Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Eric W. Biederman f8d9c9824e UPSTREAM: umd: Transform fork_usermode_blob into fork_usermode_driver ... Instead of loading a binary blob into a temporary file with shmem_kernel_file_setup load a binary blob into a temporary tmpfs filesystem. This means that the blob can be stored in an init section and discared, and it means the binary blob will have a filename so can be executed normally. The only tricky thing about this code is that in the helper function blob_to_mnt __fput_sync is used. That is because a file can not be executed if it is still open for write, and the ordinary delayed close for kernel threads does not happen soon enough, which causes the following exec to fail. The function umd_load_blob is not called with any locks so this should be safe. Executing the blob normally winds up correcting several problems with the user mode driver code discovered by Tetsuo Handa[1]. By passing an ordinary filename into the exec, it is no longer necessary to figure out how to turn a O_RDWR file descriptor into a properly referende counted O_EXEC file descriptor that forbids all writes. For path based LSMs there are no new special cases. [1] https://lore.kernel.org/linux-fsdevel/2a8775b4-1dd5-9d5c-aa42-9872445e0942@i-love.sakura.ne.jp/ v1: https://lkml.kernel.org/r/87d05mf0j9.fsf_-_@x220.int.ebiederm.org v2: https://lkml.kernel.org/r/87wo3p4p35.fsf_-_@x220.int.ebiederm.org Link: https://lkml.kernel.org/r/20200702164140.4468-8-ebiederm@xmission.com Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Alexei Starovoitov <ast@kernel.org> Change-Id: I635aa4bb2fc2d6fed9deb0a386068f8e3e247365 Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>		2026-01-14 18:12:15 -08:00
..
bpf	UPSTREAM: bpf: Add BPF program and map iterators as built-in BPF programs.	2026-01-14 18:12:14 -08:00
cgroup	UPSTREAM: bpf: Refactor bpf_link update handling	2025-12-23 13:36:15 -08:00
configs
debug	kdb: Use the passed prompt in kdb_position_cursor()	2024-08-19 05:33:40 +02:00
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	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
sched	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
time	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
trace	UPSTREAM: bpf: Separate bpf_get_[stack|stackid] for perf events BPF	2026-01-14 18:12:08 -08:00
.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: fix potential double free on error path from fsnotify_add_inode_mark	2022-09-05 10:27:38 +02:00
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	treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()	2023-04-20 12:07:32 +02:00
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	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-04-05 11:16:42 +02:00
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: umh: Separate the user mode driver and the user mode helper support	2026-01-14 18:12:14 -08:00
extable.c	UPSTREAM: bpf: Remove bpf_image tree	2025-12-23 13:36:07 -08:00
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-03-11 16:44:15 +01:00
fork.c	UPSTREAM: close_range(): fix the logics in descriptor table trimming	2025-12-22 04:28:18 +02:00
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
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	kheaders: Use array declaration instead of char	2023-05-17 11:35:33 +02:00
kmod.c
kprobes.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
ksysfs.c
kthread.c	This is the 5.4.285 stable release	2024-11-09 11:29:17 +00:00
latencytop.c	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
Makefile	BACKPORT: umh: Separate the user mode driver and the user mode helper support	2026-01-14 18:12:14 -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	profiling: fix shift too large makes kernel panic	2022-08-25 11:18:02 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-06-14 18:11:24 +02:00
range.c
reboot.c	This is the 5.4.262 stable release	2023-11-29 10:18:14 +00:00
relay.c	relayfs: fix out-of-bounds access in relay_file_read	2023-05-17 11:35:58 +02:00
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	BACKPORT: sysctl: pass kernel pointers to ->proc_handler	2025-12-23 13:36:15 -08:00
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
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	BACKPORT: bpf: Sharing bpf runtime stats with BPF_ENABLE_STATS	2025-12-23 13:36:17 -08:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
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: umd: Transform fork_usermode_blob into fork_usermode_driver	2026-01-14 18:12:15 -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	Merge android11-5.4.259+ (81334f2) into msm-5.4	2023-12-18 15:40:18 +05:30
workqueue_internal.h