- 21 Feb, 2006 37 commits
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Atsushi Nemoto authored
It seems current get_user() incorrectly sign-extend an unsigned int value on 64bit kernel. I think this is because '(__typeof__(val))' cast in final assignment. I suppose the cast should be '(__typeof__(*(addr))'. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Ralf Baechle authored
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Björn Steinbrink authored
In daemonize() a new thread gets cleaned up and 'merged' with init_task. The current fs_struct is handled there, but not the current namespace. This adds the namespace part. [ Eric Biederman pointed out the namespace wrappers, and also notes that we can't ever count on using our parents namespace because we already have called exit_fs(), which is the only way to the namespace from a process. ] Signed-off-by:
Björn Steinbrink <B.Steinbrink@gmx.de> Acked-by:
Eric Biederman <ebiederm@xmission.com> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
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Ralf Baechle authored
All actual uses of the symbol refer to CONFIG_SH_STANDARD_BIOS so this option could never be activated on H8/300. Signed-off-by:
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Linus Torvalds authored
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Hirokazu Takata authored
This patch updates and fixes sys_tas() routine for m32r. In the previous implementation, a lockup rarely caused at sys_tas() routine in SMP environment. > > The problem is that touching *addr will generate an oops if that page isn't > > paged in. If we convert it to use get_user() then that's an improvement, > > but we must not run get_user() under spinlock or local_irq_disable(). I rewrote sys_tas() routine by using "lock -> unlock" instructions, and utilizing the m32r's interrupt handling characteristics; the m32r processor can accept interrupts only at the 32-bit instruction boundary. So, the "unlock" instruction can be executed continuously after the "lock" instruction execution without any interruptions. In addition, to solve such a page_fault problem, I use a fixup code like get_user(). And, as for the kernel lockup problem, we found that a calling do_page_fault() routine with disabling interrupts might cause a lockup at flush_tlb_others(), because we checked a completion of IPI handler's operations in a spin-locked critical section. Therefore, by using "lock -> unlock" code, we can implement the sys_tas() rouitine without disabling interrupts explicitly, then no lockups would happen at flush_tlb_others(), I hope. Compile check and some working test in SMP environment have done. Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Hirokazu Takata authored
This patch fixes a bug of include/asm-m32r/system.h:__cmpxchg_u32(). static __inline__ unsigned long __cmpxchg_u32(volatile unsigned int *p, unsigned int old, unsigned int new); In __cmpxchg_u32(), the "old" value must not be changed to the previous "*p" value. But the former code modifies the previous "*p" value. A deadlock at _atomic_dec_and_lock sometimes happened due to this bug. Signed-off-by:
Hayato Fujiwara <fujiwara@linux-m32r.org> Signed-off-by:
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Heiko Carstens authored
Revert dasd eer module until we have a common understanding of how the interface should be. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Peter Oberparleiter authored
When using the dasd diag discipline, the base discipline module (eckd or fba) can be unloaded, even though the dasd driver requires both discipline modules (base and diag) to work correctly. Implement reference counting for both base and diag discipline modules in order to fix this. Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
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Frank Pavlic authored
Using FCP devices with V=V support, the input queue stalled when CCQ 97 had been returned in qdio_do_eqbs. When this happen we have to reissue the eqbs instruction. Another bug was when V=V was enabled we checked if hardware has SIGA-sync support. If not we returned with 0 from tiqdio_is_inbound_q_done. Thus qdio lost initiative on FCP devices and input queue stalled. Running devices in V=V there is no SIGA-sync support but nevertheless we have to process tiqdio_is_inbound_q_done either. Signed-off-by:
Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by:
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Carl-Daniel Hailfinger authored
Make resume from suspend-to-ram possible for Samsung P35 laptops. The radeon mobility 9700 chip on Samsung P35 laptops locks up everything on resume from suspend-to-ram if it is not reinitialized. VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon 9600 M10] Class 0300: 1002:4e50 Subsystem: 144d:c00c Unfortunately, the DMI strings are mostly identical for all Samsung laptops. So we match the PCI ID and subsystem ID of the graphics card which is unique for each Samsung laptop model. Signed-off-by:Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Alexey Dobriyan authored
[akpm; it happens that the code was still correct, only inefficient ] Signed-off-by:
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Zhu Yi authored
The following message will be only printed if DEBUG_NOTIF is on. "Unknown notification: subtype=40,flags=0xa0,size=40" Signed-off-by:
