Vincent Donnefort 6365c44a82 ring-buffer: Allow splice reads on static buffers ...

ring_buffer_read_page() rejects splice (full=1) reads on static buffers
(that is user-mapped, persistent or remote) because !read check assumes
unread pages must be swapped. However for those buffers we have no other
choice than memcpy the data.

For the memcpy case, only return an error when the writer is still on
the reader page for the splice interface to wait.

Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260901155445.1475405-2-vdonnefort@google.com
Fixes: 117c39200d ("ring-buffer: Introducing ring-buffer mapping functions")
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2026-09-03 10:40:16 -04:00

..

bpf

Merge tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2026-08-20 07:36:20 -07:00

cgroup

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

2026-08-21 11:48:54 -07:00

configs

slab: support for compiler-assisted type-based slab cache partitioning

2026-05-14 10:44:09 +02:00

debug

kgdb: update outdated references to kgdb_wait()

2026-04-21 16:41:54 +01:00

dma

Merge tag 'dma-mapping-7.3-2026-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

2026-08-27 12:14:19 -07:00

entry

entry: Rework trace_syscall_enter()

2026-07-20 20:38:40 +02:00

events

Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-27 09:17:06 -07:00

futex

Merge tag 'locking-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-22 16:29:20 -07:00

gcov

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-21 20:03:00 -08:00

irq

Merge tag 'net-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2026-08-20 08:16:04 -07:00

kcsan

kcsan: avoid unintended access checking in NMIs

2026-07-20 18:18:37 +02:00

livepatch

livepatch: Fix NULL pointer dereference in klp_find_func()

2026-07-07 12:54:37 +02:00

liveupdate

Merge tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux

2026-08-23 09:17:38 -07:00

locking

Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-27 09:17:06 -07:00

module

module: validate string table section types

2026-08-06 16:44:45 +02:00

power

PM: sleep: Allow disabling DPM watchdog by default

2026-07-23 15:46:34 +02:00

printk

Merge branch 'for-7.3-console-registration-cleanup' into for-linus

2026-08-19 10:00:46 +02:00

rcu

Merge tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

2026-08-23 18:00:22 -07:00

sched

Merge tag 'locking-urgent-2026-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-30 09:57:35 -07:00

time

Merge tag 's390-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2026-08-23 10:26:44 -07:00

trace

ring-buffer: Allow splice reads on static buffers

2026-09-03 10:40:16 -04:00

unwind

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-21 20:03:00 -08:00

.gitignore

kheaders: rebuild kheaders_data.tar.xz when a file is modified within a minute

2025-06-24 20:30:37 +09:00

acct.c

fs: move SB_I_USERNS_VISIBLE to FS_USERNS_MOUNT_RESTRICTED

2026-05-11 23:13:01 +02:00

async.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

audit_fsnotify.c

audit: fix recursive locking deadlock in audit_dupe_exe()

2026-05-27 19:15:34 -04:00

audit_tree.c

audit: use 'unsigned int' instead of 'unsigned'

2026-05-26 17:15:30 -04:00

audit_watch.c

audit: drop BUG_ON() from audit_add_to_parent()

2026-07-28 15:53:48 -04:00

audit.c

audit: fix potential integer overflow in audit_log_n_string()

2026-07-29 16:19:06 -04:00

audit.h

audit: fix recursive locking deadlock in audit_dupe_exe()

2026-05-27 19:15:34 -04:00

auditfilter.c

Merge tag 'audit-pr-20260814' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2026-08-19 16:21:32 -07:00

auditsc.c

audit: drop BUG_ON() from audit_signal_info_syscall()

2026-07-28 15:53:49 -04:00

backtracetest.c

…

bounds.c

x86/asm: Remove ANNOTATE_DATA_SPECIAL usage

2025-12-03 16:53:19 +01:00

capability.c

capability: Remove unused has_capability

2025-03-07 22:03:09 -06:00

cfi.c

cfi: Move BPF CFI types and helpers to generic code

2025-07-31 18:23:53 -07:00

compat.c

…

configs.c

…

context_tracking.c

context_tracking: Remove rcu_task_trace_heavyweight_{enter,exit}()

2026-01-01 16:39:46 +08:00

cpu_pm.c

syscore: Pass context data to callbacks

2025-11-14 10:01:52 +01:00

cpu.c

Merge tag 'smp-urgent-2026-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-06-23 16:43:24 -07:00

crash_core_test.c

crash: add KUnit tests for crash_exclude_mem_range

2025-09-13 17:32:55 -07:00

crash_core.c

powerpc/kexec_file: Use crash_exclude_core_ranges() helper

2026-06-30 18:49:06 +03:00

crash_dump_dm_crypt.c

crash_dump: release keyring reference at the correct time

2026-07-13 10:04:47 +03:00

crash_reserve.c

kernel/crash: remove inclusion of crypto/sha1.h

2026-03-27 21:19:46 -07:00

cred.c

exec_state: relocate dumpable information

2026-05-26 11:02:01 +02:00

delayacct.c

sysctl: remove CONFIG_PROC_SYSCTL, it just mirrors CONFIG_SYSCTL

2026-08-05 15:28:23 +02:00

dma.c

…

elfcorehdr.c

…

exec_domain.c

…

exec_state.c

exec_state: relocate dumpable information

2026-05-26 11:02:01 +02:00

exit.c

Merge tag 'locking-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-22 16:29:20 -07:00

exit.h

…

extable.c

…

fail_function.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

fork.c

Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-23 08:07:11 -07:00

freezer.c

freezer: Clarify that only cgroup1 freezer uses PM freezer

2025-10-30 20:10:27 +01:00

gen_kheaders.sh

kheaders: make it possible to override TAR

2025-08-06 10:23:36 +09:00

groups.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

hung_task.c

hung_task: explicitly report I/O wait state in log output

2026-03-27 21:19:40 -07:00

iomem.c

mm/memremap: Pass down MEMREMAP_* flags to arch_memremap_wb()

2025-02-21 15:05:38 +01:00

irq_work.c

irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT

2026-05-11 16:28:04 +02:00

jump_label.c

jump_label: use ATOMIC_INIT() for initialization of .enabled

2026-03-16 13:16:48 +01:00

kallsyms_internal.h

kallsyms: Get rid of kallsyms relative base

2026-01-22 15:58:22 -07:00

kallsyms_selftest.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

kallsyms_selftest.h

…

kallsyms.c

Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-02-12 12:13:01 -08:00

kcmp.c

fs: add real_fs to track task's actual fs_struct

2026-06-29 10:43:45 +02:00

Kconfig.freezer

…

Kconfig.hz

kernel: Fix "select" wording on HZ_250 description

2025-02-21 09:20:30 +01:00

Kconfig.kexec

liveupdate: kho: move to kernel/liveupdate

2025-11-27 14:24:33 -08:00

Kconfig.locks

locking/qspinlock: Add contended_release tracepoint

2026-08-07 17:58:10 +02:00

Kconfig.preempt

Merge tag 'sched_ext-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

2026-08-20 11:01:37 -07:00

kcov.c

Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-23 08:07:11 -07:00

kexec_core.c

liveupdate: skip serialization for context-preserving kexec

2026-06-01 09:19:38 +03:00

kexec_elf.c

kexec: initialize ELF lowest address to ULONG_MAX

2025-03-16 22:30:47 -07:00

kexec_file.c

kexec_file: skip checksum verification when safe

2026-07-01 13:01:08 +03:00

kexec_internal.h

kexec: enable CMA based contiguous allocation

2025-08-02 12:01:38 -07:00

kexec.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

kheaders.c

kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()

2024-12-24 09:46:49 +01:00

kprobes.c

kprobes: Remove unneeded warnings from __arm_kprobe_ftrace()

2026-03-13 23:15:26 +09:00

kstack_erase.c

sysctl: remove __user qualifier from stack_erasing_sysctl buffer argument

2025-11-27 15:44:53 +01:00

ksyms_common.c

…

ksysfs.c

kernel: ksysfs: initialize kernel_kobj earlier

2026-04-03 19:39:52 +02:00

kthread.c

exec_state: relocate dumpable information

2026-05-26 11:02:01 +02:00

latencytop.c

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

Makefile

exec: introduce struct task_exec_state

2026-05-26 11:02:01 +02:00

module_signature.c

module: Give 'enum pkey_id_type' a more specific name

2026-03-24 21:42:37 +00:00

notifier.c

reboot: move reboot_notifier_list to kernel/reboot.c

2024-11-05 17:12:31 -08:00

nscommon.c

nsfs: tighten permission checks for ns iteration ioctls

2026-02-27 22:00:08 +01:00

nsproxy.c

Merge tag 'vfs-7.1-rc1.mount.v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-04-14 19:59:25 -07:00

nstree.c

nstree: tighten permission checks for listing

2026-02-27 22:00:11 +01:00

padata.c

padata: Put CPU offline callback in ONLINE section to allow failure

2026-03-22 11:17:59 +09:00

panic.c

bug/kunit: Core support for suppressing warning backtraces

2026-05-14 10:50:00 -06:00

params.c

Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-23 08:07:11 -07:00

pid_namespace.c

pid_namespace: allow opening pid_for_children before init was created

2026-03-20 14:44:26 +01:00

pid_sysctl.h

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

pid.c

Merge tag 'sysctl-7.03-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2026-08-20 08:46:41 -07:00

profile.c

…

ptrace.c

exec_state: relocate dumpable information

2026-05-26 11:02:01 +02:00

range.c

…

reboot.c

sysctl: move the "cad_pid" entry from pid_table[] to kern_reboot_table[]

2026-08-05 15:28:23 +02:00

regset.c

…

relay.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

resource_kunit.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

resource.c

resource: downgrade "resource sanity check" warning to debug level

2026-08-03 21:10:05 -07:00

rseq.c

rseq: Reenable performance optimizations conditionally

2026-05-06 17:40:27 +02:00

scftorture.c

Merge tag 'scftorture.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

2026-08-23 19:28:04 -07:00

scs.c

scs: fix a wrong parameter in __scs_magic

2025-11-12 10:00:13 -08:00

seccomp.c

seccomp, treewide: Rename and convert __secure_computing() to return boolean

2026-07-12 12:38:02 +02:00

signal.c

signal: factor out the kernel reserved si_code check

2026-08-13 15:42:08 -07:00

smp.c

Merge tag 'smp-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-18 15:29:53 -07:00

smpboot.c

sched/smp: Use the SMP version of idle_thread_set_boot_cpu()

2025-06-13 08:47:20 +02:00

smpboot.h

…

softirq.c

preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS

2026-08-10 10:50:19 +02:00

stacktrace.c

…

static_call_inline.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

static_call.c

…

stop_machine.c

stop_machine: Make stop_one_cpu_nowait() return void

2026-07-31 12:35:26 +02:00

sys_ni.c

time: Respect COMPAT_32BIT_TIME for old time type functions

2026-07-07 23:52:53 +02:00

sys.c

prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator

2026-08-19 19:55:05 -07:00

sysctl-test.c

sysctl: move u8 register test to lib/test_sysctl.c

2025-04-14 14:13:41 +02:00

sysctl.c

sysctl: remove CONFIG_PROC_SYSCTL, it just mirrors CONFIG_SYSCTL

2026-08-05 15:28:23 +02:00

task_work.c

task_work: Fix NMI race condition

2025-10-29 10:29:54 +01:00

taskstats.c

taskstats: fold the two cpumask handlers into one

2026-08-13 15:42:05 -07:00

torture.c

torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start

2026-08-14 14:59:21 -07:00

tracepoint.c

tracepoint: balance regfunc() on func_add() failure in tracepoint_add_func()

2026-04-14 05:17:02 -04:00

tsacct.c

tsacct: skip all kernel threads

2026-01-26 19:07:13 -08:00

ucount.c

binfmt_misc: correctly account pre-opened interpreters

2026-08-03 23:36:18 +02:00

uid16.c

…

uid16.h

…

umh.c

fs: add umh argument to struct kernel_clone_args

2026-06-29 10:54:41 +02:00

up.c

smp: Refactor remote CPU selection in smp_call_function_any()

2026-07-16 09:24:55 +02:00

user_namespace.c

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22 08:26:33 -08:00

user-return-notifier.c

…

user.c

binfmt_misc: use RCU for the handler lookup

2026-08-03 10:08:36 +02:00

utsname_sysctl.c

sysctl: remove CONFIG_PROC_SYSCTL, it just mirrors CONFIG_SYSCTL

2026-08-05 15:28:23 +02:00

utsname.c

Merge tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2025-09-29 11:20:29 -07:00

vhost_task.c

vhost_task_create: kill unnecessary .exit_signal initialization

2026-06-10 02:17:00 -04:00

vmcore_info.c

Merge tag 'mm-nonmm-stable-2026-04-15-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-04-16 20:11:56 -07:00

watch_queue.c

Convert 'alloc_flex' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

watchdog_buddy.c

watchdog/hardlockup: improve buddy system detection timeliness

2026-03-27 21:19:47 -07:00

watchdog_perf.c

watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency

2026-02-08 00:13:35 -08:00

watchdog.c

watchdog/softlockup: fix softlockup typos

2026-08-03 21:10:06 -07:00

workqueue_internal.h

workqueue: Show in-flight work item duration in stall diagnostics

2026-03-05 07:27:48 -10:00

workqueue.c

Merge tag 'nfs-for-7.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2026-08-26 15:09:21 -07:00