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linux/fs/proc
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Linus Torvalds 76597cd314 proc: fix oops on invalid /proc/<pid>/maps access 
When m_start returns an error, the seq_file logic will still call m_stop
with that error entry, so we'd better make sure that we check it before
using it as a vma.

Introduced by commit ec6fd8a435 ("report errors in /proc/*/*map*
sanely"), which replaced NULL with various ERR_PTR() cases.

(On ia64, you happen to get a unaligned fault instead of a page fault,
since the address used is generally some random error code like -EPERM)

Reported-by: Anca Emanuel <anca.emanuel@gmail.com>
Reported-by: Tony Luck <tony.luck@intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Américo Wang <xiyou.wangcong@gmail.com>
Cc: Stephen Wilson <wilsons@start.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-27 19:09:29 -07:00
..
array.c proc: protect mm start_code/end_code in /proc/pid/stat 2011-03-23 19:46:37 -07:00
base.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-23 20:51:42 -07:00
cmdline.c
consoles.c console: rename acquire/release_console_sem() to console_lock/unlock() 2011-01-26 10:50:06 +10:00
cpuinfo.c
devices.c proc: use seq_puts()/seq_putc() where possible 2011-01-13 08:03:16 -08:00
generic.c proc: make struct proc_dir_entry::namelen unsigned int 2011-03-23 19:46:37 -07:00
inode.c procfs: kill the global proc_mnt variable 2011-03-23 19:46:58 -07:00
internal.h procfs: kill the global proc_mnt variable 2011-03-23 19:46:58 -07:00
interrupts.c
Kconfig kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
kcore.c /proc/kcore: fix seeking 2011-01-13 08:03:17 -08:00
kmsg.c procfs: Use generic_file_llseek in /proc/kmsg 2010-04-09 16:35:41 +02:00
loadavg.c
Makefile proc: move proc_console.c to fs/proc/consoles.c 2011-01-13 08:03:17 -08:00
meminfo.c thp: transparent hugepage vmstat 2011-01-13 17:32:43 -08:00
mmu.c
nommu.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
page.c thp: remove PG_buddy 2011-01-13 17:32:43 -08:00
proc_devtree.c of/flattree: Drop an uninteresting message to pr_debug level 2011-03-02 13:45:18 -07:00
proc_net.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
proc_sysctl.c Merge branch 'next' into for-linus 2011-03-16 09:41:17 +11:00
proc_tty.c proc: use seq_puts()/seq_putc() where possible 2011-01-13 08:03:16 -08:00
root.c procfs: kill the global proc_mnt variable 2011-03-23 19:46:58 -07:00
softirqs.c proc: use seq_puts()/seq_putc() where possible 2011-01-13 08:03:16 -08:00
stat.c proc: use seq_puts()/seq_putc() where possible 2011-01-13 08:03:16 -08:00
task_mmu.c proc: fix oops on invalid /proc/<pid>/maps access 2011-03-27 19:09:29 -07:00
task_nommu.c report errors in /proc/*/*map* sanely 2011-03-23 16:36:50 -04:00
uptime.c
version.c
vmcore.c ARM: 6485/5: proc/vmcore - allow archs to override vmcore_elf_check_arch() 2010-11-30 13:39:55 +00:00