- 04 Mar, 2011 3 commits
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Darren Hart authored
Perform the test for SCHED_IDLE before testing for SCHED_BATCH (and ensure idle tasks don't preempt idle tasks) so the non-interactive, but still important, SCHED_BATCH tasks will run in favor of the very low priority SCHED_IDLE tasks. Signed-off-by:
Darren Hart <dvhart@linux.intel.com> Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by:
Mike Galbraith <efault@gmx.de> Cc: Richard Purdie <richard.purdie@linuxfoundation.org> LKML-Reference: <1298408674-3130-2-git-send-email-dvhart@linux.intel.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
Merge reason: Add fixes before applying dependent patches. Signed-off-by: -
Balbir Singh authored
The current sched rt code is broken when it comes to hierarchical scheduling, this patch fixes two problems 1. It adds redundant enqueuing (harmless) when it finds a queue has tasks enqueued, but it has no run time and it is not throttled. 2. The most important change is in sched_rt_rq_enqueue/dequeue. The code just picks the rt_rq belonging to the current cpu on which the period timer runs, the patch fixes it, so that the correct rt_se is enqueued/dequeued. Tested with a simple hierarchy /c/d, c and d assigned similar runtimes of 50,000 and a while 1 loop runs within "d". Both c and d get throttled, without the patch, the task just stops running and never runs (depends on where the sched_rt b/w timer runs). With the patch, the task is throttled and runs as expected. [ bharata, suggestions on how to pick the rt_se belong to the rt_rq and correct cpu ] Signed-off-by:
Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by:
Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by:
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- 03 Mar, 2011 29 commits
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Linus Torvalds authored
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: DNS: Fix a NULL pointer deref when trying to read an error key [CVE-2011-1076]
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) MAINTAINERS: Add Andy Gospodarek as co-maintainer. r8169: disable ASPM RxRPC: Fix v1 keys AF_RXRPC: Handle receiving ACKALL packets cnic: Fix lost interrupt on bnx2x cnic: Prevent status block race conditions with hardware net: dcbnl: check correct ops in dcbnl_ieee_set() e1000e: disable broken PHY wakeup for ICH10 LOMs, use MAC wakeup instead igb: fix sparse warning e1000: fix sparse warning netfilter: nf_log: avoid oops in (un)bind with invalid nfproto values dccp: fix oops on Reset after close ipvs: fix dst_lock locking on dest update davinci_emac: Add Carrier Link OK check in Davinci RX Handler bnx2x: update driver version to 1.62.00-6 bnx2x: properly calculate lro_mss bnx2x: perform statistics "action" before state transition. bnx2x: properly configure coefficients for MinBW algorithm (NPAR mode). bnx2x: Fix ethtool -t link test for MF (non-pmf) devices. bnx2x: Fix nvram test for single port devices. ...
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: kill loop_mutex blktrace: Remove blk_fill_rwbs_rq. block: blk-flush shouldn't call directly into q->request_fn() __blk_run_queue() block: add @force_kblockd to __blk_run_queue() block: fix kernel-doc format for blkdev_issue_zeroout blk-throttle: Do not use kblockd workqueue for throtl work
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6Linus Torvalds authored
* 'i_nlink' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: hfs: fix rename() over non-empty directory udf: fix i_nlink limit fix reiserfs mkdir() breakage exofs: i_nlink races in rename() nilfs2: i_nlink races in rename() minix: i_nlink races in rename() ufs: i_nlink races in rename() sysv: i_nlink races in rename()
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David Howells authored
When a DNS resolver key is instantiated with an error indication, attempts to read that key will result in an oops because user_read() is expecting there to be a payload - and there isn't one [CVE-2011-1076]. Give the DNS resolver key its own read handler that returns the error cached in key->type_data.x[0] as an error rather than crashing. Also make the kenter() at the beginning of dns_resolver_instantiate() limit the amount of data it prints, since the data is not necessarily NUL-terminated. The buggy code was added in: commit 4a2d7892 Author: Wang Lei <wang840925@gmail.com> Date: Wed Aug 11 09:37:58 2010 +0100 Subject: DNS: If the DNS server returns an error, allow that to be cached [ver #2] This can trivially be reproduced by any user with the following program compiled with -lkeyutils: #include <stdlib.h> #include <keyutils.h> #include <err.h> static char payload[] = "#dnserror=6"; int main() { key_serial_t key; key = add_key("dns_resolver", "a", payload, sizeof(payload), KEY_SPEC_SESSION_KEYRING); if (key == -1) err(1, "add_key"); if (keyctl_read(key, NULL, 0) == -1) err(1, "read_key"); return 0; } What should happen is that keyctl_read() reports error 6 (ENXIO) to the user: dns-break: read_key: No such device or address but instead the kernel oopses. This cannot be reproduced with the 'keyutils add' or 'keyutils padd' commands as both of those cut the data down below the NUL termination that must be included in the data. Without this dns_resolver_instantiate() will return -EINVAL and the key will not be instantiated such that it can be read. The oops looks like: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: [<ffffffff811b99f7>] user_read+0x4f/0x8f PGD 3bdf8067 PUD 385b9067 PMD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:19.0/irq CPU 0 Modules linked in: Pid: 2150, comm: dns-break Not tainted 2.6.38-rc7-cachefs+ #468 /DG965RY RIP: 0010:[<ffffffff811b99f7>] [<ffffffff811b99f7>] user_read+0x4f/0x8f RSP: 0018:ffff88003bf47f08 EFLAGS: 00010246 RAX: 0000000000000001 RBX: ffff88003b5ea378 RCX: ffffffff81972368 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88003b5ea378 RBP: ffff88003bf47f28 R08: ffff88003be56620 R09: 0000000000000000 R10: 0000000000000395 R11: 0000000000000002 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffffffffa1 FS: 00007feab5751700(0000) GS:ffff88003e000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 000000003de40000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process dns-break (pid: 2150, threadinfo ffff88003bf46000, task ffff88003be56090) Stack: ffff88003b5ea378 ffff88003b5ea3a0 0000000000000000 0000000000000000 ffff88003bf47f68 ffffffff811b708e ffff88003c442bc8 0000000000000000 00000000004005a0 00007fffba368060 0000000000000000 0000000000000000 Call Trace: [<ffffffff811b708e>] keyctl_read_key+0xac/0xcf [<ffffffff811b7c07>] sys_keyctl+0x75/0xb6 [<ffffffff81001f7b>] system_call_fastpath+0x16/0x1b Code: 75 1f 48 83 7b 28 00 75 18 c6 05 58 2b fb 00 01 be bb 00 00 00 48 c7 c7 76 1c 75 81 e8 13 c2 e9 ff 4c 8b b3 e0 00 00 00 4d 85 ed <41> 0f b7 5e 10 74 2d 4d 85 e4 74 28 e8 98 79 ee ff 49 39 dd 48 RIP [<ffffffff811b99f7>] user_read+0x4f/0x8f RSP <ffff88003bf47f08> CR2: 0000000000000010 Signed-off-by:
David Howells <dhowells@redhat.com> Acked-by:
Jeff Layton <jlayton@redhat.com> cc: Wang Lei <wang840925@gmail.com> Signed-off-by:
James Morris <jmorris@namei.org>
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Jay Vosburgh authored
Acked-by:
Andy Gospodarek <andy@greyhouse.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://oss.sgi.com/xfs/xfsLinus Torvalds authored
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: zero proper structure size for geometry calls
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git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: fix regression that i-flag is not set on changeless checkpoints
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Stanislaw Gruszka authored
For some time is known that ASPM is causing troubles on r8169, i.e. make device randomly stop working without any errors in dmesg. Currently Tomi Leppikangas reports that system with r8169 device hangs with MCE errors when ASPM is enabled: https://bugzilla.redhat.com/show_bug.cgi?id=642861#c4 Lets disable ASPM for r8169 devices at all, to avoid problems with r8169 PCIe devices at least for some users. Reported-by:
Tomi Leppikangas <tomi.leppikangas@gmail.com> Cc: stable@kernel.org Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by:
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Petr Uzel authored
Following steps lead to deadlock in kernel: dd if=/dev/zero of=img bs=512 count=1000 losetup -f img mkfs.ext2 /dev/loop0 mount -t ext2 -o loop /dev/loop0 mnt umount mnt/ Stacktrace: [<c102ec04>] irq_exit+0x36/0x59 [<c101502c>] smp_apic_timer_interrupt+0x6b/0x75 [<c127f639>] apic_timer_interrupt+0x31/0x38 [<c101df88>] mutex_spin_on_owner+0x54/0x5b [<fe2250e9>] lo_release+0x12/0x67 [loop] [<c10c4eae>] __blkdev_put+0x7c/0x10c [<c10a4da5>] fput+0xd5/0x1aa [<fe2250cf>] loop_clr_fd+0x1a9/0x1b1 [loop] [<fe225110>] lo_release+0x39/0x67 [loop] [<c10c4eae>] __blkdev_put+0x7c/0x10c [<c10a59d9>] deactivate_locked_super+0x17/0x36 [<c10b6f37>] sys_umount+0x27e/0x2a5 [<c10b6f69>] sys_oldumount+0xb/0xe [<c1002897>] sysenter_do_call+0x12/0x26 [<ffffffff>] 0xffffffff Regression since 2a48fc0a, which introduced the private loop_mutex as part of the BKL removal process. As per [1], the mutex can be safely removed. [1] http://www.gossamer-threads.com/lists/linux/kernel/1341930 Addresses: https://bugzilla.novell.com/show_bug.cgi?id=669394 Addresses: https://bugzilla.kernel.org/show_bug.cgi?id=29172Signed-off-by:
