- 30 7月, 2010 2 次提交
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由 David Howells 提交于
Fix __task_cred()'s lockdep check by removing the following validation condition: lockdep_tasklist_lock_is_held() as commit_creds() does not take the tasklist_lock, and nor do most of the functions that call it, so this check is pointless and it can prevent detection of the RCU lock not being held if the tasklist_lock is held. Instead, add the following validation condition: task->exit_state >= 0 to permit the access if the target task is dead and therefore unable to change its own credentials. Fix __task_cred()'s comment to: (1) discard the bit that says that the caller must prevent the target task from being deleted. That shouldn't need saying. (2) Add a comment indicating the result of __task_cred() should not be passed directly to get_cred(), but rather than get_task_cred() should be used instead. Also put a note into the documentation to enforce this point there too. Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
It's possible for get_task_cred() as it currently stands to 'corrupt' a set of credentials by incrementing their usage count after their replacement by the task being accessed. What happens is that get_task_cred() can race with commit_creds(): TASK_1 TASK_2 RCU_CLEANER -->get_task_cred(TASK_2) rcu_read_lock() __cred = __task_cred(TASK_2) -->commit_creds() old_cred = TASK_2->real_cred TASK_2->real_cred = ... put_cred(old_cred) call_rcu(old_cred) [__cred->usage == 0] get_cred(__cred) [__cred->usage == 1] rcu_read_unlock() -->put_cred_rcu() [__cred->usage == 1] panic() However, since a tasks credentials are generally not changed very often, we can reasonably make use of a loop involving reading the creds pointer and using atomic_inc_not_zero() to attempt to increment it if it hasn't already hit zero. If successful, we can safely return the credentials in the knowledge that, even if the task we're accessing has released them, they haven't gone to the RCU cleanup code. We then change task_state() in procfs to use get_task_cred() rather than calling get_cred() on the result of __task_cred(), as that suffers from the same problem. Without this change, a BUG_ON in __put_cred() or in put_cred_rcu() can be tripped when it is noticed that the usage count is not zero as it ought to be, for example: kernel BUG at kernel/cred.c:168! invalid opcode: 0000 [#1] SMP last sysfs file: /sys/kernel/mm/ksm/run CPU 0 Pid: 2436, comm: master Not tainted 2.6.33.3-85.fc13.x86_64 #1 0HR330/OptiPlex 745 RIP: 0010:[<ffffffff81069881>] [<ffffffff81069881>] __put_cred+0xc/0x45 RSP: 0018:ffff88019e7e9eb8 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff880161514480 RCX: 00000000ffffffff RDX: 00000000ffffffff RSI: ffff880140c690c0 RDI: ffff880140c690c0 RBP: ffff88019e7e9eb8 R08: 00000000000000d0 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000040 R12: ffff880140c690c0 R13: ffff88019e77aea0 R14: 00007fff336b0a5c R15: 0000000000000001 FS: 00007f12f50d97c0(0000) GS:ffff880007400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f461bc000 CR3: 00000001b26ce000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process master (pid: 2436, threadinfo ffff88019e7e8000, task ffff88019e77aea0) Stack: ffff88019e7e9ec8 ffffffff810698cd ffff88019e7e9ef8 ffffffff81069b45 <0> ffff880161514180 ffff880161514480 ffff880161514180 0000000000000000 <0> ffff88019e7e9f28 ffffffff8106aace 0000000000000001 0000000000000246 Call Trace: [<ffffffff810698cd>] put_cred+0x13/0x15 [<ffffffff81069b45>] commit_creds+0x16b/0x175 [<ffffffff8106aace>] set_current_groups+0x47/0x4e [<ffffffff8106ac89>] sys_setgroups+0xf6/0x105 [<ffffffff81009b02>] system_call_fastpath+0x16/0x1b Code: 48 8d 71 ff e8 7e 4e 15 00 85 c0 78 0b 8b 75 ec 48 89 df e8 ef 4a 15 00 48 83 c4 18 5b c9 c3 55 8b 07 8b 07 48 89 e5 85 c0 74 04 <0f> 0b eb fe 65 48 8b 04 25 00 cc 00 00 48 3b b8 58 04 00 00 75 RIP [<ffffffff81069881>] __put_cred+0xc/0x45 RSP <ffff88019e7e9eb8> ---[ end trace df391256a100ebdd ]--- Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NJiri Olsa <jolsa@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 29 7月, 2010 7 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb由 Linus Torvalds 提交于
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: x86,kgdb: Fix hw breakpoint regression
