From 5057bd968b33fcb4bcf337730e961e53fcb54645 Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Mon, 1 Jun 2026 15:53:26 +0300 Subject: =?UTF-8?q?fix(classify):=20msgsnd=20returns=20status,=20not=20byt?= =?UTF-8?q?es=20=E2=80=94=20make=20ret=20UNCLASSIFIED?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit msgsnd(2) returns 0 on success or -1 on error; the payload size msgsz is an INPUT argument, never the return value. It was wrongly listed in retClassifications as WriteClassified, which made the stats engine treat its 0 return as "bytes written". Remove it so its return stays UNCLASSIFIED, consistent with its SysV IPC siblings (msgrcv legitimately stays ReadClassified because it returns a received byte count). Regenerated tracepoints/docs accordingly. Verified: mage generate idempotent, mage build OK, internal/generate tests pass, and the TestSysVMsgBasic integration test (added in task 7i0) still passes. Co-Authored-By: Claude Opus 4.8 --- docs/syscall-tracing-plan.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'docs') diff --git a/docs/syscall-tracing-plan.md b/docs/syscall-tracing-plan.md index 822f363..2225d48 100644 --- a/docs/syscall-tracing-plan.md +++ b/docs/syscall-tracing-plan.md @@ -94,7 +94,7 @@ Payload bytes classified by return value: - ReadClassified: `fgetxattr`, `flistxattr`, `getdents`, `getdents64`, `getrandom`, `getxattr`, `getxattrat`, `lgetxattr`, `listxattr`, `listxattrat`, `llistxattr`, `mq_timedreceive`, `msgrcv`, `pread64`, `preadv`, `preadv2`, `process_vm_readv`, `read`, `readlink`, `readlinkat`, `readv`, `recvfrom`, `recvmsg`, `syslog` - TransferClassified: `copy_file_range`, `sendfile64`, `splice`, `tee`, `vmsplice` -- WriteClassified: `mq_timedsend`, `msgsnd`, `process_vm_writev`, `pwrite64`, `pwritev`, `pwritev2`, `sendmsg`, `sendto`, `write`, `writev` +- WriteClassified: `mq_timedsend`, `process_vm_writev`, `pwrite64`, `pwritev`, `pwritev2`, `sendmsg`, `sendto`, `write`, `writev` All other traced syscalls are treated as non-bytes for throughput accounting. Memory extent is tracked separately via address-space metrics. -- cgit v1.2.3