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Oleg Nesterov 547679087b [PATCH] send_sigqueue: simplify and fix the race 
send_sigqueue() checks PF_EXITING, then locks p->sighand->siglock.  This is
unsafe: 'p' can exit in between and set ->sighand = NULL.  The race is
theoretical, the window is tiny and irqs are disabled by the caller, so I
don't think we need the fix for -stable tree.

Convert send_sigqueue() to use lock_task_sighand() helper.

Also, delete 'p->flags & PF_EXITING' re-check, it is unneeded and the
comment is wrong.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2006-03-28 18:36:44 -08:00
..
irq [PATCH] warn if free_irq() is called from IRQ context 2006-03-26 08:56:53 -08:00
power [PATCH] swswsup: return correct load_image error 2006-03-26 08:56:55 -08:00
.gitignore
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Kconfig.hz
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Kconfig.preempt
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Makefile [PATCH] lightweight robust futexes: compat 2006-03-27 08:44:49 -08:00
acct.c
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audit.c
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audit.h
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auditfilter.c
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auditsc.c Merge branch 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current 2006-03-25 09:24:53 -08:00
capability.c
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compat.c [PATCH] lightweight robust futexes: compat 2006-03-27 08:44:49 -08:00
configs.c
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cpu.c [PATCH] Notifier chain update: API changes 2006-03-27 08:44:50 -08:00
cpuset.c
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dma.c
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exec_domain.c
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exit.c [PATCH] cleanup __exit_signal->cleanup_sighand path 2006-03-28 18:36:44 -08:00
extable.c
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fork.c [PATCH] cleanup __exit_signal->cleanup_sighand path 2006-03-28 18:36:44 -08:00
futex.c [PATCH] lightweight robust futexes updates 2006-03-27 08:44:49 -08:00
futex_compat.c [PATCH] compat_sys_futex() warning fix 2006-03-28 09:16:09 -08:00
hrtimer.c [PATCH] hrtimers: remove data field 2006-03-26 08:57:03 -08:00
intermodule.c
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itimer.c [PATCH] hrtimers: remove data field 2006-03-26 08:57:03 -08:00
kallsyms.c
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kexec.c
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kfifo.c
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kmod.c [PATCH] wait_for_helper: trivial style cleanup 2006-03-28 18:36:41 -08:00
kprobes.c [PATCH] kretprobe instance recycled by parent process 2006-03-26 08:57:04 -08:00
ksysfs.c
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kthread.c
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module.c [PATCH] symversion warning fix 2006-03-28 09:16:02 -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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panic.c [PATCH] Notifier chain update: API changes 2006-03-27 08:44:50 -08:00
params.c [PATCH] Change dash2underscore() return value to char 2006-03-28 09:16:03 -08:00
pid.c [PATCH] pidhash: don't count idle threads 2006-03-28 18:36:41 -08:00
posix-cpu-timers.c
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posix-timers.c [PATCH] hrtimers: remove data field 2006-03-26 08:57:03 -08:00
printk.c
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profile.c [PATCH] Notifier chain update: API changes 2006-03-27 08:44:50 -08:00
ptrace.c [PATCH] don't use REMOVE_LINKS/SET_LINKS for reparenting 2006-03-28 18:36:41 -08:00
rcupdate.c
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rcutorture.c [PATCH] for_each_possible_cpu: fixes for generic part 2006-03-28 09:16:05 -08:00
relay.c
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resource.c
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sched.c [PATCH] for_each_possible_cpu: fixes for generic part 2006-03-28 09:16:05 -08:00
seccomp.c
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signal.c [PATCH] send_sigqueue: simplify and fix the race 2006-03-28 18:36:44 -08:00
softirq.c
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softlockup.c [PATCH] Notifier chain update: API changes 2006-03-27 08:44:50 -08:00
spinlock.c
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stop_machine.c
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sys.c [PATCH] sys_times: don't take tasklist_lock 2006-03-28 18:36:43 -08:00
sys_ni.c [PATCH] lightweight robust futexes: core 2006-03-27 08:44:49 -08:00
sysctl.c
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time.c [PATCH] hrtimers: remove nsec_t typedef 2006-03-26 08:57:03 -08:00
timer.c [PATCH] remove pps support 2006-03-25 08:23:02 -08:00
uid16.c
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user.c
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wait.c
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workqueue.c
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