[BC] ioprio: account for requests in driverPreviously we didn't take into account beancounter's requests that are
already in driver. Now we consider beancounter as empty
(no requests in it) only if there are no requests in CFQ _and_ in driver.
This patch improves fairness dramatically and fixes bug #81508
[SCHED] cleanup: removed unused variablestruct rq *rq was used before fairsched patch to compare
tasks with rq->idle. With fairsched idle task is bound to
pcpu, not vcpu and thus struct rq *rq is simply not needed.
[SCHED] Select some vcpu instead of idle even if all vcpus are hot We have to use oldest vcpu if all vcpu's are hot. In current kernel an idle_vcpu is used and CPU can idle instead of doing some job.Bug #79676
[CPT] restore rcv queue on netlink sockets and unbound netlink socketsCode restoring queues was forgotten. This fixes bug #79723.
Unbound sockets were restored incorrectly, they were outbound
to some post, which prevented subsequent bind by application.
This fixes bug #79724.
The patch overrides previous patch with subj:
"[CPT] restore rcv queue on netlink sockets", which fixed only bug #79723.
[CPT] retry checkpointing if VE has active netlink callbackReturn -EAGAIN instead of -EBUSY if netlink socket has active callback.
In this case we will try to freeze VE 3 times.
From 2.6.18-rh5
[CPT] thread groups with exited leader did not migrateThe bug is simple and stupid, it is very strange nobody saw this.
When thread group leader exits, its mm/files/fs/namespace are released
but zombie process remain frozen until all the threads exit.
Restore was not able to restore such configuration.
Solution is simple: when chackpointing save not real (NULL)
mm/files/fs/namespace, but mm/files/fs/namespace of this thread group.
[VZDQ] prohibit chown of a file if owner doesn't have ugid structProhibit chown a file if its owner does not have
ugid record. This might happen if we somehow exceeded
the UID/GID (e.g. set ugidlimit less than number of users).
Bug #79553
[NETLINK] VE netlink message should go into VE logWhen parsing netlink arguments kernel may printk that some bytes left
unparsed. Make this info appear in VE log, instead of global one.
[MEMINFO] sysctl for selecting UsedMem sourceAdds sysctl to choose base ubc parameter for memory usage inside a VE.
Sets PRIVVMPAGES beancounter to be used by default instead of OOMGUARPAGES.
Bug #78088
[IOPRIO] forced dispatching when CONFIG_UBC_IO_PRIO offIf CONFIG_UBC_IO_PRIO is off, then no beancounters are in active list,
consequently we have a bug in forced dispatching case.
http://bugzilla.openvz.org/show_bug.cgi?id=528
[IOPRIO] Oops on IO-prioritization disablingIf io-prioritization is suddenly turned off via
/sys/block/<dev>/queue/iosched/virt_mode cfqq owner BC does not equal
current io context. It is right to get beancounter obtained from queue,
but not from current IO context.
[NETLINK] Fix for Alexey's netlink lookup recursion fixWhen CONFIG_IP_MULTIPLE_TABLES is enabled, the code in nl_fib_lookup()
needs to initialize the res.r field before fib_res_put(&res) - unlike
fib_lookup(), a direct call to ->tb_lookup does not set this field.
[PATCH] stack overflow in netlink (mainstream) !!! Exploitable from VE !!!
Reply to NETLINK_FIB_LOOKUP messages were misrouted back to kernel,
which resulted in infinite recursion and stack overflow.
The bug is present in all kernel versions since the feature appeared.
(linux 2.6.13, Jun 20th, 2005,
commit 246955fe4c38bd706ae30e37c64892c94213775d,
[NETLINK]: fib_lookup() via netlink)
The patch also makes some minimal cleanup:
1. R...
[PATCH] Invalid return value of execve() resulting in oopses (mainstream)When elf loader fails to map executable (due to memory shortage
or because binary is malformed), it can return 0. Normally, this is invisible
because process is killed with SIGKILL and it never returns to user space.
But if exec() is called from kernel thread (hotplug, whatever) consequences
are more interesting and vary depending on architecture.
i386. Nothing especially interesting, execve(...
[PATCH] Make speedstep centrino cpufreq driver use wr/rdmsr_on_cpu()speedstep-centrino cpufreq driver was using set_cpus_allowed() and
checks for smp_processor_id() to confine itself to given CPU.
In presence of VCPU freature this doesn't work.
Switch to rdmsr_on_cpu/wrmsr_on_cpu() infrastructure.
Closes http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=420708
[CPT] tux is missing on vanilla kernelsTaken from 2.6.18 kernel:
Compilation bug was introduced by
http://git.openvz.org/?p=linux-2.6.18-openvz;a=commitdiff;h=f90c2c318467829ecde43919ad38f326527f533b
fixes
http://bugzilla.openvz.org/show_bug.cgi?id=545
[CPT] Compiltaion fixes for check_utrace()This call is about to be in after utrace is merged, but right
now we don't have one. Compile it out.
http://bugzilla.openvz.org/show_bug.cgi?id=549
[BC] fix make oldconfig for sparc64 archThis is a hunk that was forgotten in commit ab1011203e9e5a72bc741496052fe46123933712
and done wrong in commit d37f2e1187f6587bd76719612a15b4b2b68e1e87.
