bootp/arp/rarp/rpc all use the sendrecv implementation in net.c. tftp has
its own implementation because it passes an extra parameter into the recv
callback for the received payload type to be held.
These sendrecv implementations are otherwise equivalent, so consolidate
them. The other users of sendrecv won't be using the extra argument to recv,
but this gives us only one place to worry about respecting timeouts and one
consistent timeout behavior.
Tested by: sbruno
Reviewed by: sbruno, tsoome
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D14373
The latest version of getdirentries (syscall 554) takes a pointer
an an off_t as the last argument. The old version which copies out
an int32_t was being used instead. Use the standard sys_getdirentries()
implementation instead.
Reviewed by: kib
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14379
The FDT variant is called "gicv2m" too, and as both would try to register
on gic, only one of them would succeed, while we want them both in a
GENERIC kernel.
Reviewed by: andrew
metadata load files were consolidated in r329190, and these relocation fixup
bits were inadvertently dropped in the process. Re-add them to fix boot with
ubldr.
Glanced over by: jhibbits
X-MFC-With: r329190
illumos/illumos-gate@d6e1c446d7d6e1c446d7https://www.illumos.org/issues/8857
I had an OS panic on one of our servers:
ffffff01809128c0 vpanic()
ffffff01809128e0 mutex_panic+0x58(fffffffffb94c904, ffffff597dde7f80)
ffffff0180912950 mutex_vector_enter+0x347(ffffff597dde7f80)
ffffff01809129b0 zio_remove_child+0x50(ffffff597dde7c58, ffffff32bd901ac0,
ffffff3373370908)
ffffff0180912a40 zio_done+0x390(ffffff32bd901ac0)
ffffff0180912a70 zio_execute+0x78(ffffff32bd901ac0)
ffffff0180912b30 taskq_thread+0x2d0(ffffff33bae44140)
ffffff0180912b40 thread_start+8()
It panicked here:
http://src.illumos.org/source/xref/illumos-gate/usr/src/uts/common/fs/zfs/
zio.c#430
pio->io_lock is DEAD, thus a panic. Further analysis shows the "pio"
(parent zio of "cio") has already been destroyed.
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Youzhong Yang <youzhong@gmail.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Author: George Wilson <george.wilson@delphix.com>
PR: 223803
Tested by: shiva.bhanujan@quorum.com
MFC after: 2 weeks
select(2) should be declared as restrict. In addition the only fd in
the fdset is open O_RDONLY, and it's not a socket that can provide OOB
notifications,
Reviewed by: ian, imp, vangyzen
Panasas discovered that ioctl(SIOCGLAGGPORT) returns ENOTTY for mxge(4) when
the NIC is not a member of a lagg. This came as a surprise, because the
SIOCGLAGGPORT handler in if_lagg.c only returns ENOENT (if run against the
laggX interface, rather than a physical port) or EINVAL (if run against a
non-member physical port). This behavior was not seen with other drivers,
such as bge(4), igb(4), and cxl(4). When I compared their respective ioctl
handlers, I found that they all called ether_ioctl() for the default (i.e.
unhandled) case; by contrast, mxge(4) only calls ether_ioctl() for two
specific cases, and returns ENOTTY for the default case.
Remove the two cases which explicitly call ether_ioctl(), and let the
default case call it instead. This matches what the vast majority of the NIC
drivers do.
Reviewed by: kmacy
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D14381
cddl/usr.sbin/zfsd/zfsd_event.cc
Remove the check for da and ada devices. This way zfsd can work on md,
geli, glabel, gstripe, etc devices. geli in particular is useful
combined with ZFS. gnop is also useful for simulating drive pulls in
the ZFSD test suite.
Also, eliminate the DevfsEvent class entirely. Move its
responsibilities into GeomEvent. We can get everything we need to know
just from listening to GEOM events.
lib/libdevdctl/event.cc
Fix GeomEvent::DevName for CREATE events. Oddly, the relevant field is
named "cdev" for CREATE events but "devname" for disk events.
MFC after: 3 weeks
Relnotes: Yes (probably worth mentioning the geli part)
Sponsored by: Spectra Logic Corp
The idea is, the pmap_qenter() API is now defined to not produce executable
mappings. If you need executable mappings, use another API.
Add pg_nx flag in pmap_qenter on x86 to make kernel pages non-executable.
Other architectures that support execute-specific permissons on page table
entries should subsequently be updated to match.
Submitted by: Darrick Lew <darrick.freebsd AT gmail.com>
Reviewed by: markj
Discussed with: alc, jhb, kib
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D14062
A few ISP filter PADI requests based on such tag,
to force the use of their own routers.
The custom Host-Uniq tag is passed in the NGM_PPPOE_CONNECT
control message, so it can be used with FreeBSD ppp(8)
and mpd without any other change.
Add support to send and receive PADM messages,
HURL and MOTM, often used by service providers to provide
ACS information and other configuration settings
to the user CPE.
Submitted by: ale
Approved by: mav (mentor)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D9270
If the underlying provider's physical path is null, then the gpart device's
physical path will be, too. Otherwise, it will append the partition name,
such as "/p1" or "/s1/a". This will make gpart work better with zfsd(8).
PR: 224965
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D14010
If the underlying provider's physical path is null, then the geli device's
physical path will be, too. Otherwise, it will append "/eli". This will make
geli work better with zfsd(8).
