Mel Gorman 8e76d4eecf sched, numa: do not hint for NUMA balancing on VM_MIXEDMAP mappings ... Jovi Zhangwei reported the following problem Below kernel vm bug can be triggered by tcpdump which mmaped a lot of pages with GFP_COMP flag. [Mon May 25 05:29:33 2015] page:ffffea0015414000 count:66 mapcount:1 mapping: (null) index:0x0 [Mon May 25 05:29:33 2015] flags: 0x20047580004000(head) [Mon May 25 05:29:33 2015] page dumped because: VM_BUG_ON_PAGE(compound_order(page) && !PageTransHuge(page)) [Mon May 25 05:29:33 2015] ------------[ cut here ]------------ [Mon May 25 05:29:33 2015] kernel BUG at mm/migrate.c:1661! [Mon May 25 05:29:33 2015] invalid opcode: 0000 [#1] SMP In this case it was triggered by running tcpdump but it's not necessary reproducible on all systems. sudo tcpdump -i bond0.100 'tcp port 4242' -c 100000000000 -w 4242.pcap Compound pages cannot be migrated and it was not expected that such pages be marked for NUMA balancing. This did not take into account that drivers such as net/packet/af_packet.c may insert compound pages into userspace with vm_insert_page. This patch tells the NUMA balancing protection scanner to skip all VM_MIXEDMAP mappings which avoids the possibility that compound pages are marked for migration. Signed-off-by: Mel Gorman <mgorman@suse.de> Reported-by: Jovi Zhangwei <jovi@cloudflare.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-06-10 16:43:43 -07:00
..
bpf	bpf: fix 64-bit divide	2015-04-27 23:11:49 -04:00
configs	…
debug	debug: prevent entering debug mode on panic/exception.	2015-02-19 12:39:03 -06:00
events	perf: Disallow sparse AUX allocations for non-SG PMUs in overwrite mode	2015-05-27 09:16:20 +02:00
gcov	gcov: fix softlockups	2015-04-17 09:04:08 -04:00
irq	genirq: Set IRQCHIP_SKIP_SET_WAKE flag for dummy_irq_chip	2015-04-24 20:57:06 +02:00
livepatch	Merge branch 'for-4.1/core-noarch' into for-linus	2015-04-13 23:57:20 +02:00
locking	sched: Handle priority boosted tasks proper in setscheduler()	2015-05-08 11:53:55 +02:00
power	Merge back earlier suspend/hibernate material for v4.1.	2015-04-10 12:01:59 +02:00
printk	TTY/Serial patches for 4.1-rc1	2015-04-21 09:33:10 -07:00
rcu	rcu: Control grace-period delays directly from value	2015-04-14 19:33:59 -07:00
sched	sched, numa: do not hint for NUMA balancing on VM_MIXEDMAP mappings	2015-06-10 16:43:43 -07:00
time	ktime: Fix ktime_divns to do signed division	2015-05-13 10:19:35 +02:00
trace	tracing: Make ftrace_print_array_seq compute buf_len	2015-05-06 23:03:23 -04:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	locking/mcs: Better differentiate between MCS variants	2015-01-14 15:07:32 +01:00
Kconfig.preempt	…
Makefile	modsign: change default key details	2015-04-30 09:35:41 -07:00
acct.c	acct: check FMODE_CAN_WRITE	2015-04-11 22:27:55 -04:00
async.c	kernel/async.c: switch to pr_foo()	2014-10-09 22:26:04 -04:00
audit.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
audit.h	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-04-22 14:49:23 -07:00
audit_tree.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
audit_watch.c	VFS: audit: d_backing_inode() annotations	2015-04-15 15:06:55 -04:00
auditfilter.c	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-02-11 20:07:47 -08:00
auditsc.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
backtracetest.c	…
bounds.c	…
capability.c	kernel: conditionally support non-root users, groups and capabilities	2015-04-15 16:35:22 -07:00
cgroup.c	cgroup: remove use of seq_printf return value	2015-04-15 16:35:25 -07:00
cgroup_freezer.c	…
compat.c	compat: cleanup coding in compat_get_bitmap() and compat_put_bitmap()	2015-06-04 23:57:18 +02:00
configs.c	…
context_tracking.c	context_tracking: Export context_tracking_user_enter/exit	2015-03-09 15:43:00 +01:00
cpu.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-14 13:36:04 -07:00
cpu_pm.c	…
cpuset.c	kernel, cpuset: remove exception for __GFP_THISNODE	2015-04-14 16:49:03 -07:00
crash_dump.c	…
cred.c	kernel: conditionally support non-root users, groups and capabilities	2015-04-15 16:35:22 -07:00
delayacct.c	…
dma.c	…
elfcore.c	…
exec_domain.c	Remove rest of exec domains.	2015-04-12 21:03:31 +02:00
exit.c	Remove execution domain support	2015-04-12 20:58:24 +02:00
