JIRA: https://issues.redhat.com/browse/RHEL-23644
commit 3f00e4a9c96f4488a924aff4e35b77c8eced897e
Author: Martin KaFai Lau <martin.lau@kernel.org>
Date: Thu Feb 15 13:12:18 2024 -0800
selftests/bpf: Test racing between bpf_timer_cancel_and_free and bpf_timer_cancel
This selftest is based on a Alexei's test adopted from an internal
user to troubleshoot another bug. During this exercise, a separate
racing bug was discovered between bpf_timer_cancel_and_free
and bpf_timer_cancel. The details can be found in the previous
patch.
This patch is to add a selftest that can trigger the bug.
I can trigger the UAF everytime in my qemu setup with KASAN. The idea
is to have multiple user space threads running in a tight loop to exercise
both bpf_map_update_elem (which calls into bpf_timer_cancel_and_free)
and bpf_timer_cancel.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/bpf/20240215211218.990808-2-martin.lau@linux.dev
Signed-off-by: Viktor Malik <vmalik@redhat.com>
JIRA: https://issues.redhat.com/browse/RHEL-23643
commit 0d7ae06860753bb30b3731302b994da071120d00
Author: David Vernet <void@manifault.com>
Date: Wed Oct 4 11:23:39 2023 -0500
selftests/bpf: Test pinning bpf timer to a core
Now that we support pinning a BPF timer to the current core, we should
test it with some selftests. This patch adds two new testcases to the
timer suite, which verifies that a BPF timer both with and without
BPF_F_TIMER_ABS, can be pinned to the calling core with BPF_F_TIMER_CPU_PIN.
Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/bpf/20231004162339.200702-3-void@manifault.com
Signed-off-by: Artem Savkov <asavkov@redhat.com>
JIRA: https://issues.redhat.com/browse/RHEL-10691
commit 57ddeb86b311ff41925e0fac7b983c097336f1f3
Author: David Vernet <void@manifault.com>
Date: Mon Oct 9 11:14:14 2023 -0500
selftests/bpf: Add testcase for async callback return value failure
A previous commit updated the verifier to print an accurate failure
message for when someone specifies a nonzero return value from an async
callback. This adds a testcase for validating that the verifier emits
the correct message in such a case.
Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20231009161414.235829-2-void@manifault.com
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Bugzilla: https://bugzilla.redhat.com/2221599
commit 944459e88b4f5c71683b56710f96e39756afae31
Author: Tero Kristo <tero.kristo@linux.intel.com>
Date: Thu Mar 2 13:46:14 2023 +0200
selftests/bpf: Add absolute timer test
Add test for the absolute BPF timer under the existing timer tests. This
will run the timer two times with 1us expiration time, and then re-arm
the timer at ~35s in the future. At the end, it is verified that the
absolute timer expired exactly two times.
Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com>
Link: https://lore.kernel.org/r/20230302114614.2985072-3-tero.kristo@linux.intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Artem Savkov <asavkov@redhat.com>
Bugzilla: https://bugzilla.redhat.com/2120966
commit 04fcb5f9a104f24278ad849c642cbdf0c8f48453
Author: Delyan Kratunov <delyank@fb.com>
Date: Wed Feb 2 15:54:20 2022 -0800
selftests/bpf: Migrate from bpf_prog_test_run
bpf_prog_test_run is being deprecated in favor of the OPTS-based
bpf_prog_test_run_opts.
We end up unable to use CHECK in most cases, so replace usages with
ASSERT_* calls.
Signed-off-by: Delyan Kratunov <delyank@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220202235423.1097270-2-delyank@fb.com
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Bugzilla: http://bugzilla.redhat.com/2069045
commit d3f7b1664d3ebd69751327f45f5cd4adfb29f620
Author: Yucong Sun <sunyucong@gmail.com>
Date: Wed Oct 6 11:56:19 2021 -0700
selfetest/bpf: Make some tests serial
Change tests that often fails in parallel execution mode to serial.
Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-15-fallentree@fb.com
Signed-off-by: Yauheni Kaliuta <ykaliuta@redhat.com>
Bugzilla: http://bugzilla.redhat.com/2041365
commit 3540f7c6b96a62b581da5aa3d4c5af9408927bef
Author: Alexei Starovoitov <ast@kernel.org>
Date: Wed Jul 14 17:54:16 2021 -0700
selftests/bpf: Add bpf_timer test.
Add bpf_timer test that creates timers in preallocated and
non-preallocated hash, in array and in lru maps.
Let array timer expire once and then re-arm it for 35 seconds.
Arm lru timer into the same callback.
Then arm and re-arm hash timers 10 times each.
At the last invocation of prealloc hash timer cancel the array timer.
Force timer free via LRU eviction and direct bpf_map_delete_elem.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20210715005417.78572-11-alexei.starovoitov@gmail.com
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Viktor Malik
Artem Savkov
Jerome Marchand
Yauheni Kaliuta