Zhu Yi <yi.zhu@intel.com> Cc: James Ketrenos <jketreno@linux.intel.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: "John W. Linville" <linville@tuxdriver.com> Signed-off-by:
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Stephen Rothwell authored
The compat syscalls are added to sys_ni.c since they are not defined if the above CONFIG options are off. Also, nfs would not build with CONFIG_SYSCTL off. Noticed by Arthur Othieno. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by:
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Luke Yang authored
Signed-off-by:
Luke Yang <luke.adi@gmail.com> Acked-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Benjamin Herrenschmidt authored
Some recent PowerBook models tend to lose the ethernet PHY on suspend/resume. It -seems- that they use a combo ethernet-firewire PHY chip and the firewire PHY seems to die the same way when that happens. Not trying to toggle the firewire cable power appears to fix it. So this patch disables changes to the firewire cable power control GPIO on those models. Signed-off-by:
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Eric Van Hensbergen authored
Minor updates to the documentation to bring them into sync with current websites and available features. The debug flag was switched back to hex to match the documentation. Signed-off-by:
Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by:
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Peter Osterlund authored
When attempting to open the device for writing, only return -EROFS if the disc appears to be readable but not writable. Signed-off-by:
Peter Osterlund <petero2@telia.com> Signed-off-by:
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Peter Osterlund authored
Fix the pkt_writable_track() function to make it work correctly for all types of CD/DVD discs. Signed-off-by:
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Peter Osterlund authored
Writing the detected disc type in the kernel log is not useful during normal use of the driver, so remove the printk statements. Signed-off-by:
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Peter Osterlund authored
Boolean functions should return non-zero when they mean "true", otherwise the calling code looks weird. (As suggested by Linus.) Signed-off-by:
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Peter Osterlund authored
It looks like the code in pkt_generic_packet() worked by luck in the past, but after commit 186d330e leaving rq->cmd_len uninitialized doesn't work any more. Signed-off-by:
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Juergen Kreileder authored
I'm getting oopses with snd-usb-audio in 32-bit compat environments: control_compat.c:get_ctl_type() doesn't initialize 'info', so 'itemlist[uinfo->value.enumerated.item]' in usbmixer.c:mixer_ctl_selector_info() might access random memory (The 'if ((int)uinfo->value.enumerated.item >= cval->max)' doesn't fix all problems because of the unsigned -> signed conversion.) Signed-off-by:
Juergen Kreileder <jk@blackdown.de> Cc: Jaroslav Kysela <perex@suse.cz> Acked-by:
Takashi Iwai <tiwai@suse.de> Cc: Greg KH <greg@kroah.com> Cc: <stable@kernel.org> Signed-off-by:
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Andi Kleen authored
maxnode is a bit index and can't be directly compared against a byte length like PAGE_SIZE Signed-off-by:
Andi Kleen <ak@suse.de> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by:
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Pavel Machek authored
Currently, acpi video options can only be set on kernel command line. That's little inflexible; I'd like userland s2ram application that just works, and modifying kernel command line according to whitelist is not fun. It is better to just allow s2ram application to set video options just before suspend (according to the whitelist). This implements sysctl to allow setting suspend video options without reboot. (akpm: Documentation updates for this new sysctl are pending..) Signed-off-by:
Pavel Machek <pavel@suse.cz> Cc: "Brown, Len" <len.brown@intel.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Heiko Carstens authored
Looks like there was a merge conflict when patches 8f8b1138 and 255acee7 were applied which wasn't properly resolved. Fix this and add some additional description. Signed-off-by:
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Andi Kleen authored
Undo setting of CONFIG_DEBUG_INFO in the previous defconfig update. It will make every build much slower and need more disk space and isn't a good default. Signed-off-by:
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Stephen Street authored
Fix two problems in the spi subsystem: 1) spi subsystem core dumps when modular spi master is unloaded. 2) spi subsystem core dumps when spi slave device is suspended/resumed and module slave driver is not loaded. Signed-off-by:
Stephen Street <stephen@streetfiresound.com> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Alexey Korolev authored
I found an issue in cfi_cmdset0001.c. It is related to cache region invalidation in the buffered write procedure. The code performs cache invalidation from "cmd_addr" to "cmd_adr + len" in do_write_buffer() while we modify region from "adr" to "adr+len". This issue affects writes + reads of data by small chunks. Signed-off-by:
Nicolas Pitre <nico@cam.org> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Daniel Yeisley authored
