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2007-12-05regression: bfs endianness bugAl Viro1-1/+2
BFS_FILEBLOCKS() expects struct bfs_inode * (on-disk data, with little- endian fields), not struct bfs_inode_info * (in-core stuff, with host- endian ones). It's a macro and fields with the right names are present in bfs_inode_info, so it compiles, but on big-endian host it gives bogus results. Introduced in commit f433dc56344cb72cc3de5ba0819021cec3aef807 ("Fixes to the BFS filesystem driver"). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05fcrypt endianness misannotationsAl Viro1-44/+44
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05no need to mess with KBUILD_CFLAGS on uml-i386 anymoreAl Viro1-5/+0
Now that X86_32 is provided on Kconfig level for uml-i386, there's no need to play with it explicitly on Makefile level anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05regression: cifs endianness bugAl Viro1-16/+17
access_flags_to_mode() gets on-the-wire data (little-endian) and treats it as host-endian. Introduced in commit e01b64001359034d04c695388870936ed3d1b56b ("[CIFS] enable get mode from ACL when cifsacl mount option specified") Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05VM/Security: add security hook to do_brkEric Paris1-0/+4
Given a specifically crafted binary do_brk() can be used to get low pages available in userspace virtual memory and can thus be used to circumvent the mmap_min_addr low memory protection. Add security checks in do_brk(). Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Alan Cox <alan@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05SLUB's ksize() fails for size > 2048Vegard Nossum1-1/+5
I can't pass memory allocated by kmalloc() to ksize() if it is allocated by SLUB allocator and size is larger than (I guess) PAGE_SIZE / 2. The error of ksize() seems to be that it does not check if the allocation was made by SLUB or the page allocator. Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Christoph Lameter <clameter@sgi.com>, Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05proc: fix proc_dir_entry refcountingAlexey Dobriyan5-21/+5
Creating PDEs with refcount 0 and "deleted" flag has problems (see below). Switch to usual scheme: * PDE is created with refcount 1 * every de_get does +1 * every de_put() and remove_proc_entry() do -1 * once refcount reaches 0, PDE is freed. This elegantly fixes at least two following races (both observed) without introducing new locks, without abusing old locks, without spreading lock_kernel(): 1) PDE leak remove_proc_entry de_put ----------------- ------ [refcnt = 1] if (atomic_read(&de->count) == 0) if (atomic_dec_and_test(&de->count)) if (de->deleted) /* also not taken! */ free_proc_entry(de); else de->deleted = 1; [refcount=0, deleted=1] 2) use after free remove_proc_entry de_put ----------------- ------ [refcnt = 1] if (atomic_dec_and_test(&de->count)) if (atomic_read(&de->count) == 0) free_proc_entry(de); /* boom! */ if (de->deleted) free_proc_entry(de); BUG: unable to handle kernel paging request at virtual address 6b6b6b6b printing eip: c10acdda *pdpt = 00000000338f8001 *pde = 0000000000000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: af_packet ipv6 cpufreq_ondemand loop serio_raw psmouse k8temp hwmon sr_mod cdrom Pid: 23161, comm: cat Not tainted (2.6.24-rc2-8c0863403f109a43d7000b4646da4818220d501f #4) EIP: 0060:[<c10acdda>] EFLAGS: 00210097 CPU: 1 EIP is at strnlen+0x6/0x18 EAX: 6b6b6b6b EBX: 6b6b6b6b ECX: 6b6b6b6b EDX: fffffffe ESI: c128fa3b EDI: f380bf34 EBP: ffffffff ESP: f380be44 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process cat (pid: 23161, ti=f380b000 task=f38f2570 task.ti=f380b000) Stack: c10ac4f0 00000278 c12ce000 f43cd2a8 00000163 00000000 7da86067 00000400 c128fa20 00896b18 f38325a8 c128fe20 ffffffff 00000000 c11f291e 00000400 f75be300 c128fa20 f769c9a0 c10ac779 f380bf34 f7bfee70 c1018e6b f380bf34 Call Trace: [<c10ac4f0>] vsnprintf+0x2ad/0x49b [<c10ac779>] vscnprintf+0x14/0x1f [<c1018e6b>] vprintk+0xc5/0x2f9 [<c10379f1>] handle_fasteoi_irq+0x0/0xab [<c1004f44>] do_IRQ+0x9f/0xb7 [<c117db3b>] preempt_schedule_irq+0x3f/0x5b [<c100264e>] need_resched+0x1f/0x21 [<c10190ba>] printk+0x1b/0x1f [<c107c8ad>] de_put+0x3d/0x50 [<c107c8f8>] proc_delete_inode+0x38/0x41 [<c107c8c0>] proc_delete_inode+0x0/0x41 [<c1066298>] generic_delete_inode+0x5e/0xc6 [<c1065aa9>] iput+0x60/0x62 [<c1063c8e>] d_kill+0x2d/0x46 [<c1063fa9>] dput+0xdc/0xe4 [<c10571a1>] __fput+0xb0/0xcd [<c1054e49>] filp_close+0x48/0x4f [<c1055ee9>] sys_close+0x67/0xa5 [<c10026b6>] sysenter_past_esp+0x5f/0x85 ======================= Code: c9 74 0c f2 ae 74 05 bf 01 00 00 00 4f 89 fa 5f 89 d0 c3 85 c9 57 89 c7 89 d0 74 05 f2 ae 75 01 4f 89 f8 5f c3 89 c1 89 c8 eb 06 <80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 c3 90 90 90 57 83 c9 EIP: [<c10acdda>] strnlen+0x6/0x18 SS:ESP 0068:f380be44 Also, remove broken usage of ->deleted from reiserfs: if sget() succeeds, module is already pinned and remove_proc_entry() can't happen => nobody can mark PDE deleted. Dummy proc root in netns code is not marked with refcount 1. AFAICS, we never get it, it's just for proper /proc/net removal. I double checked CLONE_NETNS continues to work. Patch survives many hours of modprobe/rmmod/cat loops without new bugs which can be attributed to refcounting. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05jbd: Fix assertion failure in fs/jbd/checkpoint.cJan Kara3-10/+12
Before we start committing a transaction, we call __journal_clean_checkpoint_list() to cleanup transaction's written-back buffers. If this call happens to remove all of them (and there were already some buffers), __journal_remove_checkpoint() will decide to free the transaction because it isn't (yet) a committing transaction and soon we fail some assertion - the transaction really isn't ready to be freed :). We change the check in __journal_remove_checkpoint() to free only a transaction in T_FINISHED state. The locking there is subtle though (as everywhere in JBD ;(). We use j_list_lock to protect the check and a subsequent call to __journal_drop_transaction() and do the same in the end of journal_commit_transaction() which is the only place where a transaction can get to T_FINISHED state. Probably I'm too paranoid here and such locking is not really necessary - checkpoint lists are processed only from log_do_checkpoint() where a transaction must be already committed to be processed or from __journal_clean_checkpoint_list() where kjournald itself calls it and thus transaction cannot change state either. Better be safe if something changes in future... Signed-off-by: Jan Kara <jack@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05mm: fix XIP file writesNick Piggin1-1/+1
Writing to XIP files at a non-page-aligned offset results in data corruption because the writes were always sent to the start of the page. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05gpio_cs5535: disable AUX on outputBen Gardner1-0/+5
The AMD CS5535/CS5536 GPIO has two alternate output modes: AUX-1 and AUX-2. When either AUX is enabled, the cs5535_gpio driver cannot control the output. Some BIOS code for the Geode processor enables AUX-1 for GPIO-1, which configures it as the PC BEEP output. This patch will disable AUX-1 and AUX-2 when the user enables output. Signed-of-by: Ben Gardner <gardner.ben@gmail.com> Cc: Richard Knutsson <ricknu-0@student.ltu.se> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05Avoid potential NULL dereference in unregister_sysctl_tablePavel Emelyanov1-0/+4
register_sysctl_table() can return NULL sometimes, e.g. when kmalloc() returns NULL or when sysctl check fails. I've also noticed, that many (most?) code in the kernel doesn't check for the return value from register_sysctl_table() and later simply calls the unregister_sysctl_table() with potentially NULL argument. This is unlikely on a common kernel configuration, but in case we're dealing with modules and/or fault-injection support, there's a slight possibility of an OOPS. Changing all the users to check for return code from the registering does not look like a good solution - there are too many code doing this and failure in sysctl tables registration is not a good reason to abort module loading (in most of the cases). So I think, that we can just have this check in unregister_sysctl_table just to avoid accidental OOPS-es (actually, the unregister_sysctl_table() did exactly this, before the start_unregistering() appeared). Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05Blackfin SPI driver: reconfigure speed_hz and bits_per_word in each spi transferBryan Wu1-7/+45
- reconfigure SPI baud from speed_hz of each spi transfer - according to spi_transfer.bits_per_word to reprogram register and setup correct SPI operation handlers Signed-off-by: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05Blackfin SPI driver: move hard coded pin_req to board fileBryan Wu2-21/+8
