Commit Graph

174812 Commits

Author SHA1 Message Date
Konstantin Belousov
f7e50ea722 Fix a race between kern_setitimer() and realitexpire(), where the
callout is started before kern_setitimer() acquires process mutex, but
looses a race and kern_setitimer() gets the process mutex before the
callout.  Then, assuming that new specified struct itimerval has
it_interval zero, but it_value non-zero, the callout, after it starts
executing again, clears p->p_realtimer.it_value, but kern_setitimer()
already rescheduled the callout.

As the result of the race, both p_realtimer is zero, and the callout
is rescheduled. Then, in the exit1(), the exit code sees that it_value
is zero and does not even try to stop the callout. This allows the
struct proc to be reused and eventually the armed callout is
re-initialized.  The consequence is the corrupted callwheel tailq.

Use process mutex to interlock the callout start, which fixes the race.

Reported and tested by:	pho
Reviewed by:	jhb
MFC after:	2 weeks
2012-12-04 20:49:39 +00:00
Konstantin Belousov
9bdf6ccab3 Do not allocate buffer of the 255 bytes length on the stack.
Reported and tested by:	sig6247@gmail.com
MFC after:	1 week
2012-12-04 20:49:04 +00:00
Gleb Smirnoff
7c283ae860 Fix fallout from r243019, which broke parsing of shortened network
prefixes.

Reported and tested by:	delphij
2012-12-04 20:05:01 +00:00
Hiroki Sato
5c9fa630f6 - Fix LOR in sa6_recoverscope() in rt_msg2()[1].
- Check V_deembed_scopeid before checking if sa_family == AF_INET6.
- Fix scope id handing in route(8)[2] and ifconfig(8).

Reported by:	rpaulo[1], Mateusz Guzik[1], peter[2]
2012-12-04 17:12:23 +00:00
Jilles Tjoelker
273e3bbfe6 libc: Use the new 'e' fopen() mode option to simplify fstab.c.
No functional change is intended.
2012-12-04 16:54:43 +00:00
Pawel Jakub Dawidek
456b64c443 Use absolute path for /usr/libexec/ld-elf.so.1 symlink.
Requested by:	kan, kib

Use -h flags for chflags, so we won't remove 'schg' flag from system's
/libexec/ld-elf.so.1.

MFC after:	2 weeks
2012-12-04 14:36:01 +00:00
Konstantin Belousov
c1e231bcbb Fix typo.
Submitted by:	bjk
MFC after:	3 days
2012-12-04 14:07:17 +00:00
Pawel Jakub Dawidek
f31c1e3fd3 Do not change entire BINDIR, it might be needed later, just change
symlink target.

MFC after:	2 weeks
2012-12-04 12:51:33 +00:00
Pawel Jakub Dawidek
dee6306480 Change /usr/libexec/ld-elf.so.1 to point at ../../libexec/ld-elf.so.1
instead of /libexec/ld-elf.so.1. Below in the Makefile we execute
'chflags noschg ${DESTDIR}/usr/libexec/ld-elf.so.1', which follows
symlink and removes 'schg' flag from system's /libexec/ld-elf.so.1
instead of the one in DESTDIR. It is also more friendly to use
replative paths in symlink in case of jail/chroot environments.

Obtained from:	WHEEL Systems
MFC after:	2 weeks
2012-12-04 12:39:26 +00:00
Gleb Smirnoff
f1e17e139d Flush stdout after RTM_IFANNOUNCE message.
PR:		bin/151600
Submitted by:	Eric van Gyzen <eric vangyzen.net>
2012-12-04 11:10:01 +00:00
Gleb Smirnoff
3fa6535388 No need to be root when running with -t or -d. 2012-12-04 10:24:50 +00:00
Kevin Lo
5e48557ef0 Document that bind(2) can fail with EAFNOSUPPORT.
Reviewed by:	glebius
2012-12-04 09:53:09 +00:00
Gleb Smirnoff
c6499eccad Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.
2012-12-04 09:32:43 +00:00
Joel Dahl
8ca5c3fae7 Remove superfluous paragraph macro. 2012-12-04 09:02:49 +00:00
Joel Dahl
43b54fd4fb Remove snapshots.jp.freebsd.org. It stopped working years ago.
Discussed with:	hrs
2012-12-04 07:22:15 +00:00
Alfred Perlstein
922314f018 replace bit shifting loop with 1<<fls(n), improve comments.
Reviewed by: davide
2012-12-04 05:28:20 +00:00
Bryan Drewery
0a44395e2d - Move EXAMPLES descriptions to before the actual command
- Add mdoc macros for EXAMPLES

