diff options
| author | Thomas Huth <thuth@redhat.com> | 2015-04-09 15:32:45 +0200 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-04-13 12:11:44 +0100 |
| commit | 4d0ecde44ae6dab3aa9d10c23e61d9d43789731a (patch) | |
| tree | 03b7be6b612c03c8943d4b201fc75ecc5eb07419 /hw/pci | |
| parent | 342b0711cd62ddc08d334d879eac57b68f925fd5 (diff) | |
pci: Fix crash with illegal "-net nic, model=xxx" option
Current QEMU crashes when specifying an illegal model with the
"-net nic,model=xxx" option, e.g.:
$ qemu-system-x86_64 -net nic,model=n/a
qemu-system-x86_64: Unsupported NIC model: n/a
Program received signal SIGSEGV, Segmentation fault.
The gdb backtrace looks like this:
0x0000555555965fe0 in error_get_pretty (err=0x0) at util/error.c:152
152 return err->msg;
(gdb) bt
0 0x0000555555965fe0 in error_get_pretty (err=0x0) at util/error.c:152
1 0x0000555555965ffd in error_report_err (err=0x0) at util/error.c:157
2 0x0000555555809c90 in pci_nic_init_nofail (nd=0x555555e49860 <nd_table>, rootbus=0x5555564409b0,
default_model=0x55555598c37b "e1000", default_devaddr=0x0) at hw/pci/pci.c:1663
3 0x0000555555691e42 in pc_nic_init (isa_bus=0x555556f71900, pci_bus=0x5555564409b0)
at hw/i386/pc.c:1506
4 0x000055555569396b in pc_init1 (machine=0x5555562abbf0, pci_enabled=1, kvmclock_enabled=1)
at hw/i386/pc_piix.c:248
5 0x0000555555693d27 in pc_init_pci (machine=0x5555562abbf0) at hw/i386/pc_piix.c:310
6 0x000055555572ddf5 in main (argc=3, argv=0x7fffffffe018, envp=0x7fffffffe038) at vl.c:4226
The problem is that pci_nic_init_nofail() does not check whether the err
parameter from pci_nic_init has been set up and thus passes a NULL pointer
to error_report_err(). Fix it by correctly checking the err parameter.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/pci')
| -rw-r--r-- | hw/pci/pci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 6941a82a7f..b3d5100112 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1660,7 +1660,9 @@ PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, res = pci_nic_init(nd, rootbus, default_model, default_devaddr, &err); if (!res) { - error_report_err(err); + if (err) { + error_report_err(err); + } exit(1); } return res; |