If child is slow reading from its input, or even completely stops doing
the read, script(1) hangs in write(2) to the pts master waiting until
there is a space in the terminal discipline buffer. This also stops
handling any outer io, as well as child output.
Work around the problem by making pts master fd non-blocking, and be
prepared for short writes to it. The data to be written to master is
buffered in the tailq which is processed when select(2) detects that
master is ready for write.
PR: 260938
Reported by: наб <nabijaczleweli@nabijaczleweli.xyz>
See also: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1003095
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33789
Alexander Motin [Mon, 10 Jan 2022 14:35:01 +0000 (09:35 -0500)]
Revert "iflib: Relax timer period from 0.5 to 0.5-0.75s."
I've noticed relations between iflib_timer() vs ixl_admin_timer().
Both scheduled at the same 2Hz rate, but the second is rescheduling
the first each time, so if the first get any slower, it won't be
executed at all. Revert this until deeper investigation.
If a counter more than overflows just as we read it on switch out then,
if using sampling mode, we will negate this small value to give a huge
reload count, and if we later switch back in that context we will
validate that value against pm_reloadcount and panic an INVARIANTS
kernel with:
panic: [pmc,1470] pmcval outside of expected range cpu=2 ri=16 pmcval=fffff292 pm_reloadcount=10000
or similar. Presumably in a non-INVARIANTS kernel we will instead just
use the provided value as the reload count, which would lead to the
overflow not happing for a very long time (e.g. 78 minutes for a 48-bit
counter incrementing at an averate rate of 1GHz).
Instead, clamp the reload count to 0 (which corresponds precisely to the
value we would compute if it had just overflowed and no more), which
will result in hwpmc using the full original reload count again. This is
the approach used by core for Intel (for both fixed and programmable
counters).
As part of this, armv7 and arm64 are made conceptually simpler; rather
than skipping modifying the overflow count for sampling mode counters so
it's always kept as ~0, those special cases are removed so it's always
applicable and the concatentation of it and the hardware counter can
always be viewed as a 64-bit counter, which also makes them look more
like other architectures.
Whilst here, fix an instance of UB (shifting a 1 into the sign bit) for
amd in its sign-extension code.
Andrew Turner [Wed, 5 Jan 2022 15:12:01 +0000 (15:12 +0000)]
Move instructions into the arm64 exception vectors
We have 32 instructions in each exception vector on arm64. Previously
only one was used to branch to the handler function. We can split the
start of these functions and move some of the instructions into the
vectors.
Reviewed by: kib, markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33751
Kirk McKusick [Mon, 10 Jan 2022 00:17:13 +0000 (16:17 -0800)]
Avoid unnecessary setting of UFS flag requesting fsck(8) be run.
When the kernel is requested to mount a filesystem with a bad superblock
check hash, it would set the flag in the superblock requesting that the
fsck(8) program be run. The flag is only written to disk as part of a
superblock update. Since the superblock always has its check hash updated
when it is written to disk, the problem for which the flag has been set
will no longer exist. Hence, it is counter-productive to set the flag
as it will just cause an unnecessary run of fsck if it ever gets written.
Warner Losh [Sun, 9 Jan 2022 17:13:58 +0000 (10:13 -0700)]
devd: remove the scsi regexp
We don't really use the scsi regexp for anything. The rescan was a
workaround that was fixed a long time ago and has been disabled for
ages. And the regexp was incomplete.
Warner Losh [Sun, 9 Jan 2022 17:13:05 +0000 (10:13 -0700)]
cam: Include more statuses as errors for CAM_IO_STATS
Tag more status return values as an error for the
I/O. CAM_SCSI_STATUS_ERROR is returned for medium errors, for example,
but the counts weren't increased. The added errors all indicate a
problem with the device request.
