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Lokesh Vutla 0886551480 initramfs: finish fput() before accessing any binary from initramfs 
Commit 4a9d4b024a ("switch fput to task_work_add") implements a
schedule_work() for completing fput(), but did not guarantee calling
__fput() after unpacking initramfs.  Because of this, there is a
possibility that during boot a driver can see ETXTBSY when it tries to
load a binary from initramfs as fput() is still pending on that binary.

This patch makes sure that fput() is completed after unpacking initramfs
and removes the call to flush_delayed_fput() in kernel_init() which
happens very late after unpacking initramfs.

Link: http://lkml.kernel.org/r/20170201140540.22051-1-lokeshvutla@ti.com
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reported-by: Murali Karicheri <m-karicheri2@ti.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2017-02-27 18:43:46 -08:00
..
Kconfig Merge branch 'akpm' (patches from Andrew) 2017-02-22 19:29:24 -08:00
Makefile kbuild: allow archs to select link dead code/data elimination 2016-09-09 10:47:00 +02:00
calibrate.c kernel: add calibration_delay_done() 2014-06-16 12:47:39 -06:00
do_mounts.c init: reduce rootwait polling interval time to 5ms 2016-12-12 18:55:10 -08:00
do_mounts.h init/do_mounts: initrd_load() can be boolean 2016-01-20 17:09:18 -08:00
do_mounts_initrd.c init/do_mounts: initrd_load() can be boolean 2016-01-20 17:09:18 -08:00
do_mounts_md.c init: disable sparse checking of the mount.o source files 2012-05-31 17:49:27 -07:00
do_mounts_rd.c init: use pr_cont() when displaying rotator during ramdisk loading. 2016-11-24 09:32:20 -08:00
init_task.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
initramfs.c initramfs: finish fput() before accessing any binary from initramfs 2017-02-27 18:43:46 -08:00
main.c initramfs: finish fput() before accessing any binary from initramfs 2017-02-27 18:43:46 -08:00
noinitramfs.c init: mark __user address space on string literals 2010-10-26 16:52:15 -07:00
version.c locking/atomic, kref: Add KREF_INIT() 2017-01-14 11:37:18 +01:00