The order of events when casting causes an access to unintended memory.
```
0x00007ffff7bc19df in fwupd_guid_to_string (guid=0x8000000090d0, flags=FWUPD_GUID_FLAG_MIXED_ENDIAN) at ../libfwupd/fwupd-common.c:550
550 memcpy (&gnat, guid, sizeof(gnat));
(gdb) bt
#0 0x00007ffff7bc19df in fwupd_guid_to_string (guid=0x8000000090d0, flags=FWUPD_GUID_FLAG_MIXED_ENDIAN) at ../libfwupd/fwupd-common.c:550
#1 0x00007fffdbddd195 in fu_nvme_device_get_guid_safe (buf=0x7fffffffce70 "\\\034\\\034FI83Q060610103M66 BC501 NVMe SK hynix 128GB", ' ' <repeats 15 times>, "80001C0T\004", <incomplete sequence \344\254>, addr_start=3110) at ../plugins/nvme/fu-nvme-device.c:83
#2 0x00007fffdbddd60c in fu_nvme_device_parse_cns_maybe_dell (self=0x5555558cc8a0, buf=0x7fffffffce70 "\\\034\\\034FI83Q060610103M66 BC501 NVMe SK hynix 128GB", ' ' <repeats 15 times>, "80001C0T\004", <incomplete sequence \344\254>) at ../plugins/nvme/fu-nvme-device.c:201
#3 0x00007fffdbddda64 in fu_nvme_device_parse_cns (self=0x5555558cc8a0, buf=0x7fffffffce70 "\\\034\\\034FI83Q060610103M66 BC501 NVMe SK hynix 128GB", ' ' <repeats 15 times>, "80001C0T\004", <incomplete sequence \344\254>, sz=4096, error=0x7fffffffe008) at ../plugins/nvme/fu-nvme-device.c:295
#4 0x00007fffdbddde68 in fu_nvme_device_setup (device=0x5555558cc8a0, error=0x7fffffffe008) at ../plugins/nvme/fu-nvme-device.c:376
#5 0x0000555555587850 in fu_device_setup (self=0x5555558cc8a0, error=0x7fffffffe008) at ../src/fu-device.c:2076
#6 0x0000555555587412 in fu_device_open (self=0x5555558cc8a0, error=0x7fffffffe008) at ../src/fu-device.c:1920
#7 0x000055555558aa88 in fu_device_locker_new_full (device=0x5555558cc8a0, open_func=0x5555555872cb <fu_device_open>, close_func=0x555555587424 <fu_device_close>, error=0x7fffffffe008)
at ../src/fu-device-locker.c:154
#8 0x000055555558a925 in fu_device_locker_new (device=0x5555558cc8a0, error=0x7fffffffe008) at ../src/fu-device-locker.c:104
#9 0x00007fffdbddc4cd in fu_plugin_udev_device_added (plugin=0x5555558a6420, device=0x5555558c6300, error=0x7fffffffe008) at ../plugins/nvme/fu-plugin-nvme.c:24
#10 0x0000555555592cbf in fu_plugin_runner_udev_device_added (self=0x5555558a6420, device=0x5555558c6300, error=0x7fffffffe070) at ../src/fu-plugin.c:1281
#11 0x000055555557f0a8 in fu_engine_udev_device_add (self=0x5555557f9840, udev_device=0x5555558e5900) at ../src/fu-engine.c:3491
#12 0x000055555557f480 in fu_engine_enumerate_udev (self=0x5555557f9840) at ../src/fu-engine.c:3555
#13 0x0000555555580fc6 in fu_engine_load (self=0x5555557f9840, error=0x7fffffffe2c8) at ../src/fu-engine.c:4117
#14 0x0000555555566567 in fu_util_start_engine (priv=0x5555557eeb20, error=0x7fffffffe2c8) at ../src/fu-tool.c:138
#15 0x00005555555674e2 in fu_util_get_devices (priv=0x5555557eeb20, values=0x7fffffffe5d8, error=0x7fffffffe2c8) at ../src/fu-tool.c:490
#16 0x0000555555566aff in fu_util_run (priv=0x5555557eeb20, command=0x7fffffffe81a "get-devices", values=0x7fffffffe5d8, error=0x7fffffffe2c8) at ../src/fu-tool.c:242
#17 0x000055555556a514 in main (argc=2, argv=0x7fffffffe5c8) at ../src/fu-tool.c:1445
```
EC23 is the last version that will be supported on board 4 SKUs with
base PD firmware versions 18+.
* If on EC23 already, don't mark the device as updatable anymore.
* Flashing EC24 or later when currently on EC 22 or less will potentially
cause bricked docks that can't enumerate, so prevent this scenario
during update path.
The unifying version numbers are of the form 'RQR24.00_B0000' which means we
have to force the plugin to 'plain' version format to avoid stripping out the
non-semver chars.
Fixes https://github.com/hughsie/fwupd/issues/1018
The udev plugin is somewhat special as it uses a non-subclassed FuDevice that
never gets 'opened'.
This means that we never automatically call fu_device_setup() and thus the
instance IDs are not converted into GUIDs before the device is added.
The checksum is now stored as the very last flash descriptor, so we need to pad
the SREC data to include the 'missing' data range. As we're doing that, we
should optimize like the Wacom updater does and skip writing descriptors that
are unused.
This also allows us to write mixed-endian structures and adds tests. As part of
this commit we've also changed the API of something that's not yet been in any
tarball release, so no pitchforks please.
This allows hardware from OEMs to *not* match generic firmware supplied by the
device manufacturer. The idea being, that the OEM will supply firmware that
will actually work on the device.
Based on a patch from Mario Limonciello, many thanks.
Similar to NVME, ATA drives distributed by Dell have special values
that should be used to designate fwupd GUIDs and only run correct
firmware.
When detecting Dell GUIDs remove the standard fwupd GUIDs. "Generic"
firmware targeted to those GUIDs will fail to install.
During download and activation we have to reset the drive to apply the new
firmware. If the kernel gets an unexpected ATA reset then it might panic.
Default to activating the command on the next drive power-up to be safe.
Many thanks to the Dell storage team for the advice.
A device that has gone through a fastboot update may need more than
the previous default of 10s to come back up. Just use a much longer
value to make sure it's detected properly.
Signed-off-by: Richard Hughes <richard@hughsie.com>
Splitting the file into lines does increase memory usage, but allows us to use
a much simpler parser design. This is just like we fixed IHEX a few weeks ago.
