Peter Xu 4980e837ca mm/pagemap: fix wr-protect even if PM_SCAN_WP_MATCHING not set ...

The new pagemap ioctl contains a fast path for wr-protections without
looking into category masks.  It forgets to check PM_SCAN_WP_MATCHING
before applying the wr-protections.  It can cause, e.g., pte markers
installed on archs that do not even support uffd wr-protect.

WARNING: CPU: 0 PID: 5059 at mm/memory.c:1520 zap_pte_range mm/memory.c:1520 [inline]

Link: https://lkml.kernel.org/r/20231116201547.536857-3-peterx@redhat.com
Fixes: 12f6b01a0bcb ("fs/proc/task_mmu: add fast paths to get/clear PAGE_IS_WRITTEN flag")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: syzbot+7ca4b2719dc742b8d0a4@syzkaller.appspotmail.com
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Andrei Vagin <avagin@gmail.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2023-12-06 16:12:45 -08:00

..

array.c

fs/proc: do_task_stat: use __for_each_thread()

2023-10-04 10:41:57 -07:00

base.c

As usual, lots of singleton and doubleton patches all over the tree and

2023-11-02 20:53:31 -10:00

bootconfig.c

fs/proc: Add boot loader arguments as comment to /proc/bootconfig

2023-10-07 10:45:56 +09:00

cmdline.c

proc: mark /proc/cmdline as permanent

2023-02-02 22:50:02 -08:00

consoles.c

proc: consoles: use console_list_lock for list iteration

2022-12-02 11:25:02 +01:00

cpuinfo.c

x86/aperfmperf: Replace aperfmperf_get_khz()

2022-04-27 20:22:19 +02:00

devices.c

proc: mark more files as permanent

2022-10-03 14:21:45 -07:00

fd.c

file: convert to SLAB_TYPESAFE_BY_RCU

2023-10-19 11:02:48 +02:00

fd.h

fs: port ->permission() to pass mnt_idmap

2023-01-19 09:24:28 +01:00

generic.c

fs: pass the request_mask to generic_fillattr

2023-08-09 08:56:36 +02:00

inode.c

As usual, lots of singleton and doubleton patches all over the tree and

2023-11-02 20:53:31 -10:00

internal.h

proc: nommu: fix empty /proc/<pid>/maps

2023-09-19 13:21:34 -07:00

interrupts.c

proc: introduce proc_create_seq{,_data}

2018-05-16 07:23:35 +02:00

Kconfig

proc: make config PROC_CHILDREN depend on PROC_FS

2022-10-03 14:21:43 -07:00

kcore.c

proc/kcore: do not try to access unaccepted memory

2023-10-04 10:32:22 -07:00

kmsg.c

printk changes for 6.1

2022-10-10 11:24:19 -07:00

loadavg.c

proc: mark more files as permanent

2022-10-03 14:21:45 -07:00

Makefile

proc: bootconfig: Add /proc/bootconfig to show boot config list

2020-01-13 13:19:39 -05:00

meminfo.c

mm: memtest: convert to memtest_report_meminfo()

2023-08-21 13:37:47 -07:00

namespaces.c

Merge branch 'work.openat2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2020-01-29 11:20:24 -08:00

nommu.c

fs: create helper file_user_path() for user displayed mapped file path

2023-10-19 11:03:15 +02:00

page.c

mm, pagemap: remove SLOB and SLQB from comments and documentation

2023-03-29 10:32:11 +02:00

proc_net.c

v6.6-fs.proc.uapi

2023-08-28 11:43:19 -07:00

proc_sysctl.c

sysctl-6.7-rc1

2023-11-01 20:51:41 -10:00

proc_tty.c

proc: delete unused <linux/uaccess.h> includes

2022-07-17 17:31:39 -07:00

root.c

fs: super: dynamically allocate the s_shrink

2023-10-04 10:32:26 -07:00

self.c

proc: convert to new timestamp accessors

2023-10-18 14:08:26 +02:00

softirqs.c

proc: mark more files as permanent

2022-10-03 14:21:45 -07:00

stat.c

proc/stat: remove arch_idle_time()

2023-04-18 16:39:33 -07:00

task_mmu.c

mm/pagemap: fix wr-protect even if PM_SCAN_WP_MATCHING not set

2023-12-06 16:12:45 -08:00

task_nommu.c

vfs-6.7.misc

2023-10-30 09:14:19 -10:00

thread_self.c

proc: convert to new timestamp accessors

2023-10-18 14:08:26 +02:00

uptime.c

proc: mark more files as permanent

2022-10-03 14:21:45 -07:00

util.c

fs/proc/util.c: include fs/proc/internal.h for name_to_int()

2019-01-04 13:13:45 -08:00

version.c

proc: mark more files as permanent

2022-10-03 14:21:45 -07:00

vmcore.c

proc/vmcore: fix signedness bug in read_from_oldmem()

2023-07-27 13:07:05 -07:00