| Commit message (Collapse) | Author | Files | Lines |
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The lguest block device only requests one minor, which means
partitions don't work (eg "root=/dev/lgba1").
Let's follow the crowd and ask for 16.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This fixes a vulnerability in the "parent process death signal"
implementation discoverd by Wojciech Purczynski of COSEINC PTE Ltd.
and iSEC Security Research.
http://marc.info/?l=bugtraq&m=118711306802632&w=2
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
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Adrian Bunk: scripts/mod/file2alias.c is compiled with HOSTCC and ensures that
kernel_ulong_t is correct, but it can't cope with different padding on
different architectures.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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When using Ski to debug early startup, it's a bit of a pain not to
have printk.
This patch enables the simulated console very early.
It may be worth conditionalising on the command line... but this is
enough for now.
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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The "ri" field in the processor status register only has defined
values of 0, 1, 2. Do not let ptrace set this to 3. As with
other reserved fields in registers we silently discard the value.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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The underflow exception cases were wrong.
This is one weird area of ieee1754 handling in that the underflow
behavior changes based upon whether underflow is enabled in the trap
enable mask of the FPU control register. As a specific case the Sparc
V9 manual gives us the following description:
--------------------
If UFM = 0: Underflow occurs if a nonzero result is tiny and a
loss of accuracy occurs. Tininess may be detected
before or after rounding. Loss of accuracy may be
either a denormalization loss or an inexact result.
If UFM = 1: Underflow occurs if a nonzero result is tiny.
Tininess may be detected before or after rounding.
--------------------
What this amounts to in the packing case is if we go subnormal,
we set underflow if any of the following are true:
1) rounding sets inexact
2) we ended up rounding back up to normal (this is the case where
we set the exponent to 1 and set the fraction to zero), this
should set inexact too
3) underflow is set in FPU control register trap-enable mask
The initially discovered example was "DBL_MIN / 16.0" which
incorrectly generated an underflow. It should not, unless underflow
is set in the trap-enable mask of the FPU csr.
Another example, "0x0.0000000000001p-1022 / 16.0", should signal both
inexact and underflow. The cpu implementations and ieee1754
literature is very clear about this. This is case #2 above.
However, if underflow is set in the trap enable mask, only underflow
should be set and reported as a trap. That is handled properly by the
prioritization logic in
arch/sparc{,64}/math-emu/math.c:record_exception().
Based upon a report and test case from Jakub Jelinek.
Signed-off-by: David S. Miller <davem@davemloft.net>
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A similar fix to netfilter from Eric Dumazet inspired me to
look around a bit by using some grep/sed stuff as looking for
this kind of bugs seemed easy to automate. This is one of them
I found where it looks like this semicolon is not valid.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a bug in the ia64_do_page_fault code that can cause a failure
to grow the register backing store, or any mapping that is marked as
VM_GROWSUP if the mapping is the highest mapped area of memory.
When the address accessed is below the first mapping the previous mapping
is returned as NULL, and this case is handled. However, when the address
accessed is above the highest mapping the vma returned is NULL, this
case is not handled correctly, and it fails to spot that this access
might require an existing mapping to grow upwards.
Signed-off-by: Andrew Burgess <andrew@transitive.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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It seems we have gained an extraneous trailing ';' on one of the
wait loops in scif_sercon_putc(). Although this is completely
benign as the apparent payload is also the empty statement, it
invites error in the future. Clean it up now.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Corrects an error code so that it is valid to pass to userspace.
Signed-off-by: Steve Grubb <linux_4ever@yahoo.com>
Signed-off-by: James Morris <jmorris@halo.namei>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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This register is not a part of the sun4v architecture.
Niagara 1 and 2 happened to leave it around.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The bzero/memset implementation stays the same as Niagara-1.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Like the OF device tree, it's useful to let userland get
at the machine description so it can pretty print the
graph etc.
The implementation is a simple MISC device with a read method.
