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linux/fs/proc
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Kees Cook ec7c20d417 Revert "proc/wchan: use printk format instead of lookup_symbol_name()" 
commit 54354c6a9f7fd5572d2b9ec108117c4f376d4d23 upstream.

This reverts commit 152c432b128cb043fc107e8f211195fe94b2159c.

When a kernel address couldn't be symbolized for /proc/$pid/wchan, it
would leak the raw value, a potential information exposure. This is a
regression compared to the safer pre-v5.12 behavior.

Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Vito Caputo <vcaputo@pengaru.com>
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20211008111626.090829198@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-12 15:05:48 +01:00
..
array.c
proc: stop using seq_get_buf in proc_task_name
2021-09-08 11:50:25 -07:00
base.c
Revert "proc/wchan: use printk format instead of lookup_symbol_name()"
2021-11-12 15:05:48 +01:00
bootconfig.c
bootconfig: Change array value to use child node
2021-06-10 13:38:25 -04:00
cmdline.c
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
consoles.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191
2019-05-30 11:29:21 -07:00
cpuinfo.c
proc/cpuinfo: switch to ->read_iter
2020-11-06 10:05:18 -08:00
devices.c
block: move block-related definitions out of fs.h
2020-06-24 09:16:02 -06:00
fd.c
procfs/dmabuf: add inode number to /proc/*/fdinfo
2021-07-01 11:06:04 -07:00
fd.h
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
generic.c
proc: save LOC in __xlate_proc_name()
2021-05-06 19:24:11 -07:00
inode.c
proc: delete redundant subset=pid check
2021-05-06 19:24:11 -07:00
internal.h
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
interrupts.c
proc: introduce proc_create_seq{,_data}
2018-05-16 07:23:35 +02:00
Kconfig
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
kcore.c
fs/proc/kcore: use page_offline_(freeze|thaw)
2021-06-30 20:47:28 -07:00
kmsg.c
proc: faster open/read/close with "permanent" files
2020-04-07 10:43:42 -07:00
loadavg.c
sched: Make nr_running() return 32-bit value
2021-05-12 21:34:14 +02:00
Makefile
proc: bootconfig: Add /proc/bootconfig to show boot config list
2020-01-13 13:19:39 -05:00
meminfo.c
mm: memcontrol: convert NR_FILE_PMDMAPPED account to pages
2021-02-24 13:38:29 -08:00
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
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
page.c
mm: Add PG_arch_2 page flag
2020-09-04 12:46:06 +01:00
proc_net.c
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
proc_sysctl.c
Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-07-03 11:41:14 -07:00
proc_tty.c
tty: replace ->proc_fops with ->proc_show
2018-05-16 07:24:30 +02:00
root.c
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
self.c
Revert "proc: don't allow async path resolution of /proc/self components"
2021-02-23 20:32:11 -07:00
softirqs.c
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
stat.c
sched: Make nr_iowait() return 32-bit value
2021-05-12 21:34:15 +02:00
task_mmu.c
mm: remove VM_DENYWRITE
2021-09-03 18:42:01 +02:00
task_nommu.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
thread_self.c
Revert "proc: don't allow async path resolution of /proc/thread-self components"
2021-02-23 20:32:11 -07:00
uptime.c
fs/proc: Respect boottime inside time namespace for /proc/uptime
2020-01-14 12:20:56 +01:00
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: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
vmcore.c
vmalloc: remove redundant NULL check
2021-02-24 13:38:30 -08:00