- 22 Apr, 2010 23 commits
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Alan Stern authored
This patch (as1369) fixes a problem in ehci-hcd. Some controllers occasionally run into trouble when the driver reclaims siTDs too quickly. This can happen while streaming audio; it causes the controller to crash. The patch changes siTD reclamation to work the same way as iTD reclamation: Completed siTDs are stored on a list and not reused until at least one frame has passed. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Tested-by:
Nate Case <ncase@xes-inc.com> CC: <stable@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
This patch (as1363) changes the way USB remote wakeup is handled during system sleeps. It won't be enabled unless an interface driver specifically needs it. Also, it won't be enabled during the FREEZE or QUIESCE phases of hibernation, when the system doesn't respond to wakeup events anyway. Finally, if the device is already runtime-suspended with remote wakeup enabled, but wakeup is supposed to be disabled for the system sleep, the device gets woken up so that it can be suspended again with the proper wakeup setting. This will fix problems people have reported with certain USB webcams that generate wakeup requests when they shouldn't, and as a result cause system suspends to fail. See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/515109Signed-off-by:
Erik Andrén <erik.andren@gmail.com> CC: <stable@kernel.org> Signed-off-by:
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Manuel Jander authored
I read a rumor that the AdLink ND6530 USB RS232, RS422 and RS485 isolated adapter is actually a PL2303 based usb serial adapter. I tried it out, and as far as I can tell it works. Signed-off-by:
Manuel Jander <manuel.jander@gmail.com> Signed-off-by:
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William Lightning authored
Signed-off-by:
William Lightning <kassah@gmail.com> Signed-off-by:
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Sergei Shtylyov authored
It appears that the DA8xx/OMAP-L1x glue layer went into the kernel uncompilable: commit 1960e693 (davinci: da8xx/omapl1: add support for the second sysconfig module) has renamed DA8XX_SYSCFG_* macros to DA8XX_SYSCFG0_* and it's been committed before the glue layer... Signed-off-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
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Dan Williams authored
These phones also have the familiar ttyACM0/ttyUSB0 schizophrenia when placed into "Dial-up Networking" mode after connecting a USB cable. Signed-off-by:
Dan Williams <dcbw@redhat.com> Signed-off-by:
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David Vrabel authored
The Keep Alive IE only has space for WUIE_ELT_MAX (== 4) device addresses. Signed-off-by:
David Vrabel <david.vrabel@csr.com> Signed-off-by:
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Ajay Kumar Gupta authored
Sets the regulator values to NULL if they are not defined. This is required to fix the kernel panic in exit path when EHCI module is removed on the platforms where EHCI regulator are not set. Signed-off-by:
Ajay Kumar Gupta <ajay.gupta@ti.com> Signed-off-by:
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Harrison Metzger authored
This patch fixes a bug with the usbsevseg driver which assumed that USB autosuspend will always be used. Signed-off-by:
Harrison Metzger <harrisonmetz@gmail.com> Signed-off-by:
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Alex Manoussakis authored
The following patch adds support for Multitech Systems' MT9234MU and MT9234ZBA usb dialup fax modems. It is based on a patch and firmware provided to me by Multitech Systems' support, after I reported to them that my MT9234MU modem was not working with recent linux kernels. Signed-off-by:
Alex Manoussakis <alex@juniper.net> Signed-off-by:
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git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds authored
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] zcore: Fix reipl device detection [S390] vdso: use ntp adjusted clock multiplier [S390] cio: use exception-save stsch [S390] add hook to reenable mss after hibernation [S390] cio: allow enable_facility from outside init functions [S390] dasd: fix endless loop in erp
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Michael Holzheu authored
