Alex Richardson [Tue, 17 Aug 2021 16:44:40 +0000 (17:44 +0100)]
Mark LLDB/CLANG_BOOTSTRAP/LLD_BOOTSTRAP as broken on non-FreeBSD for now
I enabled these options again in 31ba4ce8898f9dfa5e7f054fdbc26e50a599a6e3,
but unfortunately only my specific build configuration worked whereas the
build with default options is still broken.
[multipath][nhops] Fix random crashes with high route churn rate.
When certain multipath route begins flapping really fast, it may
result in creating multiple identical nexthop groups. The code
responsible for unlinking unused nexthop groups had an implicit
assumption that there could be only one nexthop group for the
same combination of nexthops with weights. This assumption resulted
in always unlinking the first "identical" group, instead of the
desired one. Such action, in turn, produced a used-but-unlinked
nhg along with freed-and-linked nhg, ending up in random crashes.
Similarly, it is possible that multiple identical nexthops gets
created in the case of high route churn, resulting in the same
problem when deleting one of such nexthops.
Fix by matching the nexthop/nexhop group pointer when deleting the item.
Kevin Bowling [Tue, 10 Aug 2021 19:47:22 +0000 (12:47 -0700)]
e1000: rctl/srrctl buffer size init, rfctl fix
Simplify the setup of srrctl.BSIZEPKT on igb class NICs.
Improve the setup of rctl.BSIZE on lem and em class NICs.
Don't try to touch rfctl on lem class NICs.
Manipulate rctl.BSEX correctly on lem and em class NICs.
Marius Strobl [Sat, 23 Jan 2021 18:18:28 +0000 (19:18 +0100)]
e1000: consistently use the hw variables
It's rather confusing when adapter->hw and hw are mixed and matched
within a particular function.
Some of this was missed in cd1cf2fc1d49c509ded05dcd41b7600a5957fb9a
and r353778 respectively.
Emmanuel Vadot [Tue, 16 Mar 2021 06:11:56 +0000 (07:11 +0100)]
pkgbase: Add an src.conf option for splitting man pages
Man pages can be big in total, add an options to split man pages
in -man packages so we produce smaller packages.
This is useful for small jails or mfsroot produced of pkgbase.
The option is off by default.
Mark Johnston [Mon, 9 Aug 2021 17:27:20 +0000 (13:27 -0400)]
vfs: Avoid a comparison with an uninitialized field in setutimes()
Some filesystems, e.g., devfs, do not populate va_birthtime in their
GETATTR implementations. To handle this, make sure that va_birthtime is
initialized to the quasi-standard value of { VNOVAL, 0 } before calling
VOP_GETATTR.
Reported by: KMSAN
Reviewed by: kib
Sponsored by: The FreeBSD Foundation
Mark Johnston [Mon, 9 Aug 2021 17:28:08 +0000 (13:28 -0400)]
amd64: Fix output operand specs for the stmxcsr and vmread intrinsics
This does not appear to affect code generation, at least with the
default toolchain.
Noticed because incorrect output specifications lead to false positives
from KMSAN, as the instrumentation uses them to update shadow state for
output operands.
Reviewed by: kib
Sponsored by: The FreeBSD Foundation
Mark Johnston [Mon, 9 Aug 2021 17:28:27 +0000 (13:28 -0400)]
vmm: Make iommu ops tables const
While here, use designated initializers and rename some AMD iommu method
implementations to match the corresponding op names. No functional
change intended.
Reviewed by: grehan
Sponsored by: The FreeBSD Foundation
Mark Johnston [Mon, 9 Aug 2021 17:21:43 +0000 (13:21 -0400)]
nd6: Mark several callouts as MPSAFE
The use of Giant here is vestigal and does not provide any useful
synchronization. Furthermore, non-MPSAFE callouts can cause the
softclock threads to block waiting for long-running newbus operations to
complete.
Reported by: mav
Reviewed by: bz
Sponsored by: The FreeBSD Foundation
- Use appropriate mdoc macros
- Document that tcp= is a synonym to rfb= (tcp is used in the examples,
but never mentioned)
- Clarify the IP address specification
bhyve.8: Improve emulation description of the -s flag
- Set width of the list to the longest key word for readability.
- Separate descriptions of amd_hostbridge and hostbridge emulations.
Also, wordsmith their descriptions for consistency with other entries.
