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2025-11-04selftests/coredump: add first PIDFD_INFO_COREDUMP_SIGNAL testChristian Brauner1-0/+146
Verify that when using simple socket-based coredump (@ pattern), the coredump_signal field is correctly exposed as SIGSEGV. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-21-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: ignore ENOSPC errorsChristian Brauner3-2/+9
If we crash multiple processes at the same time we may run out of space. Just ignore those errors. They're not actually all that relevant for the test. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-20-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: add debug logging to coredump socket protocol testsChristian Brauner1-118/+367
So it's easier to figure out bugs. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-19-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: add debug logging to coredump socket testsChristian Brauner1-22/+71
So it's easier to figure out bugs. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-18-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: add debug logging to test helpersChristian Brauner1-11/+44
so we can easily figure out why something failed. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-17-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: handle edge-triggered epoll correctlyChristian Brauner1-0/+8
by putting the file descriptor into non-blocking mode. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-16-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: fix userspace coredump client detectionChristian Brauner1-4/+8
PIDFD_INFO_COREDUMP is only retrievable until the task has exited. After it has exited task->mm is NULL. So if the task didn't actually coredump we can't retrieve it's dumpability settings anymore. Only if the task did coredump will we have stashed the coredump information in the respective struct pid. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-15-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: fix userspace client detectionChristian Brauner1-1/+3
We need to request PIDFD_INFO_COREDUMP in the first place. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-14-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: split out coredump socket testsChristian Brauner5-1661/+1722
Split the coredump socket tests into separate files. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-13-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/coredump: split out common helpersChristian Brauner2-0/+399
into separate files. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-12-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/pidfd: add second supported_mask testChristian Brauner1-0/+32
Verify that supported_mask is returned even when other fields are requested. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-11-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/pidfd: add first supported_mask testChristian Brauner1-0/+41
Verify that when PIDFD_INFO_SUPPORTED_MASK is requested, the kernel returns the supported_mask field indicating which flags the kernel supports. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-10-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-04selftests/pidfd: update pidfd headerChristian Brauner1-2/+13
Include the new defines and members. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-9-ca449b7b7aa0@kernel.org Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests: Add napi threaded busy poll test in `busy_poller`Samiullah Khawaja2-4/+36
Add testcase to run busy poll test with threaded napi busy poll enabled. Signed-off-by: Samiullah Khawaja <skhawaja@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Acked-by: Martin Karsten <mkarsten@uwaterloo.ca> Tested-by: Martin Karsten <mkarsten@uwaterloo.ca> Link: https://patch.msgid.link/20251028203007.575686-3-skhawaja@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-03selftests/bpf: Add test for conditional jumps on same scalar registerKaFai Wan1-0/+154
Add test cases to verify the correctness of the BPF verifier's branch analysis when conditional jumps are performed on the same scalar register. And make sure that JGT does not trigger verifier BUG. Signed-off-by: KaFai Wan <kafai.wan@linux.dev> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20251103063108.1111764-3-kafai.wan@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-11-03selftests/bpf: Add tests for livepatch + bpf trampolineSong Liu3-0/+140
Both livepatch and BPF trampoline use ftrace. Special attention is needed when livepatch and fexit program touch the same function at the same time, because livepatch updates a kernel function and the BPF trampoline need to call into the right version of the kernel function. Use samples/livepatch/livepatch-sample.ko for the test. The test covers two cases: 1) When a fentry program is loaded first. This exercises the modify_ftrace_direct code path. 2) When a fentry program is loaded first. This exercises the register_ftrace_direct code path. Signed-off-by: Song Liu <song@kernel.org> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20251027175023.1521602-4-song@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-11-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.18-rc4Alexei Starovoitov11-92/+287
Cross-merge BPF and other fixes after downstream PR. No conflicts. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-11-03tools/testing/nvdimm: Use per-DIMM device handleAlison Schofield1-1/+6
