aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2011-04-25Btrfs: fix missing mutex_unlock in btrfs_del_dir_entries_in_log()Tsutomu Itoh1-2/+5
It is necessary to unlock mutex_lock before it return an error when btrfs_alloc_path() fails. Signed-off-by: Tsutomu Itoh <[email protected]> Signed-off-by: Chris Mason <[email protected]>
2011-04-25eCryptfs: Add reference counting to lower filesTyler Hicks6-59/+92
For any given lower inode, eCryptfs keeps only one lower file open and multiplexes all eCryptfs file operations through that lower file. The lower file was considered "persistent" and stayed open from the first lookup through the lifetime of the inode. This patch keeps the notion of a single, per-inode lower file, but adds reference counting around the lower file so that it is closed when not currently in use. If the reference count is at 0 when an operation (such as open, create, etc.) needs to use the lower file, a new lower file is opened. Since the file is no longer persistent, all references to the term persistent file are changed to lower file. Locking is added around the sections of code that opens the lower file and assign the pointer in the inode info, as well as the code the fputs the lower file when all eCryptfs users are done with it. This patch is needed to fix issues, when mounted on top of the NFSv3 client, where the lower file is left silly renamed until the eCryptfs inode is destroyed. Signed-off-by: Tyler Hicks <[email protected]>
2011-04-25eCryptfs: dput dentries returned from dget_parentTyler Hicks1-2/+2
Call dput on the dentries previously returned by dget_parent() in ecryptfs_rename(). This is needed for supported eCryptfs mounts on top of the NFSv3 client. Signed-off-by: Tyler Hicks <[email protected]>
2011-04-25eCryptfs: Remove extra d_delete in ecryptfs_rmdirTyler Hicks1-2/+0
vfs_rmdir() already calls d_delete() on the lower dentry. That was being duplicated in ecryptfs_rmdir() and caused a NULL pointer dereference when NFSv3 was the lower filesystem. Signed-off-by: Tyler Hicks <[email protected]>
2011-04-25x86, setup: When probing memory with e801, use ax/bx as a pairH. Peter Anvin1-1/+1
When we use BIOS function e801 to probe memory, we should use ax/bx (or cx/dx) as a pair, not mix and match. This was a typo during the translation from assembly code, and breaks at least one set of machines in the field (which return cx = dx = 0). Reported-and-tested-by: Chris Samuel <[email protected]> Fix-proposed-by: Thomas Meyer <[email protected]> Link: http://lkml.kernel.org/r/[email protected]
2011-04-25net: provide cow_metrics() methods to blackhole dst_opsHeld Bernhard2-0/+14
Since commit 62fa8a846d7d (net: Implement read-only protection and COW'ing of metrics.) the kernel throws an oops. [ 101.620985] BUG: unable to handle kernel NULL pointer dereference at (null) [ 101.621050] IP: [< (null)>] (null) [ 101.621084] PGD 6e53c067 PUD 3dd6a067 PMD 0 [ 101.621122] Oops: 0010 [#1] SMP [ 101.621153] last sysfs file: /sys/devices/virtual/ppp/ppp/uevent [ 101.621192] CPU 2 [ 101.621206] Modules linked in: l2tp_ppp pppox ppp_generic slhc l2tp_netlink l2tp_core deflate zlib_deflate twofish_x86_64 twofish_common des_generic cbc ecb sha1_generic hmac af_key iptable_filter snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device loop snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm snd_timer snd i2c_i801 iTCO_wdt psmouse soundcore snd_page_alloc evdev uhci_hcd ehci_hcd thermal [ 101.621552] [ 101.621567] Pid: 5129, comm: openl2tpd Not tainted 2.6.39-rc4-Quad #3 Gigabyte Technology Co., Ltd. G33-DS3R/G33-DS3R [ 101.621637] RIP: 0010:[<0000000000000000>] [< (null)>] (null) [ 101.621684] RSP: 0018:ffff88003ddeba60 EFLAGS: 00010202 [ 101.621716] RAX: ffff88003ddb5600 RBX: ffff88003ddb5600 RCX: 0000000000000020 [ 101.621758] RDX: ffffffff81a69a00 RSI: ffffffff81b7ee61 RDI: ffff88003ddb5600 [ 101.621800] RBP: ffff8800537cd900 R08: 0000000000000000 R09: ffff88003ddb5600 [ 101.621840] R10: 0000000000000005 R11: 0000000000014b38 R12: ffff88003ddb5600 [ 101.621881] R13: ffffffff81b7e480 R14: ffffffff81b7e8b8 R15: ffff88003ddebad8 [ 101.621924] FS: 00007f06e4182700(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000 [ 101.621971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 101.622005] CR2: 0000000000000000 CR3: 0000000045274000 CR4: 00000000000006e0 [ 101.622046] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.622087] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 101.622129] Process openl2tpd (pid: 5129, threadinfo ffff88003ddea000, task ffff88003de9a280) [ 101.622177] Stack: [ 101.622191] ffffffff81447efa ffff88007d3ded80 ffff88003de9a280 ffff88007d3ded80 [ 101.622245] 0000000000000001 ffff88003ddebbb8 ffffffff8148d5a7 0000000000000212 [ 101.622299] ffff88003dcea000 ffff88003dcea188 ffffffff00000001 ffffffff81b7e480 [ 101.622353] Call Trace: [ 101.622374] [<ffffffff81447efa>] ? ipv4_blackhole_route+0x1ba/0x210 [ 101.622415] [<ffffffff8148d5a7>] ? xfrm_lookup+0x417/0x510 [ 101.622450] [<ffffffff8127672a>] ? extract_buf+0x9a/0x140 [ 101.622485] [<ffffffff8144c6a0>] ? __ip_flush_pending_frames+0x70/0x70 [ 101.622526] [<ffffffff8146fbbf>] ? udp_sendmsg+0x62f/0x810 [ 101.622562] [<ffffffff813f98a6>] ? sock_sendmsg+0x116/0x130 [ 101.622599] [<ffffffff8109df58>] ? find_get_page+0x18/0x90 [ 101.622633] [<ffffffff8109fd6a>] ? filemap_fault+0x12a/0x4b0 [ 101.622668] [<ffffffff813fb5c4>] ? move_addr_to_kernel+0x64/0x90 [ 101.622706] [<ffffffff81405d5a>] ? verify_iovec+0x7a/0xf0 [ 101.622739] [<ffffffff813fc772>] ? sys_sendmsg+0x292/0x420 [ 101.622774] [<ffffffff810b994a>] ? handle_pte_fault+0x8a/0x7c0 [ 101.622810] [<ffffffff810b76fe>] ? __pte_alloc+0xae/0x130 [ 101.622844] [<ffffffff810ba2f8>] ? handle_mm_fault+0x138/0x380 [ 101.622880] [<ffffffff81024af9>] ? do_page_fault+0x189/0x410 [ 101.622915] [<ffffffff813fbe03>] ? sys_getsockname+0xf3/0x110 [ 101.622952] [<ffffffff81450c4d>] ? ip_setsockopt+0x4d/0xa0 [ 101.622986] [<ffffffff813f9932>] ? sockfd_lookup_light+0x22/0x90 [ 101.623024] [<ffffffff814b61fb>] ? system_call_fastpath+0x16/0x1b [ 101.623060] Code: Bad RIP value. [ 101.623090] RIP [< (null)>] (null) [ 101.623125] RSP <ffff88003ddeba60> [ 101.623146] CR2: 0000000000000000 [ 101.650871] ---[ end trace ca3856a7d8e8dad4 ]--- [ 101.651011] __sk_free: optmem leakage (160 bytes) detected. The oops happens in dst_metrics_write_ptr() include/net/dst.h:124: return dst->ops->cow_metrics(dst, p); dst->ops->cow_metrics is NULL and causes the oops. Provide cow_metrics() methods, like we did in commit 214f45c91bb (net: provide default_advmss() methods to blackhole dst_ops) Signed-off-by: Held Bernhard <[email protected]> Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-25ARM: Davinci: Fix I2C build errorsRussell King - ARM Linux1-0/+6
Several Davinci platforms select the I2C EEPROM support, but don't select I2C support. This causes I2C EEPROM support to be built into the kernel, but I2C support may not be configured to be built in. This leads to linker errors due to missing I2C symbols. Arrange for I2C to be selected whenever EEPROM_AT24 is selected. Signed-off-by: Russell King <[email protected]> Signed-off-by: Sekhar Nori <[email protected]>
2011-04-25DA830: fix SPI1 base addressSergei Shtylyov1-3/+9
Commit 54ce6883d29630ff334bee4256a25e3f8719a181 (davinci: da8xx: add spi resources and registration routine) wrongly assumed that SPI1 is mapped at the same address on DA830/OMAP-L137 and DA850/OMAP-L138; actually, the base address was valid only for the latter SoC. Teach the code to pass the correct SPI1 memory resource for both SoCs... Signed-off-by: Sergei Shtylyov <[email protected]> Signed-off-by: Sekhar Nori <[email protected]>
2011-04-25davinci: mityomapl138: Use auto-probe to determine attached PHY IDMichael Williamson1-1/+1