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] ibmvscsi: Fix oops when an interrupt is pending during probe [SCSI] zfcp: Update status read mempool [SCSI] zfcp: Do not wait for SBALs on stopped queue [SCSI] zfcp: Fix check whether unchained ct_els is possible [SCSI] ipr: fix resource path display and formatting
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git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: davinci: da850/omap-l138 evm: account for DEFDCDC{2,3} being tied high regulator: tps6507x: allow driver to use DEFDCDC{2,3}_HIGH register wm8350-regulator: fix wm8350_register_regulator error handling ab3100: fix off-by-one value range checking for voltage selector
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由 Andre Osterhues 提交于
The function ecryptfs_uid_hash wrongly assumes that the second parameter to hash_long() is the number of hash buckets instead of the number of hash bits. This patch fixes that and renames the variable ecryptfs_hash_buckets to ecryptfs_hash_bits to make it clearer. Fixes: CVE-2010-2492 Signed-off-by: NAndre Osterhues <aosterhues@escrypt.com> Signed-off-by: NTyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jason Wessel 提交于
HW breakpoints events stopped working correctly with kgdb as a result of commit: 018cbffe (Merge commit 'v2.6.33' into perf/core). The regression occurred because the behavior changed for setting NOTIFY_STOP as the return value to the die notifier if the breakpoint was known to the HW breakpoint API. Because kgdb is using the HW breakpoint API to register HW breakpoints slots, it must also now implement the overflow_handler call back else kgdb does not get to see the events from the die notifier. The kgdb_ll_trap function will be changed to be general purpose code which can allow an easy way to implement the hw_breakpoint API overflow call back. Signed-off-by: NJason Wessel <jason.wessel@windriver.com> Acked-by: NDongdong Deng <dongdong.deng@windriver.com> Acked-by: NFrederic Weisbecker <fweisbec@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: use complete_all and wake_up_all ceph: Correct obvious typo of Kconfig variable "CRYPTO_AES" ceph: fix dentry lease release ceph: fix leak of dentry in ceph_init_dentry() error path ceph: fix pg_mapping leak on pg_temp updates ceph: fix d_release dop for snapdir, snapped dentries ceph: avoid dcache readdir for snapdir
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由 Steven Whitehouse 提交于
If we don't need a huge amount of memory in ->readdir() then we can use kmalloc rather than vmalloc to allocate it. This should cut down on the greater overheads associated with vmalloc for smaller directories. We may be able to eliminate vmalloc entirely at some stage, but this is easy to do right away. Also using GFP_NOFS to avoid any issues wrt to deleting inodes while under a glock, and suggestion from Linus to factor out the alloc/dealloc. I've given this a test with a variety of different sized directories and it seems to work ok. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Piggin <npiggin@suse.de> Cc: Prarit Bhargava <prarit@redhat.com> Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 28 7月, 2010 13 次提交
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由 Sekhar Nori 提交于
Per the da850/omap-l138 Beta EVM SOM schematic, the DEFDCDC2 and DEFDCDC3 lines are tied high. This leads to a 3.3V IO and 1.2V CVDD voltage. Pass the right platform data to the TPS6507x driver so it can operate on the DEFDCDC{2,3}_HIGH register to read and change voltage levels. Signed-off-by: NSekhar Nori <nsekhar@ti.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Anuj Aggarwal 提交于
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> In TPS6507x, depending on the status of DEFDCDC{2,3} pin either DEFDCDC{2,3}_LOW or DEFDCDC{2,3}_HIGH register needs to be read or programmed to change the output voltage. The current driver assumes DEFDCDC{2,3} pins are always tied low and thus operates only on DEFDCDC{2,3}_LOW register. This need not always be the case (as is found on OMAP-L138 EVM). Unfortunately, software cannot read the status of DEFDCDC{2,3} pins. So, this information is passed through platform data depending on how the board is wired. Signed-off-by: NAnuj Aggarwal <anuj.aggarwal@ti.com> Signed-off-by: NSekhar Nori <nsekhar@ti.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: Pass the correct end of buffer to p9stat_read
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由 Jon Povey 提交于
