last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:21418' (ED25519) to the list of known hosts. syzkaller login: [ 357.732858][ T3178] cgroup: Unknown subsys name 'net' [ 358.523967][ T3178] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 416.100860][ T3178] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 423.143241][ C0] Insufficient stack space to handle exception! [ 423.147424][ C0] Task stack: [0xff200000041b8000..0xff200000041bc000] [ 423.148513][ C0] Overflow stack: [0xff6000006ec70070..0xff6000006ec71070] [ 423.150315][ C0] CPU: 0 UID: 0 PID: 3178 Comm: syz-executor Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 423.152238][ C0] Hardware name: riscv-virtio,qemu (DT) [ 423.153643][ C0] epc : check_preemption_disabled+0x6/0xce [ 423.156673][ C0] ra : debug_smp_processor_id+0x1c/0x26 [ 423.158154][ C0] epc : ffffffff85f3bc94 ra : ffffffff85f3bd78 sp : ff1fffffffffffd0 [ 423.159412][ C0] gp : ffffffff8954c0a0 tp : 0000000000000000 t0 : 0000000000000000 [ 423.160846][ C0] t1 : ffe3ffff00000010 t2 : ff60000010dbd9e0 s0 : ff20000000000020 [ 423.162118][ C0] s1 : ff60000010dbcec0 a0 : ffffffff8670f360 a1 : ffffffff8670f320 [ 423.163375][ C0] a2 : 0000000000000001 a3 : 1ffffffff12c8ed0 a4 : 0000000000000000 [ 423.164649][ C0] a5 : 0000000000000305 a6 : ffffffff808830c4 a7 : 0000000000000003 [ 423.165872][ C0] s2 : ffffffff89647680 s3 : 0000000000000001 s4 : 0000000000000000 [ 423.167119][ C0] s5 : 0000000000000001 s6 : 0000000000000000 s7 : ffffffff808830c4 [ 423.168417][ C0] s8 : 000000000000077d s9 : ff60000072fecfc0 s10: ffffffff908a1980 [ 423.169647][ C0] s11: ff60000072fecfe0 t3 : 0000000000000002 t4 : ffe3ffff00000010 [ 423.170976][ C0] t5 : ffe3ffff00000011 t6 : ff20000000000a40 [ 423.172113][ C0] status: 0000000200000120 badaddr: ff1ffffffffffff8 cause: 000000000000000f [ 423.173963][ C0] Kernel panic - not syncing: Kernel stack overflow [ 423.175891][ C0] CPU: 0 UID: 0 PID: 3178 Comm: syz-executor Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 423.178242][ C0] Hardware name: riscv-virtio,qemu (DT) [ 423.179520][ C0] Call Trace: [ 423.180557][ C0] [] dump_backtrace+0x2e/0x3c [ 423.182020][ C0] [] show_stack+0x34/0x40 [ 423.183234][ C0] [] dump_stack_lvl+0x108/0x196 [ 423.184656][ C0] [] dump_stack+0x1c/0x24 [ 423.186021][ C0] [] panic+0x388/0x806 [ 423.187189][ C0] [] handle_bad_stack+0xe4/0x10c [ 423.188575][ C0] [] debug_smp_processor_id+0x1c/0x26 [ 423.190460][ C0] SMP: stopping secondary CPUs [ 423.192732][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 23:25:43 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff85ec4ffe mhartid 0000000000000000 mstatus 0000000a000001a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f0b509 hedeleg 0000000000000000 mtvec 0000000080000428 stvec ffffffff85f5b9a0 vstvec 0000000000000000 mepc ffffffff85391a32 sepc ffffffff85f3bc94 vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff1ffffffffffff8 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a012b0000009471c x0/zero 0000000000000000 x1/ra ffffffff85ec5412 x2/sp ff6000006ec702e0 x3/gp ffffffff8954c0a0 x4/tp ff60000010dbcec0 x5/t0 ff6000006ec70643 x6/t1 0000000000000043 x7/t2 ff60000010dbd9e0 x8/s0 ff6000006ec70400 x9/s1 ffffffff864481c4 x10/a0 ff6000006ec70645 x11/a1 0000000000000020 x12/a2 0000000000000004 x13/a3 ffffffff85ebc400 x14/a4 0000000000000006 x15/a5 0000000000000000 x16/a6 0000000000ff0100 x17/a7 ff6000006ec705a7 x18/s2 000000000000005d x19/s3 ffffffff864481c4 x20/s4 ff6000006ec70645 x21/s5 ff6000006ec704b8 x22/s6 ff6000006ec70380 x23/s7 ff600000eec7063d x24/s8 ffffffff87310244 x25/s9 0000000000000004 x26/s10 000000007fffffff x27/s11 0000000000000007 x28/t3 ff6000006ec70643 x29/t4 ff6000006ec70643 x30/t5 ffebffff0dd8e0b5 x31/t6 ff6000006ec7063f 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 ffffffff80240204 mhartid 0000000000000001 mstatus 0000000a000000a2 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 a012700000097a00 x0/zero 0000000000000000 x1/ra ffffffff8024019c x2/sp ff2000000000bc00 x3/gp ffffffff8954c0a0 x4/tp ff60000018898000 x5/t0 1fec000003113163 x6/t1 ffebffff028d4348 x7/t2 ff60000018898b20 x8/s0 ff2000000000bc60 x9/s1 ff600000146a1a40 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff8024019c x14/a4 0000000000000000 x15/a5 0000000001240122 x16/a6 ffebffff028d4349 x17/a7 ff600000146a1a43 x18/s2 ffebffff028d4348 x19/s3 ff600000146a1a50 x20/s4 0000000000000000 x21/s5 ff600000146a1a48 x22/s6 1fec0000028d434a x23/s7 0000000000000003 x24/s8 1fec0000028d4349 x25/s9 0000000000000123 x26/s10 1fec0000028d4348 x27/s11 ff6000006ec967d0 x28/t3 ffffffff86257484 x29/t4 ffebffff028d4348 x30/t5 ffebffff028d4349 x31/t6 1fec000003113168 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