Current board configurations involving the MityDSP-L138 and MityARM-1808 only have one attached PHY, but it's address may not be the same. Default the behavior to auto-probe for the PHY and use the first one found. Signed-off-by: Michael Williamson <[email protected]> Signed-off-by: Sekhar Nori <[email protected]>
2011-04-25davinci: mityomapl138: Use correct id for NAND controllerMichael Williamson1-1/+1
For the MityDSP-L138/MityARM-1808 SOMS, the NAND controller id (which needs to correspond to the chipselect, and is used for controlling the HW ECC computation) is not correct. Fix it. Signed-off-by: Michael Williamson <[email protected]> Signed-off-by: Sekhar Nori <[email protected]>
2011-04-24cdc_ncm: fix short packet issue on some devicesHans Petter Selasky1-2/+2
The default maximum transmit length for NCM USB frames should be so that a short packet happens at the end if the device supports a length greater than the defined maximum. This is achieved by adding 4 bytes to the maximum length so that the existing logic can fit a short packet there. Signed-off-by: Hans Petter Selasky <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-25ARM: pxa/magician: bq24022 regulator needs to be enabledPhilipp Zabel1-1/+1
Add REGULATOR_CHANGE_STATUS flag to magician bq24022 regulator to enable charging. Signed-off-by: Philipp Zabel <[email protected]> Signed-off-by: Eric Miao <[email protected]>
2011-04-25ARM: pxa/hx4700: bq24022 regulator needs to be enabledPaul Parsons1-1/+1
Add REGULATOR_CHANGE_STATUS flag to hx4700 bq24022 regulator. Without this flag the bq24022 cannot be enabled and the battery will not charge. Signed-off-by: Paul Parsons <[email protected]> Cc: Philipp Zabel <[email protected]> Tested-by: Dmitry Artamonow <[email protected]> Signed-off-by: Eric Miao <[email protected]>
2011-04-24Merge branch 'davem.r8169' of ↵David S. Miller1-28/+71
git://git.kernel.org/pub/scm/linux/kernel/git/romieu/netdev-2.6
2011-04-24NFSv4: Ensure that clientid and session establishment can time outTrond Myklebust2-6/+8
The following patch ensures that we do not get permanently trapped in the RPC layer when trying to establish a new client id or session. This again ensures that the state manager can finish in a timely fashion when the last filesystem to reference the nfs_client exits. Signed-off-by: Trond Myklebust <[email protected]>
2011-04-24SUNRPC: Allow RPC calls to return ETIMEDOUT instead of EIOTrond Myklebust2-2/+6
On occasion, it is useful for the NFS layer to distinguish between soft timeouts and other EIO errors due to (say) encoding errors, or authentication errors. The following patch ensures that the default behaviour of the RPC layer remains to return EIO on soft timeouts (until we have audited all the callers). Signed-off-by: Trond Myklebust <[email protected]>
2011-04-24NFSv4.1: Don't loop forever in nfs4_proc_create_sessionTrond Myklebust4-53/+40
If a server for some reason keeps sending NFS4ERR_DELAY errors, we can end up looping forever inside nfs4_proc_create_session, and so the usual mechanisms for detecting if the nfs_client is dead don't work. Fix this by ensuring that we loop inside the nfs4_state_manager thread instead. Signed-off-by: Trond Myklebust <[email protected]>
2011-04-24[SCSI] pmcraid: reject negative request sizeDan Rosenberg1-0/+3
There's a code path in pmcraid that can be reached via device ioctl that causes all sorts of ugliness, including heap corruption or triggering the OOM killer due to consecutive allocation of large numbers of pages. Not especially relevant from a security perspective, since users must have CAP_SYS_ADMIN to open the character device. First, the user can call pmcraid_chr_ioctl() with a type PMCRAID_PASSTHROUGH_IOCTL. A pmcraid_passthrough_ioctl_buffer is copied in, and the request_size variable is set to buffer->ioarcb.data_transfer_length, which is an arbitrary 32-bit signed value provided by the user. If a negative value is provided here, bad things can happen. For example, pmcraid_build_passthrough_ioadls() is called with this request_size, which