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552 Commits

Author SHA1 Message Date
Dmitry Vyukov
3e16f33c65 vm: suppress "no output" and "lost connection" reports 2018-06-30 14:51:07 +02:00
Dmitry Vyukov
3c690e2e53 pkg/repro: ignore suppressed crashes 
This looks like the simplest way to deal with suppressed crashes reported out of repro.

Fixes #645
 2018-06-30 14:37:59 +02:00
Dmitry Vyukov
44594e6362 pkg/report: suppress fuzzer crashes on fuchsia 2018-06-30 13:59:52 +02:00
Dmitry Vyukov
2960589335 pkg/csource: account for different types of syscalls on fuchsia 2018-06-30 13:40:00 +02:00
Dmitry Vyukov
65c456e595 pkg/csource: don't use pthread_cond_timedwait for fuchsia 
We removed it in executor, do the same in csource.
 2018-06-30 13:32:05 +02:00
Dmitry Vyukov
5012ddc8eb prog: detect when flags are a bitmask 2018-06-30 13:27:24 +02:00
Dmitry Vyukov
906b9e38f1 pkg/ipc: don't consider hang as failure 2018-06-30 13:21:47 +02:00
Dmitry Vyukov
1d788bb883 pkg/report: better detect hangs on fuchsia 2018-06-30 13:21:17 +02:00
Dmitry Vyukov
f7498af7af prog: add stronger fallback signal 
Also mixin resource constructors and some signature
of flags values for successful calls into fallback coverage.
 2018-06-29 20:34:43 +02:00
Dmitry Vyukov
0c4b1960d0 pkg/ipc: suppress gometalinter warnings 2018-06-29 18:18:50 +02:00
Dmitry Vyukov
0a971ab1d0 syz-manager: implement fallback coverage report 2018-06-29 18:15:41 +02:00
Dmitry Vyukov
9dd8cf63e0 executor, pkg/ipc: support output over pipes 2018-06-29 16:33:07 +02:00
Dmitry Vyukov
c45c8c2a07 pkg/instance: fix Accept error check 2018-06-29 12:58:02 +02:00
Dmitry Vyukov
5c7ca877eb pkg/vcs: fix fuchsia sandboxing 2018-06-29 12:11:46 +02:00
Dmitry Vyukov
bdac5e17f1 pkg/build: don't fail without compiler 
Some OSes don't need a compiler.
Just return an empty string in such case.
 2018-06-29 12:03:04 +02:00
Dmitry Vyukov
ca1f32d15a pkg/ipc: cleanup binary copy 2018-06-29 11:58:22 +02:00
Dmitry Vyukov
ac5f183dc0 pkg/ipc: fix cleanup in test 
Currently we first send on errs and then close env.
As the result process can exit before env.Close finishes,
which will leave garbage behind.
Close env before sending on errs.
 2018-06-29 11:46:16 +02:00
Dmitry Vyukov
346edcb763 executor: fix pid check after fork 2018-06-29 11:45:59 +02:00
Dmitry Vyukov
7b45fa115b pkg/csource: support fuchsia 
Lots of assorted heavylifting to support csource on fuchsia.
 2018-06-29 10:47:42 +02:00
Dmitry Vyukov
df42529884 pkg/ipc: use absolute path to start subprocess 
fuchsia mishandles relative paths.
 2018-06-29 10:46:25 +02:00
Dmitry Vyukov
68ce63c468 pkg/build: support fuchsia builds 2018-06-28 13:42:07 +02:00
Dmitry Vyukov
a2c1dcb323 pkg/report: implement fuchsia reporter 2018-06-27 19:44:00 +02:00
Dmitry Vyukov
919e77001d pkg/vcs: add fuchsia support 
For now only checking out and polling.
 2018-06-27 14:56:46 +02:00
Dmitry Vyukov
58e8587f64 pkg/vcs: pave way for multi-vcs support 
Wrap current git interface in abstract interface.
Provide constructor that create repo interface for the given os/vm.
 2018-06-27 13:57:21 +02:00
Dmitry Vyukov
43da5e3a1b pkg/vcs: move from pkg/git 
Rename pkg/git to pkg/vcs because we need to support not only git.
 2018-06-27 13:07:03 +02:00
Dmitry Vyukov
43e60f7e09 pkg/report: supporess another OOM for gvisor 2018-06-27 09:35:10 +02:00
Dmitry Vyukov
b0294c53d0 syz-fuzzer: partially revert "syz-fuzzer: fix gvisor testing" 
This breaks patch testing on syz-ci as it can use older version of syz-fuzzer.
 2018-06-26 16:42:22 +02:00
Dmitry Vyukov
be3706ff1e pkg/build: better support for gvisor race build 
Explicitly pass --features=race.
Expect linux_amd64_static_stripped as a potential output.
 2018-06-26 15:36:46 +02:00
Dmitry Vyukov
089f11817e syz-fuzzer: fix gvisor testing 
Testing code wasn't ready to dial stdin.
Make it use the same logic rpc package uses
to connecto to host.
 2018-06-26 14:12:43 +02:00
Dmitry Vyukov
e726bdf922 syz-manager: make rpc communication finer grained 
RPC package does excessive caching per connection,
so if a larger object is ever sent in any direction,
rpc connection consumes large amount of memory persistently.
This makes manager consume gigs of memory with large
number of VMs and larger corpus/coverage.

