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159 Commits

Author SHA1 Message Date
Dmitry Vyukov
0e29942f77 pkg/report: improve KMSAN report parsing 
Extract guilty frame from stack.
Add few more ignored functions.
Add more tests.
 2018-09-13 11:21:29 +02:00
Dmitry Vyukov
b692332724 pkg/report: improve rcu stall/lockup reports 
During rcu stalls and cpu lockups kernel loops in some part of code,
usually across several functions. When the stall is detected, traceback
points to a random stack within the looping code. We generally take
the top function in the stack (with few exceptions) as the bug identity.
As the result stalls with the same root would produce multiple reports
in different functions, which is bad.
Instead we identify a representative function deeper in the stack.
For most syscalls it can be the syscall entry function (e.g. SyS_timer_create).
However, for highly discriminated functions syscalls like ioctl/read/write/connect
we take the previous function (e.g. for connect the one that points to exact
protocol, or for ioctl the one that is related to the device).

Fixes #710
 2018-09-10 16:19:47 +02:00
Dmitry Vyukov
59e97f7e17 pkg/report: refine fuchsia function name regexp 
C++ function names can contain '~'.
 2018-09-04 16:40:27 +02:00
Dmitry Vyukov
938220fdbb pkg/report: ignore mm/memory.c as guilty file 2018-08-29 21:27:37 -07:00
Anton Lindqvist
b771b17ec9 Add mandatory OpenBSD bits (#689) 
all: add openbsd support

squash of the following commits:

* openbsd: add mandatory bits
* report: add OpenBSD support
* executor: skip building kvm on OpenBSD
* executor: add OpenBSD support
Linking against libutil is necessary due to usage of openpty(3).
* executor: fix typo in fail() message
* fixup! report: add OpenBSD support
* fixup! openbsd: add mandatory bits
* fixup! openbsd: add mandatory bits
* fixup! openbsd: add mandatory bits
* fixup! report: add OpenBSD support
* gometalinter: skip sys/openbsd
 2018-08-28 10:07:26 -07:00
Dmitry Vyukov
36d87ddbf8 pkg/report: refactor and improve fuchsia report parsing 
Switch to the existing oops-based infrastructure.
Extending existing code is nearly impossible.

Detect service crashes on fuchsia.

Add more tests.
 2018-08-25 18:18:11 -07:00
Dmitry Vyukov
20749b5987 pkg/report: ignore android art debug output 
Now actually ignore it.
 2018-08-25 08:00:22 -07:00
Dmitry Vyukov
dd62265df8 pkg/report: ignore android art debug output 2018-08-25 07:59:35 -07:00
Dmitry Vyukov
565e2ad078 pkg/report: ignore another mutex lock guts function 2018-08-13 17:14:08 -07:00
Dmitry Vyukov
bf45aa5363 pkg/report: skip more spinlock frames 
Currently this report is named:
"general protection fault in perf_trace_lock"
which is bad.
 2018-08-04 17:39:21 +02:00
Dmitry Vyukov
5cbdd9f444 gometalinter: strengthen gocyclo limit 
Strengthen gocycle limit 35->24! Yay! No more jumbo functions!

Fixes #538
 2018-08-02 16:57:32 +02:00
Dmitry Vyukov
fbedd425b5 pkg/mgrconfig: move from syz-manager/mgrconfig 
mgrconfig was used only by syz-manager initially,
but now it's used by a dozen of packages and it's
weird to import from under a binary dir.
pkg/ is much more reasonable dir for a widely used
helper package.
 2018-08-02 16:57:32 +02:00
Dmitry Vyukov
72ad4a3c4c pkg/report: refactor test 
Split a long function.

Update #538
 2018-08-02 16:57:31 +02:00
Dmitry Vyukov
46bad78542 pkg/report: refactor linux report parsing 
Split a very long function into 2.

Update #538
 2018-07-31 18:38:54 +02:00
Dmitry Vyukov
50c3709eb0 .gometalinter: reduce dupl threshold 
Reduce dupl threshold from 63 to 60 and fix violations.

Update #538
 2018-07-31 12:42:52 +02:00
Dmitry Vyukov
f5d67fbd9c .gometalinter.json: enable gofmt 
The part that we want from gofmt is simplify (-s).
Fix all code that needs fixing.