When freeing a gpio that has not been exported, gpio_unexport() prints a debug message when it should just fall through silently. Example spurious message: gpio_unexport: gpio0 status -22 Signed-off-by: NJon Povey <jon.povey@racelogic.co.uk> Cc: David Brownell <david-b@pacbell.net> Acked-by: NUwe Kleine-K?nig <u.kleine-koenig@pengutronix.de> Cc: Gregory Bean <gbean@codeaurora.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Anton Vorontsov 提交于
The MPC85xx EDAC driver is missing module device aliases, so the driver won't load automatically on boot. This patch fixes the issue by adding proper MODULE_DEVICE_TABLE() macros. Signed-off-by: NAnton Vorontsov <avorontsov@mvista.com> Cc: Doug Thompson <dougthompson@xmission.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Dave Jiang <djiang@mvista.com> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Rudolf Marek 提交于
Fix the logic while writing new date/time to the chip. The driver incorrectly wrote back register values to different registers and even with wrong mask. The patch adds clearing of the VLF register, which should be cleared if all date/time values are set. Signed-off-by: NRudolf Marek <rudolf.marek@sysgo.com> Acked-by: NWan ZongShun <mcuos.com@gmail.com> Cc: Martyn Welch <martyn.welch@gefanuc.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jason Baron 提交于
The command echo "file ec.c +p" >/sys/kernel/debug/dynamic_debug/control causes an oops. Move the call to ddebug_remove_module() down into free_module(). In this way it should be called from all error paths. Currently, we are missing the remove if the module init routine fails. Signed-off-by: NJason Baron <jbaron@redhat.com> Reported-by: NThomas Renninger <trenn@suse.de> Tested-by: NThomas Renninger <trenn@suse.de> Cc: <stable@kernel.org> [2.6.32+] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Yehuda Sadeh 提交于
This fixes an issue triggered by running concurrent syncs. One of the syncs would go through while the other would just hang indefinitely. In any case, we never actually want to wake a single waiter, so the *_all functions should be used. Signed-off-by: NYehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: NSage Weil <sage@newdream.net>
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由 Latchesar Ionkov 提交于
Pass the correct end of the buffer to p9stat_read. Signed-off-by: NLatchesar Ionkov <lucho@ionkov.net> Signed-off-by: NEric Van Hensbergen <ericvh@gmail.com>
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由 Anton Blanchard 提交于
A driver needs to be ready to take an interrupt as soon as it registers an interrupt handler. I noticed the following oops when testing kdump: ipr: IBM Power RAID SCSI Device Driver version: 2.5.0 (February 11, 2010) ibmvscsi 30000002: SRP_VERSION: 16.a ibmvscsi 30000002: SRP_VERSION: 16.a Unable to handle kernel paging request for data at address 0x00000000 ... pc: c000000004085e34: .tasklet_action+0xf4/0x1dc ... c000000004086fe4 .__do_softirq+0x16c/0x2c0 c00000000403138c .call_do_softirq+0x14/0x24 c00000000400ee14 .do_softirq+0xa0/0x104 c00000000408690c .irq_exit+0x70/0xd0 c00000000400f190 .do_IRQ+0x214/0x2a8 c000000004004804 hardware_interrupt_entry+0x1c/0x98 --- Exception: 501 (Hardware Interrupt) at c00000000400c544 .raw_local_irq_restore+0x48/0x54 c00000000465d2a8 ._raw_spin_unlock_irqrestore+0x74/0xa0 c0000000040e7f00 .__setup_irq+0x2ec/0x3f0 c0000000040e8198 .request_threaded_irq+0x194/0x22c c00000000446d854 .rpavscsi_init_crq_queue+0x284/0x3f0 c00000000446c764 .ibmvscsi_probe+0x688/0x710 c00000000402903c .vio_bus_probe+0x37c/0x3e4 c000000004403f10 .driver_probe_device+0xec/0x1b8 c000000004404088 .__driver_attach+0xac/0xf4 c000000004403184 .bus_for_each_dev+0x98/0x104 c000000004403c98 .driver_attach+0x40/0x60 c0000000044026f0 .bus_add_driver+0x154/0x324 c0000000044045d0 .driver_register+0xe8/0x1ac c00000000402b2a8 .vio_register_driver+0x54/0x74 c000000004933ea4 .ibmvscsi_module_init+0x80/0xc0 c000000004009834 .do_one_initcall+0x98/0x1d8 c0000000049005b4 .kernel_init+0x27c/0x33c c000000004031550 .kernel_thread+0x54/0x70 srp_task needs to be setup before request_irq. The patch below fixes the oops. Signed-off-by: NAnton Blanchard <anton@samba.org> Acked-by: NBrian King <brking@linux.vnet.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/perf由 Linus Torvalds 提交于