It fixes the following issue:
scripts/kconfig/conf -o arch/sparc64/Kconfig
arch/sparc64/Kconfig:460: can't open file "kernel/ub/Kconfig"
[NMI] Set correct default watchdog type in case of CONFIG_NMI_WATCHDOG=yOne of previous patches was a little bit incorrect. It declared NMI_DEFAULT as NMI_IO_APIC in
case of CONFIG_NMI_WATCHDOG=y. But NMI_DEFAULT type has special meaning and it mustn't be
mixed with any other types or we'll get wrong driver logic - in our case we initialazed wdog
as NMI_IO_APIC, and switched it's type to NMI_LOCAL_APIC in check_nmi_watchdog().
(#78179)
[VZDQ] Don't call sleeping operations under inode_lockThe calltrace
vzdq_aquotq_lookup
iget5_locked()
get_new_inode()
`- spin_lock(&inode_lock);
find_inode()
->set() /* == vzdq_aquotq_lookset */
vdq_aquot_lookset()
user_get_super()
`- down_read(...)
is bad as it may sleep with inode_lock taken.
Move all the sleeping operations out of this lock.
(#79124)
[PATCH] GEODE-AES: Allow in-place operations [CVE-2007-2451]Allow in-place crypto operations. Also remove the coherent user flag
(we use it automagically now), and by default use the user written
key rather then the HW hidden key - this makes crypto just work without
any special considerations, and thats OK, since its our only usage
model.
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Sign...
Revert "adjust legacy IDE resource setting (v2)"Revert "adjust legacy IDE resource setting (v2)"
This reverts commit ed8ccee0918ad063a4741c0656fda783e02df627.
It causes hang on boot for some users and we don't yet know why:
http://bugzilla.kernel.org/show_bug.cgi?id=7562
http://lkml.org/lkml/2007/4/20/404
http://lkml.org/lkml/2007/3/25/113
Just reverse it for 2.6.21-final, having broken X server is somehow
better than unbootable system....
cfq-iosched: fix alias + front merge bugThere's a really rare and obscure bug in CFQ, that causes a crash in
cfq_dispatch_insert() due to rq == NULL. One example of that is seen
here:
http://lkml.org/lkml/2007/4/15/41
Neil correctly diagnosed the situation for how this can happen, read
that analysis here:
http://lkml.org/lkml/2007/4/25/57
This looks like it requires md to trigger, even though it should
potentially be possible to ...
AGPGART: intel_agp: fix G965 GTT size detect[AGPGART] intel_agp: fix G965 GTT size detect
On G965, I810_PGETBL_CTL is a mmio offset, but we wrongly take it
as pci config space offset in detecting GTT size. This one line patch
fixs this.
Signed-off-by: Wang Zhenyu <zhenyu.z.wang@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hwmon/w83627ehf: Fix the fan5 clock divider writeUsers have been complaining about the w83627ehf driver flooding their
logs with debug messages like:
w83627ehf 9191-0a10: Increasing fan 4 clock divider from 64 to 128
or:
w83627ehf 9191-0290: Increasing fan 4 clock divider from 4 to 8
The reason is that we failed to actually write the LSB of the encoded
clock divider value for that fan, causing the next read to report the
same old value ag...
reiserfs: fix xattr root locking/refcount bugThe listxattr() and getxattr() operations are only protected by a read
lock. As a result, if either of these operations run in parallel, a race
condition exists where the xattr_root will end up being cached twice, which
results in the leaking of a reference and a BUG() on umount.
This patch refactors get_xa_root(), __get_xa_root(), and create_xa_root(),
into one get_xa_root() function that ta...
Taskstats fix the structure members alignment issueWe broke the the alignment of members of taskstats to the 8 byte boundary
with the CSA patches. In the current kernel, the taskstats structure is
not suitable for use by 32 bit applications in a 64 bit kernel.
On x86_64
Offsets of taskstats' members (64 bit kernel, 64 bit application)
@taskstats'offsetof[@taskstats'indices] = (
0, # version
4, # ac_exitcode
...
page migration: fix NR_FILE_PAGES accountingNR_FILE_PAGES must be accounted for depending on the zone that the page
belongs to. If we replace the page in the radix tree then we may have to
shift the count to another zone.
Suggested-by: Ethan Solomita <solo@google.com>
Cc: Martin Bligh <mbligh@mbligh.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroa...
Fix possible NULL pointer access in 8250 serial driverI encountered the following kernel panic. The cause of this problem was
NULL pointer access in check_modem_status() in 8250.c. I confirmed this
problem is fixed by the attached patch, but I don't know this is the
correct fix.
sadc[4378]: NaT consumption 2216203124768 [1]
Modules linked in: binfmt_misc dm_mirror dm_mod thermal processor fan
container button sg e100 eepro100 mii ehci_hcd ohci_...
fix OOM killing processes wrongly thought MPOL_BINDI only have CONFIG_NUMA=y for build testing: surprised when trying a memhog
to see lots of other processes killed with "No available memory
(MPOL_BIND)". memhog is killed correctly once we initialize nodemask in
constrained_alloc().
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Acked-by: William Irwin <bill.irwin@oracle.com>
Acked-by: KAMEZAWA H...
fix bogon in /dev/mem mmap'ing on nommuWhile digging through my MAP_FIXED changes, I found that rather obvious
bug in /dev/mem mmap implementation for nommu archs. get_unmapped_area()
is expected to return an address, not a pfn.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...
OpenVZ team
Chris Wright
Greg Kroah-Hartman
