| Commit message (Collapse) | Author | Age |
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For shared fifo hw endpoint(with FIFO_TXRX style), only ep_in
field of musb_hw_ep is intialized in musb_g_init_endpoints, and
ep_out is not initialized, but musb_g_rx and rxstate may access
ep_out field of musb_hw_ep by the method below:
musb_ep = &musb->endpoints[epnum].ep_out
which can cause the kernel panic[1] below, this patch fixes the issue
by getting 'musb_ep' from '&musb->endpoints[epnum].ep_in' for shared fifo
endpoint.
[1], kernel panic
[root@OMAP3EVM /]# musb_interrupt 1583: ** IRQ peripheral usb0008 tx0000 rx4000
musb_stage0_irq 460: <== Power=f0, DevCtl=99, int_usb=0x8
musb_g_rx 772: <== (null), rxcsr 4007 ffffffe8
musb_g_rx 786: iso overrun on ffffffe8
Unable to handle kernel NULL pointer dereference at virtual address 00000008
pgd = c0004000
[00000008] *pgd=00000000
Internal error: Oops: 17 [#1] PREEMPT
last sysfs file: /sys/devices/platform/musb_hdrc/usb1/usb_device/usbdev1.1/dev
Modules linked in: g_zero
CPU: 0 Tainted: G W (2.6.35-rc6-gkh-wl+ #92)
PC is at musb_g_rx+0xfc/0x2ec
LR is at vprintk+0x3f4/0x458
pc : [<c02c07a4>] lr : [<c006ccb0>] psr: 20000193
sp : c760bd78 ip : c03c9d70 fp : c760bdbc
r10: 00000000 r9 : fa0ab1e0 r8 : 0000000e
r7 : c7e80158 r6 : ffffffe8 r5 : 00000001 r4 : 00004003
r3 : 00010003 r2 : c760bcd8 r1 : c03cd030 r0 : 0000002e
Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c5387d Table: 8778c019 DAC: 00000017
Process kmemleak (pid: 421, stack limit = 0xc760a2e8)
Stack: (0xc760bd78 to 0xc760c000)
bd60: ffffffe8 c04b1b58
bd80: ffffffe8 c7c01ac0 00000000 c7e80d24 c0084238 00000001 00000001 c7e80158
bda0: 0000000e 00000008 00000099 000000f0 c760be04 c760bdc0 c02bcd68 c02c06b4
bdc0: 00000099 00000008 00004000 c760bdd8 c03cc4f8 00000000 00000002 c7e80158
bde0: c7d2e300 60000193 c760a000 0000005c 00000000 00000000 c760be24 c760be08
be00: c02bcecc c02bc1ac c7d2e300 c7d2e300 0000005c c760a000 c760be54 c760be28
be20: c00ad698 c02bce6c 00000000 c7d2e300 c067c258 0000005c c067c294 00000001
be40: c760a000 00000000 c760be74 c760be58 c00af984 c00ad5fc 0000005c 00000000
be60: 00000000 00000002 c760be8c c760be78 c0039080 c00af8d0 ffffffff fa200000
be80: c760beec c760be90 c0039b6c c003900c 00000001 00000000 c7d1e240 00000000
bea0: 00000000 c068bae8 00000000 60000013 00000001 00000000 00000000 c760beec
bec0: c0064ecc c760bed8 c00ff7d0 c003a0a8 60000013 ffffffff 00000000 c068bae8
bee0: c760bf24 c760bef0 c00ff7d0 c0064ec4 00000001 00000000 c00ff700 00000000
bf00: c0087f00 00000000 60000013 c0d76a70 c0e23795 00000001 c760bf4c c760bf28
bf20: c00ffdd8 c00ff70c c068bb08 c068bae8 60000013 c0100938 c068bb30 00000000
bf40: c760bf84 c760bf50 c010014c c00ffd84 00000001 00000000 c010000c 00012c00
bf60: c7c33f04 00012c00 c7c33f04 00000000 c0100938 00000000 c760bf9c c760bf88
bf80: c01009a8 c0100018 c760bfa8 c7c33f04 c760bff4 c760bfa0 c0088000 c0100944
bfa0: c760bf98 00000000 00000000 00000001 dead4ead ffffffff ffffffff c08ba2bc
bfc0: 00000000 c049e7fa 00000000 c0087f70 c760bfd0 c760bfd0 c7c33f04 c0087f70
