Oleg Nesterov 3f17da6994 [PATCH] fix kill_proc_info() vs CLONE_THREAD race ...

There is a window after copy_process() unlocks ->sighand.siglock
and before it adds the new thread to the thread list.

In that window __group_complete_signal(SIGKILL) will not see the
new thread yet, so this thread will start running while the whole
thread group was supposed to exit.

I beleive we have another good reason to place attach_pid(PID/TGID)
under ->sighand.siglock. We can do the same for

	release_task()->__unhash_process()

	de_thread()->switch_exec_pids()

After that we don't need tasklist_lock to iterate over the thread
list, and we can simplify things, see for example do_sigaction()
or sys_times().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-02-15 10:21:23 -08:00

..

irq

[PATCH] kernel/: small cleanups

2006-01-08 20:13:48 -08:00

power

[PATCH] Fix build failure in recent pm_prepare_* changes.

2006-02-07 16:12:33 -08:00

.gitignore

gitignore: ignore more generated files

2006-01-03 11:35:26 +01:00

acct.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

audit.c

[PATCH] EDAC: atomic scrub operations

2006-01-18 19:20:30 -08:00

auditsc.c

[PATCH] EDAC: atomic scrub operations

2006-01-18 19:20:30 -08:00

capability.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

compat.c

[PATCH] remove bogus asm/bug.h includes.

2006-02-07 20:56:35 -05:00

configs.c

update the email address of Randy Dunlap

2006-01-03 13:37:51 +01:00

cpu.c

[PATCH] clean up lock_cpu_hotplug() in cpufreq

2005-11-28 14:42:23 -08:00

cpuset.c

[PATCH] cpuset: fix sparse warning

2006-02-03 08:32:06 -08:00

dma.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exec_domain.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exit.c

[PATCH] Unlinline a bunch of other functions

2006-01-14 18:27:06 -08:00

extable.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fork.c

[PATCH] fix kill_proc_info() vs CLONE_THREAD race

2006-02-15 10:21:23 -08:00

futex.c

[PATCH] FRV: Make futex code compilable on nommu [try #2]

2006-01-06 08:33:33 -08:00

hrtimer.c

[PATCH] hrtimer: round up relative start time on low-res arches

2006-02-14 16:09:35 -08:00

intermodule.c

[PATCH] missing license tag in intermodule

2006-02-05 11:06:52 -08:00

itimer.c

[PATCH] hrtimers: fix oldvalue return in setitimer

2006-02-01 08:53:12 -08:00

kallsyms.c

[PATCH] fix missing includes

2005-10-30 17:37:32 -08:00

Kconfig.hz

[PATCH] i386: Selectable Frequency of the Timer Interrupt

2005-06-23 09:45:10 -07:00

Kconfig.preempt

[PATCH] sched: voluntary kernel preemption

2005-06-25 16:24:45 -07:00

kexec.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

kfifo.c

[PATCH] gfp flags annotations - part 1

2005-10-08 15:00:57 -07:00

kmod.c

[PATCH] Keys: Get rid of warning in kmod.c if keys disabled

2005-10-30 17:37:23 -08:00

kprobes.c

[PATCH] Kprobes: Fix deadlock in function-return probes

2006-02-03 08:32:00 -08:00

ksysfs.c

[PATCH] kdump: export per cpu crash notes pointer through sysfs

2006-01-10 08:01:26 -08:00

kthread.c

[PATCH] Add kthread_stop_sem()

2005-10-30 17:37:17 -08:00

Makefile

[PATCH] build kernel/intermodule.c only when required

2006-01-16 23:15:26 -08:00

module.c

[PATCH] module: strlen_user() race fix

2006-02-07 16:12:32 -08:00

mutex-debug.c

[PATCH] fix/simplify mutex debugging code

2006-01-11 08:14:16 -08:00

mutex-debug.h

[PATCH] mutex subsystem, debugging code

2006-01-09 15:59:20 -08:00

mutex.c

[PATCH] mutex: trivial whitespace cleanups

2006-01-10 14:27:59 -08:00

mutex.h

[PATCH] mutex subsystem, core

2006-01-09 15:59:19 -08:00

panic.c

[PATCH] prevent recursive panic from softlockup watchdog

2006-02-10 08:13:12 -08:00

params.c

[PATCH] kernel/params.c: fix sysfs access with CONFIG_MODULES=n

2005-12-20 10:31:33 -08:00

pid.c

[PATCH] RCU signal handling

2006-01-08 20:13:40 -08:00

posix-cpu-timers.c

[PATCH] hrtimer: switch clock_nanosleep to hrtimer nanosleep API

2006-01-10 08:01:38 -08:00

posix-timers.c

[PATCH] kernel/posix-timers.c: remove do_posix_clock_notimer_create()

2006-02-01 08:53:13 -08:00

printk.c

correct email address of Manfred Spraul

2006-01-15 02:43:54 +01:00

profile.c

[PATCH] mostly_read data section

2005-07-07 18:23:46 -07:00

ptrace.c

[PATCH] compound page: no access_process_vm check

2006-02-14 16:09:33 -08:00

rcupdate.c

[PATCH] rcu: fix hotplug-cpu ->donelist leak

2006-01-10 08:49:47 -08:00

rcutorture.c

[PATCH] rcu_torture_lock deadlock fix

2006-01-31 11:30:18 -08:00

resource.c

[PATCH] kernel/resource.c: __check_region(): remove pointless __deprecated

2006-01-10 08:02:02 -08:00

sched.c

[PATCH] sched: revert "filter affine wakeups"

2006-02-14 16:09:34 -08:00

seccomp.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.c

[PATCH] do_sigaction: cleanup ->sa_mask manipulation

2006-02-09 16:17:36 -08:00

softirq.c

[PATCH] cpu hoptlug: avoid usage of smp_processor_id() in preemptible code

2005-11-07 07:53:29 -08:00

softlockup.c

[PATCH] quieten softlockup at boot

2005-11-09 07:55:50 -08:00

spinlock.c

[PATCH] spinlock consolidation

2005-09-10 10:06:21 -07:00

stop_machine.c

[PATCH] Remove set_fs() in stop_machine()

2006-01-10 08:01:25 -08:00

sys_ni.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge

2006-01-09 10:03:44 -08:00

sys.c

[PATCH] kernel/sys.c NULL noise removal

2006-02-07 20:57:47 -05:00

sysctl.c

[PATCH] zone_reclaim: configurable off node allocation period.

2006-02-01 08:53:16 -08:00

time.c

[PATCH] Normalize timespec for negative values in ns_to_timespec

2006-02-03 08:32:06 -08:00

timer.c

[PATCH] timer.c NULL noise removal

2006-02-07 20:57:42 -05:00

uid16.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

user.c

[PATCH] "Fix uidhash_lock <-> RXU deadlock" fix

2006-01-31 16:49:43 -08:00

wait.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

workqueue.c

[PATCH] Unlinline a bunch of other functions

2006-01-14 18:27:06 -08:00