cxgbev(4): Compare at most 16 bytes of the Ethernet header when trying
to coalesce tx work requests.
Note that Coverity will still treat this as an out-of-bounds access. We
do want to compare 16B starting from ethmacdst but cmp_l2hdr was was
going beyond that by 2B.
struct _ipfw_dyn_rule is defined as packed, and as a result, its
uint64_t fields are misaligned on some 32-bit platforms. Since
pr_u64() is explicitly supposed to handle this case, avoid using a
uint64_t * for the input pointer to make sure that the compiler won't
(correctly) warn about the misalignment.
ipfw(8): Fix most warnings with the default WARNS level.
- Add missing const and static qualifiers.
- Avoid shadowing the global "co" by renaming it to "g_co".
- Avoid mixing signedness in loop bound checks.
- Leave -Wcast-align warnings disabled for now.
lseek(2): Document the seek behavior better and update the POSIX compliance
In certain situations lseek(2) will return successful although if no seek
was performed. This can happen when operating on devices that don't support
seeking (older tape drives) or when operating on changeable media devices
(such as DVD or Blu-ray devices) without a medium inserted.
Document this within the man page and update the POSIX compliance while here.
Don't print VNET pointer when initializing dummynet
When dummynet initializes it prints a debug message with the current VNET
pointer unnecessarily revealing kernel memory layout. This appears to be left
over from when the first pieces of vimage support were added.
Fix invalid VHDX generation for image larger than 4Gb
- Part of BAT payload location was lost due to invalid
BAT entry encoding type (32 bits instead of 64 bits)
- The sequence of PB/SB entries in BAT was broken due to
off-by-one index check. It worked for smaller than
4Gb because there were no SB entries in BAT.
Don't leave `path` behind when executing `:chflags_success`
Prior to this change a `SF_IMMUTABLE` chflagsat(2)'ed file (`path`) was left
behind, which sabotaged kyua(1) from being able to clean up the work directory,
This resulted in unnecessary work for folks having to clean up the work
directory on non-disposable systems, which defaults to `/tmp`. Use `UF_OFFLINE`
instead of `SF_IMMUTABLE`, in part because setting `SF_IMMUTABLE` isn't relevant
to the test and `SF_IMMUTABLE` cannot be cleared at all securelevels, as pointed
out by @asomers.
Additional work is required to catch cases like this upfront in the future to
avoid tester headache. See PR # 247765 for more details/followup.
(Re)activate SCTP system calls when compiling SCTP support into the kernel
r363079 introduced the possibility of loading the SCTP stack as a module in
addition to compiling it into the kernel. As part of this, the registration
of the system calls was removed and put into the loading of the module.
Therefore, the system calls are not registered anymore when compiling the
SCTP into the kernel. This patch addresses that.
Add destructor for the rib subscription system to simplify users code.
Subscriptions are planned to be used by modules such as route lookup engines.
In that case that's the module task to properly unsibscribe before detach.
However, the in-kernel customer - inet6 wants to track default route changes.
To avoid having inet6 store per-fib subscriptions, handle automatic
destruction internally.
It is documented as a raw hardware-based clock not subject to NTP or
incremental adjustments. With this "not as precise as CLOCK_MONOTONIC"
description in mind, map it to our CLOCK_MONOTNIC_FAST (the same
mapping as for the linux CLOCK_MONOTONIC_COARSE).
This is needed for the webcomponent of steam (chromium) and some
other steam component or game.
The linux-steam-utils port contains a LD_PRELOAD based fix for this.
There this is mapped to CLOCK_MONOTONIC.
As an untrained ear/eye (= the majority of people) is normaly not
noticing a difference of jitter in the 10-20 ms range, specially
if you don't pay attention like for example in a browser session
while watching a video stream, the mapping to CLOCK_MONOTONIC_FAST
seems more appropriate than to CLOCK_MONOTONIC.
Reverse the processing order of assigned clocks property.
Linux processes these clocks in reverse order and some DT relies
on this fact. For example, the frequency setting for a given PLL
is the last in the list, preceded by the frequency setting of its
following divider or so...
Key changes include reduced noise at end of failed build log
and avoid evaluation of unnecessary terms in conditionals.
