Otherwise we might dereference NULL vp->v_data after
VP_TO_TMPFS_NODE().
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
PowerISA 2.07 and PowerISA 3.0 both specify special NOPs for priority
adjustments, with "medium" priority being normal. We had been setting
medium-low as our normal priority. Rather than guess each time as to what
we want and the right NOP, wrap them in inline functions, and replace the
occurrances of the NOPs with the functions. Also, make DELAY() drop to very
low priority while waiting, so we don't burn CPU.
Coupled with r346143, this shaves off a modest 5-8% on buildworld times with
-j72. There may be more room for improvement with judicious use of these
NOPs.
MFC after: 2 weeks
The POWER9 documentation specifies that levels 0-3 are the 'lightest' sleep
level, meaning lowest latency and with no state loss. However, state 3 is
not implemented, and is instead reserved for future chips. This now
properly configures the PSSCR, specifying state 2 as the lowest level to
enter, but request level 0 for quickest sleep level. If the OCC determines
that the CPU can enter states 1 or 2 it will trigger the transition to those
states on demand.
MFC after: 1 week
It was pointed out that manually loading a .dtb to be used rather than
relying on platform-specific method for loading .dtb will result in overlays
not being applied. This was true because overlay loading was hacked into
fdt_platform_load_dtb, rather than done in a way more independent from how
the .dtb is loaded.
Instead, push overlay loading (for now) out into an
fdt_platform_load_overlays. This method easily allows ubldr to pull in any
fdt_overlays specified in the ub env, and omits overlay-checking on
platforms where they're not tested and/or not desired (e.g. powerpc). If we
eventually stop caring about fdt_overlays from ubenv (if we ever cared),
this method should get chopped out in favor of just calling
fdt_load_dtb_overlays() directly.
Reported by: Manuel Stühn (freebsdnewbie freenet de)
In review D19876 ian@ has some proposed improvements to the
tools/boot/ci-qemu-test.sh script. Start specifying the location of
OVMF.fd fetched by the Cirrus-CI build in advance of those changes.
When leaving a multicast group, a hole may be created in the inpcb's
source filter and group membership arrays. To remove the hole, the
succeeding array elements are copied over by one entry. The multicast
code expects that a newly allocated array element is initialized, but
the code which shifts a tail of the array was leaving stale data
in the final entry. Fix this by explicitly reinitializing the last
entry following such a copy.
Reported by: syzbot+f8c3c564ee21d650475e@syzkaller.appspotmail.com
Reviewed by: ae
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D19872
Bound input file processing length to avoid the issue reported in [1]. For
simplicity, only allow regular file and character device inputs. For
character devices, only allow /dev/random (and /dev/urandom symblink).
32 bytes of random is perfectly sufficient to seed MD5; we don't need any
more. Users that want to use large files as seeds are encouraged to truncate
those files down to an appropriate input file via tools like sha256(1).
(This does not change the sort algorithm of sort -R.)
[1]: https://lists.freebsd.org/pipermail/freebsd-hackers/2018-August/053152.html
PR: 230792
Reported by: Ali Abdallah <aliovx AT gmail.com>
Relnotes: yes
When building libnv without a debug those arguments are no longer used
because assertions will be changed to NOP.
Submitted by: Mindaugas Rasiukevicius <rmind@netbsd.org>
MFC after: 2 weeks
When building libnv without a debug those arguments are no longer used
because assertions will be changed to NOP.
Submitted by: Mindaugas Rasiukevicius <rmind@netbsd.org>
MFC after: 2 weeks
If a custom block size requested, use it, otherwise revert to the previous logic
of using just a data size if it's less than MMC_BLOCK_SIZE, and MMC_BLOCK_SIZE otherwise.
Reviewed by: bz
Approved by: imp (mentor)
Differential Revision: https://reviews.freebsd.org/D19783
SDIO command CMD53 (IO_RW_EXTENDED) allows data transfers using blocks of 1-2048 bytes,
with a maximum of 511 blocks per request.
Extend mmc_data structure to properly describe such requests,
and initialize the new fields in kernel and userland consumers.
No actual driver changes happen yet, these will follow in the separate changes.
Reviewed by: bz
Approved by: imp (mentor)
Differential Revision: https://reviews.freebsd.org/D19779
RPI is using the firmware provided DTS since 12.0
Pandaboard works with the Linux DTS
RK* Exynos* and Meson*/Odroid* don't even work with current
source code, if someone wants to make them work again they
better use the Linux DTS.
was unlocked and yet the bucket-unlock flag was not
changed to false. This can cause a panic if INVARIANTS
is on and we go through the right path (though rare).
This fixes the correct bug :)
Reported by: syzbot+179a1ad49f3c4c215fa2@syzkaller.appspotmail.com
Reviewed by: tuexen@
Our home-rolled solution didn't quite capture all of the details, and we
didn't actually validate snapshot names at all. zfs_name_valid captures the
important details, but it doesn't necessarily expose the errors that we're
wanting to see in the be_validate_* functions. Validating lengths
independently, then the names, should make this a non-issue.
cache_lookup's documentation got dislocated by r324378. Relocate and expand
it.