bfe0: c006f5e8 00000013 00000000 c760bff8 c006f5e8 c0087f7c 7f0004ff df2000ff
Backtrace:
[<c02c06a8>] (musb_g_rx+0x0/0x2ec) from [<c02bcd68>] (musb_interrupt+0xbc8/0xcc0)
[<c02bc1a0>] (musb_interrupt+0x0/0xcc0) from [<c02bcecc>] (generic_interrupt+0x6c/0x84)
[<c02bce60>] (generic_interrupt+0x0/0x84) from [<c00ad698>] (handle_IRQ_event+0xa8/0x1ec)
r7:c760a000 r6:0000005c r5:c7d2e300 r4:c7d2e300
[<c00ad5f0>] (handle_IRQ_event+0x0/0x1ec) from [<c00af984>] (handle_level_irq+0xc0/0x13c)
[<c00af8c4>] (handle_level_irq+0x0/0x13c) from [<c0039080>] (asm_do_IRQ+0x80/0xa0)
r7:00000002 r6:00000000 r5:00000000 r4:0000005c
[<c0039000>] (asm_do_IRQ+0x0/0xa0) from [<c0039b6c>] (__irq_svc+0x4c/0xb4)
Exception stack(0xc760be90 to 0xc760bed8)
be80: 00000001 00000000 c7d1e240 00000000
bea0: 00000000 c068bae8 00000000 60000013 00000001 00000000 00000000 c760beec
bec0: c0064ecc c760bed8 c00ff7d0 c003a0a8 60000013 ffffffff
r5:fa200000 r4:ffffffff
[<c0064eb8>] (sub_preempt_count+0x0/0x100) from [<c00ff7d0>] (find_and_get_object+0xd0/0x110)
r5:c068bae8 r4:00000000
[<c00ff700>] (find_and_get_object+0x0/0x110) from [<c00ffdd8>] (scan_block+0x60/0x104)
r8:00000001 r7:c0e23795 r6:c0d76a70 r5:60000013 r4:00000000
[<c00ffd78>] (scan_block+0x0/0x104) from [<c010014c>] (kmemleak_scan+0x140/0x484)
[<c010000c>] (kmemleak_scan+0x0/0x484) from [<c01009a8>] (kmemleak_scan_thread+0x70/0xcc)
r8:00000000 r7:c0100938 r6:00000000 r5:c7c33f04 r4:00012c00
[<c0100938>] (kmemleak_scan_thread+0x0/0xcc) from [<c0088000>] (kthread+0x90/0x98)
r5:c7c33f04 r4:c760bfa8
[<c0087f70>] (kthread+0x0/0x98) from [<c006f5e8>] (do_exit+0x0/0x684)
r7:00000013 r6:c006f5e8 r5:c0087f70 r4:c7c33f04
Code: e3002312 e58d6000 e2833e16 eb0422d5 (e5963020)
---[ end trace f3d5e96f75c297b7 ]---
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Recent changes in the usbhid layer exposed a bug in usbcore. If
CONFIG_USB_DYNAMIC_MINORS is enabled then an interface may be assigned
a minor number of 0. However interfaces that aren't registered as USB
class devices also have their minor number set to 0, during
initialization. As a result usb_find_interface() may return the
wrong interface, leading to a crash.
This patch (as1418) fixes the problem by initializing every
interface's minor number to -1. It also cleans up the
usb_register_dev() function, which besides being somewhat awkwardly
written, does not unwind completely on all its error paths.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Philip J. Turmel <philip@turmel.org>
Tested-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Tested-by: Alex Riesen <raa.lkml@gmail.com>
Tested-by: Matthias Bayer <jackdachef@gmail.com>
CC: Jiri Kosina <jkosina@suse.cz>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
Staging: ti-st: remove st_get_plat_device
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In order to support multiple ST platform devices, a new symbol
'st_get_plat_device' earlier needed to be exported by the arch/XX/brd-XX.c
file which intends to add the ST platform device.