Bjoern A. Zeeb [Sun, 9 Jan 2022 01:12:05 +0000 (01:12 +0000)]
LinuxKPI: bitfields add more *replace_bits()
Add or extend the already existing *_replace_bits() implementations
using macros as we do for the other parts in the file for
le<n>p_replace_bits(), u<n>p_replace_bits(), and _u<n>_replace_bits().
MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D33799
Bjoern A. Zeeb [Sun, 9 Jan 2022 02:21:05 +0000 (02:21 +0000)]
LinuxKPI / iwlwifi: fix spelling of constants
Fix the spelling of IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_*
(was "NOMIMAL"). The original version came from iwlwifi
in iwlwifi-next. Other drivers (from wireless-testing) already
use the correct spelling and need this change in LinuxKPI.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Robert Wing [Sun, 9 Jan 2022 01:07:50 +0000 (16:07 -0900)]
syncache: accept packet with no SA when TCP_MD5SIG is set
When TCP_MD5SIG is set on a socket, all packets are dropped that don't
contain an MD5 signature. Relax this behavior to accept a non-signed
packet when a security association doesn't exist with the peer.
This is useful when a listen socket set with TCP_MD5SIG wants to handle
connections protected with and without MD5 signatures.
Robert Wing [Sun, 9 Jan 2022 01:07:10 +0000 (16:07 -0900)]
tcpmd5: return ENOENT when security association not found
Return ENOENT from tcp_ipsec_input() when a security association is not
found. This allows callers of TCP_MD5_INPUT() to differentiate between a
security association not found and receiving a bad signature.
Also return ENOENT from tcp_ipsec_output() for consistency.
We never initialized hw->conf.flags for IEEE80211_CONF_IDLE but
on set_channel we would clear it and announce a change.
This lead to a problem that drivers may do some work every time
which was not needed and may lead to unexpected behaviour (for no
better driver code).
Properly initialize conf.flags with IEEE80211_CONF_IDLE.
Factor out the toggling into a function and clear IDLE while
sw scanning and when associated and set again when scan ends
or we are bouncing out of assoc.
Cy Schubert [Sat, 8 Jan 2022 04:12:50 +0000 (20:12 -0800)]
ipfilter: Restore ipfsync
ipfsync is a WIP sync daemon designed to be used in a failover scenario.
It was removed by 5ee61c7daa511927aae8652d6a3ea78866a50ef8. This commit
restores its three files. ipfsync is in my work queue.
Pre-calculate masks and page table/page directory bases, for LA48 and
LA57 cases, trading a conditional for the memory accesses.
This shaves 672 bytes of .text, by the cost of 32 .data bytes. Note
that eliminated code contained one conditional, and several costly
movabs instructions, which are traded by two memory fetches per
vtop{t,d}e() inlines.
Reviewed by: markj
Discussed with: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33776
A function to remount the filesystem from rw to ro on integrity error.
The work is performed in taskqueue to allow the call to be done from
almost arbitrary context where erronous state was detected.
Tested by: pho
Reviewed by: markj, mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33721
We use sector count to size the FAT inuse bitset. If sector count is
corrupted, kernel might be tricked into doing unbound allocation.
Ensure that the sector count does not exceed the actual volume size.
In collaboration with: pho
Reviewed by: markj, mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33721
msdosfs: take inusemap inconsistency as an error, not invariants violation
In other words, stop silently accepting freeing free cluster in
non-debug kernels, but return the error to the caller. Modify callers
to handle errors from usemap_free().
In collaboration with: pho
Reviewed by: markj, mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33721
It is possible, on the corrupted msdosfs volume, to have file which
denode inode number does not match the one calculated using directory
cluster. Instead of asserting the condition as impossible, handle it
and return error, after reclaiming the aliased vnode.
In collaboration with: pho
Reviewed by: markj, mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33721
Ed Maste [Fri, 7 Jan 2022 15:34:08 +0000 (10:34 -0500)]
Build libclang also if LLDB is enabled
LLDB depends on libclang as it uses Clang as the expression parser.
