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2011-06-06[S390] use generic RCU page-table freeing codeMartin Schwidefsky4-229/+166
Replace the s390 specific rcu page-table freeing code with the generic variant. This requires to duplicate the definition for the struct mmu_table_batch as s390 does not use the generic tlb flush code. While we are at it remove the restriction that page table fragments can not be reused after a single fragment has been freed with rcu and split out allocation and freeing of page tables with pgstes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-06-06[S390] qdio: Split SBAL entry flagsJan Glauber7-153/+96
The qdio SBAL entry flag is made-up of four different values that are independent of one another. Some of the bits are reserved by the hardware and should not be changed by qdio. Currently all four values are overwritten since the SBAL entry flag is defined as an u32. Split the SBAL entry flag into four u8's as defined by the hardware and don't touch the reserved bits. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-06-06[S390] kvm-s390: fix stfle facilities numbers >=64Christian Borntraeger1-0/+1
Currently KVM masks out the known good facilities only for the first double word, but passed the 2nd double word without filtering. This breaks some code on newer systems: [ 0.593966] ------------[ cut here ]------------ [ 0.594086] WARNING: at arch/s390/oprofile/hwsampler.c:696 [ 0.594213] Modules linked in: [ 0.594321] Modules linked in: [ 0.594439] CPU: 0 Not tainted 3.0.0-rc1 #46 [ 0.594564] Process swapper (pid: 1, task: 00000001effa8038, ksp: 00000001effafab8) [ 0.594735] Krnl PSW : 0704100180000000 00000000004ab89a (hwsampler_setup+0x75a/0x7b8) [ 0.594910] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:1 PM:0 EA:3 [ 0.595120] Krnl GPRS: ffffffff00000000 00000000ffffffea ffffffffffffffea 00000000004a98f8 [ 0.595351] 00000000004aa002 0000000000000001 000000000080e720 000000000088b9f8 [ 0.595522] 000000000080d3e8 0000000000000000 0000000000000000 000000000080e464 [ 0.595725] 0000000000000000 00000000005db198 00000000004ab3a2 00000001effafd98 [ 0.595901] Krnl Code: 00000000004ab88c: c0e5000673ca brasl %r14,57a020 [ 0.596071] 00000000004ab892: a7f4fc77 brc 15,4ab180 [ 0.596276] 00000000004ab896: a7f40001 brc 15,4ab898 [ 0.596454] >00000000004ab89a: a7c8ffa1 lhi %r12,-95 [ 0.596657] 00000000004ab89e: a7f4fc71 brc 15,4ab180 [ 0.596854] 00000000004ab8a2: a7f40001 brc 15,4ab8a4 [ 0.597029] 00000000004ab8a6: a7f4ff22 brc 15,4ab6ea [ 0.597230] 00000000004ab8aa: c0200011009a larl %r2,6cb9de [ 0.597441] Call Trace: [ 0.597511] ([<00000000004ab3a2>] hwsampler_setup+0x262/0x7b8) [ 0.597676] [<0000000000875812>] oprofile_arch_init+0x32/0xd0 [ 0.597834] [<0000000000875788>] oprofile_init+0x28/0x74 [ 0.597991] [<00000000001001be>] do_one_initcall+0x3a/0x170 [ 0.598151] [<000000000084fa22>] kernel_init+0x142/0x1ec [ 0.598314] [<000000000057db16>] kernel_thread_starter+0x6/0xc [ 0.598468] [<000000000057db10>] kernel_thread_starter+0x0/0xc [ 0.598606] Last Breaking-Event-Address: [ 0.598707] [<00000000004ab896>] hwsampler_setup+0x756/0x7b8 [ 0.598863] ---[ end trace ce3179037f4e3e5b ]--- So lets also mask the 2nd double word. Facilites 66,76,76,77 should be fine. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-06-06[S390] kvm-s390: Fix host crash on misbehaving guestsChristian Borntraeger1-0/+2
