diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-09-04 12:15:38 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-09-04 12:15:38 +0200 |
| commit | eb876ea724835126f215c9a5bcc9e6148e2a6d15 (patch) | |
| tree | 689c215270b023c2f94a6629c7f1d3ef8e49c28a /kernel/dma/debug.c | |
| parent | 2dce993165088dbe728faa21547e3b74213b6732 (diff) | |
| parent | 67784a74e258a467225f0e68335df77acd67b7ab (diff) | |
Merge branch 'linus' into smp/core
Pull in upstream changes so further patches don't conflict.
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 a6e3792b15f8a..d570535342cb7 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) |