Sakari Ailus e0377e2520 lguest: Do not exit on non-fatal errors ... Do not exit on some non-fatal errors: - writev() fails in net_output(). The result is a lost packet or packets. - writev() fails in console_output(). The result is partially lost console output. - readv() fails in net_input(). The result is a lost packet or packets. Rather than bringing the guest down, this patch ignores e.g. an allocation failure on the host side. Example: lguest: page allocation failure. order:4, mode:0x4d0 Pid: 4045, comm: lguest Tainted: G W 2.6.36 #1 Call Trace: [<c138d614>] ? printk+0x18/0x1c [<c106a4e2>] __alloc_pages_nodemask+0x4d2/0x570 [<c1087954>] cache_alloc_refill+0x2a4/0x4d0 [<c1305149>] ? __netif_receive_skb+0x189/0x270 [<c1087c5a>] __kmalloc+0xda/0xf0 [<c12fffa5>] __alloc_skb+0x55/0x100 [<c1305519>] ? net_rx_action+0x79/0x100 [<c12fafed>] sock_alloc_send_pskb+0x18d/0x280 [<c11fda25>] ? _copy_from_user+0x35/0x130 [<c13010b6>] ? memcpy_fromiovecend+0x56/0x80 [<c12a74dc>] tun_chr_aio_write+0x1cc/0x500 [<c108a125>] do_sync_readv_writev+0x95/0xd0 [<c11fda25>] ? _copy_from_user+0x35/0x130 [<c1089fa8>] ? rw_copy_check_uvector+0x58/0x100 [<c108a7bc>] do_readv_writev+0x9c/0x1d0 [<c12a7310>] ? tun_chr_aio_write+0x0/0x500 [<c108a93a>] vfs_writev+0x4a/0x60 [<c108aa21>] sys_writev+0x41/0x80 [<c138f061>] syscall_call+0x7/0xb Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 Normal per-cpu: CPU 0: hi: 186, btch: 31 usd: 0 HighMem per-cpu: CPU 0: hi: 186, btch: 31 usd: 0 active_anon:134651 inactive_anon:50543 isolated_anon:0 active_file:96881 inactive_file:132007 isolated_file:0 unevictable:0 dirty:3 writeback:0 unstable:0 free:91374 slab_reclaimable:6300 slab_unreclaimable:2802 mapped:2281 shmem:9 pagetables:330 bounce:0 DMA free:3524kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:8kB active_file:8760kB inactive_file:2760kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15868kB mlocked:0kB dirty:0kB writeback:0kB mapped:16kB shmem:0kB slab_reclaimable:88kB slab_unreclaimable:148kB kernel_stack:40kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 865 2016 2016 Normal free:150100kB min:3728kB low:4660kB high:5592kB active_anon:6224kB inactive_anon:15772kB active_file:324084kB inactive_file:325944kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:885944kB mlocked:0kB dirty:12kB writeback:0kB mapped:1520kB shmem:0kB slab_reclaimable:25112kB slab_unreclaimable:11060kB kernel_stack:1888kB pagetables:1320kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 9207 9207 HighMem free:211872kB min:512kB low:1752kB high:2992kB active_anon:532380kB inactive_anon:186392kB active_file:54680kB inactive_file:199324kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:1178504kB mlocked:0kB dirty:0kB writeback:0kB mapped:7588kB shmem:36kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 3*4kB 65*8kB 35*16kB 18*32kB 11*64kB 9*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3524kB Normal: 35981*4kB 344*8kB 158*16kB 28*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 150100kB HighMem: 5732*4kB 5462*8kB 2826*16kB 1598*32kB 84*64kB 10*128kB 7*256kB 1*512kB 1*1024kB 1*2048kB 9*4096kB = 211872kB 231237 total pagecache pages 2340 pages in swap cache Swap cache stats: add 160060, delete 157720, find 189017/194106 Free swap = 4179840kB Total swap = 4194300kB 524271 pages RAM 296946 pages HighMem 5668 pages reserved 867664 pages shared 82155 pages non-shared Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>		2011-07-22 14:39:48 +09:30
..