Previously setting WITHOUT_CLANG but leaving LLDB enabled (as default)
resulted in a build failure.
Users who set WITHOUT_CLANG in order to reduce build time or size
might want to set WITHOUT_LLDB in addition to WITHOUT_CLANG, or use
WITHOUT_TOOLCHAIN instead.
PR: 260993
Reported by: eugen
Reviewed by: dim
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Alexander Motin [Fri, 7 Jan 2022 17:54:49 +0000 (12:54 -0500)]
nvme: Do not rearm timeout for commands without one.
Admin queues almost always have several ASYNC_EVENT_REQUEST outstanding.
They have no timeouts, but their presence in qpair->outstanding_tr caused
useless timeout callout rearming twice a second.
While there, relax timeout callout period from 0.5s to 0.5-1s to improve
aggregation. Command timeouts are measured in seconds, so we don't need
to be precise here.
Alexander Motin [Fri, 7 Jan 2022 17:49:21 +0000 (12:49 -0500)]
cam: Relax callouts precisions.
On large systems even relatively rare callouts may fire many times
per second. This should allow them to aggregate better, since we do
not require any precision when polling for media change, etc.
Warner Losh [Fri, 7 Jan 2022 16:36:25 +0000 (09:36 -0700)]
net/if_pfsync.h: Add back to bad files
This file does not build for WITHOUT_PF sometimes. Looking at various
ways to cope (it exposes other issues too), but in the mean time just
add it back here to unbreak WITHOUT_PF in some scenarios.
Warner Losh [Fri, 7 Jan 2022 05:34:25 +0000 (22:34 -0700)]
libsoft: Remove
libsoft was a transition from the FreeBSD/armv6 10 (and earlier) with
'softfp' ABI (that is, hardware float, but passed as integer registers)
to the 'hardfp' ABI that was in FreeBSD/armv[67] in FreeBSD 11 and
newer. It's been off by default since it was created.
This was mostly used by people that wanted to do a source upgrade of
their system from FreeBSD 10 to 11 or from 11-current before the cutover
to 11-current after. This should not be confused with the full software
floating point implementation (that doesn't use the hardware floating
point instructions at all) that is used out of tree by at least one
company selling armv7 gear that has no FPU.
There's no longer a need for the transition, so retire it like should
likely have happened sometime before FreeBSD 12 was released 3 years
ago.
John Baldwin [Thu, 6 Jan 2022 22:46:50 +0000 (14:46 -0800)]
cryptocheck: Add aliases for algs with multiple key sizes.
Previously algorithms such as AES-CBC would provide an algorithm
without a key size for the smallest key size and additional algorithms
with an explicit key size, e.g. "aes-cbc" (128 bits), "aes-cbc192",
and "aes-cbc256".
Instead, always make the key size name explicit and reuse the
"generic" name to request running tests against all of the key sizes.
For example, for AES-CBC this means "aes-cbc128" is now the name of
the variant with a 128-bit key and "aes-cbc" runs tests of AES-CBC
with all three key sizes.
This makes it easier to run tests on all combinations of ciphers like
AES-GCM or AES-CCM with -z in a single invocation.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33759
Rick Macklem [Thu, 6 Jan 2022 22:18:36 +0000 (14:18 -0800)]
nfscl: Always invalidate buffers for append writes
kib@ reported a problem which was resolved by
reverting commit 867c27c23a5c, which changed the NFS
client to use direct RPCs to the server for
IO_APPEND writes. He also spotted that the
code only invalidated buffer cache buffers
when they were marked NMODIFIED (had been
written into).
This patch modifies the NFS VOP_WRITE() to
always invalidate the buffer cache buffers
and pages for the file when IO_APPEND is
specified. It also includes some cleanup
suggested by kib@.