On removing this dependency, now inside ST driver maintain the array of
ST platform devices that would be registered.
As of now let id=0, as and when we end up having such platforms
where mutliple ST devices can exist, id would come from
protocol drivers (BT, FM and GPS) as to on which platform device
they want to register to.
Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Anca Emanuel <anca.emanuel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
vgaarb: trivial fix
drm: radeon cleanup fixes...
drm: fix trivial coding errors
drm: ttm sparse fixes.
drm/nouveau: fix panels using straps-based mode detection
drm/ttm: Clear the ghost cpu_writers flag on ttm_buffer_object_transfer.
drm/radeon: don't allow device to be opened if powered down
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Correct function being needlessly visible outside compilation unit
when the only users are internal.
Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Fix string interpreted as trigraph and typo.
Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Correct function storage class, and correct assignment type.
Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Correct allocation flags type and function prototype for ANSI C compliance.
[airlied: whitespace fixed]
Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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nouveau_bios_fp_mode() zeroes the mode struct before filling in relevant
entries. This nukes the mode id initialised by drm_mode_create(), and
causes warnings from idr when we try to remove the mode.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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It makes sense for a BO to move after a process has requested
exclusive RW access on it (e.g. because the BO used to be located in
unmappable VRAM and we intercepted the CPU access from the fault
handler).
If we let the ghost object inherit cpu_writers from the original
object, ttm_bo_release_list() will raise a kernel BUG when the ghost
object is destroyed. This can be reproduced with the nouveau driver on
nv5x.
Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Tested-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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If the switcheroo has switched the device off, don't let X open it.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It's a userland pointer; worse, an untrustable one since ptrace
has just provided a chance to modify it.
X-Roothole-Covering-Cabal: TINRCC
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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do_signal() should know about saved_mask for it to work...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Confirming page lock is held in hugetlb_add_anon_rmap() may be useful
to detect possible future problems.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The "if (!trylock_page)" block in the avoidcopy path of hugetlb_cow()
looks confusing and is buggy. Originally this trylock_page() was
intended to make sure that old_page is locked even when old_page !=
pagecache_page, because then only pagecache_page is locked.
This patch fixes it by moving page locking into hugetlb_fault().
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Obviously, setting anon_vma for COWed hugepage should be done
by hugepage_add_new_anon_rmap() to scan vmas faster.
This patch fixes it.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch applies Andrea's fix given by the following patch into hugepage
rmapping code:
commit 288468c334e98aacbb7e2fb8bde6bc1adcd55e05
Author: Andrea Arcangeli <aarcange@redhat.com>
Date: Mon Aug 9 17:19:09 2010 -0700
This patch uses anon_vma->root and avoids unnecessary overwriting when
anon_vma is already set up.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Fix reboot on Intel hosts
KVM: fix irqfd assign/deassign race
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When we reboot, we disable vmx extensions or otherwise INIT gets blocked.
If a task on another cpu hits a vmx instruction, it will fault if vmx is
disabled. We trap that to avoid a nasty oops and spin until the reboot
completes.
Problem is, we sleep with interrupts disabled. This blocks smp_send_stop()
from running, and the reboot process halts.
Fix by enabling interrupts before spinning.
KVM-Stable-Tag.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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I think I see the following (theoretical) race:
During irqfd assign, we drop irqfds lock before we
schedule inject work. Therefore, deassign running
on another CPU could cause shutdown and flush to run
before inject, causing user after free in inject.
A simple fix it to schedule inject under the lock.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
thinkpad-acpi: avoid keymap pitfall
Change MSI LAPTOP driver maintainer to Lee, Chun-Yi
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Change the code so that it will use the correct size for keymap entries.
Do it in a way that makes it harder to screw it up in the future.