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/perf: perf, powerpc: Use perf_sample_data_init() for the FSL code
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git://git.infradead.org/users/cbou/battery-2.6.35由 Linus Torvalds 提交于
* git://git.infradead.org/users/cbou/battery-2.6.35: ds2782_battery: Rename get_current to fix build failure / name conflict
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: s2io: fixing DBG_PRINT() macro ath9k: fix dma direction for map/unmap in ath_rx_tasklet net: dev_forward_skb should call nf_reset net sched: fix race in mirred device removal tun: avoid BUG, dump packet on GSO errors bonding: set device in RLB ARP packet handler wimax/i2400m: Add PID & VID for Intel WiMAX 6250 ipv6: Don't add routes to ipv6 disabled interfaces. net: Fix skb_copy_expand() handling of ->csum_start net: Fix corruption of skb csum field in pskb_expand_head() of net/core/skbuff.c macvtap: Limit packet queue length ixgbe/igb: catch invalid VF settings bnx2x: Advance a module version bnx2x: Protect statistics ramrod and sequence number bnx2x: Protect a SM state change wireless: use netif_rx_ni in ieee80211_send_layer2_update
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- 27 7月, 2010 18 次提交
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由 Peter Zijlstra 提交于
We should use perf_sample_data_init() to initialize struct perf_sample_data. As explained in the description of commit dc1d628a ("perf: Provide generic perf_sample_data initialization"), it is possible for userspace to get the kernel to dereference data.raw, so if it is not initialized, that means that unprivileged userspace can possibly oops the kernel. Using perf_sample_data_init makes sure it gets initialized to NULL. This conversion should have been included in commit dc1d628a, but it got missed. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NKumar Gala <kumar.gala@freescale.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Axel Lin 提交于
In the case of platform_device_add() fail, we should call platform_device_put() instead of platform_device_del() Signed-off-by: NAxel Lin <axel.lin@gmail.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Axel Lin 提交于
We use voltage selector as an array index for typ_voltages. Thus the valid range for voltage selector should be 0..voltages_len-1. Signed-off-by: NAxel Lin <axel.lin@gmail.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Linus Torvalds 提交于
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Do not try to disable hpet if it hasn't been initialized before x86, i8259: Only register sysdev if we have a real 8259 PIC
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由 Breno Leitao 提交于
Patch 9e39f7c5 changed the DBG_PRINT() macro and the if clause was wrongly changed. It means that currently all the DBG_PRINT are being printed, flooding the kernel log buffer with things like: s2io: eth6: Next block at: c0000000b9c90000 s2io: eth6: In Neterion Tx routine Signed-off-by: NBreno Leitao <leitao@linux.vnet.ibm.com> Acked-by: NSreenivasa Honnur <Sreenivasa.Honnur@neterion.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq由 Linus Torvalds 提交于
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] powernow-k8: Limit Pstate transition latency check [CPUFREQ] Fix PCC driver error path [CPUFREQ] fix double freeing in error path of pcc-cpufreq [CPUFREQ] pcc driver should check for pcch method before calling _OSC [CPUFREQ] fix memory leak in cpufreq_add_dev [CPUFREQ] revert "[CPUFREQ] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)"
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git://git.linux-mips.org/pub/scm/upstream-linus由 Linus Torvalds 提交于
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: MIPS: Set io_map_base for several PCI bridges lacking it MIPS: Alchemy: Define eth platform devices in the correct order MIPS: BCM63xx: Prevent second enet registration on BCM6338 MIPS: Quit using undefined behavior of ADDU in 64-bit atomic operations. MIPS: N32: Define getdents64. MIPS: MTX-1: Fix PCI on the MeshCube and related boards MIPS: Make init_vdso a subsys_initcall. MIPS: "Fix" useless 'init_vdso successfully' message. MIPS: PowerTV: Move register setup to before reading registers. SOUND: Au1000: Fix section mismatch VIDEO: Au1100fb: Fix section mismatch VIDEO: PMAGB-B: Fix section mismatch VIDEO: PMAG-BA: Fix section mismatch NET: declance: Fix section mismatches VIDEO. gbefb: Fix section mismatches.