commit 9ff4cfb3fcfd48b49fdd9be7381b3be340853aa4 ([S390] kvm-390: Let kernel exit SIE instruction on work) fixed a problem of commit commit cd3b70f5d4d82f85d1e1d6e822f38ae098cf7c72 ([S390] virtualization aware cpu measurement) but uncovered another one. If a kvm guest accesses guest real memory that doesnt exist, the page fault handler calls the sie hook, which then rewrites the return psw from sie_inst to either sie_exit or sie_reenter. On return, the page fault handler will then detect the wrong access as a kernel fault causing a kernel oops in sie_reenter or sie_exit. We have to add these two addresses to the exception table to allow graceful exits. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-06-06Linux 3.0-rc2v3.0-rc2Linus Torvalds1-1/+1
2011-06-06mm: fix ENOSPC returned by handle_mm_fault()Hugh Dickins1-2/+2
Al Viro observes that in the hugetlb case, handle_mm_fault() may return a value of the kind ENOSPC when its caller is expecting a value of the kind VM_FAULT_SIGBUS: fix alloc_huge_page()'s failure returns. Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-06Merge branch 'for-linus' of ↵Linus Torvalds7-17/+30
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: usb - turn off de-emphasis in s/pdif for cm6206 ALSA: asihpi: Use angle brackets for system includes ALSA: fm801: add error handling if auto-detect fails ALSA: hda - Check pin support EAPD in ad198x_power_eapd_write ALSA: hda - Fix HP and Front pins of ad1988/ad1989 in ad198x_power_eapd() ALSA: 6fire: Don't leak firmware in error path ASoC: Fix wm_hubs input PGA ZC bits ASoC: Fix dapm_is_shared_kcontrol so everything isn't shared
2011-06-06Merge branch 'hwmon-for-linus' of ↵Linus Torvalds2-23/+22
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging: hwmon: (max6642): Better chip detection schema hwmon: (coretemp) Further relax temperature range checks hwmon: (coretemp) Fix TjMax detection for older CPUs hwmon: (coretemp) Relax target temperature range check hwmon: (max6642) Rename temp_fault sysfs attribute to temp2_fault
2011-06-06Merge branch 'fix/asoc' into for-linusTakashi Iwai2-5/+8
2011-06-05Merge branch 'for-linus' of git://android.git.kernel.org/kernel/tegraLinus Torvalds2-2/+5
* 'for-linus' of git://android.git.kernel.org/kernel/tegra: ARM: Tegra: Harmony: Fix conflicting GPIO numbering
2011-06-05ARM: Tegra: Harmony: Fix conflicting GPIO numberingStephen Warren2-2/+5
Currently, both the WM8903 and TPS6586x chips attempt to register with gpiolib using the same GPIO numbers. This causes the audio driver to fail to initialize. To solve this, add a define to board-harmony.h for the TPS6586x, and make board-harmony-power.c use this define, instead of directly referencing TEGRA_NR_GPIOS. This fixes a regression introduced by commit 6f168f2fa60f87e85e0df25e87e2372f22f5eb7c. ARM: tegra: harmony: initialize the TPS65862 PMIC Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Colin Cross <ccross@android.com>
2011-06-05Merge branch 'for-linus' of ↵Linus Torvalds19-468/+635
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (25 commits) btrfs: fix uninitialized variable warning btrfs: add helper for fs_info->closing Btrfs: add mount -o inode_cache btrfs: scrub: add explicit plugging btrfs: use btrfs_ino to access inode number Btrfs: don't save the inode cache if we are deleting this root btrfs: false BUG_ON when degraded Btrfs: don't save the inode cache in non-FS roots Btrfs: make sure we don't overflow the free space cache crc page Btrfs: fix uninit variable in the delayed inode code btrfs: scrub: don't reuse bios and pages Btrfs: leave spinning on lookup and map the leaf Btrfs: check for duplicate entries in the free space cache Btrfs: don't try to allocate from a block group that doesn't have enough space Btrfs: don't always do readahead Btrfs: try not to sleep as much when doing slow caching Btrfs: kill BTRFS_I(inode)->block_group Btrfs: don't look at the extent buffer level 3 times in a row Btrfs: map the node block when looking for readahead targets Btrfs: set range_start to the right start in count_range_bits ...
