Messages in this thread |  | | From | Jia-Ju Bai <> | Subject | [BUG] kernel: rcu: a possible sleep-in-atomic-context bug in srcu_read_delay() | Date | Mon, 13 Aug 2018 11:04:10 +0800 |
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The kernel may sleep with holding a spinlock.
The function call paths (from bottom to top) in Linux-4.16 are:
[FUNC] schedule_timeout_interruptible kernel/rcu/rcutorture.c, 523: schedule_timeout_interruptible in srcu_read_delay kernel/rcu/rcutorture.c, 1105: [FUNC_PTR]srcu_read_delay in rcu_torture_timer kernel/rcu/rcutorture.c, 1104: spin_lock in rcu_torture_timer
Note that [FUNC_PTR] means a function pointer call is used.
I do not find a good way to fix, so I only report. This is found by my static analysis tool (DSAC).
Thanks, Jia-Ju Bai
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