Remove some sort of bloaty code, try to get these pin_req arrays built at compile-time - move this static things to the blackfin board file - add pin_req array to struct bfin5xx_spi_master - tested on BF537/BF548 with SPI flash Signed-off-by: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05Blackfin SPI driver: use void __iomem * for regs_baseBryan Wu1-5/+4
Signed-off-by: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05Blackfin SPI driver: use cpu_relax() to replace continue in while busywaitBryan Wu1-39/+39
Signed-off-by: Bryan Wu <bryan.wu@analog.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin: resequence DMA start/stopSonic Zhang1-11/+19
Set correct baud for spi mmc and enable SPI only after DMA is started. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin: update handling of delay-after-deselectBryan Wu2-16/+10
Move cs_chg_udelay handling (specific to this driver) to cs_deactive(), fixing a bug when some SPI LCD driver needs delay after cs_deactive. Fix bug reported by Cameron Barfield <cbarfield@cyberdata.net> https://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?action=ForumBrowse&forum_id=39&_forum_action=ForumMessageBrowse&thread_id=23630&feedback=Message%20replied. Cc: Cameron Barfield <cbarfield@cyberdata.net> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin: bugfix for 8..16 bit word sizesBryan Wu1-1/+1
Fix bug in u16_cs_chg_reader to read data_len-2 bytes data firstly, then read out the last 2 bytes data Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin: handle multiple spi_mastersBryan Wu1-182/+189
Move global SPI regs_base and dma_ch to struct driver_data. Test on BF54x SPI Flash with 2 spi_master devices enabled. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin: relocate spin/waitsSonic Zhang1-32/+52
Move spin/waits to more correct locations in bfin SPI driver. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin: change handling of communication parametersSonic Zhang1-75/+87
Fix SPI driver to work with SPI flash ST M25P16 on bf548 Currently the SPI driver enables the SPI controller and sets the SPI baud register for each SPI transfer. But they should never be changed within a SPI message session, in which several SPI transfers are pumped. This patch moves SPI setting to the begining of a message session, and never disables SPI controller until an error occurs. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin, rearrange portmux callsSonic Zhang1-25/+28
Move pin muxing to setup and cleanup methods. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin uses portmux for additional bussesSonic Zhang1-20/+31
Use portmux mechanism to support SPI busses 1 and 2, instead of just the original bus 0. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin uses platform device resourcesBryan Wu1-41/+83
Update spi driver to support multi-ports by using platform resources; tested on STAMP537+SPI_MMC, other boards need more testing. Plus other minor updates. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin, don't bypass spi frameworkMike Frysinger1-0/+12
Prevent people from setting bits in ctl_reg that the SPI framework already handles, hopefully we can one day drop ctl_reg completely Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin handles spi_transfer.cs_changeBryan Wu1-22/+54
Respect per-transfer cs_change field (protocol tweaking support) by adding and using cs_active/cs_deactive functions. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: spi_bfin cleanups, error handlingBryan Wu1-64/+47
Cleanup and error handling - add error handling in SPI bus driver with selecting clients - use proper defines to access Blackfin MMRs - remove useless SSYNCs - cleaner use of portmux calls Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: bfin spi uses portmux callsMichael Hennerich2-7/+23
Use new Blackfin portmux interface, add error handling. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: initial BF54x SPI supportBryan Wu2-70/+86
Initial BF54x SPI support - support BF54x SPI0 - clean up some code (whitespace etc) - will support multiports in the future - start using portmux calls Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: use simplified spi_sync() calling conventionMarc Pignat3-26/+9
Given the patch which simplifies the spi_sync calling convention, this one updates the callers of that routine which tried using it according to the previous specification. (Most didn't.) Signed-off-by: Marc Pignat <marc.pignat@hevs.ch> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: simplify spi_sync() calling conventionMarc Pignat1-8/+5
