diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2024-12-05 11:48:58 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-12-12 14:19:05 -0800 |
| commit | 5098462fbac60cbec76171a8b4998a36b85891a1 (patch) | |
| tree | e9d6b62251ba4a670216f12390cc1ccad8148569 /lib/stackdepot.c | |
| parent | f3674384709b69c5cd8c4597b8bd73ea7bd0236f (diff) | |
| parent | 150b567e0d572342ef08bace7ee7aff80fd75327 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc3).
No conflicts or adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'lib/stackdepot.c')
| -rw-r--r-- | lib/stackdepot.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/stackdepot.c b/lib/stackdepot.c index 5ed34cc963fc..245d5b416699 100644 --- a/lib/stackdepot.c +++ b/lib/stackdepot.c @@ -630,7 +630,15 @@ depot_stack_handle_t stack_depot_save_flags(unsigned long *entries, prealloc = page_address(page); } - raw_spin_lock_irqsave(&pool_lock, flags); + if (in_nmi()) { + /* We can never allocate in NMI context. */ + WARN_ON_ONCE(can_alloc); + /* Best effort; bail if we fail to take the lock. */ + if (!raw_spin_trylock_irqsave(&pool_lock, flags)) + goto exit; + } else { + raw_spin_lock_irqsave(&pool_lock, flags); + } printk_deferred_enter(); /* Try to find again, to avoid concurrently inserting duplicates. */ |