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| author | Mark Brown <broonie@kernel.org> | 2024-09-12 12:38:44 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-09-12 12:38:44 +0100 |
| commit | f10d52087cbe85dcff2af3dc94c5b9d06e6d4b9a (patch) | |
| tree | d07ff0a3767fbb6118505de85ad657f78f512c06 /kernel/dma/debug.c | |
| parent | 740c1c84bfa3d8c63bd3b01fb570e7452f51fbd8 (diff) | |
| parent | b787a33864121a565aeb0e88561bf6062a19f99c (diff) | |
spi: Merge up fixes
A patch for Qualcomm depends on some fixes.
Diffstat (limited to 'kernel/dma/debug.c')
| -rw-r--r-- | kernel/dma/debug.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index a6e3792b15f8..d570535342cb 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -416,8 +416,11 @@ static unsigned long long phys_addr(struct dma_debug_entry *entry) * dma_active_cacheline entry to track per event. dma_map_sg(), on the * other hand, consumes a single dma_debug_entry, but inserts 'nents' * entries into the tree. + * + * Use __GFP_NOWARN because the printk from an OOM, to netconsole, could end + * up right back in the DMA debugging code, leading to a deadlock. */ -static RADIX_TREE(dma_active_cacheline, GFP_ATOMIC); +static RADIX_TREE(dma_active_cacheline, GFP_ATOMIC | __GFP_NOWARN); static DEFINE_SPINLOCK(radix_lock); #define ACTIVE_CACHELINE_MAX_OVERLAP ((1 << RADIX_TREE_MAX_TAGS) - 1) #define CACHELINE_PER_PAGE_SHIFT (PAGE_SHIFT - L1_CACHE_SHIFT) |