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| author | Douglas Anderson <dianders@chromium.org> | 2021-02-02 04:06:23 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-02-02 16:56:50 +0300 |
| commit | b8437a3ef8c485903d05d1f261328aaf0c0a6cc2 (patch) | |
| tree | 329409099650c30e6b94510c4f3c279a13cbe9d8 /certs | |
| parent | d1e3306ba83a839462d239ab6dff45ec10f8ce2b (diff) | |
| download | linux-b8437a3ef8c485903d05d1f261328aaf0c0a6cc2.tar.xz | |
iommu: Properly pass gfp_t in _iommu_map() to avoid atomic sleeping
Sleeping while atomic = bad. Let's fix an obvious typo to try to avoid it.
The warning that was seen (on a downstream kernel with the problematic
patch backported):
BUG: sleeping function called from invalid context at mm/page_alloc.c:4726
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 9, name: ksoftirqd/0
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.93-12508-gc10c93e28e39 #1
Call trace:
dump_backtrace+0x0/0x154
show_stack+0x20/0x2c
dump_stack+0xa0/0xfc
___might_sleep+0x11c/0x12c
__might_sleep+0x50/0x84
__alloc_pages_nodemask+0xf8/0x2bc
__arm_lpae_alloc_pages+0x48/0x1b4
__arm_lpae_map+0x124/0x274
__arm_lpae_map+0x1cc/0x274
arm_lpae_map+0x140/0x170
arm_smmu_map+0x78/0xbc
__iommu_map+0xd4/0x210
_iommu_map+0x4c/0x84
iommu_map_atomic+0x44/0x58
__iommu_dma_map+0x8c/0xc4
iommu_dma_map_page+0xac/0xf0
Fixes: d8c1df02ac7f ("iommu: Move iotlb_sync_map out from __iommu_map")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210201170611.1.I64a7b62579287d668d7c89e105dcedf45d641063@changeid
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'certs')
0 files changed, 0 insertions, 0 deletions