immediately calls pmcraid_alloc_sglist() with a negative size. The resulting math on allocating a scatter list can result in an overflow in the kzalloc() call (if num_elem is 0, the sglist will be smaller than expected), or if num_elem is unexpectedly large the subsequent loop will call alloc_pages() repeatedly, a high number of pages will be allocated and the OOM killer might be invoked. Prevent this value from being negative in pmcraid_ioctl_passthrough(). Signed-off-by: Dan Rosenberg <[email protected]> Cc: [email protected] Cc: Anil Ravindranath <[email protected]> Signed-off-by: James Bottomley <[email protected]>
2011-04-24[SCSI] put stricter guards on queue dead checksJames Bottomley1-8/+8
SCSI uses request_queue->queuedata == NULL as a signal that the queue is dying. We set this state in the sdev release function. However, this allows a small window where we release the last reference but haven't quite got to this stage yet and so something will try to take a reference in scsi_request_fn and oops. It's very rare, but we had a report here, so we're pushing this as a bug fix The actual fix is to set request_queue->queuedata to NULL in scsi_remove_device() before we drop the reference. This causes correct automatic rejects from scsi_request_fn as people who hold additional references try to submit work and prevents anything from getting a new reference to the sdev that way. Cc: [email protected] Signed-off-by: James Bottomley <[email protected]>
2011-04-24[SCSI] scsi_dh: fix reference counting in scsi_dh_activate error pathMike Snitzer1-3/+6
Commit db422318cbca55168cf965f655471dbf8be82433 ([SCSI] scsi_dh: propagate SCSI device deletion) introduced a regression where the device reference is not dropped prior to scsi_dh_activate's early return from the error path. Signed-off-by: Mike Snitzer <[email protected]> Cc: [email protected] # 2.6.38 Reviewed-by: Mike Christie <[email protected]> Signed-off-by: James Bottomley <[email protected]>
2011-04-24[SCSI] mpt2sas: prevent heap overflows and unchecked readsDan Rosenberg1-2/+21
At two points in handling device ioctls via /dev/mpt2ctl, user-supplied length values are used to copy data from userspace into heap buffers without bounds checking, allowing controllable heap corruption and subsequently privilege escalation. Additionally, user-supplied values are used to determine the size of a copy_to_user() as well as the offset into the buffer to be read, with no bounds checking, allowing users to read arbitrary kernel memory. Signed-off-by: Dan Rosenberg <[email protected]> Cc: [email protected] Acked-by: Eric Moore <[email protected]> Signed-off-by: James Bottomley <[email protected]>
2011-04-24Merge branch 'dcache-cleanup'Linus Torvalds2-28/+18
* dcache-cleanup: vfs: get rid of insane dentry hashing rules
2011-04-24Merge branch 'upstream-linus' of ↵Linus Torvalds8-11/+103
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: ahci_start_engine compliant to AHCI spec ata: pata_at91.c bugfix for initial_timing initialisation ata: pata_at91.c bugfix for high master clock ahci: AHCI-mode SATA patch for Intel Panther Point DeviceIDs ata_piix: IDE-mode SATA patch for Intel Panther Point DeviceIDs libata: Pioneer DVR-216D can't do SETXFER ahci: don't enable port irq before handler is registered libata: Implement ATA_FLAG_NO_DIPM and apply it to mcp65 libata: Kill unused ATA_DFLAG_{H|D}IPM flags ahci: EM supported message type sysfs attribute
2011-04-24r8169: don't request firmware when there's no userspace.François Romieu1-28/+71
The firmware is cached during the first successfull call to open() and released once the network device is unregistered. The driver uses the cached firmware between open() and unregister_netdev(). So far the firmware is optional : a failure to load the firmware does not prevent open() to success. It is thus necessary to 1) unregister all 816x / 810[23] devices and 2) force a driver probe to issue a new firmware load. Signed-off-by: Francois Romieu <[email protected]> Fixed-by: Ciprian Docan <[email protected]> Cc: Realtek linux nic maintainers <[email protected]>
