Instead of crashing the user process when a D-ERAT multihit is detected, try
to flush the ERAT, and continue. This machine check indicates a likely PMAP
invalidation shortcoming that will need to be addressed, but it's
recoverable, so just recover. The recovery is pmap-specific to flush the
ERAT, so add a pmap function to do so, currently only implemented by the
POWER9 radix pmap.
This is consistent with what we are doing for close(2) and it makes
it a bit easier to follow when debugging file descriptor operations.
i.e. many other syscalls are decoding fds as integers rather than
base 16 numbers.
MFC after: 1 week
Comparing fsid_t objects requires internal knowledge of the fsid structure
and yet this is duplicated across a number of places in the code.
Simplify by creating a fsidcmp function (macro).
Reviewed by: mjg, rmacklem
Approved by: mav (mentor)
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D24749
Changes since 20181221 are mostly portability related
hence the large gap in versions imported.
There are however some bug fixes, and a rework of filemon handling.
In NetBSD make/filemon/filemon_ktrace.c allows use of fktrace
and elimination of filemon(4) which has not had the TLC it needs.
FreeBSD filemon(4) is in much better shape, so bmake/filemon/filemon_dev.c
allows use of that, with a bit less overhead than the ktrace model.
Summary of changes from ChangeLog
o str.c: empty string does not match % pattern
plus unit-test changes
o var.c: import handling of old sysV style modifier using '%'
o str.c: refactor brk_string
o meta.c: meta_oodate, CHECK_VALID_META is too aggressive for CMD
a blank command is perfectly valid.
o meta.c: meta_oodate, check for corrupted meta file
earlier and more often.
* meta.c: meta_compat_parent check for USE_FILEMON
patch from Soeren Tempel
o meta.c: fix compat mode, need to call meta_job_output()
o job.c: extra fds for meta mode not needed if using filemon_dev
o meta.c: avoid passing NULL to filemon_*() when meta_needed()
returns FALSE.
o filemon/filemon_{dev,ktrace}.c: allow selection of
filemon implementation. filemon_dev.c uses the kernel module
while filemon_ktrace.c leverages the fktrace api available in
NetBSD. filemon_ktrace.c can hopefully form the basis for
adding support for other tracing mechanisms such as strace on
Linux.
o meta.c: when target is out-of-date per normal make rules
record value of .OODATE in meta file.
o parse.c: don't pass NULL to realpath(3)
some versions cannot handle it.
o parse.c: ParseDoDependency: free paths rather than assert
plus more unit-tests
- Use enc_xform_aes_xts.setkey() directly instead of duplicating the code
now that it no longer calls malloc().
- Rather than bringing back all of xform_userland.h, add a conditional
#include of <stand.h> to xform_enc.h.
- Update calls to encrypt/decrypt callbacks in enc_xform_aes_xts for
separate input/output pointers.
Pointy hat to: jhb
It previously returned the object map base address, while all other
ELF operating systems return load offset, i.e. the difference between
map base and the link base.
Explain the meaning of the field in the man page.
Stop filling the mips-only l_offs member, which is apparently unused.
PR: 246561
Requested by: Damjan Jovanovic <damjan.jov@gmail.com>
Reviewed by: emaste, jhb, cem (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D24918
The flush is needed to prevent cross-process ret2spec, which is not handled
on kernel entry if IBPB is enabled but SMEP is present.
While there, add i386 RSB flush.
Reported by: Anthony Steinhauser <asteinhauser@google.com>
Reviewed by: markj, Anthony Steinhauser
Discussed with: philip
admbugs: 961
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
- Consistently use 'void *' for key schedules / key contexts instead
of a mix of 'caddr_t', 'uint8_t *', and 'void *'.
- Add a ctxsize member to enc_xform similar to what auth transforms use
and require callers to malloc/zfree the context. The setkey callback
now supplies the caller-allocated context pointer and the zerokey
callback is removed. Callers now always use zfree() to ensure
key contexts are zeroed.
- Consistently use C99 initializers for all statically-initialized
instances of 'struct enc_xform'.
- Change the encrypt and decrypt functions to accept separate in and
out buffer pointers. Almost all of the backend crypto functions
already supported separate input and output buffers and this makes
it simpler to support separate buffers in OCF.
- Remove xform_userland.h shim to permit transforms to be compiled in
userland. Transforms no longer call malloc/free directly.