- Use Cm instead of Li for command modifiers.
- Do not stylize AMD with Li, there's no need to do it.
- Mention COM3 and COM4 in the definition of lpc.
- Fix a typo in the definition of ahci-hd ("hard drive" instead of
"hard-drive").
Also, remove the macros of the nested list which contained slot,
emulation and conf. This decreases the indention of the -s description.
It was necessary to clean up the slot description.
bhyve.8: Improve the description and synopsis of -l
- Describe "-l help" separately for readability.
- List all the supported comX devices explicitly
- Use Cm instead of Ar for command modifiers (i.e., literal values a
user can specify as an argument to the command).
- Explain where to get more information about the possible values of the
conf argument.
In particular:
- Sort short options to align with style(9)
- Add two missing flags: -G and -r
- Drop unnecessary angle brackets for consistency
- Rename the "vm" argument to vmname for consistency with the manual
page
iichid(4): Perform bus_teardown_intr/bus_setup_intr to disable interrupts
during suspend/resume cycle. Previously used bus_generic_suspend_intr and
bus_generic_resume_intr may cause interrupt storm because of missed
interrupt acknowledges caused by blocking of intr handler.
J.R. Oldroyd [Mon, 31 May 2021 19:33:07 +0000 (22:33 +0300)]
iichid(4): disable interrupt on suspend
Commit message of the identical change in Linux driver says:
"When an I2C HID device is powered off during system sleep, as a result
of removing its power resources (by the ACPI core) the interrupt line
might go low as well. This results inadvertent interrupts."
This change fixes suspend/resume on Asus S510UQ laptops.
While here add a couple of typo fixes as well as a slight change to the
iichid_attach() code to have the power_on flag set properly.
Rick Macklem [Wed, 28 Jul 2021 22:23:05 +0000 (15:23 -0700)]
nfscl: Set correct lockowner for "oneopenown" mount option
For NFSv4.1/4.2, the client may use either an open, lock or
delegation stateid as the stateid argument for an I/O operation.
RFC 5661 defines an order of preference of delegation, then lock
and finally open stateid for the argument, although NFSv4.1/4.2
servers are expected to handle any stateid type.
For the "oneopenown" mount option, the lock owner was not being
correctly generated and, as such, the I/O operation would use an
open stateid, even when a lock stateid existed. Although this
did not and should not affect an NFSv4.1/4.2 server's behaviour,
this patch makes the behaviour for "oneopenown" the same as when
the mount option is not specified.
Found during inspection of packet captures. No failure during
testing against NFSv4.1/4.2 servers of the unpatched code occurred.
Rick Macklem [Wed, 28 Jul 2021 22:48:27 +0000 (15:48 -0700)]
nfscl: Cache an open stateid for the "oneopenown" mount option
For NFSv4.1/4.2, if the "oneopenown" mount option is used,
there is, at most, only one open stateid for each NFS vnode.
When an open stateid for a file is acquired, set a pointer to
the open structure in the NFS vnode. This pointer can be used to
acquire the open stateid without searching the open linked list
when the following is true:
- No delegations have been issued for the file. Since delegations
can outlive an NFS vnode for a file, use the global
NFSMNTP_DELEGISSUED flag on the mount to determine this.
- No lock stateid has been issued for the file. To determine
this, a new NFS vnode flag called NMIGHTBELOCKED is set when a lock
stateid is issued, which can then be tested.
When this open structure pointer can be used, it avoids the need to
acquire the NFSCLSTATELOCK() and searching the open structure list for
an open. The NFSCLSTATELOCK() can be highly contended when there are
a lot of opens issued for the NFSv4.1/4.2 mount.
This patch only affects NFSv4.1/4.2 mounts when the "oneopenown"
mount option is used.
It seems that the number of lines is no longer an optional parameter to
the -C flag. Document it accordingly both in the manual page and the
usage message.
Dimitry Andric [Thu, 5 Aug 2021 18:57:22 +0000 (20:57 +0200)]
Add ElfW() macro for compatibility with Linux
Some Linux software using ELF headers assumes the existence of an
ElfW(type) macro, which concatenates 'Elf', the default ELF word size,
and the given type. This is identical to our __ElfN(x) macro in
<sys/elf_generic.h>. Add the macro for compatibility, with a comment
that we prefer the __ElfN() macro for FreeBSD.
