Add the missing static keyword present in the declaration.
Reviewed by: melifaro
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D27024
Currently there is no locking done to protect this structure. It is
likely okay due to the low-volume nature of IGMP, but allows for
the possibility of underflow. This appears to be one of the only
holdouts of the conversion to counter(9) which was done for most
protocol stat structures around 2013.
This also updates the visibility of this stats structure so that it can
be consumed from elsewhere in the kernel, consistent with the vast
majority of VNET_PCPUSTAT structures.
Reviewed by: kp
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D27023
Under specific conditions, a window update can be sent with
outdated SACK information. Some clients react to this by
subsequently delaying loss recovery, making TCP perform very
poorly.
Reported by: chengc_netapp.com
Reviewed by: rrs, jtl
MFC after: 2 weeks
Sponsored by: NetApp, Inc.
Differential Revision: https://reviews.freebsd.org/D24237
The goal of the fib support is to provide multiple independent
routing tables, isolated from each other.
net.add_addr_allfibs default tries to shift gears in the opposite
direction, unconditionally inserting all addresses to all of the fibs.
There are use cases when this is necessary, however this is not a
default expected behaviour, especially compared to other implementations.
Provide WARNING message for the setups with multiple fibs to notify
potential users of the feature.
Differential Revision: https://reviews.freebsd.org/D26076
The ZIL will be opened on the first write, not earlier.
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Mariusz Zaborski <oshogbo@vexillium.org>
OpenZFS Pull Request: https://github.com/openzfs/zfs/pull/11152
PR: 250934
[PowerPC] Skip combining (uint_to_fp x) if x is not simple type
Current powerpc64le backend hits
```
Combining: t7: f64 = uint_to_fp t6
llc: llvm-project/llvm/include/llvm/CodeGen/ValueTypes.h:291:
llvm::MVT llvm::EVT::getSimpleVT() const: Assertion `isSimple() &&
"Expected a SimpleValueType!"' failed.
```
This patch fixes it by skipping combination if `t6` is not simple
type.
Fixed https://bugs.llvm.org/show_bug.cgi?id=47660.
Reviewed By: #powerpc, steven.zhang
Differential Revision: https://reviews.llvm.org/D88388
This should fix the llvm assertion mentioned above when building the
following ports for powerpc64le:
* audio/traverso
* databases/percona57-pam-for-mysql
* databases/percona57-server
* emulators/citra
* emulators/citra-qt5
* games/7kaa
* graphics/dia
* graphics/mandelbulber
* graphics/pcl-pointclouds
* net-p2p/libtorrent-rasterbar
* textproc/htmldoc
Requested by: pkubaj
MFC after: 3 days
- map those IPv4 / IPv6 socket options which exist in FreeBSD
+ most of them visually verified to have the same type/layout of arguments
+ not tested with linux programs to behave as intended
- be more human readable for known options which are not handled
- be more verbose for unhandled socket message flags we know about
- print the jail ID in linux_msg if run in a jail
- add possibility to print debug message about known missing parts only once
- add multiple levels of sysctl linux.debug:
1: print debug messages, tell about unimplemented stuff (only once)
2: like 1, but also print messages about implemented but not tested
stuff (only once)
3+: like 2, but no rate limiting of messages
- increase default linux debug level from 1 to 3
We are a lot more verbose in as we need to be (e.g. some of the IP socket
options which are the same, and share the same memory layout, and are
believed to work). The reason is that we have no good testsuite to test those
linux-bits. The LTP or other test suites like the python one, are not fully
up to the task we need. As such the excessive messages about emulated but not
tested socket options.
IMO any MFC (possible, but most probably not by me) should set the default
debug level to 1.
Discussed with: trasz
imgact_binmisc matches magic/mask from imgp->image_header, which is only a
single page in size mapped from the first page of an image. One can specify
an interpreter that matches on, e.g., --offset 4096 --size 256 to read up to
256 bytes past the mapped first page.
The limitation is that we cannot specify a magic string that exceeds a
single page, and we can't allow offset + size to exceed a single page
either. A static assert has been added in case someone finds it useful to
try and expand the size, but it does seem a little unlikely.
While this looks kind of exploitable at a sideways squinty-glance, there are
a couple of mitigating factors:
1.) imgact_binmisc is not enabled by default,
2.) entries may only be added by the superuser,
3.) trying to exploit this information to read what's mapped past the end
would be worse than a root canal or some other relatably painful
experience, and
4.) there's no way one could pull this off without it being completely
obvious.
