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474 Commits

Author SHA1 Message Date
Dmitry Vyukov
9c84f7c395 pkg/osutil: allow disabling sandboxing with env var 
If SYZ_DISABLE_SANDBOXING=yes is set, don't do user sandboxing.
Will be usefule for bisection tool which runs locally,
but needs to build kernel.

Update #501
 2018-05-17 14:03:46 +02:00
Dmitry Vyukov
031c7941d7 pkg/compiler: add optional builtin template 
type optional[T] [
	val	T
	void	void
] [varlen]
 2018-05-17 12:02:30 +02:00
Dmitry Vyukov
90c54c496b pkg/compiler: detect duplicate fields in template structs 2018-05-17 11:46:45 +02:00
Dmitry Vyukov
a367c1d7a8 tools/create-gce-image.sh: support MKE2FS_CONFIG 2018-05-16 17:21:29 +02:00
Dmitry Vyukov
86ea19e4c2 tools/create-gce-image.sh: revert loop to nbd 
loop devices are nice, but unfortunately this creates images
that does not boot on GCE. Reason is unclear.
Revert back to nbd for now.
 2018-05-14 19:32:39 +02:00
Dmitry Vyukov
d131f1b9fc pkg/instance: relax syzkaller path check 
Only check that syzkaller path is in GOPATH if we are going to build it.
syz-ci image testing does not have syzkaller path in GOPATH,
but it also does not build syzkaller.
 2018-05-14 13:47:44 +02:00
Dmitry Vyukov
2407e7407a pkg/instance: add package for testing of images/patches/bisection 
Move helper image/patch testing code from syz-ci/testing.go
to a separate package so that it can be reused during bisection.

Update #501
 2018-05-14 11:32:56 +02:00
Dmitry Vyukov
9fb3ae4dfd pkg/osutil: introduce TempFile helper 
Introduce TempFile helper and use it in several packages.
 2018-05-14 11:17:23 +02:00
Dmitry Vyukov
acfd774f46 pkg/git: add bisection functionality 
Bisect bisects good..bad commit range against the provided predicate (wrapper around git bisect).
The predicate should return an error only if there is no way to proceed
(it will abort the process), if possible it should prefer to return BisectSkip.
Progress of the process is streamed to the provided trace.
Returns the first commit on which the predicate returns BisectBad.

Update #501
 2018-05-14 11:17:23 +02:00
Dmitry Vyukov
b4df103f78 pkg/git: add PreviousReleaseTags 
PreviousReleaseTags returns list of preceding release tags
that are reachable from the given commit.

Update #501
 2018-05-14 11:17:23 +02:00
Dmitry Vyukov
5060be1a90 pkg/git: add SwitchCommit and GetCommit 
Will be useful for bisection logic.

Update #501
 2018-05-14 11:17:23 +02:00
Dmitry Vyukov
d39e52252c pkg/kernel: use oldconfig instead of olddefconfig 
See the added comment for motivation.

Update #501
 2018-05-14 11:17:23 +02:00
Dmitry Vyukov
2a287a4dfc pkg/kernel: accept kernel config as byte slice 
We usually have the config in memory,
so saving it to disk is an unnecessary step.
Accept byte slice directly.

Update #501
 2018-05-14 11:17:23 +02:00
Dmitry Vyukov
1944eeb95d pkg/kernel: run distclean with -jNCPU 2018-05-14 11:17:18 +02:00
Dmitry Vyukov
ea9496cdbd tools/create-gce-image.sh: use loop instead of nbd 
loop is much more standard than nbd and does not require additional modules.
nbd broke on Debian rolling.
loop also allows parallel execution thanks to losetup -f.

Use loop instead of nbd.
Also improve cleanup logic and add one missing sudo.

Update #501
 2018-05-14 11:16:36 +02:00
Ioana Ciornei
481f030ccd executor: fix strncpy compile error 
gcc8 is stricter when dealing with strings and strncpy and demands that
the size of the actual string to be copied to be explicitly smaller than
the size of the destination, just to make sure the NULL terminator is
taken into considerantion. This patch fixes the issue.

Signed-off-by: Ioana Ciornei <ciorneiioana@gmail.com>
 2018-05-13 16:27:22 +02:00
Dmitry Vyukov
045bbd4afb pkg/csource: fix test exit code 2018-05-07 20:40:44 +02:00
Dmitry Vyukov
02e3401638 pkg/csource: skip tests under race detector 
csource tests consume too much memory under race detector (>1GB),
and periodically timeout on Travis. So we skip them.
 2018-05-07 20:27:06 +02:00
Dmitry Vyukov
bdff58b1a1 pkg/csource: reduce test size 
The test times out on travis:

https://travis-ci.org/google/syzkaller/jobs/375965899
https://travis-ci.org/google/syzkaller/jobs/375965900
 2018-05-07 19:24:46 +02:00
Dmitry Vyukov
9e0846e8a4 all: get rid of underscores in identifiers 
Underscores are against Go coding style.

