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From: Bart Van Assche <bart.vanassche@linux.dev>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
	Boqun Feng <boqun@kernel.org>, Waiman Long <longman@redhat.com>,
	linux-kernel@vger.kernel.org, Marco Elver <elver@google.com>,
	Christoph Hellwig <hch@lst.de>,
	Steven Rostedt <rostedt@goodmis.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Nathan Chancellor <nathan@kernel.org>,
	Kees Cook <kees@kernel.org>, Jann Horn <jannh@google.com>,
	Bart Van Assche <bvanassche@acm.org>,
	Jakub Kicinski <kuba@kernel.org>,
	Shantiprasad Shettar <shantiprasad.shettar@broadcom.com>,
	Stanislav Fomichev <sdf@fomichev.me>,
	netdev@vger.kernel.org
Subject: [PATCH 18/62] bnxt_en: Fix bnxt_dl_reload_up()
Date: Mon, 23 Feb 2026 14:00:18 -0800	[thread overview]
Message-ID: <20260223220102.2158611-19-bart.vanassche@linux.dev> (raw)
In-Reply-To: <20260223220102.2158611-1-bart.vanassche@linux.dev>

From: Bart Van Assche <bvanassche@acm.org>

bnxt_dl_reload_down() calls rtnl_lock() and netdev_lock() if it returns
0. Hence, bnxt_dl_reload_up() should invoke the corresponding unlock
calls. This issue has been detected by the clang thread-sanitizer.
Compile-tested only.

Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Shantiprasad Shettar <shantiprasad.shettar@broadcom.com>
Cc: Stanislav Fomichev <sdf@fomichev.me>
Cc: netdev@vger.kernel.org
Fixes: 004b5008016a ("eth: bnxt: remove most dependencies on RTNL")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 15de802bbac4..1e9a3454bb29 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -562,6 +562,8 @@ static int bnxt_dl_reload_up(struct devlink *dl, enum devlink_reload_action acti
 		break;
 	}
 	default:
+		netdev_unlock(bp->dev);
+		rtnl_unlock();
 		return -EOPNOTSUPP;
 	}
 

  parent reply	other threads:[~2026-02-23 22:02 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20260223220102.2158611-1-bart.vanassche@linux.dev>
2026-02-23 22:00 ` [PATCH 17/62] bnxt_en: Make bnxt_resume() easier to analyze Bart Van Assche
2026-02-23 22:00 ` Bart Van Assche [this message]
2026-02-23 22:00 ` [PATCH 20/62] octeontx2-pf: Fix locking in an error path Bart Van Assche
2026-02-23 22:00 ` [PATCH 21/62] qed: Make _qed_mcp_cmd_and_union() easier to analyze Bart Van Assche
2026-02-23 22:00 ` [PATCH 22/62] mctp i3c: Fix locking in error paths Bart Van Assche
2026-02-25  4:27   ` Matt Johnston
2026-02-23 22:00 ` [PATCH 23/62] net: phy: mxl-86110: Fix locking in an error path Bart Van Assche
2026-02-23 23:12   ` Daniel Golle
2026-02-24  0:19   ` Andrew Lunn
     [not found] <20260223215118.2154194-1-bvanassche@acm.org>
2026-02-23 21:50 ` [PATCH 18/62] bnxt_en: Fix bnxt_dl_reload_up() Bart Van Assche
     [not found] <20260223214950.2153735-1-bvanassche@acm.org>
2026-02-23 21:49 ` Bart Van Assche
2026-02-23 22:17   ` Michael Chan
2026-02-23 22:27     ` Bart Van Assche
2026-02-23 22:37       ` Michael Chan
2026-02-23 22:56         ` Bart Van Assche
2026-02-23 23:42           ` Michael Chan

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