Simplify spi_sync calling convention, eliminating the need to check both the return value AND the message->status. In consequence, this corrects misbehaviours of spi_read and spi_write (which only checked the former) and their callers. Signed-off-by: Marc Pignat <marc.pignat@hevs.ch> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05spi: at25 driver is for EEPROM not FLASHDavid Brownell1-0/+7
Add comment to at25 driver that it's for EEPROM chips, not FLASH chips ... the AT25 series has both types of chip, and sometimes they're even pin-compatible. The command sets are different, as is the treatment of erasure. (FLASH needs explicit erasure, but with EEPROM it's implicit.) Note that all vendors seem to have this same confusion in their *25* series SPI memory parts. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05SPI: use mutex not semaphoreDavid Brownell1-3/+3
Make spi_write_then_read() use a mutex not a binary semaphore. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05Add EXPORT_SYMBOL(ksize);Tetsuo Handa2-0/+2
mm/slub.c exports ksize(), but mm/slob.c and mm/slab.c don't. It's used by binfmt_flat, which can be built as a module. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Christoph Lameter <clameter@sgi.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05mm/backing-dev.c: fix percpu_counter_destroy call bug in bdi_initDenis Cheng1-2/+2
this call should use the array index j, not i. But with this approach, just one int i is enough, int j is not needed. Signed-off-by: Denis Cheng <crquan@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05ufs: fix nexstep dir block sizeEvgeniy Dushistov2-3/+3
This patch fixes regression, introduced since 2.6.16. NextStep variant of UFS as OpenStep uses directory block size equals to 1024. Without this change, ufs_check_page fails in many cases. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: Dave Bailey <dsbailey@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05RTC: assure proper memory ordering with respect to RTC_DEV_BUSY flagJiri Kosina2-5/+5
We must make sure that the RTC_DEV_BUSY flag has proper lock semantics, i.e. that the RTC_DEV_BUSY stores clearing the flag don't get reordered before the preceeding stores and loads and vice versa. Spotted by Nick Piggin. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: David Brownell <david-b@pacbell.net> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05fix clone(CLONE_NEWPID)Eric W. Biederman1-15/+6
Currently we are complicating the code in copy_process, the clone ABI, and if we fix the bugs sys_setsid itself, with an unnecessary open coded version of sys_setsid. So just simplify everything and don't special case the session and pgrp of the initial process in a pid namespace. Having this special case actually presents to user space the classic linux startup conditions with session == pgrp == 0 for /sbin/init. We already handle sending signals to processes in a child pid namespace. We need to handle sending signals to processes in a parent pid namespace for cases like SIGCHILD and SIGIO. This makes nothing extra visible inside a pid namespace. So this extra special case appears to have no redeeming merits. Further removing this special case increases the flexibility of how we can use pid namespaces, by not requiring the initial process in a pid namespace to be a daemon. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05aio: only account I/O wait time in read_events if there are active requestsJeff Moyer1-1/+6
On 2.6.24, top started showing 100% iowait on one CPU when a UML instance was running (but completely idle). The UML code sits in io_getevents waiting for an event to be submitted and completed. Fix this by checking ctx->reqs_active before scheduling to determine whether or not we are waiting for I/O. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Cc: Zach Brown <zach.brown@oracle.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Jeff Dike <jdike@addtoit.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-04Merge branch 'upstream-fixes' of ↵Linus Torvalds12-14/+26
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: PHY: Add the phy_device_release device method. gianfar: fix compile warning pasemi_mac: Fix reuse of free'd skb SMC911X: Fix using of dereferenced skb after netif_rx sky2: recovery deadlock fix Fix memory corruption in fec_mpc52xx Don't claim to do IPv6 checksum offload cxgb - revert file mode changes.
