You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Peter Zijlstra 24ec839c43 [PATCH] tty: ->signal->tty locking ... Fix the locking of signal->tty. Use ->sighand->siglock to protect ->signal->tty; this lock is already used by most other members of ->signal/->sighand. And unless we are 'current' or the tasklist_lock is held we need ->siglock to access ->signal anyway. (NOTE: sys_unshare() is broken wrt ->sighand locking rules) Note that tty_mutex is held over tty destruction, so while holding tty_mutex any tty pointer remains valid. Otherwise the lifetime of ttys are governed by their open file handles. This leaves some holes for tty access from signal->tty (or any other non file related tty access). It solves the tty SLAB scribbles we were seeing. (NOTE: the change from group_send_sig_info to __group_send_sig_info needs to be examined by someone familiar with the security framework, I think it is safe given the SEND_SIG_PRIV from other __group_send_sig_info invocations) [schwidefsky@de.ibm.com: 3270 fix] [akpm@osdl.org: various post-viro fixes] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Alan Cox <alan@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Roland McGrath <roland@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		18 years ago
..
skas	[PATCH] uml: correct removal of pte_mkexec	19 years ago
tt	[PATCH] uml ubd driver: various little changes	19 years ago
Makefile	[PATCH] uml: file renaming	19 years ago
asm-offsets.c	…
config.c.in	…
dyn.lds.S	[PATCH] uml: add _text definition to linker scripts	19 years ago
exec.c	[PATCH] tty: ->signal->tty locking	18 years ago
exitcode.c	[PATCH] uml: locking documentation	19 years ago
gmon_syms.c	[PATCH] uml: fix gcov support	19 years ago
gprof_syms.c	…
init_task.c	Remove all inclusions of <linux/config.h>	19 years ago
initrd.c	…
irq.c	[PATCH] uml: split memory allocation prototypes out of user.h	19 years ago
ksyms.c	Remove all inclusions of <linux/config.h>	19 years ago
mem.c	[PATCH] uml: get rid of ZONE_DMA use	19 years ago
physmem.c	…
process.c	[PATCH] uml: split memory allocation prototypes out of user.h	19 years ago
ptrace.c	…
reboot.c	…
resource.c	…
sigio.c	[PATCH] uml pt_regs fixes	19 years ago
signal.c	Remove all inclusions of <linux/config.h>	19 years ago
smp.c	Remove all inclusions of <linux/config.h>	19 years ago
syscall.c	[PATCH] rename the provided execve functions to kernel_execve	19 years ago
sysrq.c	Remove all inclusions of <linux/config.h>	19 years ago
time.c	[PATCH] uml pt_regs fixes	19 years ago
tlb.c	…
trap.c	Remove all inclusions of <linux/config.h>	19 years ago
uaccess.c	…
um_arch.c	Remove all inclusions of <linux/config.h>	19 years ago
umid.c	…
uml.lds.S	[PATCH] uml: add _text definition to linker scripts	19 years ago
vmlinux.lds.S	…