Messages in this thread | | | Subject | Re: [PATCH] ubifs: Fix a sleep-in-atomic bug in ubifs_read_nnode | From | Richard Weinberger <> | Date | Mon, 5 Jun 2017 10:25:40 +0200 |
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Jia-Ju Bai,
Am 05.06.2017 um 05:38 schrieb Jia-Ju Bai: > The driver may sleep under a spin lock, and the function call path is: > ubifs_change_lp (acquire the lock by spin_lock) > change_category > ubifs_remove_from_cat > remove_from_lpt_heap > dbg_check_heap > ubifs_lpt_lookup > ubifs_read_nnode > kzalloc(GFP_NOFS) --> may sleep > > To fix it, "GFP_NOFS" is replaced with "GFP_ATOMIC".
So, this happens only when dbg_check_heap() is activated, right?
Thanks, //richard
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