patches for DPDK stable branches
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From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: jerinj@marvell.com, skori@marvell.com, stable@dpdk.org
Subject: [PATCH v3 6/9] trace: fix race in debug dump
Date: Wed, 12 Oct 2022 14:31:09 +0200	[thread overview]
Message-ID: <20221012123112.2951802-7-david.marchand@redhat.com> (raw)
In-Reply-To: <20221012123112.2951802-1-david.marchand@redhat.com>

trace->nb_trace_mem_list access must be under trace->lock to avoid
races with threads allocating/freeing their trace buffers.

Fixes: f6b2d65dcd5d ("trace: implement debug dump")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Sunil Kumar Kori <skori@marvell.com>
---
 lib/eal/common/eal_common_trace.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/eal/common/eal_common_trace.c b/lib/eal/common/eal_common_trace.c
index 6aa11a3b50..ec168e37b3 100644
--- a/lib/eal/common/eal_common_trace.c
+++ b/lib/eal/common/eal_common_trace.c
@@ -259,10 +259,9 @@ trace_lcore_mem_dump(FILE *f)
 	struct __rte_trace_header *header;
 	uint32_t count;
 
-	if (trace->nb_trace_mem_list == 0)
-		return;
-
 	rte_spinlock_lock(&trace->lock);
+	if (trace->nb_trace_mem_list == 0)
+		goto out;
 	fprintf(f, "nb_trace_mem_list = %d\n", trace->nb_trace_mem_list);
 	fprintf(f, "\nTrace mem info\n--------------\n");
 	for (count = 0; count < trace->nb_trace_mem_list; count++) {
@@ -273,6 +272,7 @@ trace_lcore_mem_dump(FILE *f)
 		header->stream_header.lcore_id,
 		header->stream_header.thread_name);
 	}
+out:
 	rte_spinlock_unlock(&trace->lock);
 }
 
-- 
2.37.3


  parent reply	other threads:[~2022-10-12 12:31 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20220921120359.2201131-1-david.marchand@redhat.com>
2022-09-21 12:03 ` [PATCH 1/8] trace: fix mode for new trace point David Marchand
2022-09-21 12:03 ` [PATCH 2/8] trace: fix mode change David Marchand
2022-09-21 12:03 ` [PATCH 3/8] trace: fix leak with regexp David Marchand
2022-09-22 11:00   ` [EXT] " Sunil Kumar Kori
2022-09-23  6:35     ` David Marchand
2022-09-23  7:37       ` Sunil Kumar Kori
2022-09-21 12:03 ` [PATCH 4/8] trace: fix dynamically enabling trace points David Marchand
2022-09-22 11:18   ` [EXT] " Sunil Kumar Kori
2022-09-23  6:36     ` David Marchand
2022-09-21 12:03 ` [PATCH 5/8] trace: fix race in debug dump David Marchand
2022-10-11 14:37   ` Jerin Jacob
2022-09-21 12:03 ` [PATCH 6/8] trace: fix metadata dump David Marchand
     [not found] ` <20221004094418.196544-1-david.marchand@redhat.com>
2022-10-04  9:44   ` [PATCH v2 1/9] trace: fix mode for new trace point David Marchand
2022-10-11 14:16     ` Jerin Jacob
2022-10-12  9:05     ` [EXT] " Sunil Kumar Kori
2022-10-04  9:44   ` [PATCH v2 2/9] trace: fix mode change David Marchand
2022-10-11 14:20     ` Jerin Jacob
2022-10-12  9:07     ` [EXT] " Sunil Kumar Kori
2022-10-04  9:44   ` [PATCH v2 3/9] trace: fix leak with regexp David Marchand
2022-10-11 14:21     ` Jerin Jacob
2022-10-12  9:10     ` [EXT] " Sunil Kumar Kori
2022-10-04  9:44   ` [PATCH v2 5/9] trace: fix dynamically enabling trace points David Marchand
2022-10-12  9:23     ` [EXT] " Sunil Kumar Kori
2022-10-12  9:57       ` David Marchand
2022-10-12 10:15         ` Sunil Kumar Kori
2022-10-04  9:44   ` [PATCH v2 6/9] trace: fix race in debug dump David Marchand
2022-10-12  9:25     ` [EXT] " Sunil Kumar Kori
2022-10-04  9:44   ` [PATCH v2 7/9] trace: fix metadata dump David Marchand
2022-10-12  9:28     ` [EXT] " Sunil Kumar Kori
     [not found] ` <20221012123112.2951802-1-david.marchand@redhat.com>
2022-10-12 12:31   ` [PATCH v3 1/9] trace: fix mode for new trace point David Marchand
2022-10-12 12:31   ` [PATCH v3 2/9] trace: fix mode change David Marchand
2022-10-12 12:31   ` [PATCH v3 3/9] trace: fix leak with regexp David Marchand
2022-10-12 12:31   ` [PATCH v3 5/9] trace: fix dynamically enabling trace points David Marchand
2022-10-13 14:53     ` [EXT] " Harman Kalra
2022-10-13 15:51       ` David Marchand
2022-10-13 17:07         ` Harman Kalra
2022-10-13 19:10           ` David Marchand
2022-10-14  4:26             ` Jerin Jacob
2022-10-14  8:19               ` David Marchand
2022-10-14  8:37                 ` Jerin Jacob
2022-10-12 12:31   ` David Marchand [this message]
2022-10-12 12:31   ` [PATCH v3 7/9] trace: fix metadata dump David Marchand
     [not found] ` <20221018132654.3760561-1-david.marchand@redhat.com>
2022-10-18 13:26   ` [PATCH v4 01/11] trace: fix mode for new trace point David Marchand
2022-10-18 13:26   ` [PATCH v4 02/11] trace: fix mode change David Marchand
2022-10-18 13:26   ` [PATCH v4 03/11] trace: fix leak with regexp David Marchand
2022-10-18 13:26   ` [PATCH v4 05/11] trace: fix dynamically enabling trace points David Marchand
2022-10-18 13:26   ` [PATCH v4 06/11] trace: fix race in debug dump David Marchand
2022-10-18 13:26   ` [PATCH v4 07/11] trace: fix metadata dump David Marchand

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