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linux/kernel
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Oleg Nesterov 6405f7f467 ptrace_stop: fix the race with ptrace detach+attach 
If the tracer went away (may_ptrace_stop() failed), ptrace_stop() drops
tasklist and then changes the ->state from TASK_TRACED to TASK_RUNNING.

This can fool another tracer which attaches to us in between.  Change the
->state under tasklist_lock to ensure that ptrace_check_attach() can't wrongly
succeed.  Also, remove the unnecessary mb().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:26 -08:00
..
irq
genirq: stackdump after the "Trying to free already-free IRQ" message
2008-01-30 13:33:24 +01:00
power
PM: documentation cleanups
2008-02-07 01:27:17 -05:00
time
time: fix sysfs_show_{available,current}_clocksources() buffer overflow problem
2008-02-06 10:41:03 -08:00
.gitignore
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acct.c
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audit_tree.c
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audit.c
[AUDIT] ratelimit printk messages audit
2008-02-01 14:25:04 -05:00
audit.h
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auditfilter.c
[AUDIT] make audit=0 really stop audit messages
2008-02-01 14:24:33 -05:00
auditsc.c
[AUDIT] create context if auditing was ever enabled
2008-02-01 14:24:45 -05:00
backtracetest.c
x86: add a simple backtrace test module
2008-01-30 13:33:08 +01:00
capability.c
Add 64-bit capability support to the kernel
2008-02-05 09:44:20 -08:00
cgroup_debug.c
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cgroup.c
Handle pid namespaces in cgroups code
2008-02-07 08:42:22 -08:00
compat.c
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configs.c
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cpu.c
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cpuset.c
proc: seqfile convert proc_pid_status to properly handle pid namespaces
2008-02-08 09:22:24 -08:00
delayacct.c
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dma.c
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exec_domain.c
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exit.c
kill my_ptrace_child()
2008-02-08 09:22:26 -08:00
extable.c
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fork.c
Memory controller: accounting setup
2008-02-07 08:42:18 -08:00
futex_compat.c
futex: Add bitset conditional wait/wakeup functionality
2008-02-01 17:45:14 +01:00
futex.c
futex: Add bitset conditional wait/wakeup functionality
2008-02-01 17:45:14 +01:00
hrtimer.c
timerfd: new timerfd API
2008-02-05 09:44:07 -08:00
itimer.c
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kallsyms.c
remove support for un-needed _extratext section
2008-02-06 10:41:01 -08:00
Kconfig.hz
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Kconfig.preempt
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kexec.c
vmcoreinfo: add "VMCOREINFO_" to all the call for vmcoreinfo_append_str()
2008-02-07 08:42:25 -08:00
kfifo.c
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kmod.c
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kprobes.c
kprobes: kretprobe user entry-handler
2008-02-06 10:41:11 -08:00
ksysfs.c
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kthread.c
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latencytop.c
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lockdep_internals.h
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lockdep_proc.c
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lockdep.c
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Makefile
namespaces: cleanup the code managed with PID_NS option
2008-02-08 09:22:23 -08:00
marker.c
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module.c
fix "modules: make module_address_lookup() safe"
2008-02-08 09:22:24 -08:00
mutex-debug.c
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mutex-debug.h
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mutex.c
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mutex.h
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notifier.c
kernel/notifier.c should #include <linux/reboot.h>
2008-02-06 10:41:02 -08:00
ns_cgroup.c
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nsproxy.c
namespaces: move the IPC namespace under IPC_NS option
2008-02-08 09:22:23 -08:00
panic.c
ACPI: Taint kernel on ACPI table override (format corrected)
2008-02-06 22:07:51 -05:00
params.c
kernel/params.c: remove sparse-warning (different signedness)
2008-02-06 10:41:08 -08:00
pid_namespace.c
namespaces: cleanup the code managed with PID_NS option
2008-02-08 09:22:23 -08:00
pid.c
namespaces: cleanup the code managed with PID_NS option
2008-02-08 09:22:23 -08:00
pm_qos_params.c
pm qos infrastructure and interface
2008-02-05 09:44:22 -08:00
posix-cpu-timers.c
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posix-timers.c
timerfd: new timerfd API
2008-02-05 09:44:07 -08:00
printk.c
printk.c: use unsigned ints instead of longs for logbuf index
2008-02-06 10:41:04 -08:00
profile.c
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ptrace.c
ptrace_check_attach: remove unneeded ->signal != NULL check
2008-02-08 09:22:26 -08:00
rcuclassic.c
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rcupdate.c
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rcupreempt_trace.c
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rcupreempt.c
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rcutorture.c
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relay.c
relay: nopage
2008-02-06 10:41:07 -08:00
res_counter.c
Memory controller improve user interface
2008-02-07 08:42:18 -08:00
resource.c
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rtmutex_common.h
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rtmutex-debug.c
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rtmutex-debug.h
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rtmutex-tester.c
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rtmutex.c
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rtmutex.h
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rwsem.c
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sched_debug.c
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sched_fair.c
sched: let +nice tasks have smaller impact
2008-01-31 22:45:22 +01:00
sched_idletask.c
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sched_rt.c
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sched_stats.h
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sched.c
Merge branch 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc
2008-02-01 11:45:47 +11:00
seccomp.c
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signal.c
ptrace_stop: fix the race with ptrace detach+attach
2008-02-08 09:22:26 -08:00
softirq.c
time: track accurate idle time with tick_sched.idle_sleeptime
2008-01-30 13:30:04 +01:00
softlockup.c
debug: softlockup looping fix
2008-02-02 14:27:45 +11:00
spinlock.c
spinlock: lockbreak cleanup
2008-01-30 13:31:20 +01:00
srcu.c
make srcu_readers_active() static
2008-02-06 10:41:02 -08:00
stacktrace.c
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stop_machine.c
stopmachine: semaphore to mutex
2008-02-06 10:41:08 -08:00
sys_ni.c
timerfd: new timerfd API
2008-02-05 09:44:07 -08:00
sys.c
kernel/sys.c: get rid of expensive divides in groups_sort()
2008-02-06 10:41:09 -08:00
sysctl_check.c
capabilities: introduce per-process capability bounding set
2008-02-05 09:44:20 -08:00
sysctl.c
hugetlb: add locking for overcommit sysctl
2008-02-08 09:22:23 -08:00
taskstats.c
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test_kprobes.c
kprobes: kretprobe user entry-handler
2008-02-06 10:41:11 -08:00
time.c
speed up jiffies conversion functions if HZ==USER_HZ
2008-02-06 10:41:10 -08:00
timer.c
taskstats scaled time cleanup
2008-02-06 10:41:00 -08:00
tsacct.c
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uid16.c
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user_namespace.c
namespaces: cleanup the code managed with the USER_NS option
2008-02-08 09:22:23 -08:00
user.c
namespaces: cleanup the code managed with the USER_NS option
2008-02-08 09:22:23 -08:00
utsname_sysctl.c
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utsname.c
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wait.c
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workqueue.c
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