check hash to the superblock. If a check hash fails when an attempt
is made to mount a filesystem, the mount fails with EINVAL (Invalid
argument). This avoids a class of filesystem panics related to
corrupted superblocks. The hash is done using crc32c.
Check hases are added only to UFS2 and not to UFS1 as UFS1 is primarily
used in embedded systems with small memories and low-powered processors
which need as light-weight a filesystem as possible.
Reviewed by: kib
Tested by: Peter Holm
Sponsored by: Netflix
That commit is causing kernel panics in em(4), so this will be reverted
until those are fixed.
Reported by: ae@, pho@, et al
Sponsored by: Intel Corporation
Before this change we had two flavours of vm_domainset iterators: "page"
and "malloc". The latter was only used for kmem_*() and hard-coded its
behaviour based on kernel_object's policy. Moreover, its use contained
a race similar to that fixed by r338755 since the kernel_object's
iterator was being run without the object lock.
In some cases it is useful to be able to explicitly specify a policy
(domainset) or policy+iterator (domainset_ref) when performing memory
allocations. To that end, refactor the vm_dominset_* KPI to permit
this, and get rid of the "malloc" domainset_iter KPI in the process.
Reviewed by: jeff (previous version)
Tested by: pho (part of a larger patch)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17417
The 4kn support in current bios specific biosdisk.c is broken, as the code
is only implementing the support for the 512B sector size.
This work is building the support for custom size sectors, we still do assume
the requested data to be multiple of 512B blocks and we only do address the
biosdisk.c interface here.
For reference, see also:
https://www.illumos.org/issues/8303https://www.illumos.org/rb/r/547
As the GELI is moved above biosdisk "layer", the GELI should just work
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D11174
Rework the way jemalloc uses mmap(2) on FreeBSD.
This makes it directly use MAP_EXCL and MAP_ALIGNED() instead
of weird workarounds involving mapping at random places and then
unmapping parts of them.
Discussed with: jasone
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Disable runtime detection of lazy purging support on FreeBSD.
The check doesn't seem to serve any purpose here, and this shaves
off three syscalls on binary startup.
Discussed by: jasone
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
In current tftp code we drop out-of-order packets; however, we should play
nice and re-send ACK for older data packets we are receiving. This will
hopefully stop server repeating those packets we already have received.
Note we do not answer duplicates from "previous" session (that is, session
with different port number), those will eventually time out.
Differential Revision: https://reviews.freebsd.org/D17087
This change is similar to r339646. The callback that checks for appearing
and disappearing of tunnel ingress address can be called during VNET
teardown. To prevent access to already freed memory, add check to the
callback and epoch_wait() call to be sure that callback has finished its
work.
MFC after: 20 days
Previously ar would report an error like "ar: fatal: Write error"
without including additional errno information. Change warnings and
errors to include archive_errno() so that the user may have some idea
of the reason for the failure.
Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17650
allowed.
ipsec_srcaddr() callback can be called during VNET teardown, since
ingress address checking subsystem isn't VNET specific. And thus
callback can make access to already freed memory. To prevent this,
use V_ipsec_idhtbl pointer as indicator of VNET readiness. And make
epoch_wait() after resetting it to NULL in vnet_ipsec_uninit() to
be sure that ipsec_srcaddr() is finished its work.
Reported by: kp
MFC after: 20 days
It is more convenient to review old libraries, files, and directories
in order.
Sort check-* after checking for existence of files for efficiency, and
because /usr/lib/debug entries are added while iterating over the list.
Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17649
Changelist:
- Move large parts of VALE code to a new file and header netmap_bdg.[ch].
This is useful to reuse the code within upcoming projects.
- Improvements and bug fixes to pipes and monitors.
- Introduce nm_os_onattach(), nm_os_onenter() and nm_os_onexit() to
handle differences between FreeBSD and Linux.
- Introduce some new helper functions to handle more host rings and fake
rings (netmap_all_rings(), netmap_real_rings(), ...)
- Added new sysctl to enable/disable hw checksum in emulated netmap mode.
- nm_inject: add support for NS_MOREFRAG
Approved by: gnn (mentor)
Differential Revision: https://reviews.freebsd.org/D17364
The script uses shift three times and when building with a strict /bin/sh
shifting without any arguments will cause the script to fail. In this case
the target will fail and we write an empty output file. When doing a
NO_CLEAN build after this will mean fallback.c is up to date and clang
will happily compile the empty input file which leads to strange build
errors later.
Fixed by passing three empty arguments to MkFallback.sh and only creating
fallback.c if MKfallback.sh succeeds.
Aproved By: brooks (mentor)
Differential Revision: https://reviews.freebsd.org/D16867
When building CheriBSD we have to set XLD/XCC/XCFLAGS on the command line.
This triggers the $XCC != $CC case in bsd.compiler.mk (and the same for LD
in bsd.linker.mk) which causes it to call ${XCC} --version and
${XLD} --version (plus various awk+sed+echo calls) in every subdirectory.
For incremental builds and stages that only walk the source tree this is
often the majority of the time spent in that directory.
By only computing the value of the X_COMPILER_*/X_LINKER_* variables if
_WANT_TOOLCHAIN_CROSS_VARS is set we can reduce the number of cc/ld calls
to once per build stage instead of once per recursive make.
With this change (and no changes to the sources) the `make includes` stage
now takes 28 seconds at -j1 instead of 86 seconds.
Approved By: brooks (mentor)
Differential Revision: https://reviews.freebsd.org/D17046
There was an additional + after the {6} which is apparently ignored by the
FreeBSD regex implementation but was giving me an error when compiling on
MacOS.
