Re: [LTP] syscalls: add v7.3 syscall numbers

[linuxtestproject.agent@gmail.com]

Hi Andrea,

On 31 Aug 2026, Andrea Cervesato wrote:
> syscalls: add v7.3 syscall numbers

--- [PATCH 4/16] ---

> +fchroot01 fchroot01

Medium: Linux 7.3 is stable, so this released syscall test belongs in the
regular syscall runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.needs_tmpdir = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"`. On older kernels the direct syscall returns
ENOSYS and the test reports TFAIL instead of TCONF.

--- [PATCH 5/16] ---

> +fchroot02 fchroot02

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.test = run,
> +	.tcnt = ARRAY_SIZE(tcases),
> +	.setup = setup,
> +	.cleanup = cleanup,
> +	.needs_tmpdir = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 6/16] ---

> +fchroot03 fchroot03

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.test = run,
> +	.tcnt = ARRAY_SIZE(tcases),
> +	.setup = setup,
> +	.needs_root = 1,
> +	.needs_tmpdir = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 7/16] ---

> +fchroot04 fchroot04

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.test_all = run,
> +	.needs_root = 1,
> +	.needs_tmpdir = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 8/16] ---

> +fchroot05 fchroot05

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.test_all = run,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 9/16] ---

> +fchroot06 fchroot06

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.needs_tmpdir = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 10/16] ---

> +fchroot07 fchroot07

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +	.child_needs_reinit = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 11/16] ---

> +fchroot08 fchroot08

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.test_all = run,
> +	.setup = setup,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +	.needs_tmpdir = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 12/16] ---

> +fchroot09 fchroot09

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> + * back out require ``CAP_SYS_CHROOT``. The remaining way out is a pre-opened
> + * mount namespace file descriptor: :manpage:`setns(2)` into it resets both the

Low: A pre-opened directory fd also permits a privileged process to escape
with `fchroot()`, or with `fchdir()` followed by `chroot(".")`. Describe
`setns()` as one escape mechanism rather than the remaining one.

> +static struct tst_test test = {
> +	.test_all = run,
> +	.setup = setup,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +	.needs_tmpdir = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 13/16] ---

> +fchroot10 fchroot10

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 14/16] ---

> +fchroot11 fchroot11

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +	TST_EXP_FAIL(unshare(CLONE_NEWUSER), EPERM,
> +		"user namespace creation blocked by the failfs root");

Medium: EPERM can also come from `security_create_user_ns()` or a policy that
disables unprivileged user namespaces, producing a false pass. First verify
in a separate child, before entering failfs, that this user can create a user
namespace; skip if it cannot.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +	.needs_kconfigs = (const char *[]) {
> +		"CONFIG_USER_NS=y",
> +		NULL,
> +	}
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 15/16] ---

> +fchroot12 fchroot12

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

--- [PATCH 16/16] ---

> +fchroot13 fchroot13

Medium: Linux 7.3 is stable, so this entry belongs in the regular syscall
runtest file rather than the staging-only suite.

> +static struct tst_test test = {
> +	.setup = setup,
> +	.test_all = run,
> +	.needs_root = 1,
> +	.needs_tmpdir = 1,
> +	.forks_child = 1,
> +};

Medium: Add `.min_kver = "7.3"` so older kernels skip instead of reporting
TFAIL when the syscall returns ENOSYS.

Verdict - Needs revision

---
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LTP AI Reviewer

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