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| author | Nuno Das Neves <[email protected]> | 2025-07-03 22:44:34 +0000 |
|---|---|---|
| committer | Wei Liu <[email protected]> | 2025-07-09 23:49:25 +0000 |
| commit | bb169f80ed5a156ec3405e0e49c6b8e9ae264718 (patch) | |
| tree | 68828d8eb9344e7ddac993347e0c12443a856f5b /tools/lib/bpf/bpf_prog_linfo.c | |
| parent | PCI: hv: Don't load the driver for baremetal root partition (diff) | |
| download | kernel-bb169f80ed5a156ec3405e0e49c6b8e9ae264718.tar.gz kernel-bb169f80ed5a156ec3405e0e49c6b8e9ae264718.zip | |
x86/hyperv: Fix usage of cpu_online_mask to get valid cpu
Accessing cpu_online_mask here is problematic because the cpus read lock
is not held in this context.
However, cpu_online_mask isn't needed here since the effective affinity
mask is guaranteed to be valid in this callback. So, just use
cpumask_first() to get the cpu instead of ANDing it with cpus_online_mask
unnecessarily.
Fixes: e39397d1fd68 ("x86/hyperv: implement an MSI domain for root partition")
Reported-by: Michael Kelley <[email protected]>
Closes: https://lore.kernel.org/linux-hyperv/SN6PR02MB4157639630F8AD2D8FD8F52FD475A@SN6PR02MB4157.namprd02.prod.outlook.com/
Suggested-by: Thomas Gleixner <[email protected]>
Signed-off-by: Nuno Das Neves <[email protected]>
Reviewed-by: Michael Kelley <[email protected]>
Link: https://lore.kernel.org/r/1751582677-30930-4-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <[email protected]>
Message-ID: <1751582677-30930-4-git-send-email-nunodasneves@linux.microsoft.com>
Diffstat (limited to 'tools/lib/bpf/bpf_prog_linfo.c')
0 files changed, 0 insertions, 0 deletions