diff options
| author | Arjan van de Ven <arjan@Linux.intel.com> | 2006-07-10 04:44:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-10 13:24:14 -0700 |
| commit | 55794a412fdf9af1744800e5020a4ec6b21e3cdc (patch) | |
| tree | 3429cb26c5dfd484487b15827c655b5d080ce0f8 /kernel/lockdep.c | |
| parent | 5fca80e8b4bf5d69b900115b14342133ce81d79e (diff) | |
| download | lwn-55794a412fdf9af1744800e5020a4ec6b21e3cdc.tar.gz lwn-55794a412fdf9af1744800e5020a4ec6b21e3cdc.zip | |
[PATCH] lockdep: improve debug output
Make lockdep print which lock is held, in the "kfree() of a live lock"
scenario.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/lockdep.c')
| -rw-r--r-- | kernel/lockdep.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 42af5cc31a49..c1f34addd003 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -2551,7 +2551,7 @@ static inline int in_range(const void *start, const void *addr, const void *end) static void print_freed_lock_bug(struct task_struct *curr, const void *mem_from, - const void *mem_to) + const void *mem_to, struct held_lock *hlock) { if (!debug_locks_off()) return; @@ -2563,6 +2563,7 @@ print_freed_lock_bug(struct task_struct *curr, const void *mem_from, printk( "-------------------------\n"); printk("%s/%d is freeing memory %p-%p, with a lock still held there!\n", curr->comm, curr->pid, mem_from, mem_to-1); + print_lock(hlock); lockdep_print_held_locks(curr); printk("\nstack backtrace:\n"); @@ -2596,7 +2597,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len) !in_range(mem_from, lock_to, mem_to)) continue; - print_freed_lock_bug(curr, mem_from, mem_to); + print_freed_lock_bug(curr, mem_from, mem_to, hlock); break; } local_irq_restore(flags); |