- 12 Dec, 2005 40 commits
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Linus Torvalds authored
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Brian King authored
There is a double free in the scsi scan code if a LLDD's slave_alloc() call fails. There is a direct call to scsi_free_queue and then the following put_device calls the release function, which also frees the queue. Remove the redundant scsi_free_queue. Signed-off-by:
Brian King <brking@us.ibm.com> Tested-by:
Nathan Lynch <ntl@pobox.com> [ Also removed some strange whitespace artifacts in that area ] Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
This reverts commit 1b0997f5, which in turn reverted 34ea80ec (which is thus re-instated). Quoth James Bottomley: "All it's doing is deferring the device_put() from the scsi_put_command() to after the scsi_run_queue(), which doesn't fix the sleep while atomic problem of the device release method. In both cases we still get the semaphore in atomic context problem which is caused by scsi_reap_target() doing a device_del(), which I assumed (wrongly) was valid from atomic context." who also promised to fix scsi_reap_target(). Signed-off-by:
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NeilBrown authored
The raid5 stripe cache was recently changed from fixed size (NR_STRIPES) to variable size (conf->max_nr_stripes). However there are two places that still use the constant and as a result, reducing the size of the stripe cache can result in a deadlock. Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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NeilBrown authored
Who would submit code with a FIXME like that in it !!!! Signed-off-by:
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Andrew Morton authored
CONFIG_MAX_RAW_DEVS should appear immediately after CONFIG_RAW_DRIVER. Signed-off-by:
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Dave Jones authored
This has been broken for months. On resume, we call acpi_pci_link_set() with interrupts off, so we get a warning when we try to do a kmalloc of non atomic memory. The actual allocation is just 2 long's (plus extra byte for some reason I can't fathom), so a simple conversion to GFP_ATOMIC is probably the safest way to fix this. The error looks like this.. Debug: sleeping function called from invalid context at mm/slab.c:2486 in_atomic():0, irqs_disabled():1 [<c0143f6c>] kmem_cache_alloc+0x40/0x56 [<c0206a2e>] acpi_pci_link_set+0x3f/0x17f [<c0206f96>] irqrouter_resume+0x1e/0x3c [<c0239bca>] __sysdev_resume+0x11/0x6b [<c0239e88>] sysdev_resume+0x34/0x52 [<c023de21>] device_power_up+0x5/0xa Signed-off-by:
Dave Jones <davej@redhat.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by:
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Haren Myneni authored
Hitting BUG_ON() in __alloc_bootmem_core() when there is no free page available in the first node's memory. For the case of kdump on PPC64 (Power 4 machine), the captured kernel is used two memory regions - memory for TCE tables (tce-base and tce-size at top of RAM and reserved) and captured kernel memory region (crashk_base and crashk_size). Since we reserve the memory for the first node, we should be returning from __alloc_bootmem_core() to search for the next node (pg_dat). Currently, find_next_zero_bit() is returning the n^th bit (eidx) when there is no free page. Then, test_bit() is failed since we set 0xff only for the actual size initially (init_bootmem_core()) even though rounded up to one page for bdata->node_bootmem_map. We are hitting the BUG_ON after failing to enter second "for" loop. Signed-off-by:
Haren Myneni <haren@us.ibm.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Dave Hansen <haveblue@us.ibm.com> Signed-off-by:
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Yasunori Goto authored
I realized ZONE_DMA32 has a trivial bug at Kconfig for ia64. In include/linux/gfp.h on 2.6.15-rc5-mm1, CONFIG is define like followings. #ifdef CONFIG_DMA_IS_DMA32 #define __GFP_DMA32 ((__force gfp_t)0x01) /* ZONE_DMA is ZONE_DMA32 */ : : So, CONFIG_"ZONE"_DMA_IS_DMA32 is clearly wrong. Signed-off-by:Yasunori Goto <y-goto@jp.fujitsu.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by:
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Nicolas Pitre authored
The bd622663 commit broke the UCB1x00 touchscreen driver since the idev structure was assumed to be into the ts structure, simply casting the former to the later in a couple places. This patch fixes those, and also cache the idev pointer between multiple calls to input_report_abs() to avoid growing the compiled code needlessly. Signed-off-by:
Nicolas Pitre <nico@cam.org> Cc: Dmitry Torokhov <dtor_core@ameritech.net> Signed-off-by:
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Dave Jones authored
Spotted by a Fedora user. Compiling with DEBUG_PARPORT set fails due to the broken cast. Just remove it. Signed-off-by:
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Keshavamurthy Anil S authored
When multiple probes are registered at the same address and if due to some recursion (probe getting triggered within a probe handler), we skip calling pre_handlers and just increment nmissed field. The below patch make sure it walks the list for multiple probes case. Without the below patch we get incorrect results of nmissed count for multiple probe case. Signed-off-by:
Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by:
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Keshavamurthy Anil S authored