2011-04-24Merge branch 'for-linus' of git://git.infradead.org/ubifs-2.6Linus Torvalds2-8/+47
* 'for-linus' of git://git.infradead.org/ubifs-2.6: UBIFS: fix master node recovery UBIFS: fix false assertion warning in case of I/O failures UBIFS: fix false space checking failure
2011-04-24libata: ahci_start_engine compliant to AHCI specJian Peng1-0/+21
At the end of section 10.1 of AHCI spec (rev 1.3), it states Software shall not set PxCMD.ST to 1 until it is determined that a functoinal device is present on the port as determined by PxTFD.STS.BSY=0, PxTFD.STS.DRQ=0 and PxSSTS.DET=3h Even though most AHCI host controller works without this check, specific controller will fail under this condition. Signed-off-by: Jian Peng <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24ata: pata_at91.c bugfix for initial_timing initialisationIgor Plyatov1-2/+12
The "struct ata_timing" must contain 10 members, but ".dmack_hold" member was forgotten for "initial_timing" initialisation. This patch fixes such a problem. Signed-off-by: Igor Plyatov <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24ata: pata_at91.c bugfix for high master clockIgor Plyatov1-1/+7
The AT91SAM9 microcontrollers with master clock higher then 105 MHz and PIO0, have overflow of the NCS_RD_PULSE value in the MSB. This lead to "NCS_RD_PULSE" pulse longer then "NRD_CYCLE" pulse and driver does not detect ATA device. Signed-off-by: Igor Plyatov <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24ahci: AHCI-mode SATA patch for Intel Panther Point DeviceIDsSeth Heasley1-0/+6
The previously submitted patch was word-wrapped. This patch adds the AHCI-mode SATA DeviceIDs for the Intel Panther Point PCH. Signed-off-by: Seth Heasley <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24ata_piix: IDE-mode SATA patch for Intel Panther Point DeviceIDsSeth Heasley1-0/+8
The previously submitted patch was word-wrapped. This patch adds the IDE-mode SATA DeviceIDs for the Intel Panther Point PCH. Signed-off-by: Seth Heasley <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24libata: Pioneer DVR-216D can't do SETXFERJeff Mahoney1-0/+1
Commit 4a5610a04d415ed94af75bb1159d2621d62c8328 fixed an issue with the Pioneer DVR-212D not handling SETXFER correctly. An openSUSE user reported a similar issue with his DVR-216D that the NOSETXFER horkage worked around for him as well. This patch adds the DVR-216D (1.08) to the horkage list for NOSETXFER. The issue was reported at: https://bugzilla.novell.com/show_bug.cgi?id=679143 Reported-by: Volodymyr Kyrychenko <[email protected]> Signed-off-by: Jeff Mahoney <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24ahci: don't enable port irq before handler is registeredMaxime Bizon2-3/+16
The ahci_pmp_attach() & ahci_pmp_detach() unmask port irqs, but they are also called during port initialization, before ahci host irq handler is registered. On ce4100 platform, this sometimes triggers "irq 4: nobody cared" message when loading driver. Fixed this by not touching the register if the port is in frozen state, and mark all uninitialized port as frozen. Signed-off-by: Maxime Bizon <[email protected]> Acked-by: Tejun Heo <[email protected]> Cc: [email protected] Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24libata: Implement ATA_FLAG_NO_DIPM and apply it to mcp65Tejun Heo3-3/+6
NVIDIA mcp65 familiy of controllers cause command timeouts when DIPM is used. Implement ATA_FLAG_NO_DIPM and apply it. This problem was reported by Stefan Bader in the following thread. http://thread.gmane.org/gmane.linux.ide/48841 stable: applicable to 2.6.37 and 38. Signed-off-by: Tejun Heo <[email protected]> Reported-by: Stefan Bader <[email protected]> Cc: [email protected] Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24libata: Kill unused ATA_DFLAG_{H|D}IPM flagsTejun Heo1-2/+0