While changing this also make sure that tables.h is not created if mktables
fails. The current rule would create a partial tables.h which causes following
incremental builds to use that broken file and fail with an unrelated
compilation error or even succeed even though they shouldn't.
Approved By: jhb (mentor)
Differential Revision: https://reviews.freebsd.org/D17069
The taskqgroup_detach function does not check if task is already enqueued when
detaching it. This may lead to kernel panic if enqueued task starts after
context state lock is destroyed. Ensure that the already enqueued admin tasks
are executed before detaching them.
The issue was discovered during validation of D16429. Unloading of if_ixlv
followed by immediate removal of VFs with iovctl -D may lead to panic on
NODEBUG kernel.
As well, check if iflib is in detach before enqueueing new admin or iov
tasks, to prevent new tasks from executing while the taskqgroup tasks
are being drained.
Submitted by: Krzysztof Galazka <krzysztof.galazka@intel.com>
Reviewed by: shurd@, erj@
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D17404
The BMan softc must exist when dtsec devices are created, else a NULL
pointer is dereferenced. QMan likely as well. Until now, we have relied on
order within the fdt parsing to attach correctly, but this obviously is not
foolproof. Mark these as BUS_PASS_SUPPORTDEV so they're probed and attached
explicitly before dtsec devices.
The bits that explicitly request cidx updates do not work reliably with
all possible WRs that can be sent over the queue. The F_FW_WR_EQUIQ
requests that still remain may also have to be replaced with explicit
credit flush WRs in the future.
MFC after: 2 days
Sponsored by: Chelsio Communications
All platforms except powerpc use the same values and powerpc shares a
majority of them.
Go ahead and declare AT_NOTELF, AT_UID, and AT_EUID in favor of the
unused AT_DCACHEBSIZE, AT_ICACHEBSIZE, and AT_UCACHEBSIZE for powerpc.
Reviewed by: jhb, imp
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D17397
Join non-special lines together until we hit a line containing a '}'
character. This allows the function declaration body to be split
across multiple lines without backslash continuation characters.
Continue to join lines ending with backslashes to allow gradual
migration and to support out-of-tree syscall vectors
Reviewed by: emaste, kib
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D17488
The restruct qualifier is intended to aid code generation in the
compiler, but the only access to storage through these pointers is via
structs using copyin/copyout and the like which can not be written in C
or C++ and thus the compiler gains nothing from the qualifiers.
As such, the qualifiers add no value in current usage.
Reviewed by: kib
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D17574
Support a "live" mode in ktrdump enabled via the -l flag. In this
mode, ktrdump polls the kernel's trace buffer periodically (currently
hardcoded as a 50 millisecond interval) and dumps any newly added
entries. Fancier logic for the timeout (e.g. a command line option or
some kind of backoff based on the time since the last entry) can be
added later as the need arises.
While here, fix some bugs from when this was Capsicum-ized:
- Use caph_limit_stream() for the output stream so that isatty() works
and the output can be line-buffered (especially useful for live
mode).
- Use caph_limit_stderr() to permit error messages to be displayed if
an error occurs after cap_enter().
Reviewed by: kib, 0mp (manpage)
MFC after: 2 months
Differential Revision: https://reviews.freebsd.org/D17315
- Add a blank line before a block comment to match other block comments
in the same function.
- Sort the prototype for sbsndptr_adv and fix whitespace between return
type and function name.
Reviewed by: gallatin, bz
Differential Revision: https://reviews.freebsd.org/D17474
Currently the compiler picks up the definition in machine/cpufunc.h.
Add compiler memory barriers to read* and write*. The Linux x86
implementation of these functions uses inline asm with "memory" clobber.
The Linux x86 implementation of read_relaxed* and write_relaxed* uses the
same inline asm without "memory" clobber.
Implement ioread* and iowrite* in terms of read* and write* so they also
have memory barriers.
Qualify the addr parameter in write* as volatile.
Like Linux, define macros with the same name as the inline functions.
Only define 64-bit versions on 64-bit architectures because generally
32-bit architectures can't do atomic 64-bit loads and stores.
Regroup the functions a bit and add brief comments explaining what they do:
- __raw_read*, __raw_write*: atomic, no barriers, no byte swapping
- read_relaxed*, write_relaxed*: atomic, no barriers, little-endian
- read*, write*: atomic, with barriers, little-endian
Add a comment that says our implementation of ioread* and iowrite*
only handles MMIO and does not support port IO.
Reviewed by: hselasky
MFC after: 3 days
This provides a chicken switch for anyone negatively impacted by
enabling NUMA in the amd64 GENERIC kernel configuration. With
NUMA disabled at boot-time, information about the NUMA topology
is not exposed to the rest of the kernel, and all of physical
memory is viewed as coming from a single domain.
This method still has some performance overhead relative to disabling
NUMA support at compile time.
PR: 231460
Reviewed by: alc, gallatin, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17439
Our dependency tracking cannot directly cope with certain source tree
changes, particularly with respect to removing or moving source files or
replacing generated files. We have a collection of ad-hoc workarounds
to handle these cases. As there is a (small) build-time cost inherent
in these workarounds, we do not want to keep them indefinitely. Thus,
remove workarounds from 2017.
Sponsored by: The FreeBSD Foundation
I committed some patches out of order and didn't build-test one of them.
Reported by: Jenkins, O. Hartmann <ohartmann@walstatt.org>
X-MFC with: r339601
On NUMA systems, we would not swap in processes unless all domains
had some free pages. This is too conservative in general. Instead,
permit swapins so long as at least one domain has free pages, and add
a kernel stack NUMA policy which ensures that we will try to allocate
kernel stack pages from any domain.
Reported and tested by: pho, Jan Bramkamp <crest@bultmann.eu>
Reviewed by: alc, kib
Discussed with: jeff
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17304
