From: Trieu Huynh <[email protected]> Check return value of msix_init() and return early on failure instead of continuing with invalid state. - Use ret < 0 to handle negative return value. - No functional changes.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/413 Signed-off-by: Trieu Huynh <[email protected]> --- hw/net/igbvf.c | 2 +- hw/net/rocker/rocker.c | 2 +- hw/pci/msix.c | 2 +- hw/scsi/megasas.c | 16 +++++++++++----- hw/usb/hcd-xhci-pci.c | 17 ++++++++++++----- 5 files changed, 26 insertions(+), 13 deletions(-) diff --git a/hw/net/igbvf.c b/hw/net/igbvf.c index 48d56e43ac..9a165c7063 100644 --- a/hw/net/igbvf.c +++ b/hw/net/igbvf.c @@ -260,7 +260,7 @@ static void igbvf_pci_realize(PCIDevice *dev, Error **errp) ret = msix_init(dev, IGBVF_MSIX_VEC_NUM, &s->msix, IGBVF_MSIX_BAR_IDX, 0, &s->msix, IGBVF_MSIX_BAR_IDX, 0x2000, 0x70, errp); - if (ret) { + if (ret < 0) { return; } diff --git a/hw/net/rocker/rocker.c b/hw/net/rocker/rocker.c index 4a7056bd45..910dce901b 100644 --- a/hw/net/rocker/rocker.c +++ b/hw/net/rocker/rocker.c @@ -1228,7 +1228,7 @@ static int rocker_msix_init(Rocker *r, Error **errp) &r->msix_bar, ROCKER_PCI_MSIX_BAR_IDX, ROCKER_PCI_MSIX_PBA_OFFSET, 0, errp); - if (err) { + if (err < 0) { return err; } diff --git a/hw/pci/msix.c b/hw/pci/msix.c index b35476d057..1b23eaf100 100644 --- a/hw/pci/msix.c +++ b/hw/pci/msix.c @@ -432,7 +432,7 @@ int msix_init_exclusive_bar(PCIDevice *dev, uint32_t nentries, 0, &dev->msix_exclusive_bar, bar_nr, bar_pba_offset, 0, errp); - if (ret) { + if (ret < 0) { return ret; } diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index f62e420a91..90d397374e 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -2380,11 +2380,17 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp) memory_region_init_io(&s->queue_io, OBJECT(s), &megasas_queue_ops, s, "megasas-queue", 0x40000); - if (megasas_use_msix(s) && - msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000, - &s->mmio_io, b->mmio_bar, 0x3800, 0x68, NULL)) { - /* TODO: check msix_init's error, and should fail on msix=on */ - s->msix = ON_OFF_AUTO_OFF; + if (megasas_use_msix(s)) { + ret = msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000, + &s->mmio_io, b->mmio_bar, 0x3800, 0x68, NULL); + + if (ret < 0) { + if (s->msix == ON_OFF_AUTO_ON) { + error_setg(errp, "MSI-X initialization failed"); + return; + } + s->msix = ON_OFF_AUTO_OFF; + } } if (pci_is_express(dev)) { diff --git a/hw/usb/hcd-xhci-pci.c b/hw/usb/hcd-xhci-pci.c index aa570506fc..7bd4425b34 100644 --- a/hw/usb/hcd-xhci-pci.c +++ b/hw/usb/hcd-xhci-pci.c @@ -173,11 +173,18 @@ static void usb_xhci_pci_realize(struct PCIDevice *dev, Error **errp) } if (s->msix != ON_OFF_AUTO_OFF) { - /* TODO check for errors, and should fail when msix=on */ - msix_init(dev, s->xhci.numintrs, - &s->xhci.mem, 0, OFF_MSIX_TABLE, - &s->xhci.mem, 0, OFF_MSIX_PBA, - 0x90, NULL); + ret = msix_init(dev, s->xhci.numintrs, + &s->xhci.mem, 0, OFF_MSIX_TABLE, + &s->xhci.mem, 0, OFF_MSIX_PBA, + 0x90, NULL); + + if (ret < 0) { + if (s->msix == ON_OFF_AUTO_ON) { + error_setg(errp, "MSI-X initialization failed"); + return; + } + s->msix = ON_OFF_AUTO_OFF; + } } s->xhci.as = pci_get_address_space(dev); } -- 2.43.0
