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8370314: Update signals_posix with new Linux signal codes

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Reviewed-by: shade, jwaters
This commit is contained in:
David Holmes 2026-01-13 06:02:01 +00:00
parent 0b9d4c02e3
commit f4ebf9585f
1 changed files with 39 additions and 1 deletions
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40
src/hotspot/os/posix/signals_posix.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2020, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -951,6 +951,32 @@ struct enum_sigcode_desc_t {
const char* s_desc;
};
#if defined(LINUX)
// Additional kernel si_code definitions that are only exported by
// more recent glibc distributions, so we have to hard-code the values.
#ifndef BUS_MCEERR_AR // glibc 2.17
#define BUS_MCEERR_AR 4
#define BUS_MCEERR_AO 5
#endif
#ifndef SEGV_PKUERR // glibc 2.27
#define SEGV_PKUERR 4
#endif
#ifndef SYS_SECCOMP // glibc 2.28
#define SYS_SECCOMP 1
#endif
#ifndef TRAP_BRANCH // glibc 2.30
#define TRAP_BRANCH 3
#endif
#ifndef TRAP_HWBKPT // not glibc version specific - gdb related
#define TRAP_HWBKPT 4
#endif
#endif // LINUX
static bool get_signal_code_description(const siginfo_t* si, enum_sigcode_desc_t* out) {
const struct {
@ -976,6 +1002,7 @@ static bool get_signal_code_description(const siginfo_t* si, enum_sigcode_desc_t
{ SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for mapped object." },
#if defined(LINUX)
{ SIGSEGV, SEGV_BNDERR, "SEGV_BNDERR", "Failed address bound checks." },
{ SIGSEGV, SEGV_PKUERR, "SEGV_PKUERR", "Protection key checking failure." },
#endif
#if defined(AIX)
// no explanation found what keyerr would be
@ -984,8 +1011,18 @@ static bool get_signal_code_description(const siginfo_t* si, enum_sigcode_desc_t
{ SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment." },
{ SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Nonexistent physical address." },
{ SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object-specific hardware error." },
#if defined(LINUX)
{ SIGBUS, BUS_MCEERR_AR,"BUS_MCEERR_AR","Hardware memory error consumed on a machine check: action required." },
{ SIGBUS, BUS_MCEERR_AO,"BUS_MCEERR_AO","Hardware memory error detected in process but not consumed: action optional." },
{ SIGSYS, SYS_SECCOMP, "SYS_SECCOMP", "Secure computing (seccomp) filter failure." },
#endif
{ SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint." },
{ SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap." },
#if defined(LINUX)
{ SIGTRAP, TRAP_BRANCH, "TRAP_BRANCH", "Process taken branch trap." },
{ SIGTRAP, TRAP_HWBKPT, "TRAP_HWBKPT", "Hardware breakpoint/watchpoint." },
#endif
{ SIGCHLD, CLD_EXITED, "CLD_EXITED", "Child has exited." },
{ SIGCHLD, CLD_KILLED, "CLD_KILLED", "Child has terminated abnormally and did not create a core file." },
{ SIGCHLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally and created a core file." },
@ -993,6 +1030,7 @@ static bool get_signal_code_description(const siginfo_t* si, enum_sigcode_desc_t
{ SIGCHLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped." },
{ SIGCHLD, CLD_CONTINUED,"CLD_CONTINUED","Stopped child has continued." },
#ifdef SIGPOLL
{ SIGPOLL, POLL_IN, "POLL_IN", "Data input available." },
{ SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available." },
{ SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available." },
{ SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error." },