PR: 224962
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D13979
sbt is the time in the future that the tsleep_sbt() is expected to be completed
at. sbtt is the current time. Depending on the precision with sysctl
kern.timecounter.alloweddeviation the start time may be incremented by
tc_tick_sbt. The same increment is needed for the current time of sbtt before
calculating the difference. The impact of missing this increment is that rmtp
may increase by one tc_tick_sbt on every early [EINTR] return. If the same
struct is passed in for rqtp as rmtp this can result in rqtp effectively
incrementing by tc_tick_sbt and sleeping longer than originally intended.
This problem was introduced in r247797.
Reviewed by: kib, markj, vangyzen (all on an older version of the test)
MFC after: 2 weeks
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D14362
Scan only the BLOCK IO MEDIA once instead of each time for each type of
device (fd, cd and hdd).
Leave the mechanism to free and reprobe all devices if one day we want
to implement a "dev rescan" thing.
Reviewed by: imp, tsoome
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D14334
zfsctl_common_pathconf will report all the same variables that regular ZFS
volumes report. zfsctl_common_getacl will report an ACL equivalent to 555,
except that you can't read xattrs or edit attributes.
Fixes a bug where "ls .zfs" will occasionally print something like:
ls: .zfs/.: Operation not supported
PR: 225793
Reviewed by: avg
MFC after: 3 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D14365
readip() doesn't, at the moment, properly indicate to callers that it has
timed out. One can tell that it's timed out if errno == EAGAIN when it
returns, but this is not ideal. Restructure it a little bit to explicitly
set errno to ETIMEDOUT if we've exhausted tleft.
I found two places that care about where it timed out or not: sendrecv in
net.c and sendrecv_tftp. Both are structured to pass smaller timeout values
to readip while tracking a larger timeout. Neither of them were able to do
this properly with readip not indicating ETIMEDOUT, so fix it.
While here, straighten out the time (t/t1) usage in sendrecv_tftp.
This would have manifested itself in periodic failures to NFS/TFTP boot for
no apparent reason because MINTMO/MAXTMO were not actually being respected
properly. Problems were not reported with NFS, only TFTP.
Reported by: sbruno
Reviewed by: sbruno, tsoome
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D14350
Some GEOM partition tables may be destroyed with incomplete partition
entries. Guard against this with NULL checks.
Reported by: pholm,others
Reviewed by: markj
Tested by: pholm
As a component of atan2(y, x), the case of x == 1.0 is farmed out to
atan(y). The current implementation of this comparison is vulnerable
to signed integer underflow (that is, undefined behavior), and it's
performed in a somewhat more complicated way than it need be. Change
it to not be quite so cute, rather directly comparing the high/low
bits of x to the specific IEEE-754 bit pattern that encodes 1.0.
Note that while there are three different e_atan* files in the
relevant directory, only this one needs fixing. e_atan2f.c already
compares against the full bit pattern encoding 1.0f, while
e_atan2l.cuses bitwise-ands/ors/nots and so doesn't require a change.
Closes#130
Submitted by: Jeff Walden (@jswalden github PR #130)
Reviewed by: bde
MFC After: 1 month
Summary:
After revision rS328534('PPC64: use hwref instead of cpuid'), FreeBSD on
powerpc64 virtual machine panics since it is unable to read the
timebase, showing the following error:
get-property for timebase-frequency on zero phandle
panic: Unable to determine timebase frequency!
With the change above, cpuref->cr_hwref does not contain the phandle
anymore, thus, it never reads the proper CPU entry in OF.
Submitted by: Breno Leitao
Differential Revision: https://reviews.freebsd.org/D14204
From the submitter description:
The process is forked transitioning a map entry to COW
Thread A writes to a page on the map entry, faults, updates the pmap to
writable at a new phys addr, and starts TLB invalidations...
Thread B acquires a lock, writes to a location on the new phys addr, and
releases the lock
Thread C acquires the lock, reads from the location on the old phys addr...
Thread A ...continues the TLB invalidations which are completed
Thread C ...reads from the location on the new phys addr, and releases
the lock
In this example Thread B and C [lock, use and unlock] properly and
neither own the lock at the same time. Thread A was writing somewhere
else on the page and so never had/needed the lock. Thread C sees a
location that is only ever read|modified under a lock change beneath
it while it is the lock owner.
To fix this, perform the two-stage update of the copied PTE. First,
the PTE is updated with the address of the new physical page with
copied content, but in read-only mode. The pmap locking and the page
busy state during PTE update and TLB invalidation IPIs ensure that any
writer to the page cannot upgrade the PTE to the writable state until
all CPUs updated their TLB to not cache old mapping. Then, after the
busy state of the page is lifted, the faults for write can proceed and
do not violate the consistency of the reads.
The change is done in vm_fault because most architectures do need IPIs
to invalidate remote TLBs. More, I think that hardware guarantees of
atomicity of the remote TLB invalidation are not enough to prevent the
inconsistent reads of non-atomic reads, like multi-word accesses
protected by a lock. So instead of modifying each pmap invalidation
code, I did it there.
Discovered and analyzed by: Elliott.Rabe@dell.com
Reviewed by: markj
PR: 225584 (appeared to have the same cause)
Tested by: Elliott.Rabe@dell.com, emaste, Mike Tancsa <mike@sentex.net>, truckman
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D14347
If the map entry elookup was performed due to the mapping changes, we
need to ensure that there is still some access permission bit
requested which is compatible with the current vm_map_entry mode. If
not, restart the handler from scratch instead of trying to save the
current progress.
Also adjust fault_type to not include cleared permission bits.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D14347
