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Nadav Amit 49f17c26c1 resource: fix locking in find_next_iomem_res() 
Since resources can be removed, locking should ensure that the resource
is not removed while accessing it.  However, find_next_iomem_res() does
not hold the lock while copying the data of the resource.

Keep holding the lock while the data is copied.  While at it, change the
return value to a more informative value.  It is disregarded by the
callers.

[akpm@linux-foundation.org: fix find_next_iomem_res() documentation]
Link: http://lkml.kernel.org/r/20190613045903.4922-2-namit@vmware.com
Fixes: ff3cc952d3 ("resource: Add remove_resource interface")
Signed-off-by: Nadav Amit <namit@vmware.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-18 17:08:06 -07:00
..
bpf
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2019-07-11 10:55:49 -07:00
cgroup
docs: cgroup-v1: add it to the admin-guide book
2019-07-15 11:03:02 -03:00
configs
…
debug
…
dma
Merge tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping
2019-07-12 15:13:55 -07:00
events
perf/core: Fix exclusive events' grouping
2019-07-13 11:21:28 +02:00
gcov
…
irq
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:22:57 -07:00
livepatch
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
2019-07-11 15:30:05 -07:00
locking
docs: locking: convert docs to ReST and rename to *.rst
2019-07-15 08:53:27 -03:00
power
Merge tag 'pci-v5.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2019-07-15 20:44:49 -07:00
printk
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rcu
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
2019-06-28 19:46:47 +02:00
sched
sched/core: Fix preempt warning in ttwu
2019-07-13 11:23:27 +02:00
time
timekeeping/vsyscall: Use __iter_div_u64_rem()
2019-07-10 20:37:49 +02:00
trace
Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2019-07-12 12:24:03 -07:00
.gitignore
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acct.c
…
async.c
…
audit_fsnotify.c
…
audit_tree.c
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audit_watch.c
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audit.c
Merge tag 'audit-pr-20190702' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2019-07-08 18:55:42 -07:00
audit.h
Merge tag 'audit-pr-20190702' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2019-07-08 18:55:42 -07:00
auditfilter.c
Merge tag 'audit-pr-20190702' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2019-07-08 18:55:42 -07:00
auditsc.c
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backtracetest.c
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bounds.c
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capability.c
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compat.c
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configs.c
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context_tracking.c
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cpu_pm.c
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cpu.c
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 10:39:56 -07:00
crash_core.c
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crash_dump.c
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cred.c
Merge tag 'keys-request-20190626' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
2019-07-08 19:19:37 -07:00
delayacct.c
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dma.c
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elfcore.c
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exec_domain.c
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exit.c
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extable.c
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fail_function.c
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fork.c
Merge tag 'for-linus-20190715' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
2019-07-16 11:30:07 -07:00
freezer.c
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futex.c
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gen_kheaders.sh
kheaders: include only headers into kheaders_data.tar.xz
2019-07-09 10:10:52 +09:00
groups.c
…
hung_task.c
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iomem.c
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
2019-07-12 11:05:40 -07:00
irq_work.c
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jump_label.c
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kallsyms.c
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kcmp.c
…
Kconfig.freezer
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Kconfig.hz
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Kconfig.locks
…
Kconfig.preempt
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kcov.c
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kexec_core.c
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kexec_file.c
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2019-07-08 20:28:59 -07:00
kexec_internal.h
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kexec.c
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kheaders.c
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kmod.c
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kprobes.c
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ksysfs.c
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kthread.c
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latencytop.c
…
Makefile
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memremap.c
memremap: provide an optional internal refcount in struct dev_pagemap
2019-07-02 14:32:44 -03:00
module_signing.c
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module-internal.h
…
module.c
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
2019-06-28 19:46:47 +02:00
notifier.c
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nsproxy.c
…
padata.c
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panic.c
docs: admin-guide: move sysctl directory to it
2019-07-15 11:03:01 -03:00
params.c
…
pid_namespace.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2019-07-08 21:48:15 -07:00
pid.c
kernel/pid.c: convert struct pid count to refcount_t
2019-07-16 19:23:24 -07:00
profile.c
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ptrace.c
ptrace: add PTRACE_GET_SYSCALL_INFO request
2019-07-16 19:23:24 -07:00
range.c
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reboot.c
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relay.c
…
resource.c
resource: fix locking in find_next_iomem_res()
2019-07-18 17:08:06 -07:00
rseq.c
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seccomp.c
…
signal.c
signal: simplify set_user_sigmask/restore_user_sigmask
2019-07-16 19:23:24 -07:00
smp.c
smp: Remove smp_call_function() and on_each_cpu() return values
2019-06-23 14:26:26 +02:00
smpboot.c
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smpboot.h
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softirq.c
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
stackleak.c
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stacktrace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
2019-07-11 15:30:05 -07:00
stop_machine.c
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sys_ni.c
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sys.c
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sysctl_binary.c
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sysctl.c
kernel: fix typos and some coding style in comments
2019-07-16 19:23:21 -07:00
task_work.c
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taskstats.c
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test_kprobes.c
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torture.c
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tracepoint.c
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tsacct.c
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ucount.c
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uid16.c
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uid16.h
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umh.c
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up.c
smp: Remove smp_call_function() and on_each_cpu() return values
2019-06-23 14:26:26 +02:00
user_namespace.c
Merge tag 'keys-namespace-20190627' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
2019-07-08 19:36:47 -07:00
user-return-notifier.c
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user.c
Merge tag 'keys-namespace-20190627' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
2019-07-08 19:36:47 -07:00
utsname_sysctl.c
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utsname.c
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watchdog_hld.c
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watchdog.c
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workqueue_internal.h
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workqueue.c
workqueue: Remove GPF argument from alloc_workqueue_attrs()
2019-06-27 14:12:19 -07:00