CVE-2023-53760

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> scsi: ufs: core: mcq: Fix &amp;hwq-&gt;cq_lock deadlock issue<br /> <br /> When ufshcd_err_handler() is executed, CQ event interrupt can enter waiting<br /> for the same lock. This can happen in ufshcd_handle_mcq_cq_events() and<br /> also in ufs_mtk_mcq_intr(). The following warning message will be generated<br /> when &amp;hwq-&gt;cq_lock is used in IRQ context with IRQ enabled. Use<br /> ufshcd_mcq_poll_cqe_lock() with spin_lock_irqsave instead of spin_lock to<br /> resolve the deadlock issue.<br /> <br /> [name:lockdep&amp;]WARNING: inconsistent lock state<br /> [name:lockdep&amp;]--------------------------------<br /> [name:lockdep&amp;]inconsistent {IN-HARDIRQ-W} -&gt; {HARDIRQ-ON-W} usage.<br /> [name:lockdep&amp;]kworker/u16:4/260 [HC0[0]:SC0[0]:HE1:SE1] takes:<br /> ffffff8028444600 (&amp;hwq-&gt;cq_lock){?.-.}-{2:2}, at:<br /> ufshcd_mcq_poll_cqe_lock+0x30/0xe0<br /> [name:lockdep&amp;]{IN-HARDIRQ-W} state was registered at:<br /> lock_acquire+0x17c/0x33c<br /> _raw_spin_lock+0x5c/0x7c<br /> ufshcd_mcq_poll_cqe_lock+0x30/0xe0<br /> ufs_mtk_mcq_intr+0x60/0x1bc [ufs_mediatek_mod]<br /> __handle_irq_event_percpu+0x140/0x3ec<br /> handle_irq_event+0x50/0xd8<br /> handle_fasteoi_irq+0x148/0x2b0<br /> generic_handle_domain_irq+0x4c/0x6c<br /> gic_handle_irq+0x58/0x134<br /> call_on_irq_stack+0x40/0x74<br /> do_interrupt_handler+0x84/0xe4<br /> el1_interrupt+0x3c/0x78<br /> <br /> <br /> Possible unsafe locking scenario:<br /> CPU0<br /> ----<br /> lock(&amp;hwq-&gt;cq_lock);<br /> <br /> lock(&amp;hwq-&gt;cq_lock);<br /> *** DEADLOCK ***<br /> 2 locks held by kworker/u16:4/260:<br /> <br /> [name:lockdep&amp;]<br /> stack backtrace:<br /> CPU: 7 PID: 260 Comm: kworker/u16:4 Tainted: G S W OE<br /> 6.1.17-mainline-android14-2-g277223301adb #1<br /> Workqueue: ufs_eh_wq_0 ufshcd_err_handler<br /> <br /> Call trace:<br /> dump_backtrace+0x10c/0x160<br /> show_stack+0x20/0x30<br /> dump_stack_lvl+0x98/0xd8<br /> dump_stack+0x20/0x60<br /> print_usage_bug+0x584/0x76c<br /> mark_lock_irq+0x488/0x510<br /> mark_lock+0x1ec/0x25c<br /> __lock_acquire+0x4d8/0xffc<br /> lock_acquire+0x17c/0x33c<br /> _raw_spin_lock+0x5c/0x7c<br /> ufshcd_mcq_poll_cqe_lock+0x30/0xe0<br /> ufshcd_poll+0x68/0x1b0<br /> ufshcd_transfer_req_compl+0x9c/0xc8<br /> ufshcd_err_handler+0x3bc/0xea0<br /> process_one_work+0x2f4/0x7e8<br /> worker_thread+0x234/0x450<br /> kthread+0x110/0x134<br /> ret_from_fork+0x10/0x20