This seems to affect me too; I have a loop on interrupt handler after the first interrupt called.
The version of qemu is latest 3.1 from upstream, so this is not Ubuntu issue. However, have you done with it? Just commenting out env->CP0_Status &= ~(1 << CP0St_EXL); does not help. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1757363 Title: infinite loop due to improper deal with "eret" on mips32 Status in QEMU: Expired Bug description: 1.qemu 2.9.1 release on the official web build with tcg 2.cmd: qemu-system-mips -kernel kernelfile 3. host: ubuntu 16.04.1 with linux kernel 4.6.2 x86_64 guest: mips bigendian 32bit (tplink firmware) detail: static inline void exception_return(CPUMIPSState *env) { debug_pre_eret(env); if (env->CP0_Status & (1 << CP0St_ERL)) { set_pc(env, env->CP0_ErrorEPC); env->CP0_Status &= ~(1 << CP0St_ERL); } else { set_pc(env, env->CP0_EPC); env->CP0_Status &= ~(1 << CP0St_EXL);====================> ISSUE???? } compute_hflags(env); debug_post_eret(env); } void helper_eret(CPUMIPSState *env) { exception_return(env); env->lladdr = 1; } In the Issue Line, there is no check CP0_Status whether int is disabled (should not enter int routine), that result in the cpu can not jump out the int routine. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1757363/+subscriptions