From the (substantially larger) upstream commit:
+ call delay_output_sp to handle BSD-style padding when tputs_sp is
called, whether directly or internally, to ensure that the SCREEN
pointer is passed correctly (reports by Henric Jungheim, Juraj
Lutter).
This fixes bison segfaults observed when colourized output is enabled.
Thanks to jrtc27@ for identifying the upstream fix.
Add check that ifp supports IPv6 multicasts in in6_getmulti.
This fixes panic when user application tries to join into multicast
group on an interface that doesn't support IPv6 multicasts, like
IFT_PFLOG interfaces.
Alexander Motin [Fri, 30 Jul 2021 03:16:22 +0000 (23:16 -0400)]
coretemp(4): Switch to smp_rendezvous_cpus().
Use of smp_rendezvous_cpus() instead of sched_bind() allows to not
block indefinitely if target CPU is running some thread with higher
priority, while all we need is single rdmsr/wrmsr instruction call.
I guess it should also be much cheaper than full thread migration.
Alexander Motin [Fri, 30 Jul 2021 03:39:04 +0000 (23:39 -0400)]
ipmi(4): Add more watchdog error checks.
Add request submission status checks before checking req->ir_compcode,
otherwise it may be zero just because of initialization.
Add checks for req->ir_compcode errors in ipmi_reset_watchdog() and
ipmi_set_watchdog(). In first case explicitly check for 0x80, which
means timer was not previously set, that I found happening after BMC
cold reset. This change makes watchdog timer to recover instead of
permanently ignoring reset errors after BMC reset or upgraded.
John Baldwin [Sat, 12 Jun 2021 00:59:46 +0000 (17:59 -0700)]
bhyve vtblk: Inform guests of disk resize events.
Register a resize callback with the blockif interface. When the
callback fires, update the size of the disk and notify the guest via a
configuration change interrupt.
John Baldwin [Sat, 12 Jun 2021 00:59:25 +0000 (17:59 -0700)]
bhyve: Add support for handling disk resize events to block_if.
Allow clients of blockif to register a resize callback handler. When
a callback is registered, register an EVFILT_VNODE kevent watching the
backing store for a change in the file's attributes. If the size has
changed when the kevent fires, invoke the clients' callback.
Currently resize detection is limited to backing stores that support
EVFILT_VNODE kevents such as regular files.
John Baldwin [Sat, 12 Jun 2021 00:59:13 +0000 (17:59 -0700)]
bhyve: Add support for EVFILT_VNODE mevents.
This allows registering an event to watch for changes to a file's
attributes. This is a bit imperfect as it would be nice to have a way
to determine if an fd can use EVFILT_VNODE successfully. mevent's
current structure does not permit that and a failure to register a
single kevent impacts several other kevents.
John Baldwin [Sat, 12 Jun 2021 00:58:54 +0000 (17:58 -0700)]
bhyve: Register new kevents synchronously.
Change mevent_add*() to synchronously add the new kevent. This
permits reporting event registration failures to the caller and avoids
failing the registration of other, unrelated events queued up in the
same batch.
Mark Johnston [Thu, 29 Jul 2021 13:46:25 +0000 (09:46 -0400)]
link_elf_obj: Invoke fini callbacks
This is required for KASAN: when a module is unloaded, poisoned regions
(e.g., pad areas between global variables) are left as such, so if they
are reused as KLDs are loaded, false positives can arise.
Reported by: pho, Jenkins
Reviewed by: kib
Sponsored by: The FreeBSD Foundation
Mark Johnston [Thu, 29 Jul 2021 14:22:37 +0000 (10:22 -0400)]
amd64: Set GS.base before calling init_secondary() on APs
KMSAN instrumentation requires thread-local storage to track
initialization state for function parameters and return values. This
buffer is accessed as part of each function prologue. It is provided by
the KMSAN runtime, which looks up a pointer in the current thread's
structure.
When KMSAN is configured, init_secondary() is instrumented, but this
means that GS.base must be initialized first, otherwise the runtime
cannot safely access curthread. Work around this by loading GS.base
before calling init_secondary(), so that the runtime can at least check
curthread == NULL and return a pointer to some dummy storage. Note that
init_secondary() still must reload GS.base after calling lgdt(), which
loads a selector into %gs, which in turn clears the base register.
Reviewed by: kib
Sponsored by: The FreeBSD Foundation
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