ATA_DFLAG_{H|D}IPM flags are no longer used. Kill them. Signed-off-by: Tejun Heo <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24ahci: EM supported message type sysfs attributeHannes Reinecke2-0/+26
This patch adds an sysfs attribute 'em_message_supported' to the ahci host device which prints out the supported enclosure management message types. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-04-24kconfig: Avoid buffer underrun in choice inputBen Hutchings1-1/+1
Commit 40aee729b350 ('kconfig: fix default value for choice input') fixed some cases where kconfig would select the wrong option from a choice with a single valid option and thus enter an infinite loop. However, this broke the test for user input of the form 'N?', because when kconfig selects the single valid option the input is zero-length and the test will read the byte before the input buffer. If this happens to contain '?' (as it will in a mips build on Debian unstable today) then kconfig again enters an infinite loop. Signed-off-by: Ben Hutchings <[email protected]> Cc: [email protected] [2.6.17+] Signed-off-by: Linus Torvalds <[email protected]>
2011-04-24vfs: get rid of insane dentry hashing rulesLinus Torvalds2-28/+18
The dentry hashing rules have been really quite complicated for a long while, in odd ways. That made functions like __d_drop() very fragile and non-obvious. In particular, whether a dentry was hashed or not was indicated with an explicit DCACHE_UNHASHED bit. That's despite the fact that the hash abstraction that the dentries use actually have a 'is this entry hashed or not' model (which is a simple test of the 'pprev' pointer). The reason that was done is because we used the normal 'is this entry unhashed' model to mark whether the dentry had _ever_ been hashed in the dentry hash tables, and that logic goes back many years (commit b3423415fbc2: "dcache: avoid RCU for never-hashed dentries"). That, in turn, meant that __d_drop had totally different unhashing logic for the dentry hash table case and for the anonymous dcache case, because in order to use the "is this dentry hashed" logic as a flag for whether it had ever been on the RCU hash table, we had to unhash such a dentry differently so that we'd never think that it wasn't 'unhashed' and wouldn't be free'd correctly. That's just insane. It made the logic really hard to follow, when there were two different kinds of "unhashed" states, and one of them (the one that used "list_bl_unhashed()") really had nothing at all to do with being unhashed per se, but with a very subtle lifetime rule instead. So turn all of it around, and make it logical. Instead of having a DENTRY_UNHASHED bit in d_flags to indicate whether the dentry is on the hash chains or not, use the hash chain unhashed logic for that. Suddenly "d_unhashed()" just uses "list_bl_unhashed()", and everything makes sense. And for the lifetime rule, just use an explicit DENTRY_RCUACCEES bit. If we ever insert the dentry into the dentry hash table so that it is visible to RCU lookup, we mark it DENTRY_RCUACCESS to show that it now needs the RCU lifetime rules. Now suddently that test at dentry free time makes sense too. And because unhashing now is sane and doesn't depend on where the dentry got unhashed from (because the dentry hash chain details doesn't have some subtle side effects), we can re-unify the __d_drop() logic and use common code for the unhashing. Also fix one more open-coded hash chain bit_spin_lock() that I missed in the previous chain locking cleanup commit. Signed-off-by: Linus Torvalds <[email protected]>
2011-04-23Merge branch 'pm-fixes' of ↵Linus Torvalds6-4/+34
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM: Add missing syscore_suspend() and syscore_resume() calls PM: Fix error code paths executed after failing syscore_suspend()
2011-04-23vfs: get rid of 'struct dcache_hash_bucket' abstractionLinus Torvalds1-24/+21