Signed-off-by: David S. Miller <davem@davemloft.net>
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A stray semicolon makes us inadvertently ignore the value of err.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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A similar fix to netfilter from Eric Dumazet inspired me to
look around a bit by using some grep/sed stuff as looking for
this kind of bugs seemed easy to automate. This is one of them
I found where it looks like this semicolon is not valid.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The recent RCU work created an unbalanced rcu_read_unlock
in __sock_create. This patch fixes that. Reported by
oleg 123.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The core cpufreq code doesn't appear to understand returning -EAGAIN
for the get() function of the cpufreq_driver. If PAL_GET_PSTATE returns
-1, such as when running on Xen, scaling_cur_freq is happy to return
4294967285 kHz (ie. (unsigned)-11). The other drivers appear to return
0 for a failure, and doing so gives me the max frequency from
scaling_cur_frequency and "<unknown>" from cpuinfo_cur_frequency. I
believe that's the desired behavior.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Add empty definition of mmiowb() since some drivers need it. Uncached
writes are strongly ordered on AVR32. They may be delayed if the
dcache is busy doing a writeback, but AFAICT that's not what this
macro is supposed to deal with, at least on UP systems.
We might have to revisit this definition when a SMP-capable AVR32 CPU
comes along, depending on how the busses and cache coherency stuff
end up being implemented.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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The current definition of pte_page() masks out valid bits from the
physical address, causing vmalloc_to_page() to misbehave. This may
lead to everything from mmap() silently accessing the wrong data to
"invalid pte" errors dumped by the kernel.
Also remove the now-unused definition of PTE_PHYS_MASK.
Thanks to Matteo Vit for discovering this bug.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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There's really no need to retry an allocation with __GFP_REPEAT set.
Also, use get_zeroed_page() and __GFP_ZERO to eliminate the extra call
to clear_page() afterwards.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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The NGW100 has a board controller which is hooked up to the TWI lines
on AP7000. Since the TWI driver isn't in mainline, use the i2c-gpio
driver in the mean time.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Add GPIO led support: J2 to either block of LEDs on the STK1000.
This uses the new LEDS_GPIO driver, and sets up a heartbeat trigger by
default ... either bright (!!) amber, or a more interesting purple.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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Adjust libata to ignore errors after spinup
This patch is to ignore errors from the spinup attempt if the drive is
in the "standby id" state.
Signed-off-by: Ryan Power <rpower@sysreset.com>
Acked-by: Mark Lord <liml@rtr.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Add TECRA M7 to broken suspend list. Reported by Marie Koreen.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Marie Koreen <kbug@koreen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix several inconsistencies in these drivers WRT reporting the clocks:
- when using DPLL mode, 'pata_hpt37x' driver reported the DPLL frequency as the
PCI clock -- make it properly report both clocks and add the same ability to
the 'pata_hpt3x2n' driver;
- both drivers sometimes use "pata_hpt3*:" and sometimes "hpt3*:" in the
messages -- make them use only the former one;
- the message about failed DPLL stablizatios deserves KERN_ERR and a bang. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The DPLL tuning code always set up it for 66 MHz due to wrong UltraDMA mask
including mode 5 used to check for the necessity of 66 MHz clocking -- this
caused 66 MHz clock to be used for HPT374 chip that does not tolerate it.
While fixing this, also remove PLL mode from the TODO list -- I don't think
it's still a relevant item.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Maximum supported UDMA mode for AEC6280[R] is UDMA5 (not UDMA4)
and for AEC6880[R] it is UDMA6 (not UDMA5):
* Fix the problem by adding missing struct ata_port_info to artop_init_one().
* Use the right naming (s/626/628/).
* Bump driver version.
Fixes IDE->libata regression, problem was never present in IDE aec62xx driver.
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix map entry 10b for ich8. It's [P0 P2 IDE IDE] like ich6 / ich6m.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: <Kristen Carlson Accardi> kristen.c.accardi@intel.com
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Underneath all the HPT packaging, PCI identifiers, binary driver modules
and stuff you find that ...
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix probing of PS3 storage devices: in the success case, we should set
`error' to zero, not `result'.
Without this patch no storage devices are found.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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ppc64 does the unusual thing of using #include on a compiler-generated
assembly file (lparmap.s) from an assembly source file (head_64.S).
This runs afoul of my recent patch to pass -gdwarf2 to the assembler
under CONFIG_DEBUG_INFO. This patch avoids the problem by disabling
DWARF generation (-g0) when producing lparmap.s.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The 440 family of processors don't have a tlbie instruction. So, we
implement TLB invalidates by explicitly searching the TLB with tlbsx.,
then clobbering the relevant entry, if any. Unfortunately the PID for
the search needs to be stored in the MMUCR register, which is also
used by the TLB miss handler. Interrupts were enabled in _tlbie(), so
an interrupt between loading the MMUCR and the tlbsx could cause
incorrect search results, and thus a failure to invalide TLB entries
which needed to be invalidated.
