Linus Torvalds
26bc672134
for-linus-2019-11-05 ...
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Merge tag 'for-linus-2019-11-05' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull clone3 stack argument update from Christian Brauner:
"This changes clone3() to do basic stack validation and to set up the
stack depending on whether or not it is growing up or down.
With clone3() the expectation is now very simply that the .stack
argument points to the lowest address of the stack and that
.stack_size specifies the initial stack size. This is diferent from
legacy clone() where the "stack" argument had to point to the lowest
or highest address of the stack depending on the architecture.
clone3() was released with 5.3. Currently, it is not documented and
very unclear to userspace how the stack and stack_size argument have
to be passed. After talking to glibc folks we concluded that changing
clone3() to determine stack direction and doing basic validation is
the right course of action.
Note, this is a potentially user visible change. In the very unlikely
case, that it breaks someone's use-case we will revert. (And then e.g.
place the new behavior under an appropriate flag.)
Note that passing an empty stack will continue working just as before.
Breaking someone's use-case is very unlikely. Neither glibc nor musl
currently expose a wrapper for clone3(). There is currently also no
real motivation for anyone to use clone3() directly. First, because
using clone{3}() with stacks requires some assembly (see glibc and
musl). Second, because it does not provide features that legacy
clone() doesn't. New features for clone3() will first happen in v5.5
which is why v5.4 is still a good time to try and make that change now
and backport it to v5.3.
I did a codesearch on https://codesearch.debian.net , github, and
gitlab and could not find any software currently relying directly on
clone3(). I expect this to change once we land CLONE_CLEAR_SIGHAND
which was a request coming from glibc at which point they'll likely
start using it"
* tag 'for-linus-2019-11-05' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
clone3: validate stack arguments
2019-11-05 09:44:02 -08:00
bpf: Fix use after free in bpf_get_prog_name
2019-10-22 21:59:49 -07:00
sched/topology: Don't try to build empty sched domains
2019-10-29 09:58:45 +01:00
kgdb: don't use a notifier to enter kgdb at panic; call directly
2019-09-25 17:51:40 -07:00
dma-mapping: fix false positivse warnings in dma_common_free_remap()
2019-10-05 10:24:17 +02:00
perf/core: Start rejecting the syscall with attr.__reserved_2 set
2019-10-28 11:01:59 +01:00
um: Enable CONFIG_CONSTRUCTORS
2019-09-15 21:37:13 +02:00
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
livepatch: Nullify obj->mod in klp_module_coming()'s error path
2019-08-19 13:03:37 +02:00
Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"
2019-09-25 10:22:37 +02:00
PM: QoS: Introduce frequency QoS
2019-10-21 02:05:21 +02:00
Merge branch 'for-5.4' into for-linus
2019-09-16 12:54:25 +02:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-09-16 17:25:49 -07:00
sched/topology: Allow sched_asym_cpucapacity to be disabled
2019-10-29 09:58:46 +01:00
posix-cpu-timers: Fix two trivial comments
2019-10-23 14:48:24 +02:00
tracing: Fix race in perf_trace_buf initialization
2019-10-21 19:38:28 -04:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
audit/stable-5.3 PR 20190702
2019-07-08 18:55:42 -07:00
audit/stable-5.3 PR 20190702
2019-07-08 18:55:42 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
audit/stable-5.3 PR 20190702
2019-07-08 18:55:42 -07:00
audit: enforce op for string fields
2019-05-28 17:46:43 -04:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
kernel/configs: Replace GPL boilerplate code with SPDX identifier
2019-07-30 18:34:15 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
cpu/SMT: create and export cpu_smt_possible()
2019-09-24 13:37:28 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Merge branch 'access-creds'
2019-07-25 08:36:29 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25
2019-05-21 11:52:39 +02:00
kernel/elfcore.c: include proper prototypes
2019-09-25 17:51:39 -07:00
tasks, sched/core: With a grace period after finish_task_switch(), remove unnecessary code
2019-09-25 17:42:29 +02:00
extable: Add function to search only kernel exception table
2019-08-21 22:23:48 +10:00
fail_function: no need to check return value of debugfs_create functions
2019-06-03 15:49:06 +02:00
clone3: validate stack arguments
2019-11-05 15:50:14 +01:00
Revert "libata, freezer: avoid block device removal while system is frozen"
2019-10-06 09:11:37 -06:00
hrtimer/treewide: Use hrtimer_sleeper_start_expires()
2019-08-01 17:43:16 +02:00
kheaders: substituting --sort in archive creation
2019-10-17 09:08:19 +09:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
2019-07-12 11:05:40 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
jump_label: Don't warn on __exit jump entries
2019-08-29 15:10:10 +01:00
kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol
2019-08-27 16:19:56 +01:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y
2019-07-22 18:05:11 +02:00
kexec_load: Disable at runtime if the kernel is locked down
2019-08-19 21:54:15 -07:00
kexec: bail out upon SIGKILL when allocating memory.
2019-09-25 17:51:40 -07:00
kexec_elf: support 32 bit ELF files
2019-09-06 23:58:44 +02:00
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
kheaders: Move from proc to sysfs
2019-05-24 20:16:01 +02:00
Tracing updates:
2019-09-20 11:19:48 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 170
2019-05-30 11:26:39 -07:00
kthread: make __kthread_queue_delayed_work static
2019-10-16 09:20:58 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2019-09-27 19:37:27 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
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
MODSIGN: Export module signature definitions
2019-08-05 18:39:56 -04:00
MODSIGN: Export module signature definitions
2019-08-05 18:39:56 -04:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
padata: remove cpu_index from the parallel_queue
2019-09-13 21:15:41 +10:00
panic: ensure preemption is disabled during panic()
2019-10-07 15:47:19 -07:00
lockdown: Lock down module params that specify hardware parameters (eg. ioport)
2019-08-19 21:54:16 -07:00
kernel/pid.c: convert struct pid count to refcount_t
2019-07-16 19:23:24 -07:00
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
ptrace: add PTRACE_GET_SYSCALL_INFO request
2019-07-16 19:23:24 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mm/memory_hotplug.c: use PFN_UP / PFN_DOWN in walk_system_ram_range()
2019-09-24 15:54:09 -07:00
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
signal: Remove the signal number and task parameters from force_sig_info
2019-05-29 09:31:44 -05:00
core-process-v5.4
2019-09-16 09:28:19 -07:00
smp: Warn on function calls from softirq context
2019-07-20 11:27:16 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
stacktrace: Constify 'entries' arguments
2019-07-25 15:43:26 +02:00
stop_machine: Avoid potential race behaviour
2019-10-17 12:47:12 +02:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-09-17 12:35:15 -07:00
arch: handle arches who do not yet define clone3
2019-06-21 01:54:53 +02:00
parisc: sysctl.c: Use CONFIG_PARISC instead of __hppa_ define
2019-10-14 21:43:54 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25
2019-05-21 11:52:39 +02:00
torture: Remove exporting of internal functions
2019-08-01 14:30:22 -07:00
The main changes in this release include:
2019-07-18 11:51:00 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
smp: Remove smp_call_function() and on_each_cpu() return values
2019-06-23 14:26:26 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Keyrings namespacing
2019-07-08 19:36:47 -07:00
Keyrings namespacing
2019-07-08 19:36:47 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
watchdog: Mark watchdog_hrtimer to expire in hard interrupt context
2019-08-01 20:51:20 +02:00
workqueue: require CPU hotplug read exclusion for apply_workqueue_attrs
2019-09-13 21:15:40 +10:00
26bc672134