- Just grab Giant in the ixp425_iic(4) driver since this driver uses
a shared address/data register window pair to access the actual
I2C registers. None of the other ixp425 drivers lock access to these
shared address/data registers yet and that would need to be done before
this could use any meaningful locking.
- Add locking to the interrupt handler and 'iicbus_reset' methods of the
at91_twi(4) driver.
- Add locking to the pcf(4) driver. Other pcf(4) fixes include:
- Don't needlessly zero the softc.
- Use bus_foo rather than bus_space_foo and remove bus space tag and
handle from softc.
- The lpbb(4) driver just grabs Giant for now. This will be refined later
when ppbus(4) is locked.
- As was done with smbus earlier, move the DRIVER_MODULE() lines to match
the bus driver (either iicbus or iicbb) to the bridge driver into the
bridge drivers.
Tested by: sam (arm/ixp425)
- Add a mutex to the softc to protect the softc and device hardware.
- Use a private timer routine to drive the transmit watchdog timer instead
of using if_watchdog/if_timer.
- If if_alloc() fails during attach, fail the attach with an error rather
than panic'ing.
- Clear RUNNING and OACTIVE only in sncstop().
- Don't mess with IFF_UP.
- Don't leak 'struct ifnet' on detach.
- Setup interrupt handler after ether_ifattach().
- Call ether_ifdetach() rather than if_detach() in the pccard detach
routine.
Tested by: no one despite repeated requests
- let the loop iterate every page (as intended), and not some multiplies
(which led to a fake exhaustion of the ARM_NOCACHE_KVA_SIZE)
- eliminate using MIN(): it compared number of pages vs. address
(ARM_TP_ADDRESS), which was bogus
Reviewed by: cognet, imp
Obtained from: Piotr Ziecik kosmo ! semihalf dot com
MFC after: 3 days
PZERO + 1. The sleeping process at the priority <= PZERO is counted as
blocked, or, as comment states, 'disk wait'. PZERO + 1 works as well,
and does not cause user confusion.
Reported by: sam <samflanker at gmail com>
MFC after: 1 week
commit, calling i386_parsedev(..., X, ...) where X is "ad", "bge", or
any other disk or network device name without a unit number, would
result in dereferencing whatever happened to be on the stack where the
variable "cp" is stored.
Found by: LLVM/Clang Static Checker
to this commit, "env BLOCKSIZE=4X df" prints not only "4X: unknown
blocksize" as expected, but sometimes also "maximum blocksize is 1G"
and "minimum blocksize is 512" depending on what happened to be on
the stack.
Found by: LLVM/Clang Static Checker
watchdog timeout issues and the root cause seems to stem from
silicon bug of controller. Personally I couldn't reproduce it on
RTL8169 controller but it seems it's dependent on usage pattern.
For newer PCIe based controllers I have no TSO complaints but
turning off TSO would be more safe. Users who are sure that
their controller works with TSO can still reenable the TSO with
ifconfig(8).
Reported by: Oliver Lehmann (lehmann at ans-netz dot de), Eugene Butusov (ebutusov at gmail dot com)
11bits. This limits the maximum interface MTU size in TSO case
as upper stack should not generate TCP segments with MSS greater
than the limit. Armed with this information, disable TSO if
interface MTU is greater than the limit.
understand which code paths aren't possible.
This commit eliminates 117 false positive bug reports of the form
"allocate memory; error out if pointer is NULL; use pointer".
environ[0] to be more obvious that environ is not NULL before environ[0]
is tested. Although I believe the previous code worked, this change
improves code maintainability.
Reviewed by: ache
MFC after: 3 days
big endian platforms where time_t is 64bits (ie armeb and sparc64), it will
be a problem.
Use a temporary time_t to work around this.
Submitted by: Matthew Luckie <mjl AT luckie DOT org dot nz>
MFC after: 3 days
assumed to be reviewd by them):
Stir directly from the kernel PRNG, without taking less random pid & time
bytes too (when it is possible).
The difference with OpenBSD code is that they have KERN_ARND sysctl for
that task, while we need to read /dev/random
lstat(2) is called on symlinks -- this code appears never to have
worked. The PR this addresses suggests that the intended
original behavior is the right one, but as bde points out in the
PR comments, we do actually support storing a mode on symlinks,
so returning it seems reasonable.
This is consistent with Mac OS X, which despite documentation to
the contrary does return the mode set on a symlink, but not some
other platforms. The Single Unix Spec requires only that the
returned bits be "meaningful", which seems at best unhelpful as
advice goes.
PR: 25018
MFC after: 3 days
vnode lock may cause a LOR between kld_sx lock and vnode lock.
linker_load_dependencies() drops kld_sx, and another thread may attempt
to load the same kld.
Reported and tested by: pjd
MFC after: 1 week
As clearly mentioned on the mailing lists, there is a list of drivers
that have not been ported to the MPSAFE TTY layer yet. Remove them from
the kernel configuration files. This means people can now still use
these drivers if they explicitly put them in their kernel configuration
file, which is good.
People should keep in mind that after August 10, these drivers will not
work anymore. Even though owners of the hardware are capable of getting
these drivers working again, I will see if I can at least get them to a
compilable state (if time permits).