The reipl device information is passed from the kernel to zfcpdump using a pointer in the lowcore (0xe00) that points to the reipl information Currently if that pointer is not zero, we copy the reipl information. If the pointer is not initialized and points outside the accessible memory, it can happen that the memory copy fails. In that case we currently stop the initialization of zcore which leads to a failing kernel dump. The correct behavior is to disable the reipl after dump and continue with zcore intialization. Signed-off-by:
Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Hendrik Brueckner authored
Commit "timekeeping: Fix clock_gettime vsyscall time warp" (0696b711) introduced the new parameter "mult" to update_vsyscall(). This parameter contains the internal NTP adjusted clock multiplier. The s390x vdso did not use this adjusted multiplier. Instead, it used the constant clock multiplier for gettimeofday() and clock_gettime() variants. This may result in observable time warps as explained in commit 0696b711. Make the NTP adjusted clock multiplier available to the s390x vdso implementation and use it for time calculations. Cc: <stable@kernel.org> Signed-off-by:
Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by:
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Sebastian Ott authored
Using stsch on schids with ssid != 0 can lead to an operand exception. Use stsch_err to handle potential exceptions if we fail to reenable mss after hibernation. Cc: <stable@kernel.org> Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
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Sebastian Ott authored
Reenable multiple subchannel sets after hibernation, prior to the device callbacks. Cc: <stable@kernel.org> Signed-off-by:
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Sebastian Ott authored
Prepare chsc_enable_facility to be used from outside init functions. Use static memory for the chsc call and protect its access by a spinlock (although there is no concurrent usage). Cc: <stable@kernel.org> Signed-off-by:
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Stefan Haberland authored
If not enough memory is available to build a new erp request it ended up in an endless loop trying to build erp requests. Fixed the loop to proceed the next request instead. Signed-off-by:
Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] bnx2i: Bug fixes related to MTU change issue when there are active iscsi sessions [SCSI] ibmvscsi: fix DMA API misuse [SCSI] wd7000: fix reset handler typo spin_unlock_irq() => spin_lock_irq() [SCSI] zfcp: Fix tracing of requests with error status [SCSI] zfcp: Update MAINTAINERS entry [SCSI] iscsi_tcp: fix relogin/shutdown hang [SCSI] qla2xxx: fix lock imbalance [SCSI] lpfc: fix lock imbalances [SCSI] be2iscsi: fix lock imbalance [SCSI] dpt_i2o: several use after free issues
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Balbir Singh authored
The virtio balloon driver can dig into the reservation pools of the OS to satisfy a balloon request. This is not advisable and other balloon drivers (drivers/xen/balloon.c) avoid this as well. The patch also adds changes to avoid printing a warning if allocation fails, since we retry after sometime anyway. Signed-off-by:
Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Cc: kvm <kvm@vger.kernel.org> Cc: stable@kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.fluff.org/bjdooks/linuxLinus Torvalds authored
* 'for-linus/i2c' of git://git.fluff.org/bjdooks/linux: i2c-stu300: off by one issue i2c-pnx: Add stop conditions for end of transfer i2c-pnx: Limit maximum divider to 1023 i2c-omap: fix OOPS in omap_i2c_unidle() during probe i2c-imx: fix error handling
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Randy Dunlap authored
When the dt3155 driver is built-in (not as a loadable module), these build errors happen: drivers/staging/dt3155/dt3155_drv.c:1047: error: implicit declaration of function 'request_irq' drivers/staging/dt3155/dt3155_drv.c:1048: error: 'IRQF_SHARED' undeclared (first use in this function) drivers/staging/dt3155/dt3155_drv.c:1048: error: 'IRQF_DISABLED' undeclared (first use in this function) drivers/staging/dt3155/dt3155_drv.c:1091: error: implicit declaration of function 'free_irq' so remove the #ifdef MODULE check since it's not needed. Also remove the CONFIG_PCI check since the Kconfig file already requires that. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Cc: Scott Smedley <ss@aao.gov.au> Tested-by:
Jan III Sobieski <jan3sobi3ski@gmail.com> Signed-off-by:
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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: security: testing the wrong variable in create_by_name() CRED: Fix a race in creds_are_invalid() in credentials debugging CRED: Fix double free in prepare_usermodehelper_creds() error handling
