Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Odin Ugedal 2407794f22 cgroup: fix psi monitor for root cgroup ... commit 385aac1519417b89cb91b77c22e4ca21db563cd0 upstream. Fix NULL pointer dereference when adding new psi monitor to the root cgroup. PSI files for root cgroup was introduced in df5ba5be74 by using system wide psi struct when reading, but file write/monitor was not properly fixed. Since the PSI config for the root cgroup isn't initialized, the current implementation tries to lock a NULL ptr, resulting in a crash. Can be triggered by running this as root: $ tee /sys/fs/cgroup/cpu.pressure <<< "some 10000 1000000" Signed-off-by: Odin Ugedal <odin@uged.al> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Dan Schatzberg <dschatzberg@fb.com> Fixes: df5ba5be74 ("kernel/sched/psi.c: expose pressure metrics on root cgroup") Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: stable@vger.kernel.org # 5.2+ Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-02-17 10:35:14 +01:00
..
bpf	bpf: Fix 32 bit src register truncation on div/mod	2021-02-13 13:52:56 +01:00
cgroup	cgroup: fix psi monitor for root cgroup	2021-02-17 10:35:14 +01:00
configs
debug	kgdb: Make "kgdbcon" work properly with "kgdb_earlycon"	2020-11-05 11:43:16 +01:00
dma	swiotlb: fix "x86: Don't panic if can not alloc buffer for swiotlb"	2020-11-18 19:20:32 +01:00
events	exec: Transform exec_update_mutex into a rw_semaphore	2021-01-09 13:44:55 +01:00
gcov	gcov: add support for GCC 10.1	2020-09-17 13:47:56 +02:00
irq	genirq/msi: Activate Multi-MSI early when MSI_FLAG_ACTIVATE_EARLY is set	2021-02-10 09:25:30 +01:00
livepatch
locking	rtmutex: Remove unused argument from rt_mutex_proxy_unlock()	2021-01-30 13:54:09 +01:00
power	PM: hibernate: flush swap writer after marking	2021-02-03 23:25:57 +01:00
printk	printk: handle blank console arguments passed in.	2020-10-01 13:18:04 +02:00
rcu	arm64: smp: Tell RCU about CPUs that fail to come online	2020-11-24 13:29:01 +01:00
sched	sched: Reenable interrupts in do_sched_yield()	2020-12-30 11:51:03 +01:00
time	tick/sched: Remove bogus boot "safety" check	2021-01-06 14:48:40 +01:00
trace	tracing: Check length before giving out the filter buffer	2021-02-17 10:35:14 +01:00
.gitignore
acct.c
async.c
audit.c	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:30:59 +02:00
audit.h	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:30:59 +02:00
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit: CONFIG_CHANGE don't log internal bookkeeping as an event	2020-10-01 13:17:32 +02:00
auditfilter.c	audit: fix a net reference leak in audit_list_rules_send()	2020-06-22 09:30:59 +02:00
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c
configs.c
context_tracking.c
cpu.c	kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling	2020-12-30 11:50:56 +01:00
cpu_pm.c	kernel/cpu_pm: Fix uninitted local in cpu_pm	2020-06-22 09:31:22 +02:00
crash_core.c
crash_dump.c
cred.c	keys: Fix request_key() cache	2020-01-17 19:48:42 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c	don't dump the threads that had been already exiting when zapped.	2020-11-18 19:20:31 +01:00
extable.c
fail_function.c	fail_function: Remove a redundant mutex unlock	2020-11-24 13:29:18 +01:00
fork.c	exec: Transform exec_update_mutex into a rw_semaphore	2021-01-09 13:44:55 +01:00
freezer.c	Revert "libata, freezer: avoid block device removal while system is frozen"	2019-10-06 09:11:37 -06:00
futex.c	futex: Handle faults correctly for PI futexes	2021-01-30 13:54:10 +01:00
gen_kheaders.sh	kbuild: add variables for compression tools	2020-09-03 11:27:10 +02:00
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c	jump_label: Don't warn on __exit jump entries	2019-08-29 15:10:10 +01:00
kallsyms.c	kallsyms: Refactor kallsyms_show_value() to take cred	2020-07-16 08:16:44 +02:00
kcmp.c	exec: Transform exec_update_mutex into a rw_semaphore	2021-01-09 13:44:55 +01:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c	kernel: kexec: remove the lock operation of system_transition_mutex	2021-02-03 23:25:56 +01:00
kexec_elf.c	kexec_elf: support 32 bit ELF files	2019-09-06 23:58:44 +02:00
kexec_file.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
kexec_internal.h
kheaders.c
kmod.c	kmod: make request_module() return an error when autoloading is disabled	2020-04-17 10:50:22 +02:00
kprobes.c	tracing/kprobe: Fix to support kretprobe events on unloaded modules	2021-02-13 13:52:54 +01:00
ksysfs.c
kthread.c	kthread: Extract KTHREAD_IS_PER_CPU	2021-02-07 15:35:49 +01:00
latencytop.c
Makefile	elfcore: fix building with clang	2021-01-23 15:57:55 +01:00
module-internal.h
module.c	module: delay kobject uevent until after module init call	2021-01-06 14:48:40 +01:00
module_signature.c
module_signing.c
notifier.c	kernel/notifier.c: intercept duplicate registrations to avoid infinite loops	2020-10-01 13:17:23 +02:00
nsproxy.c
padata.c	padata: add separate cpuhp node for CPUHP_PADATA_DEAD	2020-06-17 16:40:22 +02:00
panic.c	panic: ensure preemption is disabled during panic()	2019-10-07 15:47:19 -07:00
params.c
pid.c
pid_namespace.c
profile.c
ptrace.c	ptrace: Set PF_SUPERPRIV when checking capability	2020-11-24 13:29:24 +01:00
range.c
reboot.c	reboot: fix overflow parsing reboot cpu number	2020-11-18 19:20:30 +01:00
relay.c	kernel/relay.c: fix memleak on destroy relay channel	2020-08-26 10:40:51 +02:00
resource.c	/dev/mem: Revoke mappings when a driver claims the region	2020-06-24 17:50:35 +02:00
rseq.c
seccomp.c	seccomp: Set PF_SUPERPRIV when checking capability	2020-11-24 13:29:24 +01:00
signal.c	ptrace: fix task_join_group_stop() for the case when current is traced	2020-11-10 12:37:24 +01:00
smp.c
smpboot.c	kthread: Extract KTHREAD_IS_PER_CPU	2021-02-07 15:35:49 +01:00
smpboot.h
softirq.c
stackleak.c
stacktrace.c	stacktrace: Don't skip first entry on noncurrent tasks	2019-11-04 21:19:25 +01:00
stop_machine.c	stop_machine: Avoid potential race behaviour	2019-10-17 12:47:12 +02:00
sys.c	kernel/sys.c: avoid copying possible padding bytes in copy_to_user	2020-10-01 13:17:23 +02:00
sys_ni.c
sysctl-test.c	kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()	2020-10-01 13:17:10 +02:00
sysctl.c	kernel: sysctl: make drop_caches write-only	2020-01-04 19:18:32 +01:00
sysctl_binary.c
task_work.c
taskstats.c	taskstats: fix data-race	2020-01-09 10:19:54 +01:00
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	usermodehelper: reset umask to default before executing user process	2020-10-14 10:32:58 +02:00
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c	watchdog/softlockup: Enforce that timestamp is valid on boot	2020-02-24 08:36:52 +01:00
watchdog_hld.c
workqueue.c	workqueue: Restrict affinity change to rescuer	2021-02-07 15:35:49 +01:00
workqueue_internal.h