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

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power

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.gitignore

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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

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capability.c

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compat.c

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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_compat.c

[PATCH] compat_sys_futex() warning fix

2006-03-28 09:16:09 -08:00

futex.c

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hrtimer.c

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intermodule.c

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itimer.c

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kallsyms.c

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Kconfig.hz

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Kconfig.preempt

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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

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ksysfs.c

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kthread.c

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Makefile

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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

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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_ni.c

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sys.c

[PATCH] sys_times: don't take tasklist_lock

2006-03-28 18:36:43 -08:00

sysctl.c

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time.c

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timer.c

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uid16.c

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user.c

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wait.c

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workqueue.c

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