Reviewed by: cem (earlier version)
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D24855
Match other architectures and print CPU information during
cpu_startup(). In particular, this prints the information after the
message buffer is initialized which allows it to be retrieved after
boot via dmesg(8).
While here, add some extern declarations to <machine/md_var.h> in
place of duplicated declarations in various source files.
Reviewed by: brooks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24936
Rather than walking all of cpu_switch looking for the sequence of
instructions to patch, add a global label at the location that needs
the patch applied.
Reviewed by: brooks, Alfredo Mazzinghi <alfredo.mazzinghi_cl.cam.ac.uk>
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24931
Some time after r338418, I believe with -Os/-Oz -ffunction-sections
-fdata-sections, the bootprog_interp variable that held our "$Interpreter:"
marker started getting strip from all loaders, with exception to userboot
since it used bootprog_interp to determine what flavor of userboot it was.
At some point, it had been brought to my attention that this was no longer
working and I had worked up some potential solutions to use the variable
that involved printing it out. My vague recollection is that this was
rejected, and I forgot to explore the alternatives; I cannot find records of
this discussion anymore.
Fast forward to present day, Andrew reported that it was non-functional and
offered (effectively) this patch (sans comment) to stop the compiler from
optimizing it out by assigning it to a volatile variable. This removes
concerns about user-facing change while retaining the interpreter marker.
Furthermore, it could certainly be uglier.
Reported and tested by: Andrew Gierth <andrew_tao173.riddles.org.uk>
MFC after: 3 days
Update libarchive to 3.4.3
Relevant vendor changes:
PR #1352: support negative zstd compression levels
PR #1359: improve zstd version checking
PR #1348: support RHT.security.selinux from GNU tar
PR #1357: support for archives compressed with pzstd
PR #1367: fix issues in acl tests
PR #1372: child handling cleanup
PR #1378: fix memory leak from passphrase callback
These functions were added in 2001 and are currently unused.
copyinfrom() looks to have never been used. copyinstrfrom() was used
for two weeks before the code was refactored to remove it's sole use.
Reviewed by: brooks, kib
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24928
-development is long and awkward, and is also inconsistent with prior art
from the Linux world, which uses -dev (Debian) or -devel (Red Hat). Follow
the Debian convention, and similarly for debug info packages.
Also remove redundant pkgbase development tag from includes. We already tag
include files with package=runtime,dev; there is no need to separately tag
them as dev.
Discussed with: bapt
Reviewed by: manu
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24139
Changes since 20181221 are mostly portability related
hence the large gap in versions imported.
There are however some bug fixes, and a rework of filemon handling.
In NetBSD make/filemon/filemon_ktrace.c allows use of fktrace
and elimination of filemon(4) which has not had the TLC it needs.
FreeBSD filemon(4) is in much better shape, so bmake/filemon/filemon_dev.c
allows use of that, with a bit less overhead than the ktrace model.
Summary of changes from ChangeLog
o str.c: empty string does not match % pattern
plus unit-test changes
o var.c: import handling of old sysV style modifier using '%'
o str.c: refactor brk_string
o meta.c: meta_oodate, CHECK_VALID_META is too aggressive for CMD
a blank command is perfectly valid.
o meta.c: meta_oodate, check for corrupted meta file
earlier and more often.
* meta.c: meta_compat_parent check for USE_FILEMON
patch from Soeren Tempel
o meta.c: fix compat mode, need to call meta_job_output()
o job.c: extra fds for meta mode not needed if using filemon_dev
o meta.c: avoid passing NULL to filemon_*() when meta_needed()
returns FALSE.
o filemon/filemon_{dev,ktrace}.c: allow selection of
filemon implementation. filemon_dev.c uses the kernel module
while filemon_ktrace.c leverages the fktrace api available in
NetBSD. filemon_ktrace.c can hopefully form the basis for
adding support for other tracing mechanisms such as strace on
Linux.
o meta.c: when target is out-of-date per normal make rules
record value of .OODATE in meta file.
o parse.c: don't pass NULL to realpath(3)
some versions cannot handle it.
o parse.c: ParseDoDependency: free paths rather than assert
plus more unit-tests
After r358443 the vnode object lock no longer synchronizes concurrent
zfs_getpages() and zfs_write() (which must update vnode pages to
maintain coherence). This created a potential deadlock between ZFS
range locks and VM page busy locks: a fault on a mapped file will cause
the fault page to be busied, after which zfs_getpages() locks a range
around the file offset in order to map adjacent, resident pages;
zfs_write() locks the range first, and then must busy vnode pages when
synchronizing.
