop.yml
index 5c1b9bd1c..0638bbe58 100644
--- a/.github/workflows/zloop.yml
+++ b/.github/workflows/zloop.yml
@@ -28,7 +28,7 @@ jobs:
         sh autogen.sh
     - name: Configure
       run: |
-        ./configure --enable-debug --enable-debuginfo
+        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
     - name: Make
       run: |
         make --no-print-directory -s pkg-utils pkg-kmod