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Dan Carpenter authored
There is a typo here. We should be testing "*dentry" instead of "dentry". If "*dentry" is an ERR_PTR, it gets dereferenced in either mkdir() or create() which would cause an OOPs. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
James Morris <jmorris@namei.org>
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- 21 Apr, 2010 16 commits
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David Howells authored
creds_are_invalid() reads both cred->usage and cred->subscribers and then compares them to make sure the number of processes subscribed to a cred struct never exceeds the refcount of that cred struct. The problem is that this can cause a race with both copy_creds() and exit_creds() as the two counters, whilst they are of atomic_t type, are only atomic with respect to themselves, and not atomic with respect to each other. This means that if creds_are_invalid() can read the values on one CPU whilst they're being modified on another CPU, and so can observe an evolving state in which the subscribers count now is greater than the usage count a moment before. Switching the order in which the counts are read cannot help, so the thing to do is to remove that particular check. I had considered rechecking the values to see if they're in flux if the test fails, but I can't guarantee they won't appear the same, even if they've changed several times in the meantime. Note that this can only happen if CONFIG_DEBUG_CREDENTIALS is enabled. The problem is only likely to occur with multithreaded programs, and can be tested by the tst-eintr1 program from glibc's "make check". The symptoms look like: CRED: Invalid credentials CRED: At include/linux/cred.h:240 CRED: Specified credentials: ffff88003dda5878 [real][eff] CRED: ->magic=43736564, put_addr=(null) CRED: ->usage=766, subscr=766 CRED: ->*uid = { 0,0,0,0 } CRED: ->*gid = { 0,0,0,0 } CRED: ->security is ffff88003d72f538 CRED: ->security {359, 359} ------------[ cut here ]------------ kernel BUG at kernel/cred.c:850! ... RIP: 0010:[<ffffffff81049889>] [<ffffffff81049889>] __invalid_creds+0x4e/0x52 ... Call Trace: [<ffffffff8104a37b>] copy_creds+0x6b/0x23f Note the ->usage=766 and subscr=766. The values appear the same because they've been re-read since the check was made. Reported-by:Roland McGrath <roland@redhat.com> Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: allow 4 coldfire serial ports m68knommu: fix coldfire tcdrain m68knommu: remove a duplicate vector setting line for 68360 Fix m68k-uclinux's rt_sigreturn trampoline m68knommu: correct the CC flags for Coldfire M5272 targets uclinux: error message when FLAT reloc symbol is invalid, v2
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git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: mc13783-regulator: fix a memory leak in mc13783_regulator_remove regulator: Let drivers know when they use the stub API
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git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfsLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs: [LogFS] Split large truncated into smaller chunks [LogFS] Set s_bdi [LogFS] Prevent mempool_destroy NULL pointer dereference [LogFS] Move assertion [LogFS] Plug 8 byte information leak [LogFS] Prevent memory corruption on large deletes [LogFS] Remove unused method Fix trivial conflict with added header includes in fs/logfs/super.c
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git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: jfs: add jfs specific ->setattr call jfs: fix diAllocExt error in resizing filesystem jfs_dmap.[ch]: trivial typo fix: s/heigth/height/g
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: Fix TSS size check for 16-bit tasks KVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release() KVM: Increase NR_IOBUS_DEVS limit to 200 KVM: fix the handling of dirty bitmaps to avoid overflows KVM: MMU: fix kvm_mmu_zap_page() and its calling path KVM: VMX: Save/restore rflags.vm correctly in real mode KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL KVM: Don't spam kernel log when injecting exceptions due to bad cr writes KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails KVM: take srcu lock before call to complete_pio()
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git://neil.brown.name/mdLinus Torvalds authored
* 'for-linus' of git://neil.brown.name/md: md/raid5: allow for more than 2^31 chunks.