Petr Uzel <petr.uzel@suse.cz> Cc: stable@kernel.org Reviewed-by:
Nikanth Karthikesan <knikanth@suse.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Jens Axboe <jaxboe@fusionio.com>
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Tao Ma authored
If we enable trace events to trace block actions, We use blk_fill_rwbs_rq to analyze the corresponding actions in request's cmd_flags, but we only choose the minor 2 bits from it, so most of other flags(e.g, REQ_SYNC) are missing. For example, with a sync write we get: write_test-2409 [001] 160.013869: block_rq_insert: 3,64 W 0 () 258135 + = 8 [write_test] Since now we have integrated the flags of both bio and request, it is safe to pass rq->cmd_flags directly to blk_fill_rwbs and blk_fill_rwbs_rq isn't needed any more. With this patch, after a sync write we get: write_test-2417 [000] 226.603878: block_rq_insert: 3,64 WS 0 () 258135 += 8 [write_test] Signed-off-by:
Tao Ma <boyu.mt@taobao.com> Acked-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
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Al Viro authored
merge hfs_unlink() and hfs_rmdir(), while we are at it. Signed-off-by:Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
(256 << sizeof(x)) - 1 is not the maximal possible value of x... In reality, the maximal allowed value for UDF FileLinkCount is 65535. Signed-off-by: -
Al Viro authored
if directory has so many subdirectories that its link count is set to 1 (i.e. "can't tell accurately") and reiserfs_new_inode() fails, we shouldn't decrement the parent's link count in cleanup path; that's what DEC_DIR_INODE_NLINK() is for. As it is, we end up with parent suddenly getting zero i_nlink, with very unpleasant effects. Signed-off-by: -
Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Anton Blanchard authored
commit 33941284 (RxRPC: Allow key payloads to be passed in XDR form) broke klog for me. I notice the v1 key struct had a kif_version field added: -struct rxkad_key { - u16 security_index; /* RxRPC header security index */ - u16 ticket_len; /* length of ticket[] */ - u32 expiry; /* time at which expires */ - u32 kvno; /* key version number */ - u8 session_key[8]; /* DES session key */ - u8 ticket[0]; /* the encrypted ticket */ -}; +struct rxrpc_key_data_v1 { + u32 kif_version; /* 1 */ + u16 security_index; + u16 ticket_length; + u32 expiry; /* time_t */ + u32 kvno; + u8 session_key[8]; + u8 ticket[0]; +}; However the code in rxrpc_instantiate strips it away: data += sizeof(kver); datalen -= sizeof(kver); Removing kif_version fixes my problem. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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David Howells authored
The OpenAFS server is now sending ACKALL packets, so we need to handle them. Otherwise we report a protocol error and abort. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6Linus Torvalds authored
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/i915: fix memory corruption with GM965 and >4GB RAM
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git://git.secretlab.ca/git/linux-2.6Linus Torvalds authored
* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6: of/promtree: allow DT device matching by fixing 'name' brokenness (v5) x86: OLPC: have prom_early_alloc BUG rather than return NULL of/flattree: Drop an uninteresting message to pr_debug level of: Add missing of_address.h to xilinx ehci driver
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git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6: alpha: Enable GENERIC_HARDIRQS_NO_DEPRECATED alpha: irq: Convert affinity to use irq_data alpha: irq: Remove pointless irq status manipulation alpha: titan: Convert irq_chip functions alpha: takara: Convert irq_chip functions alpha: sable: Convert irq_chip functions alpha: rx164: Convert irq_chip functions alpha: noritake: Convert irq_chip functions alpha: rawhide: Convert irq_chip functions alpha: mikasa: Convert irq_chip functions alpha: marvel: Convert irq_chip functions alpha: eiger: Convert irq_chip functions alpha: eb64p: Convert irq_chip functions alpha: dp264: Convert irq_chip functions alpha: cabriolet: Convert irq_chip functions alpha: i8259, alcor, jensen wildfire: Convert irq_chip alpha: srm: Convert irq_chip functions alpha: Pyxis convert irq_chip functions Fix typo in call to irq_to_desc()