Reported-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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Change MSI LAPTOP driver maintainer from Lennart Poettering to Lee, Chun-Yi.
MSI is a Taiwan OEM company, Lee, Chun-Yi can more easy to contact with MSI
and maintain msi-laptop driver.
Thank's for Lennart Poettering's contribute, Lee, Chun-Yi will base on his
article to continue maintain the msi-laptop driver.
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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Remove specification of HAVE_ARCH_TRACEHOOK for MN10300 as the arch does not
support it at this time.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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SIGRTMAX should be _NSIG not _NSIG-1.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The MN10300 arch ext2 bitops assume a big-endian kernel, but the MN10300
arch only runs in little-endian mode.
Reported-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: fix pcpu_last_unit_cpu
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pcpu_first/last_unit_cpu are used to track which cpu has the first and
last units assigned. This in turn is used to determine the span of a
chunk for man/unmap cache flushes and whether an address belongs to
the first chunk or not in per_cpu_ptr_to_phys().
When the number of possible CPUs isn't power of two, a chunk may
contain unassigned units towards the end of a chunk. The logic to
determine pcpu_last_unit_cpu was incorrect when there was an unused
unit at the end of a chunk. It failed to ignore the unused unit and
assigned the unused marker NR_CPUS to pcpu_last_unit_cpu.
This was discovered through kdump failure which was caused by
malfunctioning per_cpu_ptr_to_phys() on a kvm setup with 50 possible
CPUs by CAI Qian.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: CAI Qian <caiqian@redhat.com>
Cc: stable@kernel.org
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When modprobe.conf has
options ipmi_si type="kcs" ports=0xCA2 regspacings="4"
ipmi_si can be loaded properly, but when try to unload it get:
Sep 20 15:00:27 xx abrt: Kerneloops: Reported 1 kernel oopses to Abrt
Sep 20 15:00:27 xx abrtd: Directory 'kerneloops-1285020027-1' creation detected
Sep 20 15:00:27 xx abrtd: New crash /var/spool/abrt/kerneloops-1285020027-1, processing
Sep 20 15:01:09 xx kernel: ------------[ cut here ]------------
Sep 20 15:01:09 xx kernel: WARNING: at drivers/base/driver.c:262 driver_unregister+0x8a/0xa0()
Sep 20 15:01:09 xx kernel: Hardware name: Sun Fire x4800
Sep 20 15:01:09 xx kernel: Unexpected driver unregister!
Sep 20 15:01:09 xx kernel: Modules linked in: ipmi_si(-) ipmi_msghandler ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat bridge stp llc autofs4 sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf xt_physdev be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb3i iw_cxgb3 cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_mod vhost_net macvtap macvlan tun kvm_intel kvm uinput sg ses enclosure ahci libahci pcspkr i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support igb dca i7core_edac edac_core ext3 jbd mbcache sd_mod crc_t10dif megaraid_sas [last unloaded: ipmi_devintf]
Sep 20 15:01:09 xx kernel: Pid: 10625, comm: modprobe Tainted: G W 2.6.36-rc5-tip+ #6
Sep 20 15:01:09 xx kernel: Call Trace:
Sep 20 15:01:09 xx kernel: [<ffffffff810600df>] warn_slowpath_common+0x7f/0xc0
Sep 20 15:01:09 xx kernel: [<ffffffff810601d6>] warn_slowpath_fmt+0x46/0x50
Sep 20 15:01:09 xx kernel: [<ffffffff812ff60a>] driver_unregister+0x8a/0xa0
Sep 20 15:01:09 xx kernel: [<ffffffff812ae112>] pnp_unregister_driver+0x12/0x20
Sep 20 15:01:09 xx kernel: [<ffffffffa01d0327>] cleanup_ipmi_si+0x3c/0xa7 [ipmi_si]
Sep 20 15:01:09 xx kernel: [<ffffffff81099a60>] sys_delete_module+0x1a0/0x270
Sep 20 15:01:09 xx kernel: [<ffffffff814b7070>] ? do_page_fault+0x150/0x320
Sep 20 15:01:09 xx kernel: [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b
Sep 20 15:01:09 xx kernel: ---[ end trace 0d1967161adcee0d ]---
We need to check if ipmi_pnp_driver is loaded before we try to unload it.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This change resolves a problem about unbalanced calls of
enable_irq_wakeup() and disable_irq_wakeup() for alarm interrupt.