Update #538
 2018-07-31 12:16:54 +02:00
Dmitry Vyukov
db7957bc09 pkg/report: add format for akaros warnings 2018-07-24 10:10:45 +02:00
Dmitry Vyukov
49f3583951 pkg/report: add another akaros backtrace message 2018-07-18 17:34:19 +02:00
Dmitry Vyukov
bad4246bf2 pkg/report: improve akaros reporter and implement symbolization 2018-07-16 17:03:14 +02:00
Dmitry Vyukov
58293c9eb3 pkg/report: fix kmalloc bug in krealloc 2018-07-16 10:16:21 +02:00
Dmitry Vyukov
3d741171f2 pkg/report: add "lock held when returning to user space" format for older kernels 2018-07-13 10:31:26 +02:00
Dmitry Vyukov
3986ce95fd pkg/report: add report format for "lock held when returning to user space" 
This report does not have stack trace, so we always detected it as corrupted.
 2018-07-12 12:38:52 +02:00
Dmitry Vyukov
3abb98207d pkg/report: detect partial result errors 2018-07-06 20:25:02 +02:00
Dmitry Vyukov
0fb38ef496 pkg/report: detect fuchsia double faults 2018-07-06 16:35:21 +02:00
Dmitry Vyukov
d02d039529 pkg/report: fix lambda demangling 
demangle package does not minimize lambda symbols properly
(does not strip parameters and template paratemeter).
Do it manually.

See: https://github.com/ianlancetaylor/demangle/issues/5
 2018-07-05 13:21:01 +02:00
Dmitry Vyukov
d9ed95ab6f pkg/report: add simpler reporter for akaros 2018-07-05 10:44:34 +02:00
Dmitry Vyukov
f525fd7250 pkg/report: suppress more gvisor OOMs 2018-07-05 07:02:48 +02:00
Dmitry Vyukov
58924941cc pkg/report: fix race on symbolizer in test 
Symbolizer is not meant to be invoked with an empty binary.
 2018-07-02 17:00:00 +02:00
Dmitry Vyukov
3e16f33c65 vm: suppress "no output" and "lost connection" reports 2018-06-30 14:51:07 +02:00
Dmitry Vyukov
44594e6362 pkg/report: suppress fuzzer crashes on fuchsia 2018-06-30 13:59:52 +02:00
Dmitry Vyukov
1d788bb883 pkg/report: better detect hangs on fuchsia 2018-06-30 13:21:17 +02:00
Dmitry Vyukov
a2c1dcb323 pkg/report: implement fuchsia reporter 2018-06-27 19:44:00 +02:00
Dmitry Vyukov
43e60f7e09 pkg/report: supporess another OOM for gvisor 2018-06-27 09:35:10 +02:00
Dmitry Vyukov
21e16efbf0 pkg/report: add suppressions for Go race OOMs 2018-06-23 10:13:12 +02:00
Dmitry Vyukov
cb93a59bbf pkg/report: fix gvisor segv reports 2018-06-22 20:01:10 +02:00
Dmitry Vyukov
b5323c280f pkg/report: add more gvisor formats 2018-06-22 17:38:37 +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
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
6db75fefbe pkg/report: add another format for null RIP 
Kernel keeps inventing new formats...
 2018-06-08 09:34:02 +02:00
Dmitry Vyukov
7fb9023fd7 pkg/report: ignore down functions for task hung bugs 2018-06-07 14:01:22 +02:00
Dmitry Vyukov
a6bf43aeeb pkg/report: add simplistic fuchsia reporter 2018-06-06 16:29:59 +02:00
Dmitry Vyukov
9820e1cae6 pkg/report: more "NMI handler took too long" ignores 2018-06-06 10:02:03 +02:00
Dmitry Vyukov
3f4f3d5ec9 pkg/report: ignore INFO messages about long interrupts 2018-06-04 12:07:28 +02:00
Dmitry Vyukov
b9fea20df7 pkg/report: remove duplicated stub code 
Update #538
 2018-05-07 13:05:41 +02:00
Dmitry Vyukov
c7f6891ca7 pkg/report: reformat code 
There is some regression in Go formatting on tip.
I am constantly getting diffs after formatting.
Filed: https://github.com/golang/go/issues/25161
 2018-04-29 12:04:22 +02:00
Dmitry Vyukov
190d92e056 sys/linux: extend namespace desciptions 
Slightly extend namespace descriptions and move
them to a separate file.
 2018-04-27 18:47:58 +02:00
Dmitry Vyukov
0008f52678 pkg/report: fix remaining lockdep report formats 
We fixed only 1, but new format affects all lockdep reports.
Fix all of them.
 2018-04-27 15:44:47 +02:00
Dmitry Vyukov
d0b7645387 pkg/report: few report parsing fixes for linux 2018-04-26 14:46:16 +02:00