Marcelo Henrique Cerri cb0fc2a32a proc: Avoid mixing integer types in mem_rw() ...

[ Upstream commit d238692b4b9f2c36e35af4c6e6f6da36184aeb3e ]

Use size_t when capping the count argument received by mem_rw(). Since
count is size_t, using min_t(int, ...) can lead to a negative value
that will later be passed to access_remote_vm(), which can cause
unexpected behavior.

Since we are capping the value to at maximum PAGE_SIZE, the conversion
from size_t to int when passing it to access_remote_vm() as "len"
shouldn't be a problem.

Link: https://lkml.kernel.org/r/20210512125215.3348316-1-marcelo.cerri@canonical.com
Reviewed-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Souza Cascardo <cascardo@canonical.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-07-28 09:12:35 +02:00

..

array.c

fs/proc/array.c: allow reporting eip/esp for all coredumping threads

2019-12-21 10:35:07 +01:00

base.c

proc: Avoid mixing integer types in mem_rw()

2021-07-28 09:12:35 +02:00

cmdline.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

consoles.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

cpuinfo.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

devices.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

fd.c

proc: actually make proc_fd_permission() thread-friendly

2015-11-06 17:50:42 -08:00

fd.h

…

generic.c

proc: Fix unbalanced hard link numbers

2017-05-25 14:30:10 +02:00

inode.c

proc: Use new_inode not new_inode_pseudo

2020-06-20 10:23:18 +02:00

internal.h

proc: Allow creating permanently empty directories that serve as mount points

2015-07-01 10:36:41 -05:00

interrupts.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

Kconfig

fs, proc: add help for CONFIG_PROC_CHILDREN

2015-07-17 16:39:52 -07:00

kcore.c

x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86

2015-07-18 03:42:51 +02:00

kmsg.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

loadavg.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

Makefile

proc: Implement /proc/thread-self to point at the directory of the current thread

2014-08-04 10:07:11 -07:00

meminfo.c

mm/page_alloc.c: calculate 'available' memory in a separate function

2020-01-23 08:18:35 +01:00

namespaces.c

ptrace: use fsuid, fsgid, effective creds for fs access checks

2016-02-25 12:01:16 -08:00

nommu.c

vfs: add seq_file_path() helper

2015-06-23 18:01:07 -04:00

page.c

proc: add cond_resched to /proc/kpage* read/write loop

2015-09-10 13:29:01 -07:00

proc_net.c

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15 15:06:57 -04:00

proc_sysctl.c

fs/proc/proc_sysctl.c: Fix a NULL pointer dereference

2019-05-16 19:44:51 +02:00

proc_tty.c

tty fix oops when rmmod 8250

2017-12-20 10:05:00 +01:00

root.c

proc: prevent stacking filesystems on top

2016-06-24 10:18:20 -07:00

self.c

proc: don't allow async path resolution of /proc/self components

2020-12-02 08:29:27 +01:00

softirqs.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

stat.c

genirq: Prevent proc race against freeing of irq descriptors

2014-12-13 13:33:07 +01:00

task_mmu.c

coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping

2019-06-22 08:18:27 +02:00

task_nommu.c

fs/proc: Stop trying to report thread stacks

2018-04-08 11:52:00 +02:00

thread_self.c

proc: Use new_inode not new_inode_pseudo

2020-06-20 10:23:18 +02:00

uptime.c

cputime: Default implementation of nsecs -> cputime conversion

2014-03-13 15:56:43 +01:00

version.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

vmcore.c

proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()

2019-11-25 15:54:47 +01:00