linux/security/tomoyo
Luigi Rizzo 5b78ed24e8 mm/pagemap: add mmap_assert_locked() annotations to find_vma*()
find_vma() and variants need protection when used.  This patch adds
mmap_assert_lock() calls in the functions.

To make sure the invariant is satisfied, we also need to add a
mmap_read_lock() around the get_user_pages_remote() call in
get_arg_page().  The lock is not strictly necessary because the mm has
been newly created, but the extra cost is limited because the same mutex
was also acquired shortly before in __bprm_mm_init(), so it is hot and
uncontended.

[penguin-kernel@i-love.sakura.ne.jp: TOMOYO needs the same protection which get_arg_page() needs]
  Link: https://lkml.kernel.org/r/58bb6bf7-a57e-8a40-e74b-39584b415152@i-love.sakura.ne.jp

Link: https://lkml.kernel.org/r/20210731175341.3458608-1-lrizzo@google.com
Signed-off-by: Luigi Rizzo <lrizzo@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-03 09:58:13 -07:00
..
policy
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
audit.c tomoyo: fix doc warnings 2021-06-16 00:01:28 +09:00
common.c tomoyo: Fix typo in comments. 2020-12-06 13:44:57 +09:00
common.h exec: Implement kernel_execve 2020-07-21 08:24:52 -05:00
condition.c tomoyo: Fix typo in comments. 2020-12-06 13:44:57 +09:00
domain.c mm/pagemap: add mmap_assert_locked() annotations to find_vma*() 2021-09-03 09:58:13 -07:00
environ.c
file.c tomoyo: ignore data race while checking quota 2021-02-01 11:52:11 +09:00
gc.c tomoyo: Fix typo in comments. 2020-12-06 13:44:57 +09:00
group.c tomoyo: Suppress RCU warning at list_for_each_entry_rcu(). 2019-12-16 23:02:27 +09:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
load_policy.c tomoyo: Coding style fix. 2019-01-24 14:50:27 -08:00
Makefile kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
memory.c tomoyo: Fix null pointer check 2020-11-27 19:36:11 +09:00
mount.c tomoyo: Coding style fix. 2019-01-24 14:50:27 -08:00
network.c tomoyo: don't special case PF_IO_WORKER for PF_KTHREAD 2021-03-28 13:11:29 +09:00
realpath.c proc: proc_pid_ns takes super_block as an argument 2020-05-19 07:07:50 -05:00
securityfs_if.c tomoyo: fix doc warnings 2021-06-16 00:01:28 +09:00
tomoyo.c tomoyo: fix doc warnings 2021-06-16 00:01:28 +09:00
util.c tomoyo: fix doc warnings 2021-06-16 00:01:28 +09:00