Mitchell Horne [Tue, 23 Mar 2021 20:47:14 +0000 (17:47 -0300)]
Add new vnode dumper to support live minidumps
This dumper can instantiate and write the dump's contents to a
file-backed vnode.
Unlike existing disk or network dumpers, the vnode dumper should not be
invoked during a system panic, and therefore is not added to the global
dumper_configs list. Instead, the vnode dumper is constructed ad-hoc
when a live dump is requested using the new ioctl on /dev/mem. This is
similar in spirit to a kgdb session against the live system via
/dev/mem.
As described briefly in the mem(4) man page, live dumps are not
guaranteed to result in a usuable output file, but offer some debugging
value where forcefully panicing a system to dump its memory is not
desirable/feasible.
A future change to savecore(8) will add an option to save a live dump.
Reviewed by: markj, Pau Amma <pauamma@gundo.com> (manpages)
Discussed with: kib
MFC after: 3 weeks
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D33813
Mitchell Horne [Mon, 9 Aug 2021 17:21:07 +0000 (14:21 -0300)]
Split out dumper allocation from list insertion
Add a new function, dumper_create(), to allocate a dumper.
dumper_insert() will call this function and retains the existing
behaviour.
This is desirable for performing live dumps of the system. Here, there
is a need to allocate and configure a dumper structure that is invoked
outside of the typical debugger context. Therefore, it should be
excluded from the list of panic-time dumpers.
free_single_dumper() is made public and renamed to dumper_destroy().
Reviewed by: kib, markj
MFC after: 1 week
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D34068
Mitchell Horne [Thu, 24 Feb 2022 16:15:17 +0000 (12:15 -0400)]
mem(4): Improve ioctl section formatting
Add the missing .El which fixes the indentation of the memory range
definitions and operation. Add subsection headings to further clarify
this section. Do the same for the RETURN VALUES section, and mention
explicitly that MEM_EXTRACT_PADDR always returns zero.
Reviewed by: markj, 0mp, Pau Amma <pauamma@gundo.com>
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D34574
Rick Macklem [Tue, 5 Apr 2022 15:11:37 +0000 (08:11 -0700)]
nfscl: Add support for a NFSv4 AppendWrite RPC
For IO_APPEND VOP_WRITE()s, the code first does a
Getattr RPC to acquire the file's size, before it
can do the Write RPC.
Although NFS does not have an append write operation,
an NFSv4 compound can use a Verify operation to check
that the client's notion of the file's size is
correct before doing the Write operation.
This patch prepares the NFSv4 client for such an
RPC, which will be added in a future commit.
mrsas: if controller reset is in progress, refrain from firing DCMDs to
firmware in shutdown
If controller reset is in progress, at same time if system shutdown is
issued then corresponding shutdown function in driver will be invoked
where driver is waiting 15 seconds to complete the controller reset.
If the reset is not complteted within that time frame driver will go
ahead and fire cache flush and shutdown DCMDs which will end up
accessing the the queues which are not initialized due to undergoing
reset leads to FMU error in firmware.
Fix:
In shutdown function, if controller reset is not finished within 15
seconds than driver will return to the OS without firing any DCMDs.
When the unicode locales files where split off the non unicode locales
be_BY.ISO8859-5 and ca_IT.ISO8859-15 where non installed one due to
a typo, the other one was just missing its entry in the Makefile.
It was only notice a year later, by some postgres developpers as it was
breaking some of their tests.
Warner Losh [Tue, 5 Apr 2022 05:06:29 +0000 (23:06 -0600)]
linuxkpi: Move lkpi_pcim_iomap_devres_find to .c file
lkpi_pcim_iomap_devres_find encodes the size of struct pcim_iomap_devres
in the code, so move from .h to .c to move from client driver to
linuxkpi module.
Warner Losh [Tue, 5 Apr 2022 05:06:21 +0000 (23:06 -0600)]
linuxkpi: Move pci_alloc_irq_vectors to .c file
pci_alloc_irq_vectors encodes the size of struct msix_entry
into its code. Move from .h to .c to move this knowledge from
client modules to linuxkpi module.
