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RK3288 hwrng never worked! Worse! Kernel hangs with rng-tools #201

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weiqj opened this issue Dec 29, 2019 · 0 comments
Open

RK3288 hwrng never worked! Worse! Kernel hangs with rng-tools #201

weiqj opened this issue Dec 29, 2019 · 0 comments

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@weiqj
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weiqj commented Dec 29, 2019

I have been tracking and testing every hwrng related patches. And I am still having kernel hang problem with rng-tools.
Can anybody confirm the problem?
scpcom pushed a commit to scpcom/linux that referenced this issue Jul 1, 2023
@yonghong-song @gregkh
selftests/bpf: Fix sockopt_sk selftest
34d67ec 
[ Upstream commit 69844e3 ]

Commit f4e4534 ("net/netlink: fix NETLINK_LIST_MEMBERSHIPS length report")
fixed NETLINK_LIST_MEMBERSHIPS length report which caused
selftest sockopt_sk failure. The failure log looks like

  test_sockopt_sk:PASS:join_cgroup /sockopt_sk 0 nsec
  run_test:PASS:skel_load 0 nsec
  run_test:PASS:setsockopt_link 0 nsec
  run_test:PASS:getsockopt_link 0 nsec
  getsetsockopt:FAIL:Unexpected NETLINK_LIST_MEMBERSHIPS value unexpected Unexpected NETLINK_LIST_MEMBERSHIPS value: actual 8 != expected 4
  run_test:PASS:getsetsockopt 0 nsec
  rockchip-linux#201     sockopt_sk:FAIL

In net/netlink/af_netlink.c, function netlink_getsockopt(), for NETLINK_LIST_MEMBERSHIPS,
nlk->ngroups equals to 36. Before Commit f4e4534, the optlen is calculated as
  ALIGN(nlk->ngroups / 8, sizeof(u32)) = 4
After that commit, the optlen is
  ALIGN(BITS_TO_BYTES(nlk->ngroups), sizeof(u32)) = 8

Fix the test by setting the expected optlen to be 8.

Fixes: f4e4534 ("net/netlink: fix NETLINK_LIST_MEMBERSHIPS length report")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230606172202.1606249-1-yhs@fb.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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