The first page is mapped out of an sf_buf, the implementation of which (or
lack thereof) depends on your platform.
MFC after: 1 week
Provide a way to ask for an opaque version string for a locale_t, so
that potential changes in sort order can be detected. Similar to
ICU's ucol_getVersion() and Windows' GetNLSVersionEx(), this API is
intended to allow databases to detect when text order-based indexes
might need to be rebuilt.
The CLDR version is extracted from CLDR source data by the Makefile
under tools/tools/locale, written into the machine-generated Makefile
under shared/colldef, passed to localedef -V, and then written into
LC_COLLATE file headers. The initial version is 34.0.
tools/tools/locale was recently updated to pull down 35.0, but the
output hasn't been committed under share/colldef yet, so that will
provide the first observable change when it happens. Other versioning
schemes are possible in future, because the format is unspecified.
Reviewed by: bapt, 0mp, kib, yuripv (albeit a long time ago)
Differential Revision: https://reviews.freebsd.org/D17166
Add a note about always recompiling all modules on every new kernel
change / update. In addition, suggest using /usr/local/sys/modules
so this happens automatically.
Lots of new unit-tests increase code coverage.
Lots of refactoring, cleanup and simlpification to reduce
code size.
Fixes for Bug 223564 and 245807
Updates to dirdeps.mk and meta2deps.py
access the socket send or receive buffer. This is not possible for
listening sockets since r319722.
Because send()/recv() calls fail on listening sockets, fail also ioctl()
indicating EINVAL.
PR: 250366
Reported by: Yong-Hao Zou
Reviewed by: glebius, rscheff
MFC after: 1 week
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D26897
Lots of new unit-tests increase code coverage.
Lots of refactoring, cleanup and simlpification to reduce
code size.
Fixes for Bug 223564 and 245807
Updates to dirdeps.mk and meta2deps.py
The offset we need to account for in the interpreter string comes in two
variants:
1. Fixed - macros other than #a that will not vary from invocation to
invocation
2. Variable - #a, which is substitued with the argv0 that we're replacing
Note that we don't have a mechanism to modify an existing entry. By
recording both of these offset requirements when the interpreter is added,
we can avoid some unnecessary calculations in the exec path.
Most importantly, we can know up-front whether we need to grab
calculate/grab the the filename for this interpreter. We also get to avoid
walking the string a first time looking for macros. For most invocations,
it's a swift exit as they won't have any, but there's no point entering a
loop and searching for the macro indicator if we already know there will not
be one.
While we're here, go ahead and only calculate the argv0 name length once per
invocation. While it's unlikely that we'll have more than one #a, there's no
reason to recalculate it every time we encounter an #a when it will not
change.
I have not bothered trying to benchmark this at all, because it's arguably a
minor and straightforward/obvious improvement.
MFC after: 1 week
Specifically this was causing the /dev/klog fd and the signal pipe
handling fd to get a sendmsg(2) called on them and always returned
[ENOTSOCK].
r310350 combined these sockets into the main socket list and properly
skipped AF_UNSPEC at the sendmsg(2) call but later in r344739 it was
broken such that these special sockets were no longer excluded since
the AF_UNSPEC check specifically excluded these special sockets. Only
these special sockets have sl_sa = NULL. The sl_family checks should
be redundant now but are left in case of future changes so the intent
is clearer.
MFC after: 2 weeks
This adds a dedicated counter updated with atomics when INVARIANTS
is used. As a side effect one can reliably determine the lock is held
for reading by at least one thread, but it's still not possible to
find out whether curthread has the lock in said mode.
This should be good enough in practice.
Problem spotted by avg.
This doesn't change anything at the moment since the out-of-order elements
were a pair of uint32_t, but future additions may have caused unnecessary
padding by following the existing precedent.
MFC after: 1 week
When using the ALT+CTRL+ESC sequence to break into kdb, the keyboard is
completely borked when you return. watch(8) shows that it's working, but
it's inserting escape sequences.
Further investigation revealed that VT_ALT_TO_ESC_HACK is the default and
directly conflicts with this sequence, so upon return from the debugger
ALKED is set.
If they triggered the break to debugger, it's safe to assume they didn't
mean to use VT_ALT_TO_ESC_HACK, so just unset it to reduce the surprise when
the keyboard seems non-functional upon return.
Reviewed by: tsoome
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D27109
If we hadn't been traced in the first place when syscallenter()
started executing, we can ignore TDB_USERWR. TDB_USERWR can get set,
sure, but if it does, it's because the debugger raced with the syscall,
and it cannot depend on winning that race.
