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kprobes: Don't call BUG_ON() if there is a kprobe in use on free list
[ Upstream commit cbdd96f558
]
Instead of calling BUG_ON(), if we find a kprobe in use on free kprobe
list, just remove it from the list and keep it on kprobe hash list
as same as other in-use kprobes.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Naveen N . Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/153666126882.21306.10738207224288507996.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
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1 changed files with 7 additions and 1 deletions
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@ -544,8 +544,14 @@ static void do_free_cleaned_kprobes(void)
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struct optimized_kprobe *op, *tmp;
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list_for_each_entry_safe(op, tmp, &freeing_list, list) {
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BUG_ON(!kprobe_unused(&op->kp));
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list_del_init(&op->list);
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if (WARN_ON_ONCE(!kprobe_unused(&op->kp))) {
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/*
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* This must not happen, but if there is a kprobe
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* still in use, keep it on kprobes hash list.
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*/
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continue;
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}
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free_aggr_kprobe(&op->kp);
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}
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}
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