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author | Wei Liu <wei.liu@kernel.org> | 2021-01-05 17:50:43 +0000 |
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committer | Wei Liu <wei.liu@kernel.org> | 2021-01-06 11:03:16 +0000 |
commit | ad0a6bad44758afa3b440c254a24999a0c7e35d5 (patch) | |
tree | a8e21b9bb6c20536d3313279b249b99964d5d77b /fs/nfsd/nfs4xdr.c | |
parent | dfe94d4086e40e92b1926bddcefa629b791e9b28 (diff) | |
download | linux-ad0a6bad44758afa3b440c254a24999a0c7e35d5.tar.bz2 |
x86/hyperv: check cpu mask after interrupt has been disabled
We've observed crashes due to an empty cpu mask in
hyperv_flush_tlb_others. Obviously the cpu mask in question is changed
between the cpumask_empty call at the beginning of the function and when
it is actually used later.
One theory is that an interrupt comes in between and a code path ends up
changing the mask. Move the check after interrupt has been disabled to
see if it fixes the issue.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20210105175043.28325-1-wei.liu@kernel.org
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
0 files changed, 0 insertions, 0 deletions