Bug reproduction:
root@eb600:~# echo 0 > /sys/class/rtc/rtc0/wakealarm
WARNING: at kernel/irq/manage.c:361 set_irq_wake+0x7c/0xe4()
Unbalanced IRQ 46 wake disable
Modules linked in:
[<c0025708>] (unwind_backtrace+0x0/0xd8) from [<c003358c>] (warn_slowpath_common+0x44/0x5c)
[<c003358c>] (warn_slowpath_common+0x44/0x5c) from [<c00335dc>] (warn_slowpath_fmt+0x24/0x30)
[<c00335dc>] (warn_slowpath_fmt+0x24/0x30) from [<c0058c20>] (set_irq_wake+0x7c/0xe4)
[<c0058c20>] (set_irq_wake+0x7c/0xe4) from [<c01b5e80>] (s3c_rtc_setalarm+0xa8/0xb8)
[<c01b5e80>] (s3c_rtc_setalarm+0xa8/0xb8) from [<c01b47a0>] (rtc_set_alarm+0x60/0x74)
[<c01b47a0>] (rtc_set_alarm+0x60/0x74) from [<c01b5a98>] (rtc_sysfs_set_wakealarm+0xc8/0xd8)
[<c01b5a98>] (rtc_sysfs_set_wakealarm+0xc8/0xd8) from [<c01891ec>] (dev_attr_store+0x20/0x24)
[<c01891ec>] (dev_attr_store+0x20/0x24) from [<c00be934>] (sysfs_write_file+0x104/0x13c)
[<c00be934>] (sysfs_write_file+0x104/0x13c) from [<c0080e7c>] (vfs_write+0xb0/0x158)
[<c0080e7c>] (vfs_write+0xb0/0x158) from [<c0080fcc>] (sys_write+0x3c/0x68)
[<c0080fcc>] (sys_write+0x3c/0x68) from [<c0020ec0>] (ret_fast_syscall+0x0/0x28)
Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Ben Dooks <ben@fluff.org.uk>
Cc: Atul Dahiya <atul.dahiya@samsung.com>
Cc: Taekgyun Ko <taeggyun.ko@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If __split_vma fails because of an out of memory condition the
anon_vma_chain isn't teardown and freed potentially leading to rmap walks
accessing freed vma information plus there's a memleak.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The below bug in fork led to the rmap walk finding the parent huge-pmd
twice instead of just once, because the anon_vma_chain objects of the
child vma still point to the vma->vm_mm of the parent.
The patch fixes it by making the rmap walk accurate during fork. It's not
a big deal normally but it worth being accurate considering the cost is
the same.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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drivers/pci/intel-iommu.c: In function `__iommu_calculate_agaw':
drivers/pci/intel-iommu.c:437: sorry, unimplemented: inlining failed in call to 'width_to_agaw': function body not available
drivers/pci/intel-iommu.c:445: sorry, unimplemented: called from here
Move the offending function (and its siblings) to top-of-file, remove the
forward declaration.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=17441
Reported-by: Martin Mokrejs <mmokrejs@ribosome.natur.cuni.cz>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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/proc/sys/vm/oom_dump_tasks is enabled by default, so it's necessary to
limit as much information as possible that it should emit.
The tasklist dump should be filtered to only those tasks that are eligible
for oom kill. This is already done for memcg ooms, but this patch extends
it to both cpuset and mempolicy ooms as well as init.
In addition to suppressing irrelevant information, this also reduces
confusion since users currently don't know which tasks in the tasklist
aren't eligible for kill (such as those attached to cpusets or bound to
mempolicies with a disjoint set of mems or nodes, respectively) since that
information is not shown.
