If multiple threads race calling vfs_hash_insert() while creating vnodes
with the same identity, all of the vnodes which lose the race must be
destroyed before any other thread can see them. Previously this was
accomplished by the vput() in vfs_hash_insert() resulting in the vnode's
VOP_INACTIVE() method calling vgone() before the vnode lock was unlocked,
but at some point changes to the the vnode refcount/inactive logic have caused
that to no longer work, leading to crashes, so instead vfs_hash_insert()
must call vgone() itself before calling vput() on vnodes which lose the race.
Reviewed by: mjg, kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D26291
bbr_log_type_hrdwtso() is a file local static unused function.
Remove it to avoid warnings on kernel compiles.
Reviewed by: gallatin
Differential Revision: https://reviews.freebsd.org/D26331
m_segments() was added with r363464 but never used. Remove it to
avoid warnings when compiling kernels.
Reported by: rmacklem (also says jhb)
Reviewed by: gallatin, jhb
Differential Revision: https://reviews.freebsd.org/D26330
The kernel adjusts the stack by TF_SIZE and the RISC-V ABI requires
that it remain 16-byte aligned.
Reported by: CHERI, jrtc27
Reviewed by: mhorne
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26328
Investigating a hang I found having some more error information
available would be helpful, so be more verbose and also tell cam/xpt
status in case of error/panic.
Reviewed by: hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D26287
While debugging a hang I noticed that in case of error in
umass_cam_attach_sim() we miss a cam_sim_free() call.
Added that to not leak resources.
Reviewed by: hselasky
MFC after: 3 days
Differential Revision: D26287
cam_sim_free(), cam_sim_release(), and cam_sim_hold() all assign
a mtx variable during declaration and then if NULL or the mtx is
held may re-asign the variable and/or acquire/release a lock.
Harmonize the code, avoiding double assignments and make it look
the same for all three function (with cam_sim_free() not needing
an extra case).
No functional changes intended.
Reviewed by: imp; no-objections by: mav
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D26286
This package is intended to be used with ice(4) version 0.26.16. That
update will happen in a forthcoming commit.
MFC after: 3 days
Sponsored by: Intel Corporation
When using ifnet ktls, and when ktls_reset_send_tag()
fails to allocate a replacement tag, it leaves
the tls session's snd_tag pointer NULL. ktls_cleanup()
tries to release the send tag, and will trip over
this NULL pointer and panic unless NULL is checked for.
Reviewed by: jhb
Sponsored by: Netflix
This makes it possible to run an unmodified Linux syzkaller executor
against the Linuxulator, and have it gather code coverage information.
Sponsored by: The FreeBSD Foundation
After nexthop introduction, loopback routes for the interface addresses
were created without embedding actual interface index in the gateway.
The latter is needed to pass the IPv6 scope during transmission via loopback..
Fix the regression by actually using passed gateway data with interface index.
Differential Revision: https://reviews.freebsd.org/D26306
I have such a custom kernel configuration and its build failed with:
linking kernel.full
ld: error: undefined symbol: mac_vnode_assert_locked
>>> referenced by mac_framework.h:556 (/usr/devel/git/apu2c4/sys/security/mac/mac_framework.h:556)
>>> tmpfs_vnops.o:(mac_vnode_check_stat)
>>> referenced by mac_framework.h:556 (/usr/devel/git/apu2c4/sys/security/mac/mac_framework.h:556)
>>> vfs_default.o:(mac_vnode_check_stat)
>>> referenced by mac_framework.h:556 (/usr/devel/git/apu2c4/sys/security/mac/mac_framework.h:556)
>>> ufs_vnops.o:(mac_vnode_check_stat)
This is in sync with what is defined for Linux 5.8. Note that all bits
in HWCAP are exhausted, and HWCAP2 has been added.
This also revealed an error in some of the existing definitions. We are
missing HWCAP_ASIMDHP, and as a result a portion of the HWCAP values are
shifted right by one bit. This will be fixed in an upcoming change, but
the values being added now are compatible with what Linux defines.
Reviewed by: emaste, markj, manu
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26030
We don't need these pagetables after the early boot. Remove the chance we
write to memory we didn't expect to and remove architectural undefined
behaviour.
Reviewed by: alc (earlier version), mmel
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D22606
Fix the build after r365264, I forgot to exclude arm in one more place.
Reported by: rpokala
Approved by: manu (implicit, build fix)
MFC after: 3 days
X-MFC-With: 365264
Pointy-hat to: zeising
mgb had a longstanding typo in function-like macro MGB_NEXT_RING_IDX's
argument, but the macro had no consumers. r365061 introduced a use of
the macro, after which mgb failed to build.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
While rare, encountering an unimplemented system call early in init is
catastrophic and difficult to debug. Even after a SIGSYS handler is
registered, such configurations are problematic. As such, always report
such events for pid 1 (following kern.lognosys if non-zero).
