linux-stable.git/fs/proc/base.c, branch v3.12.35

fs/proc/base.c: fix GPF in /proc/$PID/map_files

2014-03-22T21:01:59+00:00

commit 70335abb2689c8cd5df91bf2d95a65649addf50b upstream.

The expected logic of proc_map_files_get_link() is either to return 0
and initialize 'path' or return an error and leave 'path' uninitialized.

By the time dname_to_vma_addr() returns 0 the corresponding vma may have
already be gone.  In this case the path is not initialized but the
return value is still 0.  This results in 'general protection fault'
inside d_path().

Steps to reproduce:

  CONFIG_CHECKPOINT_RESTORE=y

    fd = open(...);
    while (1) {
        mmap(fd, ...);
        munmap(fd, ...);
    }

  ls -la /proc/$PID/map_files

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=68991

Signed-off-by: Artem Fetishev 
Signed-off-by: Aleksandr Terekhov 
Reported-by: 
Acked-by: Pavel Emelyanov 
Acked-by: Cyrill Gorcunov 
Reviewed-by: "Eric W. Biederman" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Jiri Slaby

proc_fill_cache(): clean up, get rid of pointless find_inode_number() use

2013-06-29T08:57:19+00:00

Signed-off-by: Al Viro

proc_fill_cache(): just make instantiate_t return int

2013-06-29T08:57:18+00:00

all instances always return ERR_PTR(-E...) or NULL, anyway

Signed-off-by: Al Viro

proc_pid_readdir(): stop wanking with proc_fill_cache() for /proc/self

2013-06-29T08:57:17+00:00

Signed-off-by: Al Viro

proc_fill_cache(): kill pointless check

2013-06-29T08:57:16+00:00

we'd just checked that child->d_inode is non-NULL, for fuck sake!

Signed-off-by: Al Viro

[readdir] convert procfs

2013-06-29T08:56:32+00:00

Signed-off-by: Al Viro

posix-timers: Show clock ID in proc file

2013-05-28T09:41:14+00:00

Expand information about posix-timers in /proc//timers by adding
info about clock, with which the timer was created. I.e. in the forth
line of timer info after "notify:" line go "ClockID: ".

Signed-off-by: Pavel Tikhomirov 
Cc: Michael Kerrisk 
Cc: Matthew Helsley 
Cc: Pavel Emelyanov 
Link: http://lkml.kernel.org/r/1368742323-46949-2-git-send-email-snorcht@gmail.com
Signed-off-by: Thomas Gleixner

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-05-02T00:51:54+00:00

Pull VFS updates from Al Viro,

Misc cleanups all over the place, mainly wrt /proc interfaces (switch
create_proc_entry to proc_create(), get rid of the deprecated
create_proc_read_entry() in favor of using proc_create_data() and
seq_file etc).

7kloc removed.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits)
  don't bother with deferred freeing of fdtables
  proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
  proc: Make the PROC_I() and PDE() macros internal to procfs
  proc: Supply a function to remove a proc entry by PDE
  take cgroup_open() and cpuset_open() to fs/proc/base.c
  ppc: Clean up scanlog
  ppc: Clean up rtas_flash driver somewhat
  hostap: proc: Use remove_proc_subtree()
  drm: proc: Use remove_proc_subtree()
  drm: proc: Use minor->index to label things, not PDE->name
  drm: Constify drm_proc_list[]
  zoran: Don't print proc_dir_entry data in debug
  reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show()
  proc: Supply an accessor for getting the data from a PDE's parent
  airo: Use remove_proc_subtree()
  rtl8192u: Don't need to save device proc dir PDE
  rtl8187se: Use a dir under /proc/net/r8180/
  proc: Add proc_mkdir_data()
  proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h}
  proc: Move PDE_NET() to fs/proc/proc_net.c
  ...

take cgroup_open() and cpuset_open() to fs/proc/base.c

2013-05-01T21:29:46+00:00

Signed-off-by: Al Viro

proc: Uninline pid_delete_dentry()

2013-05-01T21:29:39+00:00

Uninline pid_delete_dentry() as it's only used by three function pointers.

Signed-off-by: David Howells 
Signed-off-by: Al Viro