2011-06-04hwmon: (max6642): Better chip detection schemaPer Dalén1-2/+16
Improve detection of MAX6642 by reading non existing registers (0x04, 0x06 and 0xff). Reading those registers returns the previously read value. Signed-off-by: Per Dalen <per.dalen@appeartv.com> [guenter.roeck@ericsson.com: added second set of register reads] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-06-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds2-1/+2
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] Fix oops caused by queue refcounting failure
2011-06-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds60-219/+380
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (40 commits) tg3: Fix tg3_skb_error_unmap() net: tracepoint of net_dev_xmit sees freed skb and causes panic drivers/net/can/flexcan.c: add missing clk_put net: dm9000: Get the chip in a known good state before enabling interrupts drivers/net/davinci_emac.c: add missing clk_put af-packet: Add flag to distinguish VID 0 from no-vlan. caif: Fix race when conditionally taking rtnl lock usbnet/cdc_ncm: add missing .reset_resume hook vlan: fix typo in vlan_dev_hard_start_xmit() net/ipv4: Check for mistakenly passed in non-IPv4 address iwl4965: correctly validate temperature value bluetooth l2cap: fix locking in l2cap_global_chan_by_psm ath9k: fix two more bugs in tx power cfg80211: don't drop p2p probe responses Revert "net: fix section mismatches" drivers/net/usb/catc.c: Fix potential deadlock in catc_ctrl_run() sctp: stop pending timers and purge queues when peer restart asoc drivers/net: ks8842 Fix crash on received packet when in PIO mode. ip_options_compile: properly handle unaligned pointer iwlagn: fix incorrect PCI subsystem id for 6150 devices ...
2011-06-04btrfs: fix uninitialized variable warningDavid Sterba1-1/+1
With Linus' tree, today's linux-next build (powercp ppc64_defconfig) produced this warning: fs/btrfs/delayed-inode.c: In function 'btrfs_delayed_update_inode': fs/btrfs/delayed-inode.c:1598:6: warning: 'ret' may be used uninitialized in this function Introduced by commit 16cdcec736cd ("btrfs: implement delayed inode items operation"). This fixes a bug in btrfs_update_inode(): if the returned value from btrfs_delayed_update_inode is a nonzero garbage, inode stat data are not updated and several call paths may hit a BUG_ON or fail with strange code. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David Sterba <dsterba@suse.cz>
2011-06-04btrfs: add helper for fs_info->closingDavid Sterba8-16/+20
wrap checking of filesystem 'closing' flag and fix a few missing memory barriers. Signed-off-by: David Sterba <dsterba@suse.cz>
2011-06-04Btrfs: add mount -o inode_cacheChris Mason4-1/+34
This makes the inode map cache default to off until we fix the overflow problem when the free space crcs don't fit inside a single page. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04btrfs: scrub: add explicit pluggingArne Jansen1-3/+4
With the removal of the implicit plugging scrub ends up doing more and smaller I/O than necessary. This patch adds explicit plugging per chunk. Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04btrfs: use btrfs_ino to access inode numberDavid Sterba2-4/+5
commit 4cb5300bc ("Btrfs: add mount -o auto_defrag") accesses inode number directly while it should use the helper with the new inode number allocator. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04Btrfs: don't save the inode cache if we are deleting this rootJosef Bacik1-0/+5
With xfstest 254 I can panic the box every time with the inode number caching stuff on. This is because we clean the inodes out when we delete the subvolume, but then we write out the inode cache which adds an inode to the subvolume inode tree, and then when it gets evicted again the root gets added back on the dead roots list and is deleted again, so we have a double free. To stop this from happening just return 0 if refs is 0 (and we're not the tree root since tree root always has refs of 0). With this fix 254 no longer panics. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Tested-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04btrfs: false BUG_ON when degradedArne Jansen1-1/+1
In degraded mode the struct btrfs_device of missing devs don't have device->name set. A kstrdup of NULL correctly returns NULL. Don't BUG in this case. Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04Btrfs: don't save the inode cache in non-FS rootsliubo1-0/+6
This adds extra checks to make sure the inode map we are caching really belongs to a FS root instead of a special relocation tree. It prevents crashes during balancing operations. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04Btrfs: make sure we don't overflow the free space cache crc pageChris Mason1-8/+19
The free space cache uses only one page for crcs right now, which means we can't have a cache file bigger than the crcs we can fit in the first page. This adds a check to enforce that restriction. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04Btrfs: fix uninit variable in the delayed inode codeChris Mason1-0/+1
The nitems counter needs to start at zero Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-04btrfs: scrub: don't reuse bios and pagesArne Jansen1-49/+65
The current scrub implementation reuses bios and pages as often as possible, allocating them only on start and releasing them when finished. This leads to more problems with the block layer than it's worth. The elevator gets confused when there are more pages added to the bio than bi_size suggests. This patch completely rips out the reuse of bios and pages and allocates them freshly for each submit. Signed-off-by: Arne Jansen <sensille@gmx.net> Signed-off-by: Chris Maosn <chris.mason@oracle.com>
2011-06-04Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds9-28/+41
* 'for-linus' of git://git.kernel.dk/linux-block: block: Use hlist_entry() for io_context.cic_list.first cfq-iosched: Remove bogus check in queue_fail path xen/blkback: potential null dereference in error handling xen/blkback: don't call vbd_size() if bd_disk is NULL block: blkdev_get() should access ->bd_disk only after success CFQ: Fix typo and remove unnecessary semicolon block: remove unwanted semicolons Revert "block: Remove extra discard_alignment from hd_struct." nbd: adjust 'max_part' according to part_shift nbd: limit module parameters to a sane value nbd: pass MSG_* flags to kernel_recvmsg() block: improve the bio_add_page() and bio_add_pc_page() descriptions
2011-06-04Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: strncpy: fix handling of zero lengths
2011-06-04Merge branch 'stable' of ↵Linus Torvalds2-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: asm-generic/unistd.h: support sendmmsg syscall tile: enable CONFIG_BUGVERBOSE
2011-06-04Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds9-97/+136
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix-up free space earlier UBIFS: intialize LPT earlier UBIFS: assert no fixup when writing a node UBIFS: fix clean znode counter corruption in error cases UBIFS: fix memory leak on error path UBIFS: fix shrinker object count reports UBIFS: fix recovery broken by the previous recovery fix UBIFS: amend ubifs_recover_leb interface UBIFS: introduce a "grouped" journal head flag UBIFS: supress false error messages
2011-06-04Merge branch 'for-linus' of ↵Linus Torvalds1-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest: ktest: Ignore unset values of the minconfig in config_bisect ktest: Fix result of rebooting the kernel ktest: Fix off-by-one in config bisect result
2011-06-04Merge branch 'rmobile-fixes-for-linus' of ↵Linus Torvalds3-0/+141
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: ARM: mach-shmobile: add DMAC clock definitions on SH7372 ARM: arch-shmobile: support SDHI card detection on mackerel, using a GPIO sh_mobile_meram: MERAM platform data for LCDC
2011-06-04Merge branch 'sh-fixes-for-linus' of ↵Linus Torvalds14-45/+39
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: dmaengine: shdma: fix a regression: initialise DMA channels for memcpy dmaengine: shdma: Fix up fallout from runtime PM changes. Revert "clocksource: sh_cmt: Runtime PM support" Revert "clocksource: sh_tmu: Runtime PM support" sh: Fix up asm-generic/ptrace.h fallout. sh64: Move from P1SEG to CAC_ADDR for consistent sync. sh64: asm/pgtable.h needs asm/mmu.h sh: asm/tlb.h needs linux/swap.h sh: mark DMA slave ID 0 as invalid sh: Update shmin to reflect PIO dependency. sh: arch/sh/kernel/process_32.c needs linux/prefetch.h. sh: add MMCIF runtime PM support on ecovec sh: switch ap325rxa to dynamically manage the platform camera
