Similar to what was done for device_printfs in r347229.
Convert g_print_bio() to a thin shim around g_format_bio(), which acts on an
sbuf; documented in g_bio.9.
Reviewed by: markj
Discussed with: rlibby
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21165
The API is used to gracefully terminate text line(s) with a single \n. If
the formatted buffer was empty or already ended in \n, it is unmodified.
Otherwise, a newline character is appended to it. The API, like other
sbuf-modifying routines, is only valid while the sbuf is not FINISHED.
Reviewed by: rlibby
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21030
Code flow was somewhat difficult to read due to the combination of
multiple return sites and the 4x possible dynamic constructions of an
sbuf. (Future consideration: do we need all 4?) Refactored slightly to
improve legibility.
No functional change.
Sponsored by: Dell EMC Isilon
The goal is to avoid some kinds of low-memory deadlock when formatting
heap-allocated buffers.
Reviewed by: vangyzen
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21015
with Communication Device Class Ethernet Emulation Model (CDC EEM).
The driver supports both the device, and host side operation; there
is a new USB template (#11) for the former.
This enables communication with virtual USB NIC provided by iLO 5,
as found in new HPE Proliant servers.
Reviewed by: hselasky
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Hewlett Packard Enterprise
It allows to read and write block descriptors alike to mode page parameters.
It allows to change block size or short-stroke HDDs or overprovision SSDs.
Depenting on -P parameter the change can be either persistent or till reset.
In case of block size change device may need reformat after the setting.
In case of SSD overprovisioning format or sanitize may be needed to really
free the flash.
During implementation appeared that csio_encode_visit() can not handle
integers of more then 4 bytes, that makes 8-byte LBA handling awkward.
I had to split it into two 4-byte halves now.
MFC after: 1 week
Relnotes: yes
Sponsored by: iXsystems, Inc.
Some hardware needs more than 32, bump this value.
We cannot use the _alloc for of getencprop as this function is called
too early in the boot before pmap is initialized and we only have
2k of stack when cninit is called.
Discussed with: ian
The region for uart0 is declared to be 0x2000 in size but the parent
node only declare 0x1000.
As the parent only declare a size of 0x1000 in the ranges for it's children
this cause the device to not be mappable.
https://patchwork.kernel.org/patch/11056769/
This commit imports the new fusefs driver. It raises the protocol level
from 7.8 to 7.23, fixes many bugs, adds a test suite for the driver, and
adds many new features. New features include:
* Optional kernel-side permissions checks (-o default_permissions)
* Implement VOP_MKNOD, VOP_BMAP, and VOP_ADVLOCK
* Allow interrupting FUSE operations
* Support named pipes and unix-domain sockets in fusefs file systems
* Forward UTIME_NOW during utimensat(2) to the daemon
* kqueue support for /dev/fuse
* Allow updating mounts with "mount -u"
* Allow exporting fusefs file systems over NFS
* Server-initiated invalidation of the name cache or data cache
* Respect RLIMIT_FSIZE
* Try to support servers as old as protocol 7.4
Performance enhancements include:
* Implement FUSE's FOPEN_KEEP_CACHE and FUSE_ASYNC_READ flags
* Cache file attributes
* Cache lookup entries, both positive and negative
* Server-selectable cache modes: writethrough, writeback, or uncached
* Write clustering
* Readahead
* Use counter(9) for statistical reporting
PR: 199934 216391 233783 234581 235773 235774 235775
PR: 236226 236231 236236 236291 236329 236381 236405
PR: 236327 236466 236472 236473 236474 236530 236557
PR: 236560 236844 237052 237181 237588 238565
Reviewed by: bcr (man pages)
Reviewed by: cem, ngie, rpokala, glebius, kib, bde, emaste (post-commit
review on project branch)
MFC after: 3 weeks
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Pull Request: https://reviews.freebsd.org/D21110
The exists() check guarding the invocation of ls was not working
correctly as it was expanding '$L' to determine the path of the local
modules directory. Fix by using {} around the variable name.
Inline some of the logic from bsd.subdir.mk when invoking local module
builds. This gives output in 'make buildkernel' the same as if there
was a Makefile in /usr/local/sys/modules with SUBDIR =
${LOCAL_MODULES}.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D20991
- Check for an invalid device (vendor is invalid) before reading the
header type register when examining function 0 of a possible device.
- When iterating over functions of a device, reject any device whose
16-bit vendor is invalid rather than requiring the full 32-bit
vendor+device to be all 1's. In practice the latter check is
probably fine, but checking the vendor is what the PCI spec
recommends.
Reviewed by: imp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D21147
- UMA_XDOMAIN enables an additional per-cpu bucket for freed memory that
was freed on a different domain from where it was allocated. This is
only used for UMA_ZONE_NUMA (first-touch) zones.
- UMA_FIRSTTOUCH sets the default UMA policy to be first-touch for all
zones. This tries to maintain locality for kernel memory.
Reviewed by: gallatin, alc, kib
Tested by: pho, gallatin
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D20929
RT2860_WCID_MAX is supposed to describe the max STA index for wcid2ni, and
was instead being used as the size -- off-by-one.
rt2860_drain_stats_fifo was range-checking wcid only after accessing
out-of-bounds potentially.
Submitted by: Augustin Cavalier <waddlesplash@gmail.com> (basically)
Obtained from: Haiku (58d16d9fe2d5a209cf22823359a8407d138e1a87)
Differential Revision: 3 days
hash was computed and the time that the superblock was copied to a
buffer to be written to disk. The result was a failed superblock
check hash the next time that the superblock was read.