Reviewed by:	eadler
Approved by:	gjb
MFC after:	3 days
2012-12-04 00:53:20 +00:00
Jung-uk Kim
cea10e1d3b Fix typos in the previous commit. 2012-12-04 00:44:31 +00:00
Jung-uk Kim
08e90c1491 Tidy up bsd.cpu.mk for X86 CPUs:
- Do not limit recent processors to "prescott" class for i386 target.  There
is no reason for this hack because clang is default now.  On top of that, it
will only grow indefinitely over time.
- Add more CPUTYPEs, i.e., "athlon-fx", "core-avx2", "atom", "penryn", and
"yonah".  Note "penryn" and "yonah" are intentionally undocumented because
they are not supported by gcc and marked deprecated by clang.
- Add more CPUTYPE aliases, i.e., "barcelona" (-> amdfam10), "westmere" and
"nehalem" (-> corei7).  Note these are intentionally undocumented because
they are not supported by (base) gcc and/or clang.  However, LLVM (backend)
seems to "know" the differences.  Most likely, they were deprecated with
other vendor code names and clang did not bother implementing them at all.
- Add i686 to MACHINE_CPU for "c3-2" (VIA Nehemiah).  Both gcc & clang treat
it like an i686-class processor.
- Add IDT "winchip2" and "winchip-c6" for completeness (undocumented).
- Order processors per make.conf example, i.e., CPU vendors and models.
- Tidy up make.conf example, i.e., remove "by gcc" (because we have aliases)
and remove "prescott" from AMD64 architecture (because it is not correct).
2012-12-04 00:37:17 +00:00
Konstantin Belousov
471af3a8df Document the interpretation of the negative value of ticks for
taskqueue_enqueue_timeout(9).

MFC after:	3 days
2012-12-04 00:32:12 +00:00
Adrian Chadd
e89812c379 Methodise the BT diversity configuration function; so the AR9285
can correctly override it.

This was missed in the previous commit.
2012-12-04 00:02:46 +00:00
Adrian Chadd
96b59d60c8 Override the BT coex parameter function for the AR9285. 2012-12-04 00:01:42 +00:00
Adrian Chadd
87a85d8a49 Reformat/reindent. 2012-12-04 00:01:24 +00:00
Adrian Chadd
24a8406b99 Add and tie in the AR5416 bluetooth coexistence methods into the HAL. 2012-12-03 23:45:06 +00:00
Adrian Chadd
4516888b72 Add the AR5416/AR9285 bluetooth coexistence code into the main kernel
build.
2012-12-03 23:43:23 +00:00
Adrian Chadd
8db3411759 Add the btcoex code into the module compilation. 2012-12-03 23:38:08 +00:00
Adrian Chadd
f506aeda9b Include if_ath_alq.c, which only gets actually compiled if ATH_DEBUG_ALQ
is enabled.
2012-12-03 23:36:03 +00:00
Konstantin Belousov
349438a243 Print the frame addresses for the backtraces on i386 and amd64. It
allows both to inspect the frame sizes and to manually peek into the
frames from ddb, if needed.

Reviewed by:	dim
MFC after:	2 weeks
2012-12-03 22:16:51 +00:00
Konstantin Belousov
07840861b1 The vnode_free_list_mtx is required unconditionally when iterating
over the active list. The mount interlock is not enough to guarantee
the validity of the tailq link pointers. The __mnt_vnode_next_active()
and __mnt_vnode_first_active() active lists iterators helper functions
did not provided the neccessary stability for the list, allowing the
iterators to pick garbage.

This was uncovered after the r243599 made the active list iterators
non-nop.

Since a vnode interlock is before the vnode_free_list_mtx, obtain the
vnode ilock in the non-blocking manner when under vnode_free_list_mtx,
and restart iteration after the yield if the lock attempt failed.

Assert that a vnode found on the list is active, and assert that the
helpers return the vnode with interlock owned.

Reported and tested by:	pho
MFC after:	1 week
2012-12-03 22:15:16 +00:00
Xin LI
266ab5afbc Note that the manual page of less(1) says:
Note  that  a preprocessor cannot output an empty file, since that
  is interpreted as meaning there is no replacement, and the  origi-
  nal file is used.  To avoid this, if LESSOPEN starts with two ver-
  tical bars, the exit status of the script becomes meaningful.   If
  the  exit  status is zero, the output is considered to be replace-
  ment text, even if it empty.  If the exit status is  nonzero,  any
  output  is ignored and the original file is used.  For compatibil-
  ity with previous versions of less, if LESSOPEN starts  with  only
  one vertical bar, the exit status of the preprocessor is ignored.

Use two pipe symbols for zless, so that zless'ing a compressed empty
file will give output rather than being interpreted as its compressed
form, which is typically a binary.

Thanks Mark Nudelman for pointing out this difference and the
suggested solution.

Reported by:	Matthias Meyser <meyser xenet.de>
PR:		bin/168839
MFC after:	2 weeks
2012-12-03 21:49:37 +00:00
Jack F Vogel
4153fe7216 Remove the sysctl process_limit interface, after some
thought I've decided its overkill,a simple tuneable for
each RX and TX limit, and then init sets the ring values
based on that, should be sufficient.

More importantly, fix a bug causing a panic, when changing
the define style to IXGBE_LEGACY_TX a taskqueue init was
inadvertently set #ifdef when it should be #ifndef.
2012-12-03 21:38:02 +00:00
Joel Dahl
b8c337a319 - Remove snapshots.se.freebsd.org [1]
- Add ftp6.se.freebsd.org

Discussed with:	brd [1]
2012-12-03 19:55:00 +00:00
Jung-uk Kim
04704c638e Remove fictitious support for 80386-class CPUs from bsd.cpu.mk and make(1).
It was removed from head more than 8 years ago (see r137784 and r137785).

