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Oleg Nesterov 6b3934ef52 [PATCH] copy_process: cleanup bad_fork_cleanup_signal 
__exit_signal() does important cleanups atomically under ->siglock.  It is
also called from copy_process's error path.  This is not good, for example we
can't move __unhash_process() under ->siglock for that reason.

We should not mix these 2 paths, just look at ugly 'if (p->sighand)' under
'bad_fork_cleanup_sighand:' label.  For copy_process() case it is sufficient
to just backout copy_signal(), nothing more.

Again, nobody can see this task yet.  For CLONE_THREAD case we just decrement
signal->count, otherwise nobody can see this ->signal and we can free it
lockless.

This patch assumes it is safe to do exit_thread_group_keys() without
tasklist_lock.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-28 18:36:42 -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
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] fix audit_init failure path
2006-03-20 14:08:55 -05:00
audit.h
[PATCH] sem2mutex: audit_netlink_sem
2006-03-20 14:08:55 -05:00
auditfilter.c
[PATCH] sem2mutex: audit_netlink_sem
2006-03-20 14:08:55 -05:00
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
[PATCH] refactor capable() to one implementation, add __capable() helper
2006-03-25 08:22:56 -08:00
compat.c
[PATCH] lightweight robust futexes: compat
2006-03-27 08:44:49 -08:00
configs.c
update the email address of Randy Dunlap
2006-01-03 13:37:51 +01:00
cpu.c
[PATCH] Notifier chain update: API changes
2006-03-27 08:44:50 -08:00
cpuset.c
[PATCH] cpuset: remove useless local variable initialization
2006-03-24 07:33:24 -08:00
dma.c
…
exec_domain.c
[PATCH] Fix module refcount leak in __set_personality()
2006-03-24 07:33:30 -08:00
exit.c
[PATCH] release_task: replace open-coded ptrace_unlink()
2006-03-28 18:36:41 -08:00
extable.c
…
fork.c
[PATCH] copy_process: cleanup bad_fork_cleanup_signal
2006-03-28 18:36:42 -08:00
futex_compat.c
[PATCH] compat_sys_futex() warning fix
2006-03-28 09:16:09 -08:00
futex.c
[PATCH] lightweight robust futexes updates
2006-03-27 08:44:49 -08:00
hrtimer.c
[PATCH] hrtimers: remove data field
2006-03-26 08:57:03 -08:00
intermodule.c
[PATCH] missing license tag in intermodule
2006-02-05 11:06:52 -08:00
itimer.c
[PATCH] hrtimers: remove data field
2006-03-26 08:57:03 -08:00
kallsyms.c
…
Kconfig.hz
…
Kconfig.preempt
…
kexec.c
[PATCH] move capable() to capability.h
2006-01-11 18:42:13 -08:00
kfifo.c
…
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
[PATCH] fix build error if CONFIG_SYSFS=n
2006-03-24 07:33:31 -08:00
kthread.c
[PATCH] find_task_by_pid() needs tasklist_lock
2006-03-25 08:22:57 -08:00
Makefile
[PATCH] lightweight robust futexes: compat
2006-03-27 08:44:49 -08:00
module.c
[PATCH] symversion warning fix
2006-03-28 09:16:02 -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] 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
[PATCH] hrtimer: switch clock_nanosleep to hrtimer nanosleep API
2006-01-10 08:01:38 -08:00
posix-timers.c
[PATCH] hrtimers: remove data field
2006-03-26 08:57:03 -08:00
printk.c
[PATCH] console_setup() depends (wrongly?) on CONFIG_PRINTK
2006-03-24 07:33:27 -08:00
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
[PATCH] rcu_process_callbacks: don't cli() while testing ->nxtlist
2006-03-24 07:33:20 -08:00
rcutorture.c
[PATCH] for_each_possible_cpu: fixes for generic part
2006-03-28 09:16:05 -08:00
relay.c
[PATCH] relay: consolidate sendfile() and read() code
2006-03-23 19:58:45 +01:00
resource.c
[PATCH] kernel/resource.c: __check_region(): remove pointless __deprecated
2006-01-10 08:02:02 -08:00
sched.c
[PATCH] for_each_possible_cpu: fixes for generic part
2006-03-28 09:16:05 -08:00
seccomp.c
…
signal.c
[PATCH] copy_process: cleanup bad_fork_cleanup_signal
2006-03-28 18:36:42 -08:00
softirq.c
[PATCH] on_each_cpu(): disable local interrupts
2006-03-22 07:53:59 -08:00
softlockup.c
[PATCH] Notifier chain update: API changes
2006-03-27 08:44:50 -08:00
spinlock.c
[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage
2006-03-23 07:38:16 -08:00
stop_machine.c
[PATCH] Remove set_fs() in stop_machine()
2006-01-10 08:01:25 -08:00
sys_ni.c
[PATCH] lightweight robust futexes: core
2006-03-27 08:44:49 -08:00
sys.c
[PATCH] Notifier chain update: API changes
2006-03-27 08:44:50 -08:00
sysctl.c
[PATCH] Range checking in do_proc_dointvec_(userhz_)jiffies_conv
2006-03-24 07:33:20 -08:00
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
[PATCH] move capable() to capability.h
2006-01-11 18:42:13 -08:00
user.c
[PATCH] free_uid() locking improvement
2006-03-24 07:33:20 -08:00
wait.c
…
workqueue.c
[SCSI] add execute_in_process_context() API
2006-02-27 23:34:40 -06:00