Ubuntu-focal-kernel/fs/proc
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
..
Kconfig proc/kcore: add vmcoreinfo note to /proc/kcore 2018-08-22 10:52:46 -07:00
Makefile
array.c
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
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
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
meminfo.c /proc/meminfo: add percpu populated pages count 2018-08-22 10:52:45 -07:00
namespaces.c
nommu.c
page.c
proc_net.c
proc_sysctl.c
proc_tty.c
root.c
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
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