From: Dirk Behme <[email protected]> In case this BUG() is hit, it helps debugging a lot to get an idea what tasklet is the root cause. So, be slightly more verbose here.
Signed-off-by: Dirk Behme <[email protected]> Signed-off-by: Eugeniu Rosca <[email protected]> --- kernel/softirq.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/kernel/softirq.c b/kernel/softirq.c index 9908ec4a9bfe..a6b602ad48d6 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -550,9 +550,13 @@ static void tasklet_action_common(struct softirq_action *a, if (tasklet_trylock(t)) { if (!atomic_read(&t->count)) { - if (!test_and_clear_bit(TASKLET_STATE_SCHED, - &t->state)) + if (!test_and_clear_bit(TASKLET_STATE_SCHED, &t->state)) { + if (t->use_callback) + pr_emerg("tasklet failed, cb: %pS\n", t->callback); + else + pr_emerg("tasklet failed, func: %pS\n", t->func); BUG(); + } if (t->use_callback) t->callback(t); else -- 2.29.0