For Kprobes critical path is the path from debug break exception handler till the control reaches kprobes exception code. No probes can be supported in this path as we will end up in recursion. This patch prevents this by moving the below function to safe __kprobes section onto which no probes can be inserted. Signed-off-by:
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Matt Domsch authored
The IPMI specifcation says the generator ID is 0x20, but that is for bits 7-1. Bit 0 is set to specify it is a software event. The correct value is 0x41. Without this fix, panic events written into the System Event Log appear to come from an "unknown" generator, rather than from the kernel. Signed-off-by:
Jordan Hargrave <Jordan_Hargrave@dell.com> Signed-off-by:
Matt Domsch <Matt_Domsch@dell.com> Acked-by:
Corey Minyard <minyard@acm.org> Signed-off-by:
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Mauro Carvalho Chehab authored
I2C ID renamed to I2C_DRIVERID_INFRARED Acked-off-by:
Jean Delvare <khali@linux-fr.org> Signed-off-by:
Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by:
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Sascha Sommer authored
Convert em28xx to use vm_insert_page instead of remap_pfn_range Signed-off-by:
Sascha Sommer <saschasommer@freenet.de> Signed-off-by:
Michael Krufky <mkrufky@gmail.com> Signed-off-by:
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Ricardo Cerqueira authored
- The Pinnacle PCTV Stereo needs tda9887 port2 set to 1 - Without this patch, mt20xx tuner is not detected and the board doesn't tune. Signed-off-by:
Ricardo Cerqueira <v4l@cerqueira.org> Signed-off-by:
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Mauro Carvalho Chehab authored
Clean up whitespaces at v4l/dvb files Signed-off-by:
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Mauro Carvalho Chehab authored
Clean up whitespaces at v4l/dvb files Signed-off-by:
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Mauro Carvalho Chehab authored
Clean up whitespaces at v4l/dvb files Signed-off-by:
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Mauro Carvalho Chehab authored
Clean up whitespaces at v4l/dvb files Signed-off-by:
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Hugh Dickins authored
Page count should be initialized to 1 on each of the MIPS empty zero pages, to avoid a bad_page warning whenever one of them is freed from all mappings. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Pierre Ossman authored
kauditd was causing suspends to fail because it refused to freeze. Adding a try_to_freeze() to its sleep loop solves the issue. Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx> Acked-by:
Pavel Machek <pavel@suse.cz> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Pekka J Enberg authored
arch/um/kernel/tt/uaccess.c: In function `copy_from_user_tt': arch/um/kernel/tt/uaccess.c:11: error: `FIXADDR_USER_START' undeclared (first use in this function) arch/um/kernel/tt/uaccess.c:11: error: (Each undeclared identifier is reported only once arch/um/kernel/tt/uaccess.c:11: error: for each function it appears in.) I get the compile error when I disable CONFIG_MODE_SKAS. Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Acked-by:
Paolo Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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John McCutchan authored
The below patch lets userspace have more control over the inodes that inotify will watch. It introduces two new flags. IN_ONLYDIR -- only watch the inode if it is a directory. This is needed to avoid the race that can occur when we want to be sure that we are watching a directory. IN_DONT_FOLLOW -- don't follow a symlink. In combination with IN_ONLYDIR we can make sure that we don't watch the target of symlinks. The issues the flags fix came up when writing the gnome-vfs inotify backend. Default behaviour is unchanged. Signed-off-by:John McCutchan <ttb@tentacle.dhs.org> Acked-by:
Robert Love <rml@novell.com> Signed-off-by:
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Jens Axboe authored
This undoes the put_disk patch I sent in before. If I had been paying attention I would have seen that we call put_disk from free_hba during driver unload. That's the only time we want to call it. If it's called from deregister disk we may remove the controller (cNd0) unintentionally. Signed-off-by:
Mike Miller <mike.miller@hp.com> Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
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Keshavamurthy Anil S authored
When registering multiple kprobes at the same address, we leave a small window where the kprobe hlist will not contain a reference to the registered kprobe, leading to potentially, a system crash if the breakpoint is hit on another processor. Patch below now automically relpace the old kprobe with the new kprobe from the hash list. Signed-off-by:
Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
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Ingo Molnar authored
Add list_replace_rcu: replace old entry by new one. Signed-off-by:
Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Matt Helsley authored
This adds a timestamp field to the events sent via the process event connector. The timestamp allows listeners to accurately account the duration(s) between a process' events and offers strong means with which to determine the order of events with respect to a given task while also avoiding the addition of per-task data. This alters the size and layout of the event structure and hence would break compatibility if process events connector as it stands in 2.6.15-rc2 were released as a mainline kernel. Signed-off-by:
