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| author | Amol Grover <frextrite@gmail.com> | 2020-02-23 17:55:39 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-03-02 17:03:57 +0100 |
| commit | 02d715b4a8182f4887d82df82a7b83aced647760 (patch) | |
| tree | 16ff7a3cde8daacde976459a1a91b6ce8781aeea /Kbuild | |
| parent | Linux 5.6-rc4 (diff) | |
| download | linux-02d715b4a8182f4887d82df82a7b83aced647760.tar.xz linux-02d715b4a8182f4887d82df82a7b83aced647760.zip | |
iommu/vt-d: Fix RCU list debugging warnings
dmar_drhd_units is traversed using list_for_each_entry_rcu()
outside of an RCU read side critical section but under the
protection of dmar_global_lock. Hence add corresponding lockdep
expression to silence the following false-positive warnings:
[ 1.603975] =============================
[ 1.603976] WARNING: suspicious RCU usage
[ 1.603977] 5.5.4-stable #17 Not tainted
[ 1.603978] -----------------------------
[ 1.603980] drivers/iommu/intel-iommu.c:4769 RCU-list traversed in non-reader section!!
[ 1.603869] =============================
[ 1.603870] WARNING: suspicious RCU usage
[ 1.603872] 5.5.4-stable #17 Not tainted
[ 1.603874] -----------------------------
[ 1.603875] drivers/iommu/dmar.c:293 RCU-list traversed in non-reader section!!
Tested-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Signed-off-by: Amol Grover <frextrite@gmail.com>
Cc: stable@vger.kernel.org
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions