Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Christian Brauner 67da5e102b UPSTREAM: clone3: add CLONE_CLEAR_SIGHAND ... Reset all signal handlers of the child not set to SIG_IGN to SIG_DFL. Mutually exclusive with CLONE_SIGHAND to not disturb other thread's signal handler. In the spirit of closer cooperation between glibc developers and kernel developers (cf. [2]) this patchset came out of a discussion on the glibc mailing list for improving posix_spawn() (cf. [1], [3], [4]). Kernel support for this feature has been explicitly requested by glibc and I see no reason not to help them with this. The child helper process on Linux posix_spawn must ensure that no signal handlers are enabled, so the signal disposition must be either SIG_DFL or SIG_IGN. However, it requires a sigprocmask to obtain the current signal mask and at least _NSIG sigaction calls to reset the signal handlers for each posix_spawn call or complex state tracking that might lead to data corruption in glibc. Adding this flags lets glibc avoid these problems. [1]: https://www.sourceware.org/ml/libc-alpha/2019-10/msg00149.html [3]: https://www.sourceware.org/ml/libc-alpha/2019-10/msg00158.html [4]: https://www.sourceware.org/ml/libc-alpha/2019-10/msg00160.html [2]: https://lwn.net/Articles/799331/ '[...] by asking for better cooperation with the C-library projects in general. They should be copied on patches containing ABI changes, for example. I noted that there are often times where C-library developers wish the kernel community had done things differently; how could those be avoided in the future? Members of the audience suggested that more glibc developers should perhaps join the linux-api list. The other suggestion was to "copy Florian on everything".' Cc: Florian Weimer <fweimer@redhat.com> Cc: libc-alpha@sourceware.org Cc: linux-api@vger.kernel.org Change-Id: Iced02ef93ed4dcda5ca5d3bd475cbfcae928fb19 Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Link: https://lore.kernel.org/r/20191014104538.3096-1-christian.brauner@ubuntu.com Signed-off-by: ralph950412 <ralph950412@gmail.com>		2026-07-09 09:06:38 -04:00
..
bpf	BACKPORT: ANDROID: fuse-bpf: Use fuse_bpf_args in uapi	2026-05-08 21:46:17 +02:00
cgroup	UPSTREAM: cgroup: remove redundant kernfs_activate in cgroup_setup_root()	2026-01-14 18:13:14 -08:00
configs
debug	BACKPORT: maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2026-01-14 18:13:21 -08:00
dma	Merge tag 'ASB-2024-10-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2024-10-09 18:08:17 +00:00
events	UPSTREAM: bpf: Fail PERF_EVENT_IOC_SET_BPF when bpf_get_[stack|stackid] cannot work	2026-01-14 18:12:08 -08:00
gcov	gcov: add support for GCC 15	2025-12-03 12:45:19 +01:00
irq	Merge branch 'android11-5.4-lts' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2025-10-08 15:23:13 +03:00
livepatch	UPSTREAM: ftrace: Introduce PERMANENT ftrace_ops flag	2025-12-23 13:35:45 -08:00
locking	Merge tag 'ASB-2025-06-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2025-06-30 10:49:17 +03:00
power	Merge tag 'ASB-2025-10-06_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2025-10-08 15:17:54 +03:00
printk	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
rcu	BACKPORT: rcu-tasks: Add a grace-period start time for throttling and debug	2026-01-14 18:13:22 -08:00
sched	UPSTREAM: sched/core: Add function to sample state of locked-down task	2026-01-14 18:13:18 -08:00
time	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
trace	FROMGIT: tracing: add error_report_end trace point	2026-05-07 17:24:05 +03:00
.gitignore
acct.c	acct: perform last write from workqueue	2025-03-13 12:43:26 +01:00
async.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
audit.c	audit: Send netlink ACK before setting connection in auditd_set	2024-02-23 08:24:54 +01:00
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()	2023-11-28 16:50:18 +00:00
auditfilter.c
auditsc.c	audit: fix possible soft lockup in __audit_inode_child()	2023-09-23 10:59:46 +02:00
backtracetest.c
bounds.c	bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS	2024-05-02 16:18:37 +02:00
capability.c
cfi.c
compat.c