Reviewed by: kevans, imp
Obtained from: CheriBSD (plus suggestions from kevans)
MFC after: 1 week
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26288
We were needlessly acquiring the object lock to call
vm_page_grab_pages() even when all of the requested pages were looked up
locklessly. Fix that, stop testing for count == 0 in
vm_page_grab_pages(), and add assertions to help catch this kind of
mistake.
Reported by: cem
Reviewed by: alc, cem, dougm, jeff
Differential Revision: https://reviews.freebsd.org/D26304
hints data. Control register 2 holds the settings a user might want to
configure, such as the timeout value for idle busses and whether to enable
the mass-writes feature.
Also add hint support for disconnecting idle busses (which was already
supported using FDT data).
Update the manpage with the new features, and also split the hints section
into separate lists of required and optional hints.
- Change the type of hw.pagesizes to OPAQUE, since it returns an array.
- Modify the handler to only truncate the returned length if the caller
supplied an output buffer. This allows use of the trick of passing a
NULL output buffer to fetch the output size, while preserving
compatibility if MAXPAGESIZES is increased.
- Add a "S,pagesize" formatter to sysctl(8).
Reviewed by: alc, kib
MFC after: 2 weeks
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26239
Currently we use a single bit to indicate whether the virtual page is
part of a superpage. To support a forthcoming implementation of
non-transparent 1GB superpages, it is useful to provide more detailed
information about large page sizes.
The change converts MINCORE_SUPER into a mask for MINCORE_PSIND(psind)
values, indicating a mapping of size psind, where psind is an index into
the pagesizes array returned by getpagesizes(3), which in turn comes
from the hw.pagesizes sysctl. MINCORE_PSIND(1) is equal to the old
value of MINCORE_SUPER.
For now, two bits are used to record the page size, permitting values
of MAXPAGESIZES up to 4.
Reviewed by: alc, kib
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26238
This allows privileged userspace processes to find information about the
physical page backing a given mapping. It is useful in applications
such as DPDK which perform some of their own memory management.
Reviewed by: kib, jhb (previous version)
MFC after: 2 weeks
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara Inc.
Differential Revision: https://reviews.freebsd.org/D26237
Further improve the drm2 deprecation message, only displaying information
about the port for relevant architectures, and skipping the message
completely from arm, which uses some parts of drm2 still.
This is mostly intended to be merged to 12, since the base bits of drm2 on
FreeBSD 13 are only really used on arm.
Reviewed by: manu, mmel
Approved by: manu
MFC after: 3 days
X-MFC-with: r364737
Differential Revision: https://reviews.freebsd.org/D26275
If the call to _pmap_allocpte() is not sleepable, it is possible that
allocation of PML4 or PDP page is successful but either PDP or PD page
is not. Restructured code in _pmap_allocpte() leaves zero-referenced
page in the paging structure.
Handle it by checking refcount of the page one level above failed
alloc and free that page if its reference count is zero.
Reported and tested by: pho
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D26293
We must enter NET_EPOCH before calling ether_output_frame(). Several of the
functions it calls (pfil_run_hooks, if_transmit) expect to be running in the
NET_EPOCH.
While here remove an unneeded EPOCH entry (which wasn't wide enough to cover
BRIDGE_INPUT).
PR: 248958
Reviewed by: glebius, bz (previous version), melifaro (previous version)
Tested by: manu
Differential Revision: https://reviews.freebsd.org/D26226
Make sure that building dev/sdhci/sdhci_fsl_fdt.c has all the right
dependencies until a proper fix can be made.
Sponsored by: Mellanox Technologies // NVIDIA Networking
The CS_DRAIN flag cannot be set at the same time like the async-drain function
pointer is set. These are orthogonal features. Assert this at the beginning
of the function.
Before:
if (flags & CS_DRAIN) {
/* FALLTHROUGH */
} else if (xxx) {
return yyy;
}
if (drain) {
zzz = drain;
}
After:
if (flags & CS_DRAIN) {
/* FALLTHROUGH */
} else if (xxx) {
return yyy;
} else {
if (drain) {
zzz = drain;
}
}
Reviewed by: markj@
Tested by: callout_test
Differential Revision: https://reviews.freebsd.org/D26285
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
This whitespace was intentionally added to help differentiate the different
register groups within this file.
While here add missing whitespace from earlier in the file,
Sponsored by: Innovate UK
Add support for new devices which are capable of 2.5 and 5G speeds, as well as
Energy Efficient Ethernet (EEE):
- introduce new device ids
- add ability to select 2.5 and 5G speeds on devices which support it
- add sysctls to enable EEE and read related statistics
Submitted by: Krzysztof Galazka <krzysztof.galazka@intel.com>
Reviewed by: #IntelNetworking
MFC after: 3 days
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D25549