It's a useless abstraction for 'hlist_bl_head', and it doesn't actually help anything - quite the reverse. All the users end up having to know about the hlist_bl_head details anyway, using 'struct hlist_bl_node *' etc. So it just makes the code look confusing. And the cost of it is extra '&b->head' syntactic noise, but more importantly it spuriously makes the hash table dentry list look different from the per-superblock DCACHE_DISCONNECTED dentry list. As a result, the code ended up using ad-hoc locking for one case and special helper functions for what is really another totally identical case in the very same function. Make it all look and work the same. Signed-off-by: Linus Torvalds <[email protected]>
2011-04-23bnx2x: fix UDP csum offloadVladislav Zolotarov1-10/+24
Fixed packets parameters for FW in UDP checksum offload flow. Do not dereference TCP headers on non TCP frames. Reported-by: Eric Dumazet <[email protected]> Signed-off-by: Dmitry Kravkov <[email protected]> Signed-off-by: Eilon Greenstein <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-22Merge branch 'tty-linus' of ↵Linus Torvalds3-8/+11
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 * 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: tty/n_gsm: fix bug in CRC calculation for gsm1 mode serial/imx: read cts state only after acking cts change irq parport_pc.c: correctly release the requested region for the IT887x
2011-04-22SECURITY: Move exec_permission RCU checks into security modulesAndi Kleen5-8/+14
Right now all RCU walks fall back to reference walk when CONFIG_SECURITY is enabled, even though just the standard capability module is active. This is because security_inode_exec_permission unconditionally fails RCU walks. Move this decision to the low level security module. This requires passing the RCU flags down the security hook. This way at least the capability module and a few easy cases in selinux/smack work with RCU walks with CONFIG_SECURITY=y Signed-off-by: Andi Kleen <[email protected]> Acked-by: Eric Paris <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-04-22Merge branch 'for-linus' of ↵Linus Torvalds15-40/+110
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: hda - Fix unused warnings when !SND_HDA_NEEDS_RESUME ALSA: hda - Add a fix-up for Acer dmic with ALC271x codec ASoC: add a module alias to the FSI driver ALSA: emu10k1 - Fix "Music" controls to "Synth" controls in documents ARM: s3c2440: gta02; Register dfbmcs320 device for BT audio interface ASoC: codecs: JZ4740: Fix OOPS ASoC: Fix output PGA enabling in wm_hubs CODECs ASoC: sn95031: decorate function with __devexit_p() ASoC: SAMSUNG: Fix the inverted clocks handling for pcm driver ASoC: sst_platform: Fix lock acquring ASoC: fsi: driver safely remove for against irq ASoC: fsi: modify vague PM control on probe ASoC: fsi: take care in failing case of dai register MAINTAINERS: Update Samsung ASoC maintainer's id ASoC: WM8903: HP and Line out PGA/mixer DAPM fixes ASoC: Set left channel volume update bits for WM8994 ASoC: fix config error path ASoC: check channel mismatch between cpu_dai and codec_dai ASoC: Tegra: Suspend/resume support
2011-04-22netconsole: fix deadlock when removing net driver that netconsole is using (v2)Neil Horman1-0/+8
A deadlock was reported to me recently that occured when netconsole was being used in a virtual guest. If the virtio_net driver was removed while netconsole was setup to use an interface that was driven by that driver, the guest deadlocked. No backtrace was provided because netconsole was the only console configured, but it became clear pretty quickly what the problem was. In netconsole_netdev_event, if we get an unregister event, we call __netpoll_cleanup with the target_list_lock held and irqs disabled. __netpoll_cleanup can, if pending netpoll packets are waiting call cancel_delayed_work_sync, which is a sleeping path. the might_sleep call in that path gets triggered, causing a console warning to be issued. The netconsole write handler of course tries to take the target_list_lock again, which we already hold, causing deadlock. The fix is pretty striaghtforward. Simply drop the target_list_lock and re-enable irqs prior to calling __netpoll_cleanup, the re-acquire the lock, and restart the loop. Confirmed by myself to fix the problem reported. Signed-off-by: Neil Horman <[email protected]> CC: "David S. Miller" <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-22[PARISC] slub: fix panic with DISCONTIGMEMJames Bottomley1-0/+1
