Linus Torvalds 0097c18e45 A fix for a long standing issue in the alarmtimer code: ... Posix-timers armed with a short interval with an ignored signal result in an unpriviledged DoS. Due to the ignored signal the timer switches into self rearm mode. This issue had been "fixed" before but a rework of the alarmtimer code 5 years ago lost that workaround. There is no real good solution for this issue, which is also worked around in the core posix-timer code in the same way, but it certainly moved way up on the ever growing todo list. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmPxYIwTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYocQ5D/45vfKxvXsF0mCHPpF+Dgx96T3rzpXY aN/OeKWJ50A7IB5QKdxR3/VdDSuD6/HroFTfKTQIUVzkzAq47r7Ref7a0bgDsNbT SLTX8oBUA1ALKVew3wGo5qkY317xyGb2WPiSCzfjAZk07MplOzDRC4YYgEfnYAWW DzmzmkZQaAhKg3JONEB+kOas/E/T1MwTSs2NNJiY0hM6ATFK2+q2b706wjDHWspk QwjCfUCbrFKSxol+hSQgvQpzV18FmS328xU4Ht4pioflch0dv1/HDrml9OGrCCzs 8hEmCcjxFwM2FXTPIix8/Jn4S8ppZwYQCi10bBjjF+0N9s897s/4dom88EbfwjfB 4YpE62SI8VZIyK0JauSuRcCAfnN7BwfgL9UpS3MEgHq4K+fnydZOItBYI3Rg4JY/ hAKizX5VzBSAq/iUFC9+DFKjonOz3cCvY5xoPLPfCXukykbYfOCz1BiBqrTP7n1z /qWgDm+YvEyYNmoEqPjD5kktpHAvwGiMl6dmJJOUxaV6KNXWremykvI491oZK7fI P3eWMPhJwJV7ukjUF6Wc5ylwupsakf+x802MF03rgmajXtzxnnFATotb/21g9SSD /FYfdjS85CRArvYKuN59Yty8iMbjX4T1tRBaKgLYjpOdqgA6H6T3vmI+ShKS/FAM T92uQTZMpVm7+w== =s5VW -----END PGP SIGNATURE----- Merge tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Thomas Gleixner: "A fix for a long standing issue in the alarmtimer code. Posix-timers armed with a short interval with an ignored signal result in an unpriviledged DoS. Due to the ignored signal the timer switches into self rearm mode. This issue had been "fixed" before but a rework of the alarmtimer code 5 years ago lost that workaround. There is no real good solution for this issue, which is also worked around in the core posix-timer code in the same way, but it certainly moved way up on the ever growing todo list" * tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: alarmtimer: Prevent starvation by small intervals and SIG_IGN		2023-02-18 17:46:50 -08:00
..
bpf	bpf: Fix the kernel crash caused by bpf_setsockopt().	2023-01-26 23:26:40 -08:00
cgroup	cpuset: Call set_cpus_allowed_ptr() with appropriate mask for task	2023-02-06 10:18:36 -10:00
configs
debug
dma	dma-mapping: reject GFP_COMP for noncoherent allocations	2022-12-21 08:45:38 +01:00
entry
events	perf: Fix perf_event_pmu_context serialization	2023-01-31 20:37:18 +01:00
futex	- Prevent the leaking of a debug timer in futex_waitv()	2023-01-01 11:15:05 -08:00
gcov	gcov: add support for checksum field	2022-12-21 14:31:52 -08:00
irq	Char/Misc driver fixes for 6.2-rc7	2023-02-05 11:52:23 -08:00
kcsan	kcsan: test: don't put the expect array on the stack	2023-01-02 08:59:33 -08:00
livepatch	modules changes for v6.2-rc1	2022-12-13 14:05:39 -08:00
locking	rtmutex: Ensure that the top waiter is always woken up	2023-02-06 14:49:13 +01:00
module	module: Don't wait for GOING modules	2023-01-24 12:52:52 -08:00
power
printk	Merge branch 'rework/console-list-lock' into for-linus	2023-01-19 14:56:38 +01:00
rcu	Urgent RCU pull request for v6.2	2022-12-21 07:59:57 -08:00
sched	sched/psi: Fix use-after-free in ep_remove_wait_queue()	2023-02-15 14:19:16 +01:00
time	alarmtimer: Prevent starvation by small intervals and SIG_IGN	2023-02-14 11:18:35 +01:00
trace	tracing: Make trace_define_field_ext() static	2023-02-15 11:31:34 -08:00
.gitignore
acct.c
async.c
audit.c
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cfi.c
compat.c
configs.c
context_tracking.c
cpu.c
cpu_pm.c
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
exec_domain.c
exit.c	exit: Use READ_ONCE() for all oops/warn limit reads	2022-12-16 12:26:57 -08:00
extable.c
fail_function.c
fork.c	New Feature:	2022-12-17 14:06:53 -06:00
freezer.c
gen_kheaders.sh	kheaders: explicitly validate existence of cpio command	2023-01-18 16:34:04 +09:00
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kallsyms_internal.h
kallsyms_selftest.c	kallsyms: Fix scheduling with interrupts disabled in self-test	2023-01-13 15:09:08 -08:00
kallsyms_selftest.h
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c
kexec_elf.c
kexec_file.c
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	kprobes: kretprobe events missing on 2-core KVM guest	2022-12-15 08:48:40 +09:00
ksysfs.c
kthread.c
latencytop.c
Makefile	kernel hardening fixes for v6.2-rc1	2022-12-23 12:00:24 -08:00
module_signature.c
notifier.c
nsproxy.c
padata.c	Kbuild updates for v6.2	2022-12-19 12:33:32 -06:00
panic.c	kernel hardening fixes for v6.2-rc1	2022-12-23 12:00:24 -08:00
params.c	Driver Core changes for 6.2-rc1	2022-12-16 03:54:54 -08:00
pid.c
pid_namespace.c
profile.c
ptrace.c
range.c
reboot.c
regset.c
relay.c
resource.c	Driver Core changes for 6.2-rc1	2022-12-16 03:54:54 -08:00
resource_kunit.c
rseq.c
scftorture.c
scs.c
seccomp.c
signal.c	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c
stacktrace.c
static_call.c
static_call_inline.c
stop_machine.c
sys.c	prlimit: do_prlimit needs to have a speculation check	2023-01-21 16:14:17 +01:00
sys_ni.c
sysctl-test.c
sysctl.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
task_work.c
taskstats.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL	2023-02-13 16:36:14 +01:00
up.c
user-return-notifier.c
user.c
user_namespace.c
usermode_driver.c
utsname.c
utsname_sysctl.c
watch_queue.c
watchdog.c
watchdog_hld.c
workqueue.c
workqueue_internal.h