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: EPSRC
Differential Revision: https://reviews.freebsd.org/D26585
This module handles relatively few execs (initial qemu-user-static, then
qemu-user-static handles exec'ing itself for binaries it's already running),
but all execs pay the price of at least taking the relatively expensive
sx/slock to check for a match when this module is loaded. Future work will
almost certainly swap this out for another lock, perhaps an rmslock.
The RLOCK/WLOCK phrasing was chosen based on what the callers are really
wanting, rather than using the verbiage typically appropriate for an sx.
MFC after: 1 week
We may want to reserve bits in the future for kernel-only use, so start
rejecting any that aren't the two that we're currently expecting from
userland.
MFC after: 1 week
- Bad whitespace in Makefile.
- Reordered headers, sys/ first.
- Annotated fatal/usage __dead2 to help `make analyze` out a little bit.
- Spell a couple of sizeof constructs as "nitems" and "howmany" instead.
MFC after: 1 week
Previously, non-preemptible epochs could not check; in_epoch() would always
fail, usually because non-preemptible epochs don't imply THREAD_NO_SLEEPING.
For default epochs, it's easy enough to verify that we're in the given
epoch: if we're in a critical section and our record for the given epoch
is active, then we're in it.
This patch also adds some additional INVARIANTS bookkeeping. Notably, we set
and check the recorded thread in epoch_enter/epoch_exit to try and catch
some edge-cases for the caller. It also checks upon freeing that none of the
records had a thread in the epoch, which may make it a little easier to
diagnose some improper use if epoch_free() took place while some other
thread was inside.
This version differs slightly from what was just previously reviewed by the
below-listed, in that in_epoch() will assert that no CPU has this thread
recorded even if it *is* currently in a critical section. This is intended
to catch cases where the caller might have somehow messed up critical
section nesting, we can catch both if they exited the critical section or if
they exited, migrated, then re-entered (on the wrong CPU).
Reviewed by: kib, markj (both previous version)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D27098
Notably, streamline error paths through the existing 'done' label, making it
easier to quickly verify correct cleanup.
Future work might add a kernel-only flag to indicate that a interpreter uses
#a. Currently, all executions via imgact_binmisc pay the penalty of
constructing sname/fname, even if they will not use it. qemu-user-static
doesn't need it, the stock rc script for qemu-user-static certainly doesn't
use it, and I suspect these are the vast majority of (if not the only)
current users.
MFC after: 1 week
Improve the output of the recently often experienced debug message in order
to gather further data.
PR: 237666
Reviewed by: hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D27108
Move dtrace SDT definitions into linux_common module code. Also, build
linux_dummy.c into the linux_common kld -- we don't need separate
versions of these stubs for 32- and 64-bit emulation.
Reported by: several
PR: 250897
Discussed with: emaste, trasz
Tested by: John Kennedy, Yasuhiro KIMURA, Oleg Sidorkin
X-MFC-With: r367395
Differential Revision: https://reviews.freebsd.org/D27124
According to code comments the original motivation was to allow for
malloc_type_internal changes without ABI breakage. This can be trivially
accomplished by providing spare fields and versioning the struct, as
implemented in the patch below.
The upshots are one less memory indirection on each alloc and disappearance
of mt_zone.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D27104
vt_generate_cons_palette() does take max values of RGB component colours, not
mask. Also we need to set info->fb_cmsize, or vt_fb_init() will re-initialize
the info->fb_cmap.
This brings its 'struct syscall_args' in sync with other architectures.
Reviewed by: bdragon, jhibbits
MFC after: 2 weeks
Sponsored by: EPSRC
Differential Revision: https://reviews.freebsd.org/D26605
While here, use MAXARGS. This brings its 'struct syscall_args' in sync
with most other architectures.
Reviewed by: arichardson, brooks
MFC after: 2 weeks
Sponsored by: EPSRC
Differential Revision: https://reviews.freebsd.org/D26619
This fixes a potential crash in firmware 1.25.0.0 on the passive open
side during TOE operation.
Obtained from: Chelsio Communications
MFC after: 1 week
Sponsored by: Chelsio Communications
Fix build errors introduced by r367417 and r367390:
- Guard label reached only by powerpc64
- Guard vm_reserv_level_iffullpop call, that is not defined on powerpc
variants that don't support superpages
- Add missing hwpmc file, for when hwpmc is built into kernel
