According to fs/f2fs/trace.c, the kernel module may sleep under a spinlock. The function call path is: f2fs_trace_pid (acquire the spinlock) f2fs_radix_tree_insert cond_resched --> may sleep
I do not find a good way to fix it, so I only report.This possible bug is found by my static analysis tool (DSAC) and my code review.
Thanks, Jia-Ju Bai