diff options
Diffstat (limited to 'executor/executor_linux.h')
| -rw-r--r-- | executor/executor_linux.h | 52 |
1 files changed, 45 insertions, 7 deletions
diff --git a/executor/executor_linux.h b/executor/executor_linux.h index 578c65673..b8c98d3f7 100644 --- a/executor/executor_linux.h +++ b/executor/executor_linux.h @@ -256,13 +256,51 @@ NORETURN void doexit_thread(int status) } } +static void setup_nicvf() +{ + // This feature has custom checking precedure rather than just rely on running + // a simple program with this feature enabled b/c find_vf_interface cannot be made + // failing. It searches for the nic in init namespace, but then the nic is moved + // to one of testing namespace, so if number of procs is more than the number of devices, + // then some of them won't fine a nic (the code is also racy, more than one proc + // can find the same device and then moving it will fail for all but one). + // So we have to make find_vf_interface non-failing in case of failures, + // which means we cannot use it for feature checking. + if (open("/sys/bus/pci/devices/0000:00:11.0/", O_RDONLY | O_NONBLOCK) == -1) + fail("PCI device 0000:00:11.0 is not available"); +} + +static void setup_devlink_pci() +{ + // See comment in setup_nicvf. + if (open("/sys/bus/pci/devices/0000:00:10.0/", O_RDONLY | O_NONBLOCK) == -1) + fail("PCI device 0000:00:10.0 is not available"); +} + +static void setup_delay_kcov() +{ + is_kernel_64_bit = detect_kernel_bitness(); + cover_t cov = {}; + cov.fd = kCoverFd; + cover_open(&cov, false); + cover_mmap(&cov); + cov.data = nullptr; + cover_mmap(&cov); + // If delayed kcov mmap is not supported by the kernel, + // accesses to the second mapping will crash. + const_cast<volatile char*>(cov.data)[0] = 1; +} + #define SYZ_HAVE_FEATURES 1 static feature_t features[] = { - {"leak", setup_leak}, - {"fault", setup_fault}, - {"binfmt_misc", setup_binfmt_misc}, - {"kcsan", setup_kcsan}, - {"usb", setup_usb}, - {"802154", setup_802154}, - {"swap", setup_swap}, + {rpc::Feature::DelayKcovMmap, setup_delay_kcov}, + {rpc::Feature::Fault, setup_fault}, + {rpc::Feature::Leak, setup_leak}, + {rpc::Feature::KCSAN, setup_kcsan}, + {rpc::Feature::USBEmulation, setup_usb}, + {rpc::Feature::LRWPANEmulation, setup_802154}, + {rpc::Feature::BinFmtMisc, setup_binfmt_misc}, + {rpc::Feature::Swap, setup_swap}, + {rpc::Feature::NicVF, setup_nicvf}, + {rpc::Feature::DevlinkPCI, setup_devlink_pci}, }; |