KASAN reports a global-out-of-bounds access when running these nfit tests: clear.sh, pmem-errors.sh, pfn-meta-errors.sh, btt-errors.sh, daxdev-errors.sh, and inject-error.sh. [] BUG: KASAN: global-out-of-bounds in nfit_test_ctl+0x769f/0x7840 [nfit_test] [] Read of size 4 at addr ffffffffc03ea01c by task ndctl/1215 [] The buggy address belongs to the variable: [] handle+0x1c/0x1df4 [nfit_test] nfit_test_search_spa() uses handle[nvdimm->id] to retrieve a device handle and triggers a KASAN error when it reads past the end of the handle array. It should not be indexing the handle array at all. The correct device handle is stored in per-DIMM test data. Each DIMM has a struct nfit_mem that embeds a struct acpi_nfit_memdev that describes the NFIT device handle. Use that device handle here. Fixes: 10246dc84dfc ("acpi nfit: nfit_test supports translate SPA") Cc: stable@vger.kernel.org Signed-off-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com>> --- Link: https://patch.msgid.link/20251031234227.1303113-1-alison.schofield@intel.com Signed-off-by: Ira Weiny <ira.weiny@intel.com>
2025-11-03sched_ext: Merge branch 'for-6.19' of ↵Tejun Heo28-180/+674
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup into for-6.19 Pull cgroup/for-6.19 to receive: 16dad7801aad ("cgroup: Rename cgroup lifecycle hooks to cgroup_task_*()") 260fbcb92bbe ("cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free()") d245698d727a ("cgroup: Defer task cgroup unlink until after the task is done switching out") These are needed for the sched_ext cgroup exit ordering fix. Signed-off-by: Tejun Heo <tj@kernel.org>
2025-11-03KVM: selftests: Rename "guest_paddr" variables to "gpa"Sean Christopherson2-30/+26
Rename "guest_paddr" variables in vm_userspace_mem_region_add() and vm_mem_add() to KVM's de facto standard "gpa", both for consistency and to shorten line lengths. Opportunistically fix the indentation of the vm_userspace_mem_region_add() declaration. Link: https://patch.msgid.link/20251007223625.369939-1-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
2025-11-03selftests/namespace: test listns() paginationChristian Brauner3-1/+142
Minimal test case to reproduce KASAN out-of-bounds in listns pagination. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-72-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespace: add stress testChristian Brauner3-1/+630
Stress tests for namespace active reference counting. These tests validate that the active reference counting system can handle high load scenarios including rapid namespace creation/destruction, large numbers of concurrent namespaces, and various edge cases under stress. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-71-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespace: commit_creds() active reference testsChristian Brauner3-1/+818
Test credential changes and their impact on namespace active references. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-70-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespace: third threaded active reference count testChristian Brauner1-0/+319
Test that namespaces become inactive after subprocess with multiple threads exits. Create a subprocess that unshares user and network namespaces, then creates two threads that share those namespaces. Verify that after all threads and subprocess exit, the namespaces are no longer listed by listns() and cannot be opened by open_by_handle_at(). Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-69-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespace: second threaded active reference count testChristian Brauner1-0/+99
Test that a namespace remains active while a thread holds an fd to it. Even after the thread exits, the namespace should remain active as long as another thread holds a file descriptor to it. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-68-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespace: first threaded active reference count testChristian Brauner1-0/+138
Test that namespace becomes inactive after thread exits. This verifies active reference counting works with threads, not just processes. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-67-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: twelth inactive namespace resurrection testChristian Brauner1-0/+564
Test multi-level namespace resurrection across three user namespace levels. This test creates a complex namespace hierarchy with three levels of user namespaces and a network namespace at the deepest level. It verifies that the resurrection semantics work correctly when SIOCGSKNS is called on a socket from an inactive namespace tree, and that listns() and open_by_handle_at() correctly respect visibility rules. Hierarchy after child processes exit (all with 0 active refcount): net_L3A (0) <- Level 3 network namespace | + userns_L3 (0) <- Level 3 user namespace | + userns_L2 (0) <- Level 2 user namespace | + userns_L1 (0) <- Level 1 user namespace | x init_user_ns The test verifies: 1. SIOCGSKNS on a socket from inactive net_L3A resurrects the entire chain 2. After resurrection, all namespaces are visible in listns() 3. Resurrected namespaces can be reopened via file handles 4. Closing the netns FD cascades down: the entire ownership chain (userns_L3 -> userns_L2 -> userns_L1) becomes inactive again 5. Inactive namespaces disappear from listns() and cannot be reopened 6. Calling SIOCGSKNS again on the same socket resurrects the tree again 7. After second resurrection, namespaces are visible and can be reopened Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-66-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: eleventh inactive namespace resurrection testChristian Brauner1-0/+283
Test combined listns() and file handle operations with socket-kept netns. Create a netns, keep it alive with a socket, verify it appears in listns(), then reopen it via file handle obtained from listns() entry. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-65-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: tenth inactive namespace resurrection testChristian Brauner1-0/+195
Test that socket-kept netns can be reopened via file handle. Verify that a network namespace kept alive by a socket FD can be reopened using file handles even after the creating process exits. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-64-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: ninth inactive namespace resurrection testChristian Brauner1-0/+203
