CVE-2024-50111

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> LoongArch: Enable IRQ if do_ale() triggered in irq-enabled context<br /> <br /> Unaligned access exception can be triggered in irq-enabled context such<br /> as user mode, in this case do_ale() may call get_user() which may cause<br /> sleep. Then we will get:<br /> <br /> BUG: sleeping function called from invalid context at arch/loongarch/kernel/access-helper.h:7<br /> in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 129, name: modprobe<br /> preempt_count: 0, expected: 0<br /> RCU nest depth: 0, expected: 0<br /> CPU: 0 UID: 0 PID: 129 Comm: modprobe Tainted: G W 6.12.0-rc1+ #1723<br /> Tainted: [W]=WARN<br /> Stack : 9000000105e0bd48 0000000000000000 9000000003803944 9000000105e08000<br /> 9000000105e0bc70 9000000105e0bc78 0000000000000000 0000000000000000<br /> 9000000105e0bc78 0000000000000001 9000000185e0ba07 9000000105e0b890<br /> ffffffffffffffff 9000000105e0bc78 73924b81763be05b 9000000100194500<br /> 000000000000020c 000000000000000a 0000000000000000 0000000000000003<br /> 00000000000023f0 00000000000e1401 00000000072f8000 0000007ffbb0e260<br /> 0000000000000000 0000000000000000 9000000005437650 90000000055d5000<br /> 0000000000000000 0000000000000003 0000007ffbb0e1f0 0000000000000000<br /> 0000005567b00490 0000000000000000 9000000003803964 0000007ffbb0dfec<br /> 00000000000000b0 0000000000000007 0000000000000003 0000000000071c1d<br /> ...<br /> Call Trace:<br /> [] show_stack+0x64/0x1a0<br /> [] dump_stack_lvl+0x74/0xb0<br /> [] __might_resched+0x154/0x1a0<br /> [] emulate_load_store_insn+0x6c/0xf60<br /> [] do_ale+0x78/0x180<br /> [] handle_ale+0x128/0x1e0<br /> <br /> So enable IRQ if unaligned access exception is triggered in irq-enabled<br /> context to fix it.