Solve this by adding a non-blocking mode for ZFS range locks, and using
it in zfs_getpages(). If zfs_getpages() fails to acquire the range
lock, only the fault page will be populated.
Reported by: bdrewery
Reviewed by: avg
Tested by: pho
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24839
Libarchive 3.4.3
Relevant vendor changes:
PR #1352: support negative zstd compression levels
PR #1359: improve zstd version checking
PR #1348: support RHT.security.selinux from GNU tar
PR #1357: support for archives compressed with pzstd
PR #1367: fix issues in acl tests
PR #1372: child handling cleanup
PR #1378: fix memory leak from passphrase callback
This change adds Hyper-V socket feature in FreeBSD. New socket address
family AF_HYPERV and its kernel support are added.
Submitted by: Wei Hu <weh@microsoft.com>
Reviewed by: Dexuan Cui <decui@microsoft.com>
Relnotes: yes
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D24061
Fix returning from xenstore device with locks held, which triggers the
following panic:
# cat /dev/xen/xenstore
^C
userret: returning with the following locks held:
exclusive sx evtchn_ringc_sx (evtchn_ringc_sx) r = 0 (0xfffff8000650be40) locked @ /usr/src/sys/dev/xen/evtchn/evtchn_dev.c:262
Note this is not a security issue since access to the device is
limited to root by default.
Sponsored by: Citrix Systems R&D
MFC after: 1 week
Previously the driver handled the bit within itself, but did not expose
the state change to net80211 and interface layers.
This change uses net80211 KPI for rfkill signaling.
The code is modeled after similar code in iwn and wpi.
Reviewed by: adrian
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24923
radio is disabled through the communication device toggle key (also known
as the RF raidio kill button). Only the CTRL-EVENT-DISCONNECTED will be
issued.
Submitted by: avg
Reported by: avg
MFC after: 1 week
x86 needs delayed TLB invalidation because invalidation requires an
expensive IPI. PowerPC has had a TLB invalidation instruction since the
POWER1 in 1990, so there's no need to delay anything.
Otherwise accept filters compiled into the kernel do not preempt
preloaded accept filter modules. Then, the preloaded file registers its
accept filter module before the kernel, and the kernel's attempt fails
since duplicate accept filter list entries are not permitted. This
causes the preloaded file's module to be released, since
module_register_init() does a lookup by name, so the preloaded file is
unloaded, and the accept filter's callback points to random memory since
preload_delete_name() unmaps the file on x86 as of r336505.
Add a new ACCEPT_FILTER_DEFINE macro which wraps the accept filter and
module definitions, and ensures that a module version is defined.
PR: 245870
Reported by: Thomas von Dein <freebsd@daemon.de>
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
The DIC and IDC bits in the CTR_EL0 register signal to the kernel when it
can relax the instruction cache synchronisation operations. The IDC bit
means we can relax cleaning the data cache to the point of unification
while the DIC bit means we don't need to invalidate the instruction cache
for data coherence. In both cases an appropriate barrier is still needed.
For now only implement the case where both bits are set, as is the case
on the Neoverse-N1 as used in the Amazon AWS Graviton 2 CPU. Note that
this behaviour is a optional on the N1 so we may later need to implement
only one or the other bit being set.
There is a tunable to disable each flag on boot.
Testing on a 4 core Graviton 2 instance found a significant improvement
in sys and real time when running "make buildkernel -j4", with no
significant difference in user time.
Reviewed by: markj
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D24853
Previously we would create an isrc for each MSI/MSI-X interrupt. This
causes issues for other interrupt sources in the system, e.g. a GPIO
driver, as they may be unable to allocate interrupts. This works around
this by allocating the isrc only when needed.
Reported by: alisaidi@amazon.com
Reviewed by: mmel
Sponsored by: Innovaate UK
Differential Revision: https://reviews.freebsd.org/D24876
If certctl is installed on the system we're configuring, do a certctl
rehash.
Note that certctl may not be present if the world we've installed was built
either WITHOUT_OPENSSL or WITHOUT_CAROOT. In this scenario, we don't
currently see if the host has a certctl as this may be an indication that
the system *shouldn't* have certs installed into /etc/ssl.
Reviewed by: allanjude, dteske
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D24640
Before this change, swapon(8) implied that -F works as a standalone option,
which is not the case and would produce a usage message. This change extends
the description of the -F option to mention that -a is required with it.
PR: 238551
Submitted by: Christian Baltini
MFC after: 5 days
