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* sys, executor: more kvm improvementsDmitry Vyukov2017-01-121-1/+5
| | | | | | | 1. Basic support for arm64 kvm testing. 2. Fix compiler warnings in x86 kvm code. 3. Test all pseudo syz calls in csource. 4. Fix handling of real code in x86.
* sys: extend kvm supportDmitry Vyukov2017-01-091-0/+9
| | | | | | Add new pseudo syscall syz_kvm_setup_cpu that setups VCPU into interesting states for execution. KVM is too difficult to setup otherwise. Lots of improvements possible, but this is a starting point.
* executor: use NONFAILING strcpy in syz_open_devDmitry Vyukov2017-01-091-1/+1
| | | | The source is fuzzer provided memory, it can be non-addressable.
* csource: compile with -WerrorDmitry Vyukov2017-01-091-2/+2
| | | | | | Check for compiler warnings during compilation. Don't require -std=c99. Fix existing compiler warnings.
* executor: don't fail on ENOMEMDmitry Vyukov2016-12-161-1/+3
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* executor: handle exit failuresDmitry Vyukov2016-12-081-9/+37
| | | | See the added comment for explanation.
* executor: add struct to cap structsDmitry Vyukov2016-12-071-2/+2
| | | | | Otherwise it does not compile as C. Also regenerate csource/common.go (it misses the MAX_PIDS change).
* executor: use different address for our network cardDmitry Vyukov2016-12-061-3/+7
| | | | | IP addresses like 192.168.0.1/192.168.1.1 are often used for routing between VM and the host. Offset our IP addresses to start from 192.168.218.0 to reduce potential conflicts.
* executor: change the way we wait for childrenDmitry Vyukov2016-12-051-2/+3
| | | | | | waitpid(pid) does not work if child invokes ptrace(PTRACE_TRACEME): https://groups.google.com/forum/#!topic/syzkaller/SjWzOnNRRIU Use waitpid(-1) instead.
* executor: don't try to open tun if it's not enabledAndrey Konovalov2016-12-021-3/+8
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* csourse: emit remove_dir only when neededAndrey Konovalov2016-11-291-0/+2
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* executor: emit ethernet trafficAndrey Konovalov2016-11-291-13/+134
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* csource: don't emit syz_ syscalls is they are not usedDmitry Vyukov2016-11-261-3/+26
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* executor: fix sandbox=setuidDmitry Vyukov2016-11-221-2/+4
| | | | | Need to chmod(0777) the work dir before we do setuid(nobody). Otherwise nobody user won't have rights to use the temp dir.
* csourceL add missing include and defineDmitry Vyukov2016-11-221-0/+2
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* repro: factor out of syz-repro toolDmitry Vyukov2016-11-191-0/+365
| | | | | | | | Factor out repro logic from syz-repro tool, so that it can be used in syz-manager. Also, support sandboxes in code generated by csoure. This is required to reproduce crashes that require e.g. namespace sandbox.
* sys, prog: add tests for description parsing and serializationDmitry Vyukov2016-09-281-0/+2
| | | | | | | | | | Add sys/test.txt file with description of syscalls for tests. These descriptions can be used to ensure that we can parse everything we clain we can parse. Use these descriptions to write several tests for exec serialization (one test shows that alignment handling is currently incorrect). These test descriptions can also be used to write e.g. mutation tests. Update #78
* csource: teach how to execute pseudo syz_ syscallsDmitry Vyukov2016-08-281-1/+112
| | | | Update #59
* executor, csource: share some common code between executor and csourceDmitry Vyukov2016-08-281-0/+43
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