Update #538
 2018-05-07 17:59:06 +02:00
Dmitry Vyukov
99c1f48659 sys/syz-extract: split overly long function 
Update #538
 2018-05-07 16:50:19 +02:00
Dmitry Vyukov
55a5e98a0a pkg/ifuzz: move generated code to a separate package 
This helps to ignore generated code with gometalinter.
There is currently no other way:
https://github.com/alecthomas/gometalinter/issues/270

Update #538
 2018-05-07 15:42:28 +02:00
Dmitry Vyukov
5f9dcfdadb pkg/git: remove duplicated code in tests 
Update #538
 2018-05-07 13:16:29 +02:00
Dmitry Vyukov
b9fea20df7 pkg/report: remove duplicated stub code 
Update #538
 2018-05-07 13:05:41 +02:00
Dmitry Vyukov
a211da1a40 pkg/db: remove code duplication in test 
Update #538
 2018-05-06 19:47:40 +02:00
Dmitry Vyukov
2c7e14a847 gometalinter: enable cyclomatic complexity checking 
Refactor some functions to be simpler.

Update #538
 2018-05-04 18:03:46 +02:00
Dmitry Vyukov
08141db61a gometalinter: enable line length checking 
120 columns looks like a reasonable limit
and requires few changes to existing code.

Update #538
 2018-05-04 14:24:51 +02:00
Dmitry Vyukov
a630fd8b41 gometalinter: some fixes for unparam 
But we still can't enable it as there are more [uninteresting] warnings.

Update #538
 2018-05-03 15:48:26 +02:00
Dmitry Vyukov
9fe5658a1b gometalinter: check dot imports 
Update #538
 2018-05-03 14:41:34 +02:00
Dmitry Vyukov
39302300d9 gometalinter: check unkeyed composite literals 
Update #538
 2018-05-03 14:01:48 +02:00
Dmitry Vyukov
4c24e4a467 gometalinter: enable package comment checking 
Update #538
 2018-05-03 13:53:01 +02:00
Dmitry Vyukov
6e2ce6613b pkg/host: fix syz_mount_image detection 
Only init admin can mount filesystems with images.
 2018-04-29 18:45:45 +02:00
Dmitry Vyukov
1e85f7b9af pkg/ast: support char constants 
Frequently it's useful to do something like:

int8['a':'z']
punctuation = ',', '-', ':'
 2018-04-29 12:04:22 +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
3c7caf1d6e pkg/host: enable more fault injection 2018-04-27 15:43:29 +02:00
Dmitry Vyukov
d0b7645387 pkg/report: few report parsing fixes for linux 2018-04-26 14:46:16 +02:00
Dmitry Vyukov
37e76fe20b pkg/scource: rename compiled binary to syz-executor 
We call the binary syz-executor because it sometimes shows in bug titles,
and we don't want 2 different bugs for when a crash is triggered during
fuzzing and during repro.
 2018-04-24 19:17:07 +02:00
Dmitry Vyukov
fd5157bebf pkg/report: sanitize titles better 
Strip non-printable characters from titles.
Trim whitespaces on both ends.
Replace tabs with spaces.
Remove duplicate spaces.
Reduce max title length.
 2018-04-24 19:17:07 +02:00
Dmitry Vyukov
98e363b852 pkg/git: don't create shallow repos 
Shallow repos created by CheckoutBranch conflict with
what CheckoutCommit tries to do.
Fetch of a shallow repo does not unshallow it.
And then checkout of a non-head commit fails.
 2018-04-24 19:17:07 +02:00
Dmitry Vyukov
9366d03f00 dashboard/app: allow testing fixes on exact commit and without patch 
This implements 2 features:
1. It's now possible to specify exact commit when testing as:

2. It's possible to test without patch attached
assuming the patch is already committed to the tested tree.

Fixes #558
 2018-04-24 13:23:01 +02:00
Dmitry Vyukov
e2f4bf8f38 pkg/gce: improve API rate limit logic 
Sometimes we see rate limiting errors.
This is especially bad for e.g. patch testing requests.
Increase default API delay and add backoff logic.
 2018-04-24 13:23:01 +02:00
Dmitry Vyukov
33424b08c3 pkg/report: more corrupted report detection 2018-04-24 13:23:01 +02:00
Dmitry Vyukov
e7e85d3609 pkg/kernel: fix gometalinter warning 2018-04-23 16:50:25 +02:00
Dmitry Vyukov
8b5dcf17b0 syz-ci: clean kernel dir before patch test build 
This leads to false errors when we are switching between gcc and clang:

kernel build failed: failed to run /usr/bin/make [make bzImage -j 32 CC=/syzkaller/clang-kmsan/bin/clang]: exit status 2
arch/x86/Makefile:184: *** Compiler lacks asm-goto support..  Stop.

Fixes #568
 2018-04-23 16:26:26 +02:00
Dmitry Vyukov
ff12bea91c pkg/ipc: fix data race on config.Timeout 2018-04-23 16:26:26 +02:00
Dmitry Vyukov
8b9a3f2c76 pkg/report: add some example arm crashes 2018-04-20 20:14:10 +02:00
Dmitry Vyukov
bf2018dd07 executor: don't fail when ipv6 is not enabled 
Check in checkpoint_iptables is not enough as
reset_iptables will fail even if no tables enabled.
Add similar check to reset_iptables.
 2018-04-20 20:14:10 +02:00
Dmitry Vyukov
e5453dd396 executor: increase max image size to 128MB 
Images of some filesystems need to be that large (xfs, btrfs, f2fs).
 2018-04-19 16:59:49 +02:00