Make all communication done in very limited batches.
 2018-06-26 13:59:47 +02:00
Dmitry Vyukov
826b5aabc4 pkg/rpctype: compress rpc traffic 
Both manager and fuzzer consume huge amount of memory
(lots of gigs for manager) due to excessive caching
in rpc connections. Compress traffic to reduce memory
consumption.
 2018-06-26 13:52:36 +02:00
Dmitry Vyukov
3f9c293199 executor: don't crash during tun setup if ipv6 is not enabled 
Some options that tun initialization sets up are optional.
Don't fail if they are missing in kernel.
 2018-06-26 13:47:21 +02:00
Dmitry Vyukov
21e16efbf0 pkg/report: add suppressions for Go race OOMs 2018-06-23 10:13:12 +02:00
Dmitry Vyukov
802897bc33 pkg/instance: say that gvisor can create instances out of thin air 2018-06-23 10:12:35 +02:00
Dmitry Vyukov
665947c70a pkg/build: support gvisor race binaries 2018-06-23 09:46:28 +02:00
Dmitry Vyukov
8e0b1c8525 pkg/ipc: add fallback signal only if normal signal is not enabled 
It's possible to get no signal from normal coverage due to dedup,
in that case we don't want to add fallback coverage
because it can lead to corpus bloat.
 2018-06-23 08:38:50 +02:00
Dmitry Vyukov
cb93a59bbf pkg/report: fix gvisor segv reports 2018-06-22 20:01:10 +02:00
Dmitry Vyukov
67ce863533 pkg/build: save kernel config for gvisor 
gvisor does not use it, but save it verbatim.
This can be useful to keep some additional description of the build.
 2018-06-22 19:13:38 +02:00
Dmitry Vyukov
b5323c280f pkg/report: add more gvisor formats 2018-06-22 17:38:37 +02:00
Dmitry Vyukov
c97f0d7a86 pkg/build: add gvisor support 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
ea804a7120 pkg/build: pave way for multi-OS support 
Unify kernel and image build, that distinction is really uninteresting.
Define interface that each OS needs to implement.
Add gvisor stub.
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
8c9738f9c7 pkg/build: support bazel in CompilerIdentity 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
94ef62054c pkg/build: move from pkg/kernel 
Rename pkg/kernel to pkg/build and prepare for multi-OS support.
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
2a075d57ab pkg/report: allow to specify suppressions per OS 
Currently all (linux-specific) suppressions are hardcoded in mgrconfig.
This is very wrong. Move them to pkg/report and allow to specify per OS.
Add gvisor-specific suppressions.
This required a bit of refactoring. Introduce mgrconfig.KernelObj finally.
Make report.NewReporter and vm.Create accept mgrconfig directly
instead of passing it as multiple scattered args.
Remove tools/syz-parse and it always did the same as tools/syz-symbolize.
Simplify global vars in syz-manager/cover.go.
Create reporter eagerly in manager. Use sort.Slice more.
Overall -90 lines removed.
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
c31f96a8c6 executor: rework fallback coverage 
We have fallback coverage implmentation for freebsd.
1. It's broken after some recent changes.
2. We need it for fuchsia, windows, akaros, linux too.
3. It's painful to work with C code.

Move fallback coverage to ipc package,
fix it and provide for all OSes.
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
14e6c472f5 vm/gvisor: add package 
gvisor package provides support for gVisor, user-space kernel, testing.
See https://github.com/google/gvisor
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
c71647f2cc pkg/report: add gvisor support 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
3cf0de82e9 pkg/report: move title sanitization from linux to common code 
Stripping dynamic data (addresses, numbers) is required for all OSes.
Move this code from linux to common code.
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
9a7d0a5412 pkg/report: pass vm type to NewReporter 
For the case when VM type affects output.
Will be needed for gvisor. It is kinda linux, but kinda not.
 2018-06-22 16:40:45 +02:00
Dmitry Vyukov
87bfb99cfe vm: pass instance to MonitorExecution 
It may need it later to try to obtain additional
diagnostic from hanged instances.
 2018-06-22 16:40:45 +02:00