ABI	backlight: new driver for the ADP8870 backlight devices	2011-06-15 20:03:59 -07:00
accounting	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
acpi	ACPI: Split out custom_method functionality into an own driver	2011-05-29 01:50:40 -04:00
aoe
arm	Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable	2011-05-25 21:47:48 +01:00
auxdisplay
blackfin
block
blockdev	cciss: add cciss_tape_cmds module paramter	2011-05-06 08:23:59 -06:00
cdrom
cgroups	Documentation: fix cgroup blkio throttle filenames	2011-07-06 13:17:51 -07:00
connector
console
cpu-freq
cpuidle
cris
crypto
development-process
device-mapper
devicetree	Merge branches 'devel', 'devel-stable' and 'fixes' into for-linus	2011-05-27 22:59:57 +01:00
DocBook	Merge git://git.infradead.org/mtd-2.6	2011-05-27 20:06:53 -07:00
driver-model	driver core: remove the driver-model structures from the documentation	2011-05-06 18:01:05 -07:00
dvb
early-userspace
fault-injection
fb
filesystems	nilfs2: remove resize from unsupported features list	2011-07-13 16:08:59 +09:00
firmware_class
frv
hid
hwmon	hwmon: (k10temp) Update documentation for Fam12h	2011-07-03 13:32:54 +02:00
i2c	i2c-i801: SMBus patch for Intel Panther Point DeviceIDs	2011-05-24 20:58:49 +02:00
i2o
ia64
ide
infiniband
input	Input: elantech - describe further the protocol	2011-05-16 22:48:24 -07:00
ioctl	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc	2011-05-25 16:55:55 -07:00
isdn
ja_JP
kbuild	Merge branch 'kconfig-for-40' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6	2011-05-25 16:54:01 -07:00
kdump
ko_KR
laptops	thinkpad-acpi: handle HKEY 0x4010, 0x4011 events	2011-07-07 10:39:05 -04:00
leds
m68k
make
mips
misc-devices
mmc	mmc: MMC boot partitions support.	2011-05-24 21:01:21 -04:00
mn10300
mtd
namespaces
netlabel
networking	net: Fix default in docs for tcp_orphan_retries.	2011-07-08 09:31:31 -07:00
nfc
parisc
PCI
pcmcia
power	PM / Runtime: Update documentation regarding driver removal	2011-07-02 14:27:11 +02:00
powerpc
pps
prctl
pti	Kernel documentation for the PTI feature.	2011-05-13 16:31:00 -07:00
ptp	ptp: Added a brand new class driver for ptp clocks.	2011-05-23 13:01:00 -07:00
rapidio
RCU	rcu: Decrease memory-barrier usage based on semi-formal proof	2011-05-26 09:42:23 -07:00
s390
scheduler	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
scsi	[SCSI] megaraid_sas: Version and Changelog update	2011-05-24 12:36:06 -04:00
security	Create Documentation/security/,	2011-05-19 15:59:38 -07:00
serial
sh
sound	Merge branch 'topic/hda' into for-linus	2011-05-22 10:01:35 +02:00
sparc
spi
sysctl	coredump: add support for exe_file in core name	2011-05-26 17:12:36 -07:00
target
telephony
thermal
timers	doc: timers-howto: fix a typo ("unsgined")	2011-05-17 10:52:02 +02:00
trace	sched: Get rid of lock_depth	2011-04-24 13:18:38 +02:00
usb	USB: Fix up URB error codes to reflect implementation.	2011-06-17 11:28:21 -07:00
video4linux	[media] uvcvideo: Add driver documentation	2011-05-20 09:30:36 -03:00
virtual	lguest: Do not exit on non-fatal errors	2011-07-22 14:39:48 +09:30
vm	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
w1
watchdog
wimax
x86	x86, doc only: Correct real-mode kernel header offset for init_size	2011-07-12 20:39:11 -07:00
zh_CN	Translated Documentation/email-clients.txt	2011-05-06 17:59:20 -07:00
.gitignore
00-INDEX	Merge branch 'docs-security' into docs-move	2011-05-20 09:10:04 -07:00
applying-patches.txt
atomic_ops.txt	Documentation/atomic_ops.txt: avoid volatile in sample code	2011-05-26 17:12:34 -07:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt	mm: convert mm->cpu_vm_cpumask into cpumask_var_t	2011-05-25 08:39:21 -07:00
Changes	Documentation/Changes: remove some really obsolete text	2011-07-11 16:48:38 -07:00
circular-buffers.txt
coccinelle.txt
CodingStyle	Documentation: update CodingStyle memory allocators	2011-07-06 13:17:51 -07:00
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt
DMA-ISA-LPC.txt
dmaengine.txt	dmaengine: Add API documentation for slave dma usage	2011-05-25 14:49:20 -07:00
dontdiff	Documentation: update dontdiff file	2011-05-23 15:14:11 -07:00
dynamic-debug-howto.txt
edac.txt
eisa.txt
email-clients.txt
feature-removal-schedule.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2011-07-11 16:43:27 -07:00
flexible-arrays.txt	flex_array: flex_array_prealloc takes a number of elements, not an end	2011-04-28 16:12:47 -04:00
futex-requeue-pi.txt
gcov.txt
gpio.txt
highuid.txt
HOWTO	Documentation: update LXR web link	2011-05-23 15:14:11 -07:00
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
Intel-IOMMU.txt
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
IPMI.txt
IRQ-affinity.txt	bitmap, irq: add smp_affinity_list interface to /proc/irq	2011-05-25 08:39:45 -07:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt	PCI: conditional resource-reallocation through kernel parameter pci=realloc	2011-07-08 15:49:20 -07:00
kmemcheck.txt
kmemleak.txt	Documentation: update kmemleak supported archs	2011-06-15 21:52:50 -07:00
kobject.txt
kprobes.txt
kref.txt
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt	Documentation: Add statistics about nested locks	2011-05-28 17:03:29 +02:00
logo.gif
logo.txt
magic-number.txt
Makefile
ManagementStyle
mca.txt
md.txt	md:Documentation/md.txt - fix typo	2011-06-09 11:43:04 +10:00
media-framework.txt
memory-barriers.txt
memory-hotplug.txt
memory.txt
mono.txt
mutex-design.txt
nmi_watchdog.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt
preempt-locking.txt
printk-formats.txt	Documentation: update printk-formats.txt	2011-06-15 21:52:50 -07:00
prio_tree.txt
rbtree.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rt-mutex-design.txt
rt-mutex.txt
rtc.txt
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
sparse.txt
spinlocks.txt	Documentation/spinlocks.txt: Remove reference to sti()/cli()	2011-07-11 12:45:04 -07:00
stable_api_nonsense.txt
stable_kernel_rules.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches	Documentation: update GregKH links	2011-05-23 15:14:11 -07:00
svga.txt
sysfs-rules.txt
sysrq.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt	Documentation: fix vgaarbiter.txt typos etc.	2011-05-23 15:14:11 -07:00
video-output.txt
volatile-considered-harmful.txt
workqueue.txt
xz.txt
zorro.txt