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linux-user: Clean up when exiting due to a signal 

When exiting due to an exit() syscall, qemu-user calls
preexit_cleanup(), but this is currently not the case when exiting due
to a signal. This leads to various buffers not being flushed (e.g.,
for gprof, for gcov, and for the upcoming perf support).

Add the missing call.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230112152013.125680-2-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
master
Ilya Leoshkevich 2023-01-12 16:20:11 +01:00 committed by Richard Henderson
parent fb7e799034
commit da91c19202
1 changed files with 5 additions and 3 deletions
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8
linux-user/signal.c
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@ -695,7 +695,7 @@ void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr,
/* abort execution with signal */
static G_NORETURN
void dump_core_and_abort(int target_sig)
void dump_core_and_abort(CPUArchState *cpu_env, int target_sig)
{
CPUState *cpu = thread_cpu;
CPUArchState *env = cpu->env_ptr;
@ -724,6 +724,8 @@ void dump_core_and_abort(int target_sig)
target_sig, strsignal(host_sig), "core dumped" );
}
preexit_cleanup(cpu_env, 128 + target_sig);
/* The proper exit code for dying from an uncaught signal is
* -<signal>. The kernel doesn't allow exit() or _exit() to pass
* a negative value. To get the proper exit code we need to
@ -1058,12 +1060,12 @@ static void handle_pending_signal(CPUArchState *cpu_env, int sig,
sig != TARGET_SIGURG &&
sig != TARGET_SIGWINCH &&
sig != TARGET_SIGCONT) {
dump_core_and_abort(sig);
dump_core_and_abort(cpu_env, sig);
}
} else if (handler == TARGET_SIG_IGN) {
/* ignore sig */
} else if (handler == TARGET_SIG_ERR) {
dump_core_and_abort(sig);
dump_core_and_abort(cpu_env, sig);
} else {
/* compute the blocked signals during the handler execution */
sigset_t *blocked_set;