Test that socket-kept netns appears in listns() output. Verify that a network namespace kept alive by a socket FD appears in listns() output even after the creating process exits, and that it disappears when the socket is closed. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-63-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: eigth inactive namespace resurrection testChristian Brauner1-0/+34
Test IPv6 sockets also work with SIOCGSKNS. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-62-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: seventh inactive namespace resurrection testChristian Brauner1-0/+141
Test socket keeps netns active after creating process exits. Verify that as long as the socket FD exists, the namespace remains active. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-61-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: sixth inactive namespace resurrection testChristian Brauner1-0/+68
Test multiple sockets keep the same network namespace active. Create multiple sockets, verify closing some doesn't affect others. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-60-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: fifth inactive namespace resurrection testChristian Brauner1-0/+26
Test SIOCGSKNS fails on non-socket file descriptors. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-59-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: fourth inactive namespace resurrection testChristian Brauner1-0/+51
Test SIOCGSKNS across setns. Create a socket in netns A, switch to netns B, verify SIOCGSKNS still returns netns A. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-58-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: third inactive namespace resurrection testChristian Brauner1-2/+63
Test SIOCGSKNS with different socket types (TCP, UDP, RAW). Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-57-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: second inactive namespace resurrection testChristian Brauner1-0/+126
Test that socket file descriptors keep network namespaces active. Create a network namespace, create a socket in it, then exit the namespace. The namespace should remain active while the socket FD is held. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-56-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: first inactive namespace resurrection testChristian Brauner3-1/+81
Test basic SIOCGSKNS functionality. Create a socket and verify SIOCGSKNS returns the correct network namespace. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-55-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: seventh listns() permission testChristian Brauner1-0/+108
Test that dropping CAP_SYS_ADMIN restricts what we can see. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-54-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: sixth listns() permission testChristian Brauner1-0/+87
Test that we can see user namespaces we have CAP_SYS_ADMIN inside of. This is different from seeing namespaces owned by a user namespace. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-53-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: fifth listns() permission testChristian Brauner1-0/+119
Test that CAP_SYS_ADMIN in parent user namespace allows seeing child user namespace's owned namespaces. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-52-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: fourth listns() permission testChristian Brauner1-0/+76
Test permission checking with LISTNS_CURRENT_USER. Verify that listing with LISTNS_CURRENT_USER respects permissions. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-51-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: third listns() permission testChristian Brauner1-0/+138
Test that users cannot see namespaces from unrelated user namespaces. Create two sibling user namespaces, verify they can't see each other's owned namespaces. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-50-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: second listns() permission testChristian Brauner1-0/+100
Test that users with CAP_SYS_ADMIN in a user namespace can see all namespaces owned by that user namespace. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-49-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: first listns() permission testChristian Brauner3-1/+134
Test that unprivileged users can only see namespaces they're currently in. Create a namespace, drop privileges, verify we can only see our own namespaces. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-48-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: ninth listns() testChristian Brauner1-0/+49
Test error cases for listns(). Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-47-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: eigth listns() testChristian Brauner1-0/+150
Test that hierarchical active reference propagation keeps parent user namespaces visible in listns(). Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-46-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: seventh listns() testChristian Brauner1-0/+31
Test listns() with multiple namespace types filter. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-45-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: sixth listns() testChristian Brauner1-0/+122
Test listns() with specific user namespace ID. Create a user namespace and list namespaces it owns. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-44-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-03selftests/namespaces: fifth listns() testChristian Brauner1-0/+123
Test that listns() only returns active namespaces. Create a namespace, let it become inactive, verify it's not listed. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-43-2e6f823ebdc0@kernel.org Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
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