2011-06-04Revert "ASoC: Update cx20442 for TTY API change"Linus Torvalds1-5/+3
This reverts commit ed0bd2333cffc3d856db9beb829543c1dfc00982. Since we reverted the TTY API change, we should revert the ASoC update to it too. Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Liam Girdwood <lrg@ti.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-04Revert "tty: make receive_buf() return the amout of bytes received"Linus Torvalds20-128/+115
This reverts commit b1c43f82c5aa265442f82dba31ce985ebb7aa71c. It was broken in so many ways, and results in random odd pty issues. It re-introduced the buggy schedule_work() in flush_to_ldisc() that can cause endless work-loops (see commit a5660b41af6a: "tty: fix endless work loop when the buffer fills up"). It also used an "unsigned int" return value fo the ->receive_buf() function, but then made multiple functions return a negative error code, and didn't actually check for the error in the caller. And it didn't actually work at all. BenH bisected down odd tty behavior to it: "It looks like the patch is causing some major malfunctions of the X server for me, possibly related to PTYs. For example, cat'ing a large file in a gnome terminal hangs the kernel for -minutes- in a loop of what looks like flush_to_ldisc/workqueue code, (some ftrace data in the quoted bits further down). ... Some more data: It -looks- like what happens is that the flush_to_ldisc work queue entry constantly re-queues itself (because the PTY is full ?) and the workqueue thread will basically loop forver calling it without ever scheduling, thus starving the consumer process that could have emptied the PTY." which is pretty much exactly the problem we fixed in a5660b41af6a. Milton Miller pointed out the 'unsigned int' issue. Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reported-by: Milton Miller <miltonm@bga.com> Cc: Stefan Bigler <stefan.bigler@keymile.com> Cc: Toby Gray <toby.gray@realvnc.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-03Merge branch 'master' of ↵John W. Linville15-70/+155
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into for-davem
2011-06-03ALSA: usb - turn off de-emphasis in s/pdif for cm6206Eric Lammerts1-1/+1
CM6206: Turn off de-emphasis channel status bit in S/PDIF output. Signed-off-by: Eric Lammerts <eric@lammerts.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-03UBIFS: fix-up free space earlierBen Gardiner1-8/+8
The free space fixup is currently initiated during mount after the call to ubifs_write_master() which results in a write to PEBs; this has been observed with the patch 'assert no fixup when writing a node' applied: Move the free space fixup on mount to before the calls to ubifs_recover_inl_heads() and ubifs_write_master(). This results in no assertions with the previously mentioned patch applied. Artem: tweaked the patch a bit Signed-off-by: Ben Gardiner <bengardiner@nanometrics> Reviewed-by: Matthew L. Creech <mlcreech@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-06-03UBIFS: intialize LPT earlierBen Gardiner1-13/+16
The current 'mount_ubifs()' implementation does not initialize the LPT until the the master node is marked dirty. Move the LPT initialization to before marking the master node dirty. This is a preparation for the next patch which will move the free-space-fixup check to before marking the master node dirty, because we have to fix-up the free space before doing any writes. Artem: massaged the patch and commit message. Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca> Reviewed-by: Matthew L. Creech <mlcreech@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-06-03UBIFS: assert no fixup when writing a nodeBen Gardiner1-0/+2
The current free space fixup can result in some writing to the UBI volume when the space_fixup flag is set. To catch instances where UBIFS is writing to the NAND while the space_fixup flag is set, add an assert to ubifs_write_node(). Artem: tweaked the patch, added similar assertion to the write buffer write path. Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca> Reviewed-by: Matthew L. Creech <mlcreech@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-06-03UBIFS: fix clean znode counter corruption in error casesArtem Bityutskiy1-4/+5