In META MODE; a target flagged .META is out-of-date if meta file
is missing
Make linprocfs(5) report correct tty number in /proc/<PID>/stat.
Fixes sudo (sudo-1.8.21p2-3ubuntu1.2); previously would fail
with "sudo: no tty present and no askpass program specified".
Reviewed by: kib, emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25588
Make linux stat(2) return the same st_dev for every devfs instance.
The reason for this is to work around an idiosyncrasy of glibc
getttynam(3) implementation: it checks whether st_dev returned for
fd 0 is the same as st_dev returned for the target of /proc/self/fd/0
symlink, and with linux chroots having their own devfs instance,
the check will fail if you chrooted into it.
PR: kern/240767
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25559
The change adds an SCTP mode akin to UDP mode. This is handy for doing
smoke testing of SCTP.
Use a long option to minimize the risk of option conflicts with OpenBSD.
For bonus points, this change unbreaks --no-tcpopt by adding a missing
case required by getopt_long().
Reviewed by: delphij, tuexen
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25610
Provide support for building SCTP as a loadable module.
With this change, a kernel compiled with "options SCTP_SUPPORT" and
without "options SCTP" supports dynamic loading of the SCTP stack.
Currently sctp.ko cannot be unloaded since some prerequisite teardown
logic is not yet implemented. Attempts to unload the module will return
EOPNOTSUPP.
Discussed with: tuexen
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21997
Implement the bitmap_subset() function in the LinuxKPI. This function
checks if the bitmap pointed to by the first argument is a subset of
the bitmap pointed to by the second argument. The function returns one
on success and zero on failure.
Implement the array_size() function in the LinuxKPI. This function
basically multiplies its two arguments and returns SIZE_MAX if the
result overflows the size_t type. Else the product of the two
arguments is returned.
Bump the FreeBSD_version to mitigate issues with existing
implementation of array_size() in drm-devel-kmod.
Fix a use-after-free bug for the userland stack. The kernel
stack is not affected.
Thanks to Mark Wodrich from Google for finding and reporting the
bug.
This fixes a coredump with NetBSD guests when XHCI is configured.
On seeing the AC64 flag clear, the NetBSD XHCI driver was only writing
to the lower 32-bits of 64-bit physical address registers. The emulation
relies on a write to the hi 32-bits to calculate a host virtual address
for internal use, and has always supported 64-bit addressing.
All other guests were seen to write to both the lo- and hi- address
registers, regardless of the AC64 setting.
Lack of SHM_GROW_ON_WRITE is actively breaking Python's memfd_create tests,
so go ahead and implement it. A future change will make memfd_create always
set SHM_GROW_ON_WRITE, to match Linux behavior and unbreak Python's tests
on -CURRENT.
eugen [Fri, 10 Jul 2020 00:24:42 +0000 (00:24 +0000)]
Optimize install(1) a bit.
Currently, "install -s -S" behaviour is inefficient for upgrade.
First it finds that destination file already exists and copies
source file to temporary file. Then it calls strip(1)
with name of temporary file as single agrument and our strip(1) creates
another temporary file in the /tmp (or TMPDIR) making another copy
that is finally copied to DESTDIR third time.
Meantime, strip(1) has an option "-o dst" to specify destination
so install(1) is allowed to skip initial copying from obj to DESTDIR.
This change makes it do so.
Take a look at https://reviews.freebsd.org/D25551 for details
and efficiency numbers (in short: upto 32% gained for installword).
On 32-bit platforms, this expands the shm_size to a 64-bit quantity and
resolves a mismatch between the shmfd size and underlying vm_object size.
The implementation did not account for this kind of mismatch.
INTOFF postpones SIGINT processing and INTON enables it again. This is
important so an interactive shell can return to the top level prompt when
Ctrl+C is pressed.
Given that INTON is automatically done when a builtin completes, the part
where onsig() ignores suppressint when in_dotrap is true is both unnecessary
and unsafe. If the trap is for some other signal than SIGINT, arbitrary code
could have been interrupted.
Historically, INTOFF remained in effect for longer.
Avoid copying out kernel pointers from msgctl(IPC_STAT).