The fix is to compute the check hash after the superblock has been
copied to a buffer to be written.
PR: 236504
Reported by: Peter Holm
Tested by: Peter Holm
Sponsored by: Netflix
Previously the ICMPv6 input path incorrectly handled cases where an
MLDv2 listener query packet was internally fragmented across multiple
mbufs.
admbugs: 921
Submitted by: jtl
Reported by: CJD of Apple
Approved by: so
MFC after: 0 minutes
Security: CVE-2019-5608
Such speculations could use user-controlled %gs base, esp. since
FreeBSD supports WRGSBASE instructions.
Place LFENCEs on entry for each basic block after the test for
previous kernel/user mode on the kernel entry, which prevents the
speculation. Code accesses %gs-based PCPU before any serialization
instructions are executed, like %cr3 reload for KPTI.
With pti disabled, on haswell i7-4770S machine, "syscall_timings getppid"
shows when no lfence is added to syscall path:
test loop time iterations periteration
getppid 0 1.040918865 4643611 0.000000224
getppid 1 1.004985962 4481816 0.000000224
getppid 2 1.005196483 4482363 0.000000224
with lfence:
getppid 0 1.043701091 4554779 0.000000229
getppid 1 1.016930328 4438094 0.000000229
getppid 2 1.023223117 4466640 0.000000229
and ministat reports 'No difference proven at 95.0% confidence.'
Security: CVE-2019-1125
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
There is no need for the 64-bit pmap to have a fixed number of page table
buffers. Since the 64-bit pmap has a DMAP, we can effectively have user
page tables limited only by total RAM size.
We don't need to check if the parent is already set.
This is done already in the proc_reparent.
No functional behaviour changes intended.
MFC after: 1 month
The process is reparented to the debugger while it is attached.
B B
/ ----> |
A A D
Every time when the process is reparented, it is added to the orphan list
of the previous parent:
A->orphan = B
D->orphan = NULL
When the A process will close the process descriptor to the B process,
the B process will be reparented to the init process.
B B - init
| ---->
A D A D
A->orphan = B
D->orphan = B
In this scenario, the B process is in the orphan list of A and D.
When the last process descriptor is closed instead of reparenting
it to the reaper let it stay with the debugger process and set
our previews parent to the reaper.
Add test case for this situation.
Notice that without this patch the kernel will crash with this test case:
panic: orphan 0xfffff8000e990530 of 0xfffff8000e990000 has unexpected oppid 1
Reviewed by: markj, kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20361
In case of the process being debugged. The P_TRACED is cleared very early,
which would make procdesc_close() not calling proc_clear_orphan().
That would result in the debugged process can not be able to collect
status of the process with process descriptor.
Reviewed by: markj, kib
Tested by: pho
MFC after: 1 month
NVMe reservations are quite alike to SCSI persistent reservations and
can be used in clustered setups with shared multiport storage.
MFC after: 10 days
Relnotes: yes
Sponsored by: iXsystems, Inc.
Instances of the device can be configured using hints or FDT data.
Interfaces to reconfigure the chip and extract voltage measurements from
it are available via sysctl(8).
The hash buckets array is called ip6q. The data structure ip6q is a
description of different object, the one the array holds these days
(since r337776). To clear some of this confusion, rename the array
to ip6qb.
When iterating over all buckets or addressing them directly, we
use at least the variables i, hash, and bucket. To keep the
terminology consistent use the variable name "bucket" and always
make it an uint32_t and not sometimes an int.
No functional behaviour changes intended.
MFC after: 3 months
Sponsored by: Netflix
Re-order functions within the file in preparation for an upcoming
code simplification.
No functional changes.
MFC after: 3 months
Sponsored by: Netflix
The last few changes needed before 32-bit AIM builds with secure-PLT with
base GCC. Because ofwcall32.S and swtch32.S were branching to the GOT it
could not use secure PLT.
PowerPC, and possibly other architectures, use different address ranges for
PCI space vs physical address space, which is only mapped at resource
activation time, when the BAR gets written. The DRM kernel modules do not
activate the rman resources, soas not to waste KVA, instead only mapping
parts of the PCI memory at a time. This introduces a
BUS_TRANSLATE_RESOURCE() method, implemented in the Open Firmware/FDT PCI
driver, to perform this necessary translation without activating the
resource.
In addition to system KPI changes, LinuxKPI is updated to handle a
big-endian host, by adding proper endian swaps to the I/O functions.
Submitted by: mmacy
Reported by: hselasky
Differential Revision: https://reviews.freebsd.org/D21096
The flag handling was committed commented out 7 years ago. It works, and is
needed for LinuxKPI-based DRM drivers.
Also mark a local as potentially unusable, as it's only really used when KTR
is enabled.
Submitted by: mmacy
When the ipfilter kld is loaded, used within VNET jail, and unloaded,
then subsequent loading, use, and unloading of another packet filters
will cause the subsequently loaded netpfil kld's to panic.
The scenario is as follows:
cd /usr/tests/sys/netpfil/common
kldunload ipl
kldunload pfsync
kldunload ipfw
kyua test pass_block
kldload ipl
kyua test pass_block
kldunload ipl
kldload pfsync
kyua test pass_block
kldunload pfsync
-- page fault panic occurs here --
Reported by: "Ahsan Barkati" <ahsanbarkati@g.....com> via kp@
Discussed with: kp@
Tested by: kp@
MFC after: 3 days