Reviewed by: jhb, kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
While it is true that the ACPI spec says that the flag is only valid
on Extended Address Space Descriptors, examples of other descriptors
in the spec use the ProducerConsumer flag explicitly, and real
hardware uses it as well. In fact, even in the ASL of the Thunder X2
for which r330113 was a workaround, some devices use this flag on
non-Extended Address Space Descriptors correctly. Instead, only
ignore the flag for resources associated with the UART devices on the
Thunder X2 using the "ARMH0011" HID to identify these devices.
This should fix regressions from ignoring this flag in other contexts
such as Hyper-V.
PR: 235876
Reported by: Wei Hu <weh@microsoft.com>
Tested by: emaste (Thunder X2)
MFC after: 2 weeks
Provide a convenience function to avoid the hack with filling fake
struct vop_fsync_args and then calling vop_stdfsync().
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
If truncate(2) is performed on msdosfs file, which extends the file by
system-depended large amount, fs creates corresponding amount of dirty
delayed-write buffers, which can consume all buffers. Such buffers
cannot be flushed by the bufdaemon because the ftruncate() thread owns
the vnode lock. So the system runs out of free buffers, and even
truncate() thread starves, which means deadlock because it owns the
vnode lock.
Fix this by doing vnode fsync in extendfile() when low memory or low
buffers condition detected, which flushes all dirty buffers belonging
to the file being extended.
Note that the more usual fallback to bawrite() does not work
acceptable in this situation, because it would only allow one buffer
to be recycled. Other filesystems, most important UFS, do not allow
userspace to create arbitrary amount of dirty delayed-write buffers
without feedback, so bawrite() is good enough for them.
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
CPUs can use shared (RF_SHAREABLE) resources for the I/O port used for
entering and exiting C states. If this I/O port is included in an ACPI
system resource device, then this happens to still work, but if the port
wasn't part of a system resource device, only the first CPU could allocate
the I/O port and use C states since resource_list_reserve() was always
allocating the resource from nexus0 without RF_SHAREABLE. By avoiding
the reservation, the flags from the bus_alloc_resource() in the CPU driver
(which include RF_SHAREABLE) are honored.
PR: 236513
Reported by: stockhausen@collogia.de
Sleuthing by: avg
Reviewed by: avg
MFC after: 2 weeks
Some early PCIe chipsets are explicitly listed in the white-list to
enable use of the MMIO config space accesses, perhaps because ACPI
tables were not reliable source of the base MCFG address at that time.
For that chipsets, MCFG base was read from the known chipset MCFGbase
config register.
During very early stage of boot, when access to the PCI config space
is performed (see e.g. pci_early_quirks.c), we cannot map 255MB of
registers because the method used with pre-boot pmap overflows initial
kernel page tables.
Move fallback to read MCFGbase to the attachment method of the
x86/legacy device, which removes code duplication, and results in the
use of io accesses until MCFG is parsed or legacy attach called.
For amd64, pre-initialize cfgmech with CFGMECH_1, right now we
dynamically assign CFGMECH_1 to it anyway, and remove checks for
CFGMECH_NONE.
There is a mention in the Intel documentation for corresponding
chipsets that OS must use either io port or MMIO access method, but we
already break this rule by reading MCFGbase register, so one more
access seems to be innocent.
Reported by: longwitz@incore.de
PR: 236838
Reviewed by: avg (other version), jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D19833
1. Not all kernels have netmap(4) support. Check for netmap(4) support before
attempting to run the tests via the `PLAIN_REQUIRE_KERNEL_MODULE(..)` macro.
2. Libraries shouldn't be added to LDFLAGS; they should be added to LIBADD
instead. This allows the build system to evaluate dependencies for sanity.
3. Sort some of the Makefile variables per bsd.README.
1., in particular, will resolve failures when running this testcase on kernels
lacking netmap(4) support, e.g., the i386 GENERIC kernels on ^/stable/11 and
^/stable/12.
PR: 237129
Reviewed by: vmaffione
Approved by: emaste (mentor)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D19864
Final cleanup routines shouldn't be called from testcases; it should be called
from the testcase cleanup routine.
Furthermore, `geli_test_cleanup` should take care of cleaning up geli providers
and the memory disks used for the geli providers. `geli_test_cleanup` will always
be executed whereas the equivalent logic in `geli_test_body`, may not have been
executed if the test failed prior to the logic being run.
Prior to this change, the test case was trying to clean up `$md` twice: once in
at the end of the test case body function, and the other in the cleanup function.
The cleanup function logic was failing because there wasn't anything to clean up
in the cleanup function and the errors weren't being ignored.
This fixes FreeBSD test suite runs after r345864.
PR: 237128
Reviewed by: asomers, pjd
Approved by: emaste (mentor)
MFC with: r345864
Differential Revision: https://reviews.freebsd.org/D19854