2007-12-04PHY: Add the phy_device_release device method.Anton Vorontsov3-4/+18
Lately I've got this nice badness on mdio bus removal: Device 'e0103120:06' does not have a release() function, it is broken and must be fixed. ------------[ cut here ]------------ Badness at drivers/base/core.c:107 NIP: c015c1a8 LR: c015c1a8 CTR: c0157488 REGS: c34bdcf0 TRAP: 0700 Not tainted (2.6.23-rc5-g9ebadfbb-dirty) MSR: 00029032 <EE,ME,IR,DR> CR: 24088422 XER: 00000000 ... [c34bdda0] [c015c1a8] device_release+0x78/0x80 (unreliable) [c34bddb0] [c01354cc] kobject_cleanup+0x80/0xbc [c34bddd0] [c01365f0] kref_put+0x54/0x6c [c34bdde0] [c013543c] kobject_put+0x24/0x34 [c34bddf0] [c015c384] put_device+0x1c/0x2c [c34bde00] [c0180e84] mdiobus_unregister+0x2c/0x58 ... Though actually there is nothing broken, it just device subsystem core expects another "pattern" of resource managment. This patch implement phy device's release function, thus we're getting rid of this badness. Also small hidden bug fixed, hope none other introduced. ;-) Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04gianfar: fix compile warningGrant Likely1-1/+1
Eliminate an uninitialized variable warning. The code is correct, but a pointer to the automatic variable 'addr' is passed to dma_alloc_coherent. Since addr has never been initialized, and the compiler doesn't know what dma_alloc_coherent will do with it, it complains. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04pasemi_mac: Fix reuse of free'd skbOlof Johansson1-1/+1
Turns out we're freeing the skb when we detect CRC error, but we're not clearing out info->skb. We could either clear it and have the stack reallocate it, or just leave it and the rx ring refill code will reuse the one that was allocated. Reusing a freed skb obviously caused some nasty crashes of various kind, as reported by Brent Baude and David Woodhouse. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04SMC911X: Fix using of dereferenced skb after netif_rxWang Chen1-1/+1
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04sky2: recovery deadlock fixStephen Hemminger1-4/+2
Prevent deadlock in sky2 recovery logic. sky2_down calls napi_synchronize which gets stuck if napi was already disabled. Fix by rearranging slightly and not calling napi_disable until after both ports are stopped. The napi_disable probably is being overly paranoid, but it is safe now. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04Fix memory corruption in fec_mpc52xxJon Smirl1-2/+2
The mpc5200 fec driver is corrupting memory. This patch fixes two bugs where the wrong skb was being referenced. Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04Don't claim to do IPv6 checksum offloadDavid Woodhouse1-1/+1
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04cxgb - revert file mode changes.Divy Le Ray4-0/+0
revert inavertant file mode changes Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04pata_amd/pata_via: de-couple programming of PIO/MWDMA and UDMA timingsBartlomiej Zolnierkiewicz2-4/+5
* Don't program UDMA timings when programming PIO or MWDMA modes. This has also a nice side-effect of fixing regression added by commit 681c80b5d96076f447e8101ac4325c82d8dce508 ("libata: correct handling of SRST reset sequences") (->set_piomode method for PIO0 is called before ->cable_detect method which checks UDMA timings to get the cable type). * Bump driver version. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Tested-by: "Thomas Lindroth" <thomas.lindroth@gmail.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04ahci: add the Device IDs of MCP79 AHCI controller to ahci.cpeerchen1-0/+4
Add the device IDs of legacy mode of MCP79 AHCI controller to ahci.c Signed-off-by: Peer Chen <peerchen@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 04:51:11 +0300