configs.c
context_tracking.c
cpu.c	hrtimers: Handle CPU state correctly on hotplug	2025-02-01 18:18:51 +01:00
cpu_pm.c
crash_core.c
crash_dump.c
cred.c	Revert "cred: switch to using atomic_long_t"	2024-01-03 17:00:08 +00:00
delayacct.c
dma.c
exec_domain.c
exit.c	BACKPORT: seccomp: release filter after task is fully dead	2026-05-07 10:17:17 -04:00
extable.c	UPSTREAM: bpf: Remove bpf_image tree	2025-12-23 13:36:07 -08:00
fail_function.c
fork.c	UPSTREAM: clone3: add CLONE_CLEAR_SIGHAND	2026-07-09 09:06:38 -04:00
freezer.c
futex.c	Merge 5.4.246 into android11-5.4-lts	2023-06-20 19:13:58 +00:00
gen_kheaders.sh	Merge tag 'ASB-2025-03-05_11-5.4' into android13-5.4-lahaina	2025-04-12 09:31:28 +00:00
groups.c	BACKPORT: mm: remove the pgprot argument to __vmalloc	2026-01-14 17:48:09 -08:00
hung_task.c	kernel/hung_task.c: make type annotations consistent	2026-02-01 20:38:49 -08:00
iomem.c
irq_work.c	UPSTREAM: irq_work: Convert flags to atomic_t	2025-12-23 13:35:39 -08:00
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c	kexec: fix a memory leak in crash_shrink_memory()	2023-07-27 08:37:10 +02:00
kexec_elf.c	kexec: initialize ELF lowest address to ULONG_MAX	2025-04-10 14:29:41 +02:00
kexec_file.c	kexec: support purgatories with .text.hot sections	2023-06-21 15:44:10 +02:00
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
ksysfs.c
kthread.c	BACKPORT: maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2026-01-14 18:13:21 -08:00
latencytop.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
Makefile	UPSTREAM: bpf: Add kernel module with user mode driver that populates bpffs.	2026-01-14 18:12:16 -08:00
module-internal.h
module.c	BACKPORT: mm: remove the pgprot argument to __vmalloc	2026-01-14 17:48:09 -08:00
module_signature.c
module_signing.c
notifier.c
nsproxy.c
padata.c	padata: Reset next CPU when reorder sequence wraps around	2025-10-29 14:00:01 +01:00
panic.c	panic: Flush kernel log buffer at the end	2024-04-13 12:51:37 +02:00
params.c	module: ensure that kobject_put() is safe for module type kobjects	2025-06-04 14:32:27 +02:00
pid.c	Merge tag 'ASB-2025-12-01_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2025-12-04 19:21:35 +02:00
pid_namespace.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
profile.c
ptrace.c
range.c
reboot.c	This is the 5.4.262 stable release	2023-11-29 10:18:14 +00:00
relay.c
resource.c	resource: fix region_intersects() vs add_memory_driver_managed()	2024-11-08 16:20:46 +01:00
rseq.c
scs.c
seccomp.c	Reapply "UPSTREAM: seccomp: Remove bogus __user annotations"	2026-05-12 12:10:45 +02:00
signal.c	Merge tag 'ASB-2024-12-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2024-12-17 03:24:53 +02:00
smp.c	Merge tag 'ASB-2024-11-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina	2024-11-08 15:36:32 +00:00
smpboot.c
smpboot.h
softirq.c	Revert "tasklet: Introduce new initialization API"	2025-03-13 17:21:46 +00:00
stackleak.c	stackleak: let stack_erasing_sysctl take a kernel pointer buffer	2026-02-01 20:38:37 -08:00
stacktrace.c
stop_machine.c
sys.c	Merge 5.4.272 into android11-5.4-lts	2024-04-05 12:37:33 +00:00
sys_ni.c	BACKPORT: epoll: wire up syscall epoll_pwait2	2025-12-22 07:42:50 +02:00
sysctl-test.c
sysctl.c	bpf, sysctl: Let bpf_stats_handler take a kernel pointer buffer	2026-02-01 20:37:19 -08:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c	UPSTREAM: module: Fix up module_notifier return values	2026-01-14 18:12:53 -08:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	BACKPORT: umh: Separate the user mode driver and the user mode helper support	2026-01-14 18:12:14 -08:00
up.c
user-return-notifier.c
user.c
user_namespace.c
usermode_driver.c	UPSTREAM: bpf: Fix umd memory leak in copy_process()	2026-01-14 18:12:50 -08:00
utsname.c
utsname_sysctl.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
watchdog.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
watchdog_hld.c	watchdog/perf: properly initialize the turbo mode timestamp and rearm counter	2024-08-19 05:33:39 +02:00
workqueue.c	BACKPORT: maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2026-01-14 18:13:21 -08:00
workqueue_internal.h