From 3e9a88c3721cd0171ab4e51f0b3617befd124e2a Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Tue, 30 Jun 2020 11:03:43 +0200 Subject: riscv_hart: Fix riscv_harts_realize() error API violations The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. riscv_harts_realize() is wrong that way: it passes @errp to riscv_hart_realize() in a loop. I can't tell offhand whether this can fail. Fix by checking for failure in each iteration. Cc: Palmer Dabbelt Cc: Alistair Francis Cc: Sagar Karandikar Cc: Bastian Koppelmann Cc: Bin Meng Cc: qemu-riscv@nongnu.org Signed-off-by: Markus Armbruster Reviewed-by: Alistair Francis Message-Id: <20200630090351.1247703-19-armbru@redhat.com> --- hw/riscv/riscv_hart.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/hw/riscv/riscv_hart.c b/hw/riscv/riscv_hart.c index e26c382..f59fe52 100644 --- a/hw/riscv/riscv_hart.c +++ b/hw/riscv/riscv_hart.c @@ -40,19 +40,13 @@ static void riscv_harts_cpu_reset(void *opaque) cpu_reset(CPU(cpu)); } -static void riscv_hart_realize(RISCVHartArrayState *s, int idx, +static bool riscv_hart_realize(RISCVHartArrayState *s, int idx, char *cpu_type, Error **errp) { - Error *err = NULL; - object_initialize_child(OBJECT(s), "harts[*]", &s->harts[idx], cpu_type); s->harts[idx].env.mhartid = s->hartid_base + idx; qemu_register_reset(riscv_harts_cpu_reset, &s->harts[idx]); - qdev_realize(DEVICE(&s->harts[idx]), NULL, &err); - if (err) { - error_propagate(errp, err); - return; - } + return qdev_realize(DEVICE(&s->harts[idx]), NULL, errp); } static void riscv_harts_realize(DeviceState *dev, Error **errp) @@ -63,7 +57,9 @@ static void riscv_harts_realize(DeviceState *dev, Error **errp) s->harts = g_new0(RISCVCPU, s->num_harts); for (n = 0; n < s->num_harts; n++) { - riscv_hart_realize(s, n, s->cpu_type, errp); + if (!riscv_hart_realize(s, n, s->cpu_type, errp)) { + return; + } } } -- cgit v1.1