diff options
author | Qian Cai <cai@lca.pw> | 2020-03-17 18:03:26 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-23 11:38:19 +0300 |
commit | fa2fa282240b6b5d5a82b344c1c706e685bbd398 (patch) | |
tree | 37633bfd3a2420b384417d23710dfd2e2152d28b /net/6lowpan/nhc.h | |
parent | b0d0decd3d51a1d81f0414c925de55303964d84e (diff) | |
download | linux-fa2fa282240b6b5d5a82b344c1c706e685bbd398.tar.xz |
iommu/vt-d: Silence RCU-list debugging warning in dmar_find_atsr()
[ Upstream commit c6f4ebdeba4cff590594df931ff1ee610c426431 ]
dmar_find_atsr() calls list_for_each_entry_rcu() outside of an RCU read
side critical section but with dmar_global_lock held. Silence this
false positive.
drivers/iommu/intel-iommu.c:4504 RCU-list traversed in non-reader section!!
1 lock held by swapper/0/1:
#0: ffffffff9755bee8 (dmar_global_lock){+.+.}, at: intel_iommu_init+0x1a6/0xe19
Call Trace:
dump_stack+0xa4/0xfe
lockdep_rcu_suspicious+0xeb/0xf5
dmar_find_atsr+0x1ab/0x1c0
dmar_parse_one_atsr+0x64/0x220
dmar_walk_remapping_entries+0x130/0x380
dmar_table_init+0x166/0x243
intel_iommu_init+0x1ab/0xe19
pci_iommu_init+0x1a/0x44
do_one_initcall+0xae/0x4d0
kernel_init_freeable+0x412/0x4c5
kernel_init+0x19/0x193
Signed-off-by: Qian Cai <cai@lca.pw>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/6lowpan/nhc.h')
0 files changed, 0 insertions, 0 deletions