From: Wander Lairson Costa <wander@redhat.com>
To: Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Clark Williams <clrkwllms@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
intel-wired-lan@lists.osuosl.org (moderated list:INTEL ETHERNET
DRIVERS), netdev@vger.kernel.org (open list:NETWORKING DRIVERS),
linux-kernel@vger.kernel.org (open list),
linux-rt-devel@lists.linux.dev (open list:Real-time Linux
(PREEMPT_RT):Keyword:PREEMPT_RT)
Cc: tglx@linutronix.de, Wander Lairson Costa <wander@redhat.com>
Subject: [Intel-wired-lan] [PATCH] Revert "igb: Disable threaded IRQ for igb_msix_other"
Date: Mon, 4 Nov 2024 09:40:50 -0300 [thread overview]
Message-ID: <20241104124050.22290-1-wander@redhat.com> (raw)
This reverts commit 338c4d3902feb5be49bfda530a72c7ab860e2c9f.
Sebastian noticed the ISR indirectly acquires spin_locks, which are
sleeping locks under PREEMPT_RT, which leads to kernel splats.
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index b83df5f94b1f..f1d088168723 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -907,7 +907,7 @@ static int igb_request_msix(struct igb_adapter *adapter)
int i, err = 0, vector = 0, free_vector = 0;
err = request_irq(adapter->msix_entries[vector].vector,
- igb_msix_other, IRQF_NO_THREAD, netdev->name, adapter);
+ igb_msix_other, 0, netdev->name, adapter);
if (err)
goto err_out;
--
2.47.0
WARNING: multiple messages have this Message-ID (diff)
From: Wander Lairson Costa <wander@redhat.com>
To: Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Clark Williams <clrkwllms@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
intel-wired-lan@lists.osuosl.org (moderated list:INTEL ETHERNET
DRIVERS), netdev@vger.kernel.org (open list:NETWORKING DRIVERS),
linux-kernel@vger.kernel.org (open list),
linux-rt-devel@lists.linux.dev (open list:Real-time Linux
(PREEMPT_RT):Keyword:PREEMPT_RT)
Cc: tglx@linutronix.de, Wander Lairson Costa <wander@redhat.com>
Subject: [PATCH] Revert "igb: Disable threaded IRQ for igb_msix_other"
Date: Mon, 4 Nov 2024 09:40:50 -0300 [thread overview]
Message-ID: <20241104124050.22290-1-wander@redhat.com> (raw)
This reverts commit 338c4d3902feb5be49bfda530a72c7ab860e2c9f.
Sebastian noticed the ISR indirectly acquires spin_locks, which are
sleeping locks under PREEMPT_RT, which leads to kernel splats.
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index b83df5f94b1f..f1d088168723 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -907,7 +907,7 @@ static int igb_request_msix(struct igb_adapter *adapter)
int i, err = 0, vector = 0, free_vector = 0;
err = request_irq(adapter->msix_entries[vector].vector,
- igb_msix_other, IRQF_NO_THREAD, netdev->name, adapter);
+ igb_msix_other, 0, netdev->name, adapter);
if (err)
goto err_out;
--
2.47.0
next reply other threads:[~2024-11-04 12:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-04 12:40 Wander Lairson Costa [this message]
2024-11-04 12:40 ` [PATCH] Revert "igb: Disable threaded IRQ for igb_msix_other" Wander Lairson Costa
2024-11-06 1:54 ` [Intel-wired-lan] " Jakub Kicinski
2024-11-06 1:54 ` Jakub Kicinski
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