6.6-stable review patch. If anyone has any objections, please let me know.
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From: Edmund Raile edmund.raile@proton.me
commit 575801663c7dc38f826212b39e3b91a4a8661c33 upstream.
Commit 5a95f1ded28691e6 ("firewire: ohci: use devres for requested IRQ") also removed the call to free_irq() in pci_remove(), leading to a leftover irq of devm_request_irq() at pci_disable_msi() in pci_remove() when unbinding the driver from the device
remove_proc_entry: removing non-empty directory 'irq/136', leaking at least 'firewire_ohci' Call Trace: ? remove_proc_entry+0x19c/0x1c0 ? __warn+0x81/0x130 ? remove_proc_entry+0x19c/0x1c0 ? report_bug+0x171/0x1a0 ? console_unlock+0x78/0x120 ? handle_bug+0x3c/0x80 ? exc_invalid_op+0x17/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? remove_proc_entry+0x19c/0x1c0 unregister_irq_proc+0xf4/0x120 free_desc+0x3d/0xe0 ? kfree+0x29f/0x2f0 irq_free_descs+0x47/0x70 msi_domain_free_locked.part.0+0x19d/0x1d0 msi_domain_free_irqs_all_locked+0x81/0xc0 pci_free_msi_irqs+0x12/0x40 pci_disable_msi+0x4c/0x60 pci_remove+0x9d/0xc0 [firewire_ohci 01b483699bebf9cb07a3d69df0aa2bee71db1b26] pci_device_remove+0x37/0xa0 device_release_driver_internal+0x19f/0x200 unbind_store+0xa1/0xb0
remove irq with devm_free_irq() before pci_disable_msi() also remove it in fail_msi: of pci_probe() as this would lead to an identical leak
Cc: stable@vger.kernel.org Fixes: 5a95f1ded28691e6 ("firewire: ohci: use devres for requested IRQ") Signed-off-by: Edmund Raile edmund.raile@proton.me Link: https://lore.kernel.org/r/20240229144723.13047-2-edmund.raile@proton.me Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/firewire/ohci.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -3773,6 +3773,7 @@ static int pci_probe(struct pci_dev *dev return 0;
fail_msi: + devm_free_irq(&dev->dev, dev->irq, ohci); pci_disable_msi(dev);
return err; @@ -3800,6 +3801,7 @@ static void pci_remove(struct pci_dev *d
software_reset(ohci);
+ devm_free_irq(&dev->dev, dev->irq, ohci); pci_disable_msi(dev);
dev_notice(&dev->dev, "removing fw-ohci device\n");