This fixes the problem in both arch/ppc and arch/powerpc by inhibiting
interrupts (even critical and debug interrupts) across the relevant
instructions.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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AFAICT, nobody is using ft_ordered(), and it causes a build warning
to be generated. This patch cleans that up by removing the function
and the commented-out code that calls it.
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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At present, spu_create with an invalid neighbo(u)r will return -ENOSYS,
not -EBADF, but only when spufs.o is built as a module.
This change adds the appropriate errno, making the behaviour the same
as the built-in case.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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In sun4c_init_clean_mmu(), aligning 'kernel_end' using
SUN4C_REAL_PGDIR_ALIGN() is unnecessary since the caller
does this already.
In sun4c_paging_init(), 4 page sizes of "fluff" were added
to the address of &end. This was necessary a long time ago
when sparc32 would allocate some early data structures
by carving out memory chunks after &end but that no longer
occurs.
Signed-off-by: Mark Fortescue <mark@mtfhpc.demon.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This mirrors sparc64 commit 715a0ecc29c850d2b2f76e1803d3f22cd5a0ac0d
sparc_ramdisk_image should always be decremented by KERNBASE.
Signed-off-by: Mark Fortescue <mark@mtfhpc.demon.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When filling in the MBR signature array, the setup code failed to advance
boot_params.edd_mbr_sig_buf_entries, which resulted in the valid data
being ignored.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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At least one machine has been identified in the field which advertises
EDD for all drives but locks up if one attempts an extended read from
a non-primary drive.
The MBR is always at CHS 0-0-1, so there is no reason to use an
extended read, other than the possibility that the BIOS cannot handle
it.
Although this might break as many machines as it fixes (a small number
either way), the current state is a regression but the reverse is not.
Therefore revert to the previous state of not using extended read.
Quite probably the Right Thing to do is to read using plain (CHS) read
and extended read on failure, but that change would definitely have to
go through -mm first.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The Coverity checker spotted that we'd have already oops'ed if
"vlandev" was NULL.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch removes the no longer used EXPORT_SYMBOL(dev_ethtool).
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The layout for struct ioat_desc_sw is non-optimal and causes an extra
cache hit for every descriptor processed. By tightening up the struct
layout and removing one item, we pull in the fields that get used in
the speedpath and get a little better performance.
Before:
-------
struct ioat_desc_sw {
struct ioat_dma_descriptor * hw; /* 0 8
*/
struct list_head node; /* 8 16
*/
int tx_cnt; /* 24 4
*/
/* XXX 4 bytes hole, try to pack */
dma_addr_t src; /* 32 8
*/
__u32 src_len; /* 40 4
*/
/* XXX 4 bytes hole, try to pack */
dma_addr_t dst; /* 48 8
*/
__u32 dst_len; /* 56 4
*/
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 1 boundary (64 bytes) --- */
struct dma_async_tx_descriptor async_tx; /* 64 144
*/
/* --- cacheline 3 boundary (192 bytes) was 16 bytes ago --- */
/* size: 208, cachelines: 4 */
/* sum members: 196, holes: 3, sum holes: 12 */
/* last cacheline: 16 bytes */
}; /* definitions: 1 */
After:
------
struct ioat_desc_sw {
struct ioat_dma_descriptor * hw; /* 0 8
*/
struct list_head node; /* 8 16
*/
int tx_cnt; /* 24 4
*/
__u32 len; /* 28 4
*/
dma_addr_t src; /* 32 8
*/
dma_addr_t dst; /* 40 8
*/
struct dma_async_tx_descriptor async_tx; /* 48 144
*/
/* --- cacheline 3 boundary (192 bytes) --- */
/* size: 192, cachelines: 3 */
}; /* definitions: 1 */
