diff options
| author | Zubin Mithra <zsm@chromium.org> | 2020-02-06 13:58:50 -0800 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2020-02-20 17:37:54 +0100 |
| commit | 02698d8bc45175a6626098daa8badd62ff88dcfb (patch) | |
| tree | d09d0482913c9f2d16afb7b3524e1c97f3028cf9 /docs | |
| parent | 81230308c61b57d9f496c92c439c0d38e07a0d26 (diff) | |
vm/isolated: add initial support for fuzzing chromebooks
(WIP PR)
Add support for StartupScript.
* Modify Config{} to contain PostRepairScript.
* Allow repair() to execute a startup_script after reboot. The contents
of this script execute on the DUT.
Add pstore support:
* Modify Config{} to contain Pstore.
* Modify Diagnose() to reboot the DUT and fetch pstore logs,
conditional on inst.cfg.Pstore.
* Add readPstoreContents().
* Allow clearing previous pstore logs upon Create() and after use inside
readPstoreContents().
* Fetching pstore crashlogs relies on reliably getting lost connection
on DUT reboot. Use "ServerAliveInterval=6 ServerAliveCountMax=5" ssh
options when running syz-fuzzer with Pstore support enabled.
Allow parsing pstore contents:
* Diagnose() now returns pstore contents.
Refactoring:
* Move out some reusable parts of repair() to waitRebootAndSSH().
* Have an early return inside repair() if inst.waitForSSH() fails.
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/linux/setup_linux-host_isolated.md | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/linux/setup_linux-host_isolated.md b/docs/linux/setup_linux-host_isolated.md index ec434cd12..387ff1052 100644 --- a/docs/linux/setup_linux-host_isolated.md +++ b/docs/linux/setup_linux-host_isolated.md @@ -53,6 +53,17 @@ Host * Before fuzzing, connect to the machine and keep the connection open so all scp and ssh usage will reuse it. +# Optional: Pstore support + +If the device under test (DUT) has Pstore support, it is possible to configure syzkaller to +fetch crashlogs from /sys/fs/pstore. You can do this by setting `"pstore": true` within +the `vm` section of the syzkaller configuration file. + +# Optional: Startup script + +To execute commands on the DUT before fuzzing (re-)starts, +`startup_script` can be used. + ## Syzkaller Build syzkaller as described [here](/docs/contributing.md). @@ -71,6 +82,7 @@ Use the following config: "type": "isolated", "vm": { "targets" : [ "10.0.0.1" ], + "pstore": false, "target_dir" : "/home/user/tmp/syzkaller", "target_reboot" : false } |