I'm seeing a kernel panic on an ES7000-600 when booting in virtual wire mode. The panic happens because smp_read_mpc() is passed a physical address, and it should be virtual. I tested the attached patch on the ES7000-600 and on a 2 cpu Dell box, and saw no problems on either. Signed-off-by:
Dan Yeisley <dan.yeisley@unisys.com> Acked-by:
Andi Kleen <ak@muc.de> Signed-off-by:
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Christoph Lameter authored
Some allocations are restricted to a limited set of nodes (due to memory policies or cpuset constraints). If the page allocator is not able to find enough memory then that does not mean that overall system memory is low. In particular going postal and more or less randomly shooting at processes is not likely going to help the situation but may just lead to suicide (the whole system coming down). It is better to signal to the process that no memory exists given the constraints that the process (or the configuration of the process) has placed on the allocation behavior. The process may be killed but then the sysadmin or developer can investigate the situation. The solution is similar to what we do when running out of hugepages. This patch adds a check before we kill processes. At that point performance considerations do not matter much so we just scan the zonelist and reconstruct a list of nodes. If the list of nodes does not contain all online nodes then this is a constrained allocation and we should kill the current process. Signed-off-by:
Christoph Lameter <clameter@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Kurt Garloff authored
In the badness() calculation, there's currently this piece of code: /* * Processes which fork a lot of child processes are likely * a good choice. We add the vmsize of the children if they * have an own mm. This prevents forking servers to flood the * machine with an endless amount of children */ list_for_each(tsk, &p->children) { struct task_struct *chld; chld = list_entry(tsk, struct task_struct, sibling); if (chld->mm = p->mm && chld->mm) points += chld->mm->total_vm; } The intention is clear: If some server (apache) keeps spawning new children and we run OOM, we want to kill the father rather than picking a child. This -- to some degree -- also helps a bit with getting fork bombs under control, though I'd consider this a desirable side-effect rather than a feature. There's one problem with this: No matter how many or few children there are, if just one of them misbehaves, and all others (including the father) do everything right, we still always kill the whole family. This hits in real life; whether it's javascript in konqueror resulting in kdeinit (and thus the whole KDE session) being hit or just a classical server that spawns children. Sidenote: The killer does kill all direct children as well, not only the selected father, see oom_kill_process(). The idea in attached patch is that we do want to account the memory consumption of the (direct) children to the father -- however not fully. This maintains the property that fathers with too many children will still very likely be picked, whereas a single misbehaving child has the chance to be picked by the OOM killer. In the patch I account only half (rounded up) of the children's vm_size to the parent. This means that if one child eats more mem than the rest of the family, it will be picked, otherwise it's still the father and thus the whole family that gets selected. This is heuristics -- we could debate whether accounting for a fourth would be better than for half of it. Or -- if people would consider it worth the trouble -- make it a sysctl. For now I sticked to accounting for half, which should IMHO be a significant improvement. The patch does one more thing: As users tend to be irritated by the choice of killed processes (mainly because the children are killed first, despite some of them having a very low OOM score), I added some more output: The selected (father) process will be reported first and it's oom_score printed to syslog. Description: Only account for half of children's vm size in oom score calculation This should still give the parent enough point in case of fork bombs. If any child however has more than 50% of the vm size of all children together, it'll get a higher score and be elected. This patch also makes the kernel display the oom_score. Signed-off-by:Kurt Garloff <garloff@suse.de> Cc: Rik van Riel <riel@redhat.com> Signed-off-by:
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- 20 Feb, 2006 3 commits
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Dave Jones authored
Signed-off-by:Dave Jones <davej@redhat.com>
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YOSHIFUJI Hideaki authored
Some of netfilter-related members are initalized / copied twice in skb_clone(). Remove one. Pointed out by Olivier MATZ <olivier.matz@6wind.com>. And this patch also fixes order of copying / clearing members. Signed-off-by:
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Patrick McHardy authored
When redirecting an outgoing packet to loopback, it keeps the original conntrack reference and information from the outgoing path, which falsely triggers the check for DNAT on input and the dst_entry is released to trigger rerouting. ip_route_input refuses to route the packet because it has a local source address and it is dropped. Look at the packet itself to dermine if it was NATed. Also fix a missing inversion that causes unneccesary xfrm lookups. Signed-off-by:
Patrick McHardy <kaber@trash.net> Signed-off-by:
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