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Steps to reproduce:
modprobe econet
rmmod econet
modprobe econet
Unable to handle kernel paging request at ffffffff8870a098 RIP:
[<ffffffff8040bfb8>] dev_add_pack+0x48/0x90
PGD 203067 PUD 207063 PMD 7817f067 PTE 0
Oops: 0002 [1] PREEMPT SMP
CPU 1
Modules linked in: econet [maaaany]
Pid: 10671, comm: modprobe Not tainted 2.6.23-rc3-bloat #6
RIP: 0010:[<ffffffff8040bfb8>] [<ffffffff8040bfb8>] dev_add_pack+0x48/0x90
RSP: 0000:ffff810076293df8 EFLAGS: 00010202
RAX: ffffffff88659090 RBX: ffffffff88659060 RCX: ffffffff8870a090
RDX: 0000000000000080 RSI: ffffffff805ec660 RDI: ffff810078ce4680
RBP: ffff810076293e08 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffff8040bf88 R11: 0000000000000001 R12: ffff810076293e18
R13: 000000000000001b R14: ffff810076dd06b0 R15: ffffffff886590c0
FS: 00002b96a525dae0(0000) GS:ffff81007e0e2138(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffffffff8870a098 CR3: 000000007bb67000 CR4: 00000000000026e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 10671, threadinfo ffff810076292000, task ffff810078ce4680)
Stack: ffff810076dd06b0 0000000000000000 ffff810076293e38 ffffffff8865b180
0000000000800000 0000000000000000 ffffffff886590c0 ffff810076dd01c8
ffff810076293f78 ffffffff8026723c ffff810076293e48 ffffffff886590d8
Call Trace:
[<ffffffff8865b180>] :econet:econet_proto_init+0x180/0x1da
[<ffffffff8026723c>] sys_init_module+0x15c/0x19e0
[<ffffffff8020c13e>] system_call+0x7e/0x83
Code: 48 89 41 08 48 89 82 e0 c5 5e 80 48 c7 c7 a0 08 5d 80 e8 f1
RIP [<ffffffff8040bfb8>] dev_add_pack+0x48/0x90
RSP <ffff810076293df8>
CR2: ffffffff8870a098
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit 8d5cf596d10d740b69b5f4bbdb54b85abf75810d started to add statically
allocated ax25_protocol's to list. However kfree() was still in place waiting
for unsuspecting ones on module removal.
Steps to reproduce:
modprobe netrom
rmmod netrom
P.S.: code would benefit greatly from list_add/list_del usage
kernel BUG at mm/slab.c:592!
invalid opcode: 0000 [1] PREEMPT SMP
CPU 0
Modules linked in: netrom ax25 af_packet usbcore rtc_cmos rtc_core rtc_lib
Pid: 4477, comm: rmmod Not tainted 2.6.23-rc3-bloat #2
RIP: 0010:[<ffffffff802ac646>] [<ffffffff802ac646>] kfree+0x1c6/0x260
RSP: 0000:ffff810079a05e48 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff81000000c000
RDX: ffff81007e552458 RSI: 0000000000000000 RDI: 000000000000805d
RBP: ffff810079a05e88 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8805d080
R13: ffffffff8805d080 R14: 0000000000000000 R15: 0000000000000282
FS: 00002b73fc98aae0(0000) GS:ffffffff805dc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 000000000053f3b8 CR3: 0000000079ff2000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process rmmod (pid: 4477, threadinfo ffff810079a04000, task ffff8100775aa480)
Stack: ffff810079a05e68 0000000000000246 ffffffff8804eca0 0000000000000000
ffffffff8805d080 00000000000000cf 0000000000000000 0000000000000880
ffff810079a05eb8 ffffffff8803ec90 ffff810079a05eb8 0000000000000000
Call Trace:
[<ffffffff8803ec90>] :ax25:ax25_protocol_release+0xa0/0xb0
[<ffffffff88056ecb>] :netrom:nr_exit+0x6b/0xf0
[<ffffffff80268bf0>] sys_delete_module+0x170/0x1f0
[<ffffffff8025da35>] trace_hardirqs_on+0xd5/0x170
[<ffffffff804835aa>] trace_hardirqs_on_thunk+0x35/0x37
[<ffffffff8020c13e>] system_call+0x7e/0x83
Code: 0f 0b eb fe 66 66 90 66 66 90 48 8b 52 10 48 8b 02 25 00 40
RIP [<ffffffff802ac646>] kfree+0x1c6/0x260
RSP <ffff810079a05e48>
Kernel panic - not syncing: Fatal exception
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current display page is an 8-bit number, even though struct
screen_info gives it a 16-bit number. The number is returned in %bh,
so it needs to be >> 8 before storing.
Special thanks to Jeff Chua for detailed bug reporting.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Probe for hidden SSIDs if initiating pre-authentication scan and SSID
is set for STA interface.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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