Vegard Nossum b0f5a8f32e kthread: fix boot hang (regression) on MIPS/OpenRISC ... This fixes a regression in commit 4d6501dce0 where I didn't notice that MIPS and OpenRISC were reinitialising p->{set,clear}_child_tid to NULL after our initialisation in copy_process(). We can simply get rid of the arch-specific initialisation here since it is now always done in copy_process() before hitting copy_thread{,_tls}(). Review notes: - As far as I can tell, copy_process() is the only user of copy_thread_tls(), which is the only caller of copy_thread() for architectures that don't implement copy_thread_tls(). - After this patch, there is no arch-specific code touching p->set_child_tid or p->clear_child_tid whatsoever. - It may look like MIPS/OpenRISC wanted to always have these fields be NULL, but that's not true, as copy_process() would unconditionally set them again _after_ calling copy_thread_tls() before commit 4d6501dce0. Fixes: 4d6501dce0 ("kthread: Fix use-after-free if kthread fork fails") Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> # MIPS only Acked-by: Stafford Horne <shorne@gmail.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: openrisc@lists.librecores.org Cc: Jamie Iles <jamie.iles@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-05-29 09:40:54 -07:00
..
.gitignore	openrisc: Add .gitignore	2017-02-25 04:14:36 +09:00
asm-offsets.c
dma.c	treewide: Constify most dma_map_ops structures	2017-01-24 12:23:35 -05:00
entry.S	scripts/spelling.txt: add "efective" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
head.S	scripts/spelling.txt: add "aligment" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
irq.c	openrisc: Get rid of handle_IRQ	2014-09-03 13:11:02 +00:00
Makefile
module.c	openrisc: Refactor 16-bit constant relocation	2013-11-05 16:27:55 +01:00
or32_ksyms.c	openrisc: Export symbols needed by modules	2017-03-16 00:12:57 +09:00
process.c	kthread: fix boot hang (regression) on MIPS/OpenRISC	2017-05-29 09:40:54 -07:00
prom.c
ptrace.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
setup.c	openrisc: add cache way information to cpuinfo	2017-02-06 21:50:41 +09:00
signal.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
sys_call_table.c
time.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
traps.c	sched/headers: Prepare to move kstack_end() from <linux/sched.h> to <linux/sched/task_stack.h>	2017-03-02 08:42:39 +01:00
vmlinux.h	of/fdt: consolidate built-in dtb section variables	2014-04-30 00:59:13 -05:00
vmlinux.lds.S	scripts/spelling.txt: add "aligment" pattern and fix typo instances	2017-02-27 18:43:46 -08:00