Warner Losh [Tue, 5 Apr 2022 05:06:14 +0000 (23:06 -0600)]
linuxkpi: Move pci_request_region and _lkpi_pci_iomap into .c
Both pci_request_region and _lkpi_pci_iomap encode the size of struct
pci_mmio_region into their code. Move from .h to .c files to move that
knowledge from the client drivers into the linuxkpi module.
Warner Losh [Tue, 5 Apr 2022 05:05:43 +0000 (23:05 -0600)]
linuxkpi: Move class_create to .c file
class_create encodes the size of struct class into the generated
code. Move from .h file to .c file to move this knowledge from the
client modules that call this into the linuxkpi module.
Warner Losh [Tue, 5 Apr 2022 05:05:36 +0000 (23:05 -0600)]
linuxkpi: Move device_create_groups_vargs to linux_compat.c
device_create_groups_vargs encodes the size of struct device. Move
definition from .h to .c to move this size into the linuxkpi module
rather than encoding it in all client driver modules.
wpa/hostapd: Fix 100% CPU when USB wlan NIC removed
hostapd calls pcap_next(3) to read the next packet off the wlan interface.
pcap_next() returns a pointer to the packet header but does not indicate
success or failure. Unfortunately this results in an infinite loop (100%
CPU) when the wlan device disappears, i.e. when a USB wlan device is
manually removed or a USB error results in the device removal. However
pcap_next_ex(3) does return success or failure. To resolve this we use
pcap_next_ex(), forcing hostapd to exit when the error is encountered.
An error message is printed to syslog or stderr when debugging (-d flag)
is enabled. Unfortunately wpa_printf() only works when debugging is enabled.
Remove the trailing backslash from the last list item. This is a NOP and
never bothered anything because the next line was a blank line. Remove
it for correctness sake.
bsdinstall/partedit: Replace libdialog with libbsddialog
bsdinstall/partedit: Replace (LGPL) libdialog with (BSD-2-Clause)
libbsddialog. Rewrite diskeditor.c and rename diskmenu.c because
it uses an API for menu totally incompatible with libbsddialog.
This is a User Interface change everything else is unchanged.
Bjoern A. Zeeb [Wed, 30 Mar 2022 17:38:23 +0000 (17:38 +0000)]
LinuxKPI: PCI: add counter for linux_dma_map_phys_common() errors
LinuxKPI is asking for single-segment mappings. Some (wireless) drivers
are using this to map multi-pages and our busdma framework is not very
friendly to that as single-segments [D31823]. Add a counter so we can
track when this happens to gather more information.
Sponsored by: The FreeBSD Foundation
Reviewed by: hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D34715
Xin LI [Sun, 3 Apr 2022 18:45:38 +0000 (11:45 -0700)]
sys/contrib/zlib: Always define Z_U8 and Z_U4
This is a temporary hack for zlib to make sure that the library
still builds when building with Z_SOLO (used in kernel and loader),
as zlib is depending on limits.h which is only available in STDC
case.
o parse.c: try to include 'posix.mk' the first time
.POSIX: is encountered, to allow for beter POSIX compliance.
Others
o cond.c: make debug logging for comparisons less technical
o lst.c: fix mem leak in Lst_Remove
o job.c: fix echoing of command with '-' in silent target in jobs mode
o var.c: make debug logs more readable
prefer 'long long' over 'long' on 32-bit C99 platforms
fix crash on .undef of an environment variable
Milan Obuch [Sat, 2 Apr 2022 18:28:33 +0000 (15:28 -0300)]
mii: include missing sources in loadable module
As of today, using 'kldload miibus' is not equivalent to using 'device
miibus' in a kernel config. Newly introduced PHY drivers (DP83822,
DP83867, VSCPHY) and source files/PHY driver for FDT-enabled kernels
are missing. Without including them, kernel modules using any function
from dev/mii/mii_fdt.c refuse to load. Additionally, miivar.h directly
includes opt_platform.h.
Add the missing sources to the module build, with the FDT-only files
gated behind an OPT_FDT check. Maintain the alphabetical listing of
SRCS, but move the required header files to a separate line to improve
readability.
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