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Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:46498) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1wAVa5-000000002Xb-0zoE; Wed, 08 Apr 2026 17:16:41 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.98.2) (envelope-from ) id 1wAVa2-000000003TA-2L3h; Wed, 08 Apr 2026 17:16:38 +0100 Date: Wed, 8 Apr 2026 17:16:38 +0100 From: "Russell King (Oracle)" To: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-ext4@vger.kernel.org, Linus Torvalds , dmaengine@vger.kernel.org Cc: Marek Szyprowski , Robin Murphy , Theodore Ts'o , Andreas Dilger , Vinod Koul , Frank Li Subject: Re: BUG: net-next (7.0-rc6 based and later) fails to boot on Jetson Xavier NX Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260408_091644_768359_EFDCBB6D X-CRM114-Status: GOOD ( 12.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Apr 08, 2026 at 05:08:34PM +0100, Russell King (Oracle) wrote: > The rebase is still progressing, but it's landed on: > > c7d812e33f3e dmaengine: xilinx: xilinx_dma: Fix unmasked residue subtraction > > and while this boots to a login prompt, it spat out a BUG(): > > BUG: sleeping function called from invalid context at kernel/locking/mutex.c:591 > in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 56, name: kworker/u24:3 > preempt_count: 0, expected: 0 > RCU nest depth: 0, expected: 0 > 3 locks held by kworker/u24:3/56: > #0: ffff000080042148 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x184/0x780 > #1: ffff80008299bdf8 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work+0x1ac/0x780 > #2: ffff0000808b48f8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x2c/0x188 > irq event stamp: 10872 > hardirqs last enabled at (10871): [] ktime_get+0x130/0x180 > hardirqs last disabled at (10872): [] _raw_spin_lock_irqsave+0x84/0x88 > softirqs last enabled at (9216): [] fpsimd_save_and_flush_current_state+0x3c/0x80 > softirqs last disabled at (9214): [] fpsimd_save_and_flush_current_state+0x58/0x80 > CPU: 5 UID: 0 PID: 56 Comm: kworker/u24:3 Not tainted 7.0.0-rc1-bisect+ #654 PREEMPT > Hardware name: NVIDIA NVIDIA Jetson Xavier NX Developer Kit/Jetson, BIOS 6.0-37391689 08/28/2024 > Workqueue: events_unbound deferred_probe_work_func > Call trace: > show_stack+0x18/0x30 (C) > dump_stack_lvl+0x6c/0x94 > dump_stack+0x18/0x24 > __might_resched+0x154/0x220 > __might_sleep+0x48/0x80 > __mutex_lock+0x48/0x800 > mutex_lock_nested+0x24/0x30 > pinmux_disable_setting+0x9c/0x180 > pinctrl_commit_state+0x5c/0x260 > pinctrl_pm_select_idle_state+0x4c/0xa0 > tegra_i2c_runtime_suspend+0x2c/0x3c > pm_generic_runtime_suspend+0x2c/0x44 > __rpm_callback+0x48/0x1ec > rpm_callback+0x74/0x80 > rpm_suspend+0xec/0x630 > rpm_idle+0x2c0/0x420 > __pm_runtime_idle+0x44/0x160 > tegra_i2c_probe+0x2e4/0x640 > platform_probe+0x5c/0xa4 > really_probe+0xbc/0x2c0 > __driver_probe_device+0x78/0x120 > driver_probe_device+0x3c/0x160 > __device_attach_driver+0xbc/0x160 > bus_for_each_drv+0x70/0xb8 > __device_attach+0xa4/0x188 > device_initial_probe+0x50/0x54 > bus_probe_device+0x38/0xa4 > deferred_probe_work_func+0x90/0xcc > process_one_work+0x204/0x780 > worker_thread+0x1c8/0x36c > kthread+0x138/0x144 > ret_from_fork+0x10/0x20 > > This is reproducible. I've just realised that it's the Tegra I2C bug that is already known about, but took ages to be fixed in mainline - it's unrelated to the memory corruption, so can be ignored. Sorry for the noise. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!