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: Avoid tps6586x burst writes mfd: Don't suspend WM8994 if the CODEC is not suspended mfd: Fix DaVinci voice codec device name mfd: Fix NULL pointer due to non-initialized ucb1x00-ts absinfo mfd: Fix ASIC3 build with GENERIC_HARDIRQS_NO_DEPRECATED
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6Linus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: ext2: Fix link count corruption under heavy link+rename load
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git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds authored
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] p4-clockmod: print EST-capable warning message only once [CPUFREQ] fix BUG on cpufreq policy init failure [CPUFREQ] Fix another notifier leak in powernow-k8. [CPUFREQ] Missing "unregister_cpu_notifier" in powernow-k8.c
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix call to flush_ptrace_hw_breakpoint() powerpc/kexec: Restore ppc_md.machine_kexec powerpc/mm: Make hpte_need_flush() safe for preemption
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6Linus Torvalds authored
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: intel_idle: disable Atom/Lincroft HW C-state auto-demotion intel_idle: disable NHM/WSM HW C-state auto-demotion
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- 02 Mar, 2011 8 commits
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Michael Chan authored
We service 2 queues (kcq1 and kcq2) in cnic_service_bnx2x_bh(). If the status block index has changed when servicing the kcq2, we must go back and check kcq1. The latest status block index will be used to acknowledge the interrupt, and without looping back to check kcq1, we may miss events on kcq1. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
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Michael Chan authored
The status block index is used to acknowledge interrupt events and must be read before checking for the interrupt events, so we need to add rmb() to guarantee that. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI / ACPICA: Implicit notify for multiple devices ACPI / debugfs: Fix buffer overflows, double free
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David S. Miller authored
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John Fastabend authored
The incorrect ops routine was being tested for in DCB_ATTR_IEEE_PFC attributes. This patch corrects it. Currently, every driver implementing ieee_setets also implements ieee_setpfc so this bug is not actualized yet. Signed-off-by:
John Fastabend <john.r.fastabend@intel.com> Signed-off-by:
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Andres Salomon authored
Commit e2f2a93b, "of/promtree: add package-to-path support to pdt" changed dp->name from using the 'name' property to using package-to-path. This fixed /proc/device-tree creation by eliminating conflicts between names (the 'name' property provides names like 'battery', whereas package-to-path provides names like '/foo/bar/battery@0', which we stripped to 'battery@0'). However, it also breaks of_device_id table matching. The fix that we _really_ wanted was to keep dp->name based upon the name property ('battery'), but based dp->full_name upon package-to-path ('battery@0'). This patch does just that. This changes all users (except SPARC) of promtree to use the full result from package-to-path for full_name, rather than stripping the directory out. In practice, the strings end up being exactly the same; this change saves time, code, and memory. SPARC continues to use the existing build_path_component() code. v2: combine two patches and revert of_pdt_node_name to original version v3: use dp->phandle instead of passing around node v4: warn/bail out for non-sparc archs if pkg2path is not set v5: split of_pdt_build_full_name into sparc & non-sparc versions v6: Pass NULL to pkg2path before buf gets assigned. Drop check for pkg2path hook on each and every node. v7: Don't BUG() when unable to get the full_path; create a known-unique name instead. Signed-off-by:
Andres Salomon <dilinger@queued.net> Signed-off-by:
Grant Likely <grant.likely@secretlab.ca>
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Andres Salomon authored
..similar to what sparc's prom_early_alloc does. Signed-off-by:
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Paul Bolle authored
This message looks like an error (which it isn't) when booting with a flattened device tree. Remove the message from normal kernel builds. Signed-off-by:
Paul Bolle <pebolle@tiscali.nl> Signed-off-by:
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