Matt Helsley <matthltc@us.ibm.com> Signed-off-by:
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Matt Helsley authored
There are several functions that might seem appropriate for a timestamp: get_cycles() current_kernel_time() do_gettimeofday() <read jiffies/jiffies_64> Each has problems with combinations of SMP-safety, low resolution, and monotonicity. This patch adds a new function that returns a monotonic SMP-safe timestamp with nanosecond resolution where available. Changes: Split timestamp into separate patch Moved to kernel/time.c Renamed to getnstimestamp Fixed unintended-pointer-arithmetic bug Signed-off-by:
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Daniel Drake authored
Commit f549d6c1 introduced a generic fallback for security xattrs, but appears to include a subtle bug. Gentoo users with kernels with selinux compiled in, and coreutils compiled with acl support, noticed that they could not copy files on tmpfs using 'cp'. cp (compiled with acl support) copies the file, lists the extended attributes on the old file, copies them all to the new file, and then exits. However the listxattr() calls were failing with this odd behaviour: llistxattr("a.out", (nil), 0) = 17 llistxattr("a.out", 0x7fffff8c6cb0, 17) = -1 ERANGE (Numerical result out of range) I believe this is a simple problem in the logic used to check the buffer sizes; if the user sends a buffer the exact size of the data, then its ok :) This change solves the problem. More info can be found at http://bugs.gentoo.org/113138Signed-off-by:
Daniel Drake <dsd@gentoo.org> Acked-by:
James Morris <jmorris@namei.org> Acked-by:
Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by:
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Srivatsa Vaddagiri authored
Accessing nohz_cpu_mask before incrementing rcp->cur is racy. It can cause tickless idle CPUs to be included in rsp->cpumask, which will extend graceperiods unnecessarily. Fix this race. It has been tested using extensions to RCU torture module that forces various CPUs to become idle. Signed-off-by:
Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Dipankar Sarma <dipankar@in.ibm.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
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Srivatsa Vaddagiri authored
While doing some test of RCU torture module, I hit a OOPS in rcu_do_batch, which was trying to processes callback of a module that was just removed. This is because we weren't waiting long enough for all callbacks to fire. Signed-off-by:
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Dipankar Sarma authored
This introduces a new interface - rcu_barrier() which waits until all the RCUs queued until this call have been completed. Reiser4 needs this, because we do more than just freeing memory object in our RCU callback: we also remove it from the list hanging off super-block. This means, that before freeing reiser4-specific portion of super-block (during umount) we have to wait until all pending RCU callbacks are executed. The only change of reiser4 made to the original patch, is exporting of rcu_barrier(). Cc: Hans Reiser <reiser@namesys.com> Cc: Vladimir V. Saveliev <vs@namesys.com> Signed-off-by:
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Andreas Gruenbacher authored
Reported by Jacques de Mer and Daniel Drake <dsd@gentoo.org>. Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Signed-off-by:
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Andreas Schwab authored
Sam Ravnborg <sam@ravnborg.org> writes: > Author: Uwe Zeisberger <zeisberg@informatik.uni-freiburg.de> > > [PATCH] kbuild: make kernelrelease in unconfigured kernel prints an error > > Do not include .config for target kernelrelease This is wrong. KERNELRELEASE depends on CONFIG_LOCALVERSION, thus you need .config. Signed-off-by:
Andreas Schwab <schwab@suse.de> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
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Shaohua Li authored
With CPU hotplug enabled, NMI watchdog stoped working. It appears the violation is the cpu_online check in nmi handler. local ACPI based NMI watchdog is initialized before we set CPU online for APs. It's quite possible a NMI is fired before we set CPU online, and that's what happens here. Signed-off-by:
Shaohua Li <shaohua.li@intel.com> Acked-by:
Zwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by:
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Mao, Bibo authored
When a Kprobes are inserted/removed on a modules, the modules must be ref counted so as not to allow to unload while probes are registered on that module. Without this patch, the probed module is free to unload, and when the probing module unregister the probe, the kpobes code while trying to replace the original instruction might crash. Signed-off-by:
Mao Bibo <bibo.mao@intel.com> Signed-off-by:
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Andrew Morton authored
SetPageDirty() and ClearPageDirty() are low-level thing which filesystems shouldn't be using. They bypass dirty page accounting. Cc: David Woodhouse <dwmw2@infradead.org> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Linus Torvalds authored
The VM layer (for historical reasons) turns a read-only shared mmap into a private-like mapping with the VM_MAYWRITE bit clear. Thus checking just VM_SHARED isn't actually sufficient. So use a trivial helper function for the cases where we wanted to inquire if a mapping was COW-like or not. Moo! Signed-off-by:
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