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Ensure that put_user() can fail and that namespace cleanup works
correctly.
Link: https://patch.msgid.link/20251109-namespace-6-19-fixes-v1-8-ae8a4ad5a3b3@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a regression test for setns() with pidfd.
Link: https://patch.msgid.link/20251109-namespace-6-19-fixes-v1-7-ae8a4ad5a3b3@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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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>
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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>
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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>
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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>
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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>
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Test basic listns() functionality with the unified namespace tree.
List all active namespaces globally.
Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-39-2e6f823ebdc0@kernel.org
Tested-by: syzbot@syzkaller.appspotmail.com
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Test that initial namespaces can be reopened via file handle. Initial
namespaces should always have a ref count of one from boot.
Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-23-2e6f823ebdc0@kernel.org
Tested-by: syzbot@syzkaller.appspotmail.com
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Make sure that all works correctly.
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a bunch of selftests for namespace file handles.
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a bunch of selftests for the identifier retrieval ioctls.
Signed-off-by: Christian Brauner <brauner@kernel.org>
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