Signed-off-by: David Rientjes <rientjes@google.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16 bytes
of uninitialized stack memory, because the "reserved" member of the
fb_vblank struct declared on the stack is not altered or zeroed before
being copied back to the user. This patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This fixes:
incompatible pointer type: => 89
arch/um/kernel/exec.c: warning: passing argument 2 of 'execve1' from
incompatible pointer type: => 69, 85
arch/um/kernel/exec.c: warning: passing argument 3 of 'execve1' from
incompatible pointer type: => 69, 85
which was introduced by d7627467b7a8d ("Make do_execve() take a const
filename pointer")
Signed-off-by: Richard Weinberger <richard@nod.at>
Cc: David Howells <dhowells@redhat.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently, /proc/<pid>/smaps has wrong dirty pages accounting.
Shared_Dirty and Private_Dirty output only pte dirty pages and ignore
PG_dirty page flag. It is difference against documentation, but also
inconsistent against Referenced field. (Referenced checks both pte and
page flags)
This patch fixes it.
Test program:
large-array.c
---------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
char array[1*1024*1024*1024L];
int main(void)
{
memset(array, 1, sizeof(array));
pause();
return 0;
}
---------------------------------------------------
Test case:
1. run ./large-array
2. cat /proc/`pidof large-array`/smaps
3. swapoff -a
4. cat /proc/`pidof large-array`/smaps again
Test result:
<before patch>
00601000-40601000 rw-p 00000000 00:00 0
Size: 1048576 kB
Rss: 1048576 kB
Pss: 1048576 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 218992 kB <-- showed pages as clean incorrectly
Private_Dirty: 829584 kB
Referenced: 388364 kB
Swap: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
<after patch>
00601000-40601000 rw-p 00000000 00:00 0
Size: 1048576 kB
Rss: 1048576 kB
Pss: 1048576 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 1048576 kB <-- fixed
Referenced: 388480 kB
Swap: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix the lockdep warning:
[ 13.657164] INFO: trying to register non-static key.
[ 13.657169] the code is fine but needs lockdep annotation.
[ 13.657171] turning off the locking correctness validator.
[ 13.657177] Pid: 622, comm: modprobe Not tainted 2.6.36-rc3c #8
[ 13.657180] Call Trace:
[ 13.657194] [<c13002c8>] ? printk+0x18/0x20
[ 13.657202] [<c1056cf6>] register_lock_class+0x336/0x350
[ 13.657208] [<c1058bf9>] __lock_acquire+0x449/0x1180
[ 13.657215] [<c1059997>] lock_acquire+0x67/0x80
[ 13.657222] [<c1042bf1>] ? __cancel_work_timer+0x51/0x230
[ 13.657227] [<c1042c23>] __cancel_work_timer+0x83/0x230
[ 13.657231] [<c1042bf1>] ? __cancel_work_timer+0x51/0x230
[ 13.657236] [<c10582b2>] ? mark_held_locks+0x62/0x80
[ 13.657243] [<c10b3a2f>] ? kfree+0x7f/0xe0
[ 13.657248] [<c105853c>] ? trace_hardirqs_on_caller+0x11c/0x160
[ 13.657253] [<c105858b>] ? trace_hardirqs_on+0xb/0x10
[ 13.657259] [<c117f4cd>] ? fbcon_deinit+0x16d/0x1e0
[ 13.657263] [<c117f4cd>] ? fbcon_deinit+0x16d/0x1e0
[ 13.657268] [<c1042dea>] cancel_work_sync+0xa/0x10
[ 13.657272] [<c117f444>] fbcon_deinit+0xe4/0x1e0
...
The warning is caused by trying to cancel an uninitialized work from
fbcon_exit(). Fix it by adding a check for queue.func, similarly to other
places in this code.
