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Linus Torvalds c4ad8f98be execve: use 'struct filename *' for executable name passing ... This changes 'do_execve()' to get the executable name as a 'struct filename', and to free it when it is done. This is what the normal users want, and it simplifies and streamlines their error handling. The controlled lifetime of the executable name also fixes a use-after-free problem with the trace_sched_process_exec tracepoint: the lifetime of the passed-in string for kernel users was not at all obvious, and the user-mode helper code used UMH_WAIT_EXEC to serialize the pathname allocation lifetime with the execve() having finished, which in turn meant that the trace point that happened after mm_release() of the old process VM ended up using already free'd memory. To solve the kernel string lifetime issue, this simply introduces "getname_kernel()" that works like the normal user-space getname() function, except with the source coming from kernel memory. As Oleg points out, this also means that we could drop the tcomm[] array from 'struct linux_binprm', since the pathname lifetime now covers setup_new_exec(). That would be a separate cleanup. Reported-by: Igor Zhbanov <i.zhbanov@samsung.com> Tested-by: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		11 years ago
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Kconfig	alpha: Enable system-call auditing support.	11 years ago
Makefile	init_task: Replace CONFIG_HAVE_GENERIC_INIT_TASK	13 years ago
calibrate.c	kernel: delete __cpuinit usage from all core kernel files	12 years ago
do_mounts.c	init/do_mounts.c: add maj:min syntax comment	11 years ago
do_mounts.h	…
do_mounts_initrd.c	usermodehelper: split remaining calls to call_usermodehelper_fns()	12 years ago
do_mounts_md.c	init: disable sparse checking of the mount.o source files	13 years ago
do_mounts_rd.c	cramfs: take headers to fs/cramfs	11 years ago
init_task.c	sched/rt: Move rt specific bits into new header file	12 years ago
initramfs.c	init: fix possible format string bug	11 years ago
main.c	execve: use 'struct filename *' for executable name passing	11 years ago
noinitramfs.c	init: mark __user address space on string literals	14 years ago
version.c	proc: Split the namespace stuff out into linux/proc_ns.h	12 years ago