UBIFS maintains per-filesystem and global clean znode counters ('c->clean_zn_cnt' and 'ubifs_clean_zn_cnt'). It is important to maintain correct values there since the shrinker relies on 'ubifs_clean_zn_cnt'. However, in case of failures during commit the counters were corrupted. E.g., if a failure happens in the middle of 'write_index()', then some nodes in the commit list ('c->cnext') are marked as clean, and some are marked as dirty. And the 'ubifs_destroy_tnc_subtree()' frees does not retrun correct count, and we end up with non-zero 'c->clean_zn_cnt' when unmounting. This means that if we have 2 file-sytem and one of them fails, and we unmount it, 'ubifs_clean_zn_cnt' stays incorrect and confuses the shrinker. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-06-03UBIFS: fix memory leak on error pathArtem Bityutskiy1-0/+1
UBIFS leaks memory on error path in 'ubifs_jnl_update()' in case of write failure because it forgets to free the 'struct ubifs_dent_node *dent' object. Although the object is small, the alignment can make it large - e.g., 2KiB if the min. I/O unit is 2KiB. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@kernel.org
2011-06-03UBIFS: fix shrinker object count reportsArtem Bityutskiy1-1/+5
Sometimes VM asks the shrinker to return amount of objects it can shrink, and we return the ubifs_clean_zn_cnt in that case. However, it is possible that this counter is negative for a short period of time, due to the way UBIFS TNC code updates it. And I can observe the following warnings sometimes: shrink_slab: ubifs_shrinker+0x0/0x2b7 [ubifs] negative objects to delete nr=-8541616642706119788 This patch makes sure UBIFS never returns negative count of objects. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@kernel.org
2011-06-03Blackfin: strncpy: fix handling of zero lengthsSteven Miao1-1/+1
The jump to 4f will cause the NUL padding loop to run at least one time, so if string length is zero just jump to the end. Otherwise we wrongly write one NUL byte when size==0. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-06-03ALSA: asihpi: Use angle brackets for system includesJoe Perches1-1/+1
Use the normal include style. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-03ALSA: fm801: add error handling if auto-detect failsDan Carpenter1-2/+11
In the original code if auto detect failed and tea575x_tuner == 4 then we copy bogus information to chip->tea.card. I've changed the autodetect code to cleanup and return -ENODEV on error instead. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-03ALSA: hda - Check pin support EAPD in ad198x_power_eapd_writeRaymond Yau1-2/+4
Check whether the pin supports EAPD in ad198x_power_eapd_write. Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-03ALSA: hda - Fix HP and Front pins of ad1988/ad1989 in ad198x_power_eapd()Takashi Iwai1-6/+4
In ad198x_power_eapd(), wrong pin NIDs are used for controlling EAPD for HP and Front outputs of AD1988/AD1989. These are actually same with the ones for AD1984 & co, port-A is 0x11 and port-D 0x12. Reported-by: Raymond Yau <superquad.vortex2@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-03tg3: Fix tg3_skb_error_unmap()Matt Carlson1-1/+1
This function attempts to free one fragment beyond the number of fragments that were actually mapped. This patch brings back the limit to the correct spot. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Tested-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-03net: tracepoint of net_dev_xmit sees freed skb and causes panicKoki Sanagi2-7/+12
Because there is a possibility that skb is kfree_skb()ed and zero cleared after ndo_start_xmit, we should not see the contents of skb like skb->len and skb->dev->name after ndo_start_xmit. But trace_net_dev_xmit does that and causes panic by NULL pointer dereference. This patch fixes trace_net_dev_xmit not to see the contents of skb directly. If you want to reproduce this panic, 1. Get tracepoint of net_dev_xmit on 2. Create 2 guests on KVM 2. Make 2 guests use virtio_net 4. Execute netperf from one to another for a long time as a network burden 5. host will panic(It takes about 30 minutes) Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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