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David Howells authored
In the error handling in afs_mntpt_do_automount(), we pass an error pointer to page_cache_release() if read_mapping_page() failed. Instead, we should extend the gotos around the error handling we don't need. Reported-by:
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Jan Kiszka authored
A 16-bit TSS is only 44 bytes long. So make sure to test for the correct size on task switch. Signed-off-by:
Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Lai Jiangshan authored
I got this dmesg due to srcu_read_lock() is missing in kvm_mmu_notifier_release(). =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- arch/x86/kvm/x86.h:72 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 2 locks held by qemu-system-x86/3100: #0: (rcu_read_lock){.+.+..}, at: [<ffffffff810d73dc>] __mmu_notifier_release+0x38/0xdf #1: (&(&kvm->mmu_lock)->rlock){+.+...}, at: [<ffffffffa0130a6a>] kvm_mmu_zap_all+0x21/0x5e [kvm] stack backtrace: Pid: 3100, comm: qemu-system-x86 Not tainted 2.6.34-rc3-22949-gbc8a97a-dirty #2 Call Trace: [<ffffffff8106afd9>] lockdep_rcu_dereference+0xaa/0xb3 [<ffffffffa0123a89>] unalias_gfn+0x56/0xab [kvm] [<ffffffffa0119600>] gfn_to_memslot+0x16/0x25 [kvm] [<ffffffffa012ffca>] gfn_to_rmap+0x17/0x6e [kvm] [<ffffffffa01300c1>] rmap_remove+0xa0/0x19d [kvm] [<ffffffffa0130649>] kvm_mmu_zap_page+0x109/0x34d [kvm] [<ffffffffa0130a7e>] kvm_mmu_zap_all+0x35/0x5e [kvm] [<ffffffffa0122870>] kvm_arch_flush_shadow+0x16/0x22 [kvm] [<ffffffffa01189e0>] kvm_mmu_notifier_release+0x15/0x17 [kvm] [<ffffffff810d742c>] __mmu_notifier_release+0x88/0xdf [<ffffffff810d73dc>] ? __mmu_notifier_release+0x38/0xdf [<ffffffff81040848>] ? exit_mm+0xe0/0x115 [<ffffffff810c2cb0>] exit_mmap+0x2c/0x17e [<ffffffff8103c472>] mmput+0x2d/0xd4 [<ffffffff81040870>] exit_mm+0x108/0x115 [...] Signed-off-by:Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by:
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Philippe De Muyter authored
Fix driver/serial/mcf.c for 4-ports coldfire's (e.g. MCF5484). Signed-off-by:
Philippe De Muyter <phdm@macqel.be> Signed-off-by:
Greg Ungerer <gerg@uclinux.org>
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Philippe De Muyter authored
Fix tcdrain on coldfire uarts. Currently with coldfire uarts tcdrain returns without waiting for txempty, because (tx)fifosize is 0. Fix that and call uart_update_timeout when setting the baud rate, otherwise tcdrain will wait for an half our :) Also constify mcf_uart_ops. Signed-off-by:
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Greg Ungerer authored
Remove a duplicate vector setting line for the 68360 interrupt setup. Pointed out by Roel Kluin <roel.kluin@gmail.com> Signed-off-by: -
Maxim Kuvyrkov authored
Signed-off-by:
Maxim Kuvyrkov <maxim@codesourcery.com> Signed-off-by:
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Philip Nye authored
Signed-off-by:
Philip Nye <philipn@engarts.com> Signed-off-by:
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Jun Sun authored
This patch fixes a cosmetic error in printk. Text segment and data/bss segment are allocated from two different areas. It is not meaningful to give the diff between them in the error reporting messages. Signed-off-by:
Jun Sun <jsun@junsun.net> Signed-off-by:
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- 20 Apr, 2010 1 commit
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David Howells authored
Patch 570b8fb5: Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Date: Tue Mar 30 00:04:00 2010 +0100 Subject: CRED: Fix memory leak in error handling attempts to fix a memory leak in the error handling by making the offending return statement into a jump down to the bottom of the function where a kfree(tgcred) is inserted. This is, however, incorrect, as it does a kfree() after doing put_cred() if security_prepare_creds() fails. That will result in a double free if 'error' is jumped to as put_cred() will also attempt to free the new tgcred record by virtue of it being pointed to by the new cred record. Signed-off-by:
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