last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:51706' (ED25519) to the list of known hosts. syzkaller login: [ 368.885178][ T3174] cgroup: Unknown subsys name 'net' [ 369.600604][ T3174] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 427.969078][ T3174] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 438.897645][ C0] Insufficient stack space to handle exception! [ 438.899379][ C0] Task stack: [0xff20000000088000..0xff2000000008c000] [ 438.900800][ C0] Overflow stack: [0xff6000006ec70070..0xff6000006ec71070] [ 438.902907][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 438.905411][ C0] Hardware name: riscv-virtio,qemu (DT) [ 438.907074][ C0] epc : __bfs+0x6/0x586 [ 438.910209][ C0] ra : check_irq_usage+0x1d6/0x1466 [ 438.911783][ C0] epc : ffffffff80226be4 ra : ffffffff8022b788 sp : ff20000000087f50 [ 438.913562][ C0] gp : ffffffff8954c0a0 tp : 0000000000000000 t0 : 1fec0000023dcb3b [ 438.915176][ C0] t1 : ff60000011ee5b48 t2 : ff60000011ee59e0 s0 : ff20000000088290 [ 438.916695][ C0] s1 : ff20000000088140 a0 : ff20000000088140 a1 : ff200000000880c0 [ 438.918143][ C0] a2 : ffffffff802255fe a3 : ffffffff80222a9a a4 : 0000000000000000 [ 438.919713][ C0] a5 : 0000000000000030 a6 : ffffffffe0000000 a7 : 0000000000000004 [ 438.921241][ C0] s2 : ff20000000088220 s3 : ff200000000881a0 s4 : ffffffff8cd1d9f0 [ 438.922779][ C0] s5 : ff60000011ee5b40 s6 : ffffffff8968bf60 s7 : 1fec0000023dcb68 [ 438.924384][ C0] s8 : ffffffff8968bf60 s9 : 000000000000001a s10: 000000000004a01a [ 438.925859][ C0] s11: ff60000011ee5b20 t3 : ffffffffffffffff t4 : fffffffef12c91f0 [ 438.927260][ C0] t5 : ffffffff89655e40 t6 : 1fec0000023dcb6d [ 438.928512][ C0] status: 0000000200000100 badaddr: ff20000000087fe8 cause: 000000000000000f [ 438.930611][ C0] Kernel panic - not syncing: Kernel stack overflow [ 438.932675][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 438.935441][ C0] Hardware name: riscv-virtio,qemu (DT) [ 438.936652][ C0] Call Trace: [ 438.938236][ C0] [] dump_backtrace+0x2e/0x3c [ 438.939920][ C0] [] show_stack+0x34/0x40 [ 438.941325][ C0] [] dump_stack_lvl+0x108/0x196 [ 438.942948][ C0] [] dump_stack+0x1c/0x24 [ 438.945807][ C0] [] panic+0x388/0x806 [ 438.947148][ C0] [] handle_bad_stack+0xe4/0x10c [ 438.948694][ C0] [] check_irq_usage+0x1d6/0x1466 [ 438.950677][ C0] SMP: stopping secondary CPUs [ 438.953908][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 23:25:59 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff81b0b9e8 mhartid 0000000000000000 mstatus 0000000a00000180 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f0b509 hedeleg 0000000000000000 mtvec 0000000080000428 stvec ffffffff85f5b9a0 vstvec 0000000000000000 mepc ffffffff85f5a3f4 sepc ffffffff80226be4 vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000087fe8 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a012b0000009b223 x0/zero 0000000000000000 x1/ra ffffffff81b0b9be x2/sp ff6000006ec70720 x3/gp ffffffff8954c0a0 x4/tp ff60000011ee4ec0 x5/t0 552030203a555043 x6/t1 0000000000000001 x7/t2 49552030203a5550 x8/s0 ff6000006ec70760 x9/s1 ffffffff9088b3e0 x10/a0 ffffffff9088b428 x11/a1 000000000000001f x12/a2 0000000000000000 x13/a3 ffffffff81b0b9be x14/a4 1ffffffff2111685 x15/a5 ff200000000a5000 x16/a6 0000000000ff0100 x17/a7 0000000000000001 x18/s2 000000000000005b x19/s3 0000000000000000 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 0000000000000000 x23/s7 ffffffff906d4c11 x24/s8 dfffffff00000000 x25/s9 fffffffef2111687 x26/s10 0000000000000010 x27/s11 0000000000000010 x28/t3 ff60000011ee4ec8 x29/t4 0000000000000000 x30/t5 1fec0000023dc9d9 x31/t6 ffffffff906d4bb7 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 CPU#1 V = 0 pc ffffffff8444d4c4 mhartid 0000000000000001 mstatus 0000000a000001a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000000 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f0b509 hedeleg 0000000000000000 mtvec 0000000080000428 stvec ffffffff85f5b9a0 vstvec 0000000000000000 mepc ffffffff8001f472 sepc ffffffff80240204 vsepc 0000000000000000 mcause 0000000000000009 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080027000 sscratch 0000000000000000 satp a012700000097930 x0/zero 0000000000000000 x1/ra ffffffff8444d4c4 x2/sp ff2000000000b7a0 x3/gp ffffffff8954c0a0 x4/tp ff60000013adb480 x5/t0 1fec00000275b7f3 x6/t1 ff60000013adbff0 x7/t2 ff60000013adbfa0 x8/s0 ff2000000000b7c0 x9/s1 000000010a59c48e x10/a0 0000000000014645 x11/a1 ff6000006eca4d40 x12/a2 000000000000001e x13/a3 ffffffff8444d4c4 x14/a4 0000000000000000 x15/a5 ff60000013adb480 x16/a6 0000000000ff0100 x17/a7 000000000000000f x18/s2 0000000000014645 x19/s3 0000000000000000 x20/s4 000000000000001e x21/s5 00000000007f7358 x22/s6 ffebffff0dd92cb4 x23/s7 0000000000000004 x24/s8 ff6000006ec96540 x25/s9 ff6000006ec96594 x26/s10 7fffffffffffffff x27/s11 1fec00000dd92ce5 x28/t3 ffffffff86257484 x29/t4 ffffffffffffffff x30/t5 ffffffff89655e40 x31/t6 1fec00000275b802 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000