While this behaviour is harmless, it is really just an artifact of the
fact that the msgctl(2) implementation uses a user-visible structure as
part of the internal implementation, so it is not deliberate and these
pointers are not useful to userspace. Thus, NULL them out before
copying out, and remove references to them from the manual page.
Reported by: Jeffball <jeffball@grimm-co.com>
Reviewed by: emaste, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25600
andrew [Thu, 9 Jul 2020 16:28:13 +0000 (16:28 +0000)]
Add a driver to talk to the Raspberry Pi firmware
Communicating with the Raspberry Pi firmware is currently handled by each
driver calling into the mbox driver, however the device tree is structured
such that they should be calling into a firmware driver.
Add a driver for this node with an interface to communicate to the firmware
via the mbox interface.
There is a sysctl to get the firmware revision. This is a unix date so can
be parsed with:
root@generic:~ # date -j -f '%s' sysctl -n dev.bcm2835_firmware.0.revision
Tue Nov 19 16:40:28 UTC 2019
Reviewed by: manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25572
Optimize flushing of receive queues.
This addresses an issue found and reported for the userland stack in
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21243
manu [Wed, 8 Jul 2020 19:14:44 +0000 (19:14 +0000)]
twsi: Fix for > Allwinner A20
Every revision of twsi after the A20 have a bug where we need to
write again the control register after each interrupts. We also need
to add some delay before writing to this register, a simple read of the
same register does the job so do that.
Also fix the case when we have finish sending all the bytes, it only worked
for 1 byte transfer (the same kind that we do for talking to the PMIC on A20
boards).
While here add more debug messages and rework some of them.
This was tested by talking to a AT23C32 eeprom and a DS3231 RTC from an
H3 and A20 board.
(most of this by rillig@)
o lots of style and white-space cleanup
o lots more unit tests for variable modifiers
o simplified description of some functions
o str.c: refactor Str_Match
o var.c: debugging output for :@
constify VarModify parameter
fix :hash modifier on 16-bit platforms
remove unnecessary forward declarations
refactor ApplyModifier_SysV to have less indentation
simplify code for :E and :R
clean up code for :H and :T
refactor ApplyModifiers
* var.c: we need stdint.h on some platforms to get uint32_t
* unit-test/Makefile: we need to supress the specific error
for RE substitution error in modmisc, since it varies accross
different OS.
manu [Wed, 8 Jul 2020 17:14:44 +0000 (17:14 +0000)]
extres/syscon_generic: Make device quiet if not in boot verbose
On some boards there is a lot of of syscon node that are unused as
more specific drivers is probed before, no need to flood the console
for the mostly-unused generic ones.
geli does all of its crypto operations in a separate thread pool, so
g_eli_start, g_eli_read_done, and g_eli_write_done don't actually do very
much work. Enabling direct dispatch eliminates the g_up/g_down bottlenecks,
doubling IOPs on my system. This change does not affect the thread pool.
dim [Wed, 8 Jul 2020 16:50:47 +0000 (16:50 +0000)]
Merge commit 065fc1eafe7c from llvm git (by Richard Smith):
PR45521: Preserve the value kind when performing a standard
conversion sequence on a glvalue expression.
If the sequence is supposed to perform an lvalue-to-rvalue
conversion, then one will be specified as the first conversion in the
sequence. Otherwise, one should not be invented.
This should fix clang crashing with "can't implicitly cast lvalue to
rvalue with this cast kind", followed by "UNREACHABLE executed at
/usr/src/contrib/llvm-project/clang/lib/Sema/Sema.cpp:538!", when
building recent versions of Ceph, and the CPAN module SYBER/Date-5.2.0.
Reported by: Willem Jan Withagen <wjw@digiware.nl>, eserte12@yahoo.de
PR: 245530, 247812
MFC after: 3 days
Improve handling of PKTDROP chunks. This includes the input validation
to address two issues found by ossfuzz testing the userland stack:
* https://oss-fuzz.com/testcase-detail/5387560242380800
* https://oss-fuzz.com/testcase-detail/4887954068865024
and adding support for I-DATA chunks in addition to DATA chunks.
projects / FreeBSD / FreeBSD.git / log