From 78524330fdb28ebd9606970b10dc835ca308a03d Mon Sep 17 00:00:00 2001 From: Fei Li Date: Sun, 13 Jan 2019 22:08:45 +0800 Subject: [PATCH] Fix segmentation fault when qemu_signal_init fails When qemu_signal_init() fails in qemu_init_main_loop(), we return without setting an error. Its callers crash then when they try to report the error with error_report_err(). To avoid such segmentation fault, add a new Error parameter to make the call trace to propagate the err to the final caller. Fixes: 2f78e491d7b46542158ce0b8132ee4e05bc0ade4 Cc: Paolo Bonzini Signed-off-by: Fei Li Reviewed-by: Fam Zheng Reviewed-by: Markus Armbruster Message-Id: <20190113140849.38339-2-lifei1214@126.com> Signed-off-by: Dr. David Alan Gilbert --- util/main-loop.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/util/main-loop.c b/util/main-loop.c index affe0403c5..443cb4cfe8 100644 --- a/util/main-loop.c +++ b/util/main-loop.c @@ -71,7 +71,7 @@ static void sigfd_handler(void *opaque) } } -static int qemu_signal_init(void) +static int qemu_signal_init(Error **errp) { int sigfd; sigset_t set; @@ -96,7 +96,7 @@ static int qemu_signal_init(void) sigdelset(&set, SIG_IPI); sigfd = qemu_signalfd(&set); if (sigfd == -1) { - fprintf(stderr, "failed to create signalfd\n"); + error_setg_errno(errp, errno, "failed to create signalfd"); return -errno; } @@ -109,7 +109,7 @@ static int qemu_signal_init(void) #else /* _WIN32 */ -static int qemu_signal_init(void) +static int qemu_signal_init(Error **errp) { return 0; } @@ -148,7 +148,7 @@ int qemu_init_main_loop(Error **errp) init_clocks(qemu_timer_notify_cb); - ret = qemu_signal_init(); + ret = qemu_signal_init(errp); if (ret) { return ret; }