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| author | Christian Brauner <brauner@kernel.org> | 2025-09-01 15:31:40 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-09-01 15:31:40 +0200 |
| commit | 76cea30ad520238160bf8f5e2f2803fcd7a08d22 (patch) | |
| tree | aa38b7d6038de1c1377d3182244d6f11e721b703 /kernel/nsproxy.c | |
| parent | 8f5ae30d69d7543eee0d70083daf4de8fe15d585 (diff) | |
| parent | c6ac444ff20ce301020a41e35f1942c6524e0864 (diff) | |
Merge patch series "nios2: Add architecture support for clone3"
Simon Schuster <schuster.simon@siemens-energy.com> says:
This series adds support for the clone3 system call to the nios2
architecture. This addresses the build-time warning "warning: clone3()
entry point is missing, please fix" introduced in 505d66d1abfb9
("clone3: drop __ARCH_WANT_SYS_CLONE3 macro"). The implementation passes
the relevant clone3 tests of kselftest when applied on top of
next-20250815:
./run_kselftest.sh
TAP version 13
1..4
# selftests: clone3: clone3
ok 1 selftests: clone3: clone3
# selftests: clone3: clone3_clear_sighand
ok 2 selftests: clone3: clone3_clear_sighand
# selftests: clone3: clone3_set_tid
ok 3 selftests: clone3: clone3_set_tid
# selftests: clone3: clone3_cap_checkpoint_restore
ok 4 selftests: clone3: clone3_cap_checkpoint_restore
The series also includes a small patch to kernel/fork.c that ensures
that clone_flags are passed correctly on architectures where unsigned
long is insufficient to store the u64 clone_flags. It is marked as a fix
for stable backporting.
As requested, in v2, this series now further tries to correct this type
error throughout the whole code base. Thus, it now touches a larger
number of subsystems and all architectures.
Therefore, another test was performed for ARCH=x86_64 (as a
representative for 64-bit architectures). Here, the series builds cleanly
without warnings on defconfig with CONFIG_SECURITY_APPARMOR=y and
CONFIG_SECURITY_TOMOYO=y (to compile-check the LSM-related changes).
The build further successfully passes testing/selftests/clone3 (with the
patch from 20241105062948.1037011-1-zhouyuhang1010@163.com to prepare
clone3_cap_checkpoint_restore for compatibility with the newer libcap
version on my system).
* patches from https://lore.kernel.org/20250901-nios2-implement-clone3-v2-0-53fcf5577d57@siemens-energy.com:
nios2: implement architecture-specific portion of sys_clone3
arch: copy_thread: pass clone_flags as u64
copy_process: pass clone_flags as u64 across calltree
copy_sighand: Handle architectures where sizeof(unsigned long) < sizeof(u64)
Link: https://lore.kernel.org/20250901-nios2-implement-clone3-v2-0-53fcf5577d57@siemens-energy.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'kernel/nsproxy.c')
| -rw-r--r-- | kernel/nsproxy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c index 5f31fdff8a38..8af3b9ec3aa8 100644 --- a/kernel/nsproxy.c +++ b/kernel/nsproxy.c @@ -64,7 +64,7 @@ static inline struct nsproxy *create_nsproxy(void) * Return the newly created nsproxy. Do not attach this to the task, * leave it to the caller to do proper locking and attach it to task. */ -static struct nsproxy *create_new_namespaces(unsigned long flags, +static struct nsproxy *create_new_namespaces(u64 flags, struct task_struct *tsk, struct user_namespace *user_ns, struct fs_struct *new_fs) { @@ -144,7 +144,7 @@ out_ns: * called from clone. This now handles copy for nsproxy and all * namespaces therein. */ -int copy_namespaces(unsigned long flags, struct task_struct *tsk) +int copy_namespaces(u64 flags, struct task_struct *tsk) { struct nsproxy *old_ns = tsk->nsproxy; struct user_namespace *user_ns = task_cred_xxx(tsk, user_ns); |