extable.c	ftrace/x86/extable: Add is_ftrace_trampoline() function	2014-11-19 15:25:26 -05:00
fork.c	oprofile: reduce mmap_sem hold for mm->exe_file	2015-04-17 09:04:11 -04:00
freezer.c	freezer: remove obsolete comments in __thaw_task()	2014-10-21 23:44:20 +02:00
futex.c	Linux 34.0-rc1	2015-02-24 08:41:07 +01:00
futex_compat.c	…
groups.c	kernel: conditionally support non-root users, groups and capabilities	2015-04-15 16:35:22 -07:00
hung_task.c	kernel/hung_task.c: change hung_task.c to use for_each_process_thread()	2015-04-15 16:35:22 -07:00
irq_work.c	percpu: Convert remaining __get_cpu_var uses in 3.18-rcX	2014-10-29 11:18:18 -04:00
jump_label.c	…
kallsyms.c	kernel/kallsyms.c: use __seq_open_private()	2014-10-14 02:18:16 +02:00
kcmp.c	…
kexec.c	kexec: allocate the kexec control page with KEXEC_CONTROL_MEMORY_GFP	2015-04-23 16:52:01 +02:00
kmod.c	usermodehelper: kill the kmod_thread_locker logic	2014-12-10 17:41:17 -08:00
kprobes.c	kprobes: makes kprobes/enabled works correctly for optimized kprobes.	2015-02-13 21:21:42 -08:00
ksysfs.c	…
kthread.c	kernel/kthread.c: partial revert of 81c98869fa ("kthread: ensure locality of task_struct allocations")	2014-10-09 22:25:51 -04:00
latencytop.c	…
module-internal.h	…
module.c	module: Call module notifier on failure after complete_formation()	2015-05-09 03:29:24 +09:30
module_signing.c	…
notifier.c	rcu: Make SRCU optional by using CONFIG_SRCU	2015-01-06 11:04:29 -08:00
nsproxy.c	bury struct proc_ns in fs/proc	2014-12-04 14:34:54 -05:00
padata.c	padata: use %*pb[l] to print bitmaps including cpumasks and nodemasks	2015-02-13 21:21:38 -08:00
panic.c	livepatch: kernel: add TAINT_LIVEPATCH	2014-12-22 15:40:48 +01:00
params.c	params: handle quotes properly for values not of form foo="bar".	2015-04-15 13:31:23 +09:30
pid.c	fork: report pid reservation failure properly	2015-04-17 09:04:06 -04:00
pid_namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-12-16 15:53:03 -08:00
profile.c	profile: use %*pb[l] to print bitmaps including cpumasks and nodemasks	2015-02-13 21:21:38 -08:00
ptrace.c	ptrace: ptrace_detach() can no longer race with SIGKILL	2015-04-17 09:04:06 -04:00
range.c	kernel: avoid overflow in cmp_range	2015-01-17 10:02:23 +13:00
reboot.c	kernel/reboot.c: add orderly_reboot for graceful reboot	2015-04-15 16:35:23 -07:00
relay.c	VFS: kernel/: d_inode() annotations	2015-04-15 15:06:55 -04:00
resource.c	kernel/resource.c: remove deprecated __check_region() and friends	2015-04-15 16:35:22 -07:00
seccomp.c	seccomp: cap SECCOMP_RET_ERRNO data to MAX_ERRNO	2015-02-17 14:34:55 -08:00
signal.c	signal: remove warning about using SI_TKILL in rt_[tg]sigqueueinfo	2015-04-17 09:04:06 -04:00
smp.c	smp: Fix error case handling in smp_call_function_*()	2015-04-19 13:19:23 -07:00
smpboot.c	smpboot: Add common code for notification from dying CPU	2015-03-11 13:20:25 -07:00
smpboot.h	…
softirq.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-09 15:24:03 -08:00
stacktrace.c	stacktrace: introduce snprint_stack_trace for buffer output	2014-12-13 12:42:48 -08:00
stop_machine.c	…
sys.c	prctl: avoid using mmap_sem for exe_file serialization	2015-04-17 09:04:07 -04:00
sys_ni.c	kernel: conditionally support non-root users, groups and capabilities	2015-04-15 16:35:22 -07:00
sysctl.c	kernel/sysctl.c: detect overflows when converting to int	2015-04-17 09:04:08 -04:00
sysctl_binary.c	kernel: add panic_on_warn	2014-12-10 17:41:10 -08:00
system_certificates.S	…
system_keyring.c	…
task_work.c	…
taskstats.c	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
test_kprobes.c	…
torture.c	…
tracepoint.c	…
tsacct.c	…
uid16.c	groups: Consolidate the setgroups permission checks	2014-12-05 17:19:27 -06:00
up.c	…
user-return-notifier.c	…
user.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2014-12-17 12:31:40 -08:00
user_namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2014-12-17 12:31:40 -08:00
utsname.c	copy address of proc_ns_ops into ns_common	2014-12-04 14:34:47 -05:00
utsname_sysctl.c	…
watchdog.c	watchdog: fix double lock in watchdog_nmi_enable_all	2015-05-19 10:57:03 -07:00
workqueue.c	workqueue: Reorder sysfs code	2015-04-06 11:16:04 -04:00
workqueue_internal.h	…