diff options
| author | Lokesh Vutla <lokeshvutla@ti.com> | 2017-02-27 14:28:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-27 18:43:46 -0800 |
| commit | 08865514805d2de8e7002fa8149c5de3e391f412 (patch) | |
| tree | f366ebfda75357b9408688ce477bd2097a7cc6f3 /init/main.c | |
| parent | 7bcae82621df080a35cb5e708ef333a821effd96 (diff) | |
| download | lwn-08865514805d2de8e7002fa8149c5de3e391f412.tar.gz lwn-08865514805d2de8e7002fa8149c5de3e391f412.zip | |
initramfs: finish fput() before accessing any binary from initramfs
Commit 4a9d4b024a31 ("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>
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/init/main.c b/init/main.c index 24ea48745061..6eb10ce472b9 100644 --- a/init/main.c +++ b/init/main.c @@ -71,7 +71,6 @@ #include <linux/shmem_fs.h> #include <linux/slab.h> #include <linux/perf_event.h> -#include <linux/file.h> #include <linux/ptrace.h> #include <linux/blkdev.h> #include <linux/elevator.h> @@ -960,8 +959,6 @@ static int __ref kernel_init(void *unused) system_state = SYSTEM_RUNNING; numa_default_policy(); - flush_delayed_fput(); - rcu_end_inkernel_boot(); if (ramdisk_execute_command) { |