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Commit 273eea68 authored by Chris Lew's avatar Chris Lew
Browse files

trace: ipc_logging: Fix potential dead in ipc_log_write 



Fix potential deadlock by unlocking spinlock when returning
from an error case during ipc_log_write.

CRs-Fixed: 2059308
Change-Id: If253470d720af1b42f9ebcfb98d69d4c65ab73bc
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent ffd90498

kernel/trace/ipc_logging.c

+4 −1
Original line number Diff line number Diff line
@@ -314,8 +314,11 @@ void ipc_log_write(void *ctxt, struct encode_context *ectxt) 
		ilctxt->write_page->hdr.end_time = t_now;



		ilctxt->write_page = get_next_page(ilctxt, ilctxt->write_page);

		if (WARN_ON(ilctxt->write_page == NULL))

		if (WARN_ON(ilctxt->write_page == NULL)) {

			spin_unlock(&ilctxt->context_lock_lhb1);

			read_unlock_irqrestore(&context_list_lock_lha1, flags);

			return;

		}

		ilctxt->write_page->hdr.write_offset = 0;

		ilctxt->write_page->hdr.start_time = t_now;

		memcpy((ilctxt->write_page->data +