Ryan Stone [Thu, 11 Feb 2021 16:17:58 +0000 (11:17 -0500)]
Fix ifa refcount leak in ifa_ifwithnet()
In 4f6c66cc9c75c8, ifa_ifwithnet() was changed to no longer
ifa_ref() the returned ifaddr, and instead the caller was required
to stay in the net_epoch for as long as they wanted the ifaddr
to remain valid. However, this missed the case where an AF_LINK
lookup would call ifaddr_byindex(), which still does ifa_ref()
the ifaddr. This would cause a refcount leak.
Fix this by inlining the relevant parts of ifaddr_byindex() here,
with the ifa_ref() call removed. This also avoids an unnecessary
entry and exit from the net_epoch for this case.
I've audited all in-tree consumers of ifa_ifwithnet() that could
possibly perform an AF_LINK lookup and confirmed that none of them
will expect the ifaddr to have a reference that they need to
release.
Ed Maste [Sun, 2 Jan 2022 00:16:43 +0000 (19:16 -0500)]
route: remove write-only struct hostent from getaddr()
Under some INET/INET6 src.conf configurations sbin/route previously
failed to build due to an unused variable warning. It was functionally
write-only anyway, so just remove it.
Reported by: melifaro
Reviewed by: melifaro
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33717
John Baldwin [Wed, 5 Jan 2022 21:50:40 +0000 (13:50 -0800)]
bus_dma: Deduplicate locking helper functions.
- Move busdma_lock_mutex to subr_bus_dma.c.
- Move _busdma_lock_dflt to subr_bus_dma.c. This function was named a
couple of different things previously. It is not a public API but
an internal helper used in place of a NULL pointer. The prototype
is in <sys/bus_dma.h> as not all backends include
<sys/bus_dma_internal.h>.
John Baldwin [Wed, 5 Jan 2022 21:50:40 +0000 (13:50 -0800)]
Deduplicate bus_dma bounce code.
Move mostly duplicated code in various MD bus_dma backends to support
bounce pages into sys/kern/subr_busdma_bounce.c. This file is
currently #include'd into the backends rather than compiled standalone
since it requires access to internal members of opaque bus_dma
structures such as bus_dmamap_t and bus_dma_tag_t.
Navdeep Parhar [Wed, 5 Jan 2022 18:45:06 +0000 (10:45 -0800)]
cxgbe(4): Do not request an FEC that is invalid for the requested speed.
This eliminates error messages like this from the driver when running at
50Gbps with 100G cables:
[3726] cc0: l1cfg failed: 71
[4407] cc0: l1cfg failed: 71
Note that link comes up anyway with or without this change.
Alexander Motin [Wed, 5 Jan 2022 16:32:44 +0000 (11:32 -0500)]
atkbd: Reduce polling rate from 10Hz to ~1Hz.
In my understanding this is only needed to workaround lost interrupts.
I was thinking to remove it completely, but the comment about edge-
triggered interrupt may be true and needs deeper investigation. ~1Hz
should be often enough to handle the supposedly rare loss cases, but
rare enough to not appear in top. Add sysctl hw.atkbd.hz to tune it.
Mark Johnston [Wed, 5 Jan 2022 15:08:13 +0000 (10:08 -0500)]
bhyve: Correct unmapping of the MSI-X table BAR
The starting address passed to mprotect was wrong, so in the case where
the last page containing the table is not the last page of the BAR, the
wrong region would be unmapped.
Reported by: Andy Fiddaman <andy@omniosce.org>
Reviewed by: jhb
Fixes: 7fa233534736 ("bhyve: Map the MSI-X table unconditionally for passthrough")
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33739
Mark Johnston [Tue, 4 Jan 2022 19:02:55 +0000 (14:02 -0500)]
bhyve: Map the right BAR in init_msix_table()
The PBA and MSI-X table can reside in different BARs.
Reported by: Andy Fiddaman <andy@omniosce.org>
Reviewed by: jhb
Fixes: 7fa233534736 ("bhyve: Map the MSI-X table unconditionally for passthrough")
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33739
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