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由 Jesse Barnes 提交于
Fix error from the last pull request. Making sure we shut the panel off is more correct and saves power. Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: sysfs: allow creating symlinks from untagged to tagged directories sysfs: sysfs_delete_link handle symlinks from untagged to tagged directories. sysfs: Don't allow the creation of symlinks we can't remove
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: USB: musb: tusb6010: fix compile error with n8x0_defconfig USB: FTDI: Add support for the RT System VX-7 radio programming cable USB: add quirk for Broadcom BT dongle USB: usb-storage: fix initializations of urb fields USB: xhci: Set Mult field in endpoint context correctly. USB: sisusbvga: Fix for USB 3.0 USB: adds Artisman USB dongle to list of quirky devices USB: xhci: Set EP0 dequeue ptr after reset of configured device. USB: Fix USB3.0 Port Speed Downgrade after port reset USB: xHCI: Fix another bug in link TRB activation change. USB: option: Add support for AMOI Skypephone S2 USB: New PIDs for Qualcomm gobi 2000 (qcserial) USB: ftdi_sio: support for Signalyzer tools based on FTDI chips USB: s3c2410_udc: be aware of connected gadget driver USB: Expose vendor-specific ACM channel on Nokia 5230 USB: Add PID for Sierra 250U to drivers/usb/serial/sierra.c USB: option: add support for 1da5:4518
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: serial: fix rs485 for atmel_serial on avr32
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git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: add pipe A force quirks to i915 driver drm/i915: Fix panel fitting regression since 734b4157 drm/i915: fix deadlock in fb teardown drm/i915: don't free non-existent compressed llb on ILK+ agp/intel: Use the correct mask to detect i830 aperture size. drm/i915: disable FBC when more than one pipe is active drm/i915: Use the correct scanout alignment for fbcon. drm/i915: make sure eDP panel is turned on drm/i915: add PANEL_UNLOCK_REGS definition drm/i915: Make G4X-style PLL search more permissive drm/i915: Clear any existing dither mode prior to enabling spatial dithering drm/i915: handle shared framebuffers when flipping drm/i915: Explosion following OOM in do_execbuffer. gpu/drm/i915: Add a blacklist to omit modeset on LID open
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由 Borislav Petkov 提交于
The Pstate transition latency check was added for broken F10h BIOSen which wrongly contain a value of 0 for transition and bus master latency. Fam11h and later, however, (will) have similar transition latency so extend that behavior for them too. Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com> Signed-off-by: NDave Jones <davej@redhat.com>
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由 Matthew Garrett 提交于
The PCC cpufreq driver unmaps the mailbox address range if any CPUs fail to initialise, but doesn't do anything to remove the registered CPUs from the cpufreq core resulting in failures further down the line. We're better off simply returning a failure - the cpufreq core will unregister us cleanly if we end up with no successfully registered CPUs. Tidy up the failure path and also add a sanity check to ensure that the firmware gives us a realistic frequency - the core deals badly with that being set to 0. Signed-off-by: NMatthew Garrett <mjg@redhat.com> Cc: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Signed-off-by: NDave Jones <davej@redhat.com>
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由 Daniel J Blueman 提交于
Prevent double freeing on error path. Signed-off-by: NDaniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: NDave Jones <davej@redhat.com>
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由 Matthew Garrett 提交于
The pcc specification documents an _OSC method that's incompatible with the one defined as part of the ACPI spec. This shouldn't be a problem as both are supposed to be guarded with a UUID. Unfortunately approximately nobody (including HP, who wrote this spec) properly check the UUID on entry to the _OSC call. Right now this could result in surprising behaviour if the pcc driver performs an _OSC call on a machine that doesn't implement the pcc specification. Check whether the PCCH method exists first in order to reduce this probability. Signed-off-by: NMatthew Garrett <mjg@redhat.com> Cc: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Signed-off-by: NDave Jones <davej@redhat.com>
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由 Xiaotian Feng 提交于
We didn't free policy->related_cpus in error path err_unlock_policy. This is catched by following kmemleak report: unreferenced object 0xffff88022a0b96d0 (size 512): comm "modprobe", pid 886, jiffies 4294689177 (age 780.694s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff8111ebe5>] create_object+0x186/0x281 [<ffffffff814fad4f>] kmemleak_alloc+0x60/0xa7 [<ffffffff8111127a>] kmem_cache_alloc_node_notrace+0x120/0x142 [<ffffffff81262e4f>] alloc_cpumask_var_node+0x2c/0xd7 [<ffffffff81262f0b>] alloc_cpumask_var+0x11/0x13 [<ffffffff81262f1c>] zalloc_cpumask_var+0xf/0x11 [<ffffffff8140fac0>] cpufreq_add_dev+0x11f/0x547 [<ffffffff81334bda>] sysdev_driver_register+0xc2/0x11d [<ffffffff8140e334>] cpufreq_register_driver+0xcb/0x1b8 [<ffffffffa032e040>] 0xffffffffa032e040 [<ffffffff810021ba>] do_one_initcall+0x5e/0x15c [<ffffffff81087f94>] sys_init_module+0xa6/0x1e6 [<ffffffff81009bc2>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff Signed-off-by: NXiaotian Feng <dfeng@redhat.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Prarit Bhargava <prarit@redhat.com> Signed-off-by: NDave Jones <davej@redhat.com>
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