Slub makes assumptions about page_to_nid() which are violated by DISCONTIGMEM and !NUMA. This violation results in a panic because page_to_nid() can be non-zero for pages in the discontiguous ranges and this leads to a null return by get_node(). The assertion by the maintainer is that DISCONTIGMEM should only be allowed when NUMA is also defined. However, at least six architectures: alpha, ia64, m32r, m68k, mips, parisc violate this. The panic is a regression against slab, so just mark slub broken in the problem configuration to prevent users reporting these panics. Cc: [email protected] Acked-by: David Rientjes <[email protected]> Acked-by: Pekka Enberg <[email protected]> Signed-off-by: James Bottomley <[email protected]>
2011-04-22Merge branch 'master' of ↵David S. Miller10-20/+32
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2011-04-22Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds3-6/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, x86: Update/fix Intel Nehalem cache events perf, x86: P4 PMU - Don't forget to clear cpuc->active_mask on overflow x86, perf event: Turn off unstructured raw event access to offcore registers perf: Support Xeon E7's via the Westmere PMU driver
2011-04-22Merge branch 'irq-fixes-for-linus' of ↵Linus Torvalds1-12/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: xtensa: Fixup irq conversion fallout and nmi_count
2011-04-22perf, x86: Update/fix Intel Nehalem cache eventsPeter Zijlstra1-4/+4
Change the Nehalem cache events to use retired memory instruction counters (similar to Westmere), this greatly improves the provided stats. Using: main () { int i; for (i = 0; i < 1000000000; i++) { asm("mov (%%rsp), %%rbx;" "mov %%rbx, (%%rsp);" : : : "rbx"); } } We find: $ perf stat --repeat 10 -e instructions:u -e l1-dcache-loads:u -e l1-dcache-stores:u ./loop_1b_loads+stores Performance counter stats for './loop_1b_loads+stores' (10 runs): 4,000,081,056 instructions:u # 0.000 IPC ( +- 0.000% ) 4,999,502,846 l1-dcache-loads:u ( +- 0.008% ) 1,000,034,832 l1-dcache-stores:u ( +- 0.000% ) 1.565184942 seconds time elapsed ( +- 0.005% ) The 5b is surprising - we'd expect 1b: $ perf stat --repeat 10 -e instructions:u -e r10b:u -e l1-dcache-stores:u ./loop_1b_loads+stores Performance counter stats for './loop_1b_loads+stores' (10 runs): 4,000,081,054 instructions:u # 0.000 IPC ( +- 0.000% ) 1,000,021,961 r10b:u ( +- 0.000% ) 1,000,030,951 l1-dcache-stores:u ( +- 0.000% ) 1.565055422 seconds time elapsed ( +- 0.003% ) Which this patch thus fixes. Signed-off-by: Peter Zijlstra <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Lin Ming <[email protected]> Cc: Cyrill Gorcunov <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2011-04-22perf, x86: P4 PMU - Don't forget to clear cpuc->active_mask on overflowCyrill Gorcunov1-1/+1
It's not enough to simply disable event on overflow the cpuc->active_mask should be cleared as well otherwise counter may stall in "active" even in real being already disabled (which potentially may lead to the situation that user may not use this counter further). Don pointed out that: " I also noticed this patch fixed some unknown NMIs on a P4 when I stressed the box". Tested-by: Lin Ming <[email protected]> Signed-off-by: Cyrill Gorcunov <[email protected]> Acked-by: Don Zickus <[email protected]> Signed-off-by: Don Zickus <[email protected]> Cc: Cyrill Gorcunov <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.