Reviewed by:	imp, delphij, dim
2012-12-03 19:27:31 +00:00
Dimitry Andric
3861d79fd7 Upgrade our copy of llvm/clang to r168974, from upstream's release_32
branch.  This is effectively llvm/clang 3.2 RC2; the 3.2 release is
coming soon.
2012-12-03 19:24:08 +00:00
Xin LI
21fa654189 MFV: less v456. 2012-12-03 19:00:23 +00:00
Xin LI
fcf6d6d329 Vendor import of less v456 (beta). 2012-12-03 18:58:12 +00:00
Xin LI
2740382ebd Use SA_ZPL_CRTIME instead of SA_ZPL_CTIME for creation time.
Submitted by:	phil.stone at gmx.com
MFC after:	2 weeks
2012-12-03 04:25:37 +00:00
Ulrich Spörlein
67897cfb90 Fix make depend. 2012-12-02 22:18:01 +00:00
Robert Watson
e0fb6dc33f Specifically point at the Handbook instructions for world updates in
UPDATING by URL.

As there has been some confusion over the need to run "mergemaster -p",
part of our standard upgrade procedure, following the recent addition of
an "auditdistd" user, add a note about it to UPDATING explicitly.
2012-12-02 22:09:16 +00:00
Alexander V. Chernikov
f079a0fa8c Fix bpf_if structure leak introduced in r235745.
Move all such structures to delayed-free lists and
delete all matching on interface departure event.

MFC after:	1 week
2012-12-02 21:43:37 +00:00
Peter Wemm
248da532a4 Add auditdistd to the pre-install required uid check list. 2012-12-02 21:32:45 +00:00
Rui Paulo
c960a2ad1d Run cscope with the -v parameter to make it more user-friendly. 2012-12-02 20:51:24 +00:00
Antoine Brodin
047838e45a Add more obsolete files. 2012-12-02 18:57:02 +00:00
Eitan Adler
dec3a11b26 Add a few more translations from IDs to model name.
Submitted by:	"4721@hushmail.com" <4721@hushmail.com>
Approved by:	cperciva (implicit)
MFC after:	2 weeks
2012-12-02 18:41:22 +00:00
Eitan Adler
bff5138029 Add support for hdmi hda codec onboard nvidia gt 440 graphics card
PR:		kern/174059
Submitted by:	"4721@hushmail.com" <4721@hushmail.com>
Approved by:	cperciva (implicit)
MFC after:	2 weeks
2012-12-02 17:54:52 +00:00
Dimitry Andric
13cc256e40 Vendor import of clang release_32 branch r168974 (effectively, 3.2 RC2):
http://llvm.org/svn/llvm-project/cfe/branches/release_32@168974
2012-12-02 13:20:44 +00:00
Dimitry Andric
522600a229 Vendor import of llvm release_32 branch r168974 (effectively, 3.2 RC2):
http://llvm.org/svn/llvm-project/llvm/branches/release_32@168974
2012-12-02 13:10:19 +00:00
Adrian Chadd
974185bb13 Don't grab the PCU lock inside the TX lock. 2012-12-02 06:50:27 +00:00
Adrian Chadd
375307d411 Delete the per-TXQ locks and replace them with a single TX lock.
I couldn't think of a way to maintain the hardware TXQ locks _and_ layer
on top of that per-TXQ software queuing and any other kind of fine-grained
locks (eg per-TID, or per-node locks.)

So for now, to facilitate some further code refactoring and development
as part of the final push to get software queue ps-poll and u-apsd handling
into this driver, just do away with them entirely.

I may eventually bring them back at some point, when it looks slightly more
architectually cleaner to do so.  But as it stands at the present, it's
not really buying us much:

* in order to properly serialise things and not get bitten by scheduling
  and locking interactions with things higher up in the stack, we need to
  wrap the whole TX path in a long held lock.  Otherwise we can end up
  being pre-empted during frame handling, resulting in some out of order
  frame handling between sequence number allocation and encryption handling
  (ie, the seqno and the CCMP IV get out of sequence);

* .. so whilst that's the case, holding the lock for that long means that
  we're acquiring and releasing the TXQ lock _inside_ that context;

* And we also acquire it per-frame during frame completion, but we currently
  can't hold the lock for the duration of the TX completion as we need
  to call net80211 layer things with the locks _unheld_ to avoid LOR.

* .. the other places were grab that lock are reset/flush, which don't happen
  often.

My eventual aim is to change the TX path so all rejected frame transmissions
and all frame completions result in any ieee80211_free_node() calls to occur
outside of the TX lock; then I can cut back on the amount of locking that
goes on here.

There may be some LORs that occur when ieee80211_free_node() is called when
the TX queue path fails; I'll begin to address these in follow-up commits.
2012-12-02 06:24:08 +00:00
Alfred Perlstein
e002ac8f81 Document maxthreads and minthreads arguments 2012-12-02 05:57:53 +00:00