Dominique Martinet a1b3d2f217 fs/proc/kcore.c: fix invalid memory access in multi-page read optimization ...

The 'm' kcore_list item could point to kclist_head, and it is incorrect to
look at m->addr / m->size in this case.

There is no choice but to run through the list of entries for every
address if we did not find any entry in the previous iteration

Reset 'm' to NULL in that case at Omar Sandoval's suggestion.

[akpm@linux-foundation.org: add comment]
Link: http://lkml.kernel.org/r/1536100702-28706-1-git-send-email-asmadeus@codewreck.org
Fixes: bf991c2231 ("proc/kcore: optimize multiple page reads")
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Omar Sandoval <osandov@osandov.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: James Morse <james.morse@arm.com>
Cc: Bhupesh Sharma <bhsharma@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-09-20 22:01:11 +02:00

..

array.c

proc: use "unsigned int" for sigqueue length

2018-06-07 17:34:38 -07:00

base.c

proc: use macro in /proc/latency hook

2018-08-22 10:52:46 -07:00

cmdline.c

…

consoles.c

…

cpuinfo.c

…

devices.c

…

fd.c

proc: use "unsigned int" in proc_fill_cache()

2018-06-07 17:34:38 -07:00

fd.h

…

generic.c

proc: smaller readlock section in readdir("/proc")

2018-08-22 10:52:45 -07:00

inode.c

proc: fixup PDE allocation bloat

2018-08-22 10:52:45 -07:00

internal.h

proc: spread "const" a bit

2018-08-22 10:52:46 -07:00

interrupts.c

…

Kconfig

proc/kcore: add vmcoreinfo note to /proc/kcore

2018-08-22 10:52:46 -07:00

kcore.c

fs/proc/kcore.c: fix invalid memory access in multi-page read optimization

2018-09-20 22:01:11 +02:00

kmsg.c

…

loadavg.c

…

Makefile

…

meminfo.c

/proc/meminfo: add percpu populated pages count

2018-08-22 10:52:45 -07:00

namespaces.c

procfs: switch instantiate_t to d_splice_alias()

2018-05-26 14:20:50 -04:00

nommu.c

…

page.c

mm: mark pages in use for page tables

2018-06-07 17:34:37 -07:00

proc_net.c

…

proc_sysctl.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

proc_tty.c

…

root.c

proc: Make inline name size calculation automatic

2018-06-15 00:48:57 -04:00

self.c

…

softirqs.c

…

stat.c

proc: use "unsigned int" in /proc/stat hook

2018-08-22 10:52:46 -07:00

task_mmu.c

mm: /proc/pid/smaps_rollup: convert to single value seq_file

2018-08-22 10:52:44 -07:00

task_nommu.c

mm: /proc/pid/*maps remove is_pid and related wrappers

2018-08-22 10:52:44 -07:00

thread_self.c

…

uptime.c

fs/proc/uptime.c: use ktime_get_boottime_ts64

2018-08-22 10:52:45 -07:00

util.c

…

version.c

…

vmcore.c

fs/proc/vmcore.c: hide vmcoredd_mmap_dumps() for nommu builds

2018-08-23 18:48:43 -07:00