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Enable the EFI framebuffer on 14 more Macs, including the iMac11,1
iMac10,1 iMac8,1 Macmini3,1 Macmini4,1 MacBook5,1 MacBook6,1 MacBook7,1
MacBookPro2,2 MacBookPro5,2 MacBookPro5,3 MacBookPro6,1 MacBookPro6,2 and
MacBookPro7,1
Information gathered from various user submissions.
https://bugzilla.redhat.com/show_bug.cgi?id=528232
http://ubuntuforums.org/showthread.php?t=1557326
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Luke Macken <lmacken@redhat.com>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some Apple machines have identical DMI data but different memory
configurations for the video. Given that, check that the address in our
table is actually within the range of a PCI BAR on a VGA device in the
machine.
This also fixes up the return value from set_system(), which has always
been wrong, but never resulted in bad behavior since there's only ever
been one matching entry in the dmi table.
The patch
1) stops people's machines from crashing when we get their display wrong,
which seems to be unfortunately inevitable,
2) allows us to support identical dmi data with differing video memory
configurations
This also adds me as the efifb maintainer, since I've effectively been
acting as such for quite some time.
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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OCFS2 can return ERESTARTSYS from its write function when the process is
signalled while waiting for a cluster lock (and the filesystem is mounted
with intr mount option). Generally, it seems reasonable to allow
filesystems to return this error code from its IO functions. As we must
not leak ERESTARTSYS (and similar error codes) to userspace as a result of
an AIO operation, we have to properly convert it to EINTR inside AIO code
(restarting the syscall isn't really an option because other AIO could
have been already submitted by the same io_submit syscall).
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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M. Vefa Bicakci reported 2.6.35 kernel hang up when hibernation on his
32bit 3GB mem machine.
(https://bugzilla.kernel.org/show_bug.cgi?id=16771). Also he bisected
the regression to
commit bb21c7ce18eff8e6e7877ca1d06c6db719376e3c
Author: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Date: Fri Jun 4 14:15:05 2010 -0700
vmscan: fix do_try_to_free_pages() return value when priority==0 reclaim failure
At first impression, this seemed very strange because the above commit
only chenged function return value and hibernate_preallocate_memory()
ignore return value of shrink_all_memory(). But it's related.
Now, page allocation from hibernation code may enter infinite loop if the
system has highmem. The reasons are that vmscan don't care enough OOM
case when oom_killer_disabled.
The problem sequence is following as.
1. hibernation
2. oom_disable
3. alloc_pages
4. do_try_to_free_pages
if (scanning_global_lru(sc) && !all_unreclaimable)
return 1;
If kswapd is not freozen, it would set zone->all_unreclaimable to 1 and
then shrink_zones maybe return true(ie, all_unreclaimable is true). So at
last, alloc_pages could go to _nopage_. If it is, it should have no
problem.
This patch adds all_unreclaimable check to protect in direct reclaim path,
too. It can care of hibernation OOM case and help bailout
all_unreclaimable case slightly.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Reported-by: M. Vefa Bicakci <bicave@superonline.com>
Reported-by: <caiqian@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Tested-by: <caiqian@redhat.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ab3100_rtc_probe()
Otherwise, calling platform_get_drvdata() in ab3100_rtc_remove() returns
NULL.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by:Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alter the maintainer of the AVR32 architecture and the AVR32/AT32AP
machine support to me. Haavard is moving on to new challenges, and we've
found it better to transfer the maintainer part to me. I will have good
contact with Haavard anyway.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In an effort to minimize customer confusion we want to unify naming
convention for VMware-provided kernel modules. This change renames the
balloon driver from vmware_ballon to vmw_balloon.
We expect to follow this naming convention (vmw_<module_name>) for all
modules that are part of mainline kernel and/or being distributed by
VMware, with the sole exception of vmxnet3 driver (since the name of
mainline driver happens to match with the name used in VMware Tools).
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Acked-by: Bhavesh Davda <bhavesh@vmware.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This fixes the regression caused by the commit 6fee48cd330c68
("dma-mapping: arm: use generic pci_set_dma_mask and
pci_set_consistent_dma_mask").
ARM needs to clip the dma coherent mask for dmabounce devices. This
restores the old trick.
Note that strictly speaking, the DMA API doesn't allow architectures to do
such but I'm not sure it's worth adding the new API to set the dma mask
that allows architectures to clip it.
Reported-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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