last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:62506' (ED25519) to the list of known hosts. syzkaller login: [ 185.249051][ T3175] cgroup: Unknown subsys name 'net' [ 185.613750][ T3175] cgroup: Unknown subsys name 'cpuset' [ 185.654907][ T3175] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 215.173135][ T3175] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 222.019038][ C0] Insufficient stack space to handle exception! [ 222.020572][ C0] Task stack: [0xff20000000088000..0xff2000000008c000] [ 222.021401][ C0] Overflow stack: [0xff6000006ec18070..0xff6000006ec19070] [ 222.022615][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 222.023909][ C0] Hardware name: riscv-virtio,qemu (DT) [ 222.024822][ C0] epc : do_raw_spin_trylock+0x26/0x290 [ 222.026853][ C0] ra : _raw_spin_trylock+0x26/0xdc [ 222.027794][ C0] epc : ffffffff80250cbc ra : ffffffff85ffb498 sp : ff20000000087f90 [ 222.028701][ C0] gp : ffffffff897baa80 tp : 0000000000000000 t0 : ff20000000088820 [ 222.029639][ C0] t1 : ffebffff0e5fdbba t2 : 0000000000000000 s0 : ff20000000088050 [ 222.030547][ C0] s1 : ffffffffe0000000 a0 : ff6000006ec32fc0 a1 : ffffffff867152a0 [ 222.031467][ C0] a2 : 0000000000000000 a3 : ffebffff0e5fdaff a4 : 0000000041b58ab3 [ 222.032368][ C0] a5 : ff20000000088010 a6 : ffebffff0e5fdbbb a7 : ff60000072feddd7 [ 222.033301][ C0] s2 : ff6000006ec32fc0 s3 : ff20000000088000 s4 : ff20000000088430 [ 222.034194][ C0] s5 : dfffffff00000000 s6 : ff6000006ec32fc0 s7 : 000000000000077c [ 222.035087][ C0] s8 : 0001f000003fffff s9 : ffffffff90b5cb00 s10: 0000000000000000 [ 222.035984][ C0] s11: ff60000072fed7c0 t3 : ff20000000088430 t4 : ffebffff0e5fdbba [ 222.036883][ C0] t5 : ffebffff0e5fdbbb t6 : ff20000000088450 [ 222.037711][ C0] status: 0000000200000120 badaddr: ff20000000087fa0 cause: 000000000000000f [ 222.039067][ C0] Kernel panic - not syncing: Kernel stack overflow [ 222.040383][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 222.042028][ C0] Hardware name: riscv-virtio,qemu (DT) [ 222.042934][ C0] Call Trace: [ 222.043573][ C0] [] dump_backtrace+0x2e/0x3c [ 222.044589][ C0] [] show_stack+0x34/0x40 [ 222.045494][ C0] [] dump_stack_lvl+0x108/0x196 [ 222.046640][ C0] [] dump_stack+0x1c/0x24 [ 222.047598][ C0] [] panic+0x388/0x86c [ 222.048441][ C0] [] handle_bad_stack+0xe4/0x10c [ 222.049402][ C0] [] _raw_spin_trylock+0x26/0xdc [ 222.050592][ C0] SMP: stopping secondary CPUs [ 222.052743][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:07:27 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff8026315a mhartid 0000000000000000 mstatus 0000000a000001a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000444 medeleg 0000000000f0b509 hedeleg 000000000000b109 mtvec 0000000080000428 stvec ffffffff85ffc96c vstvec 0000000000000000 mepc ffffffff804308ee sepc ffffffff80250cbc vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000087fa0 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a011f00000097e4c x0/zero 0000000000000000 x1/ra ffffffff80263156 x2/sp ff6000006ec18870 x3/gp ffffffff897baa80 x4/tp ff600000122ecec0 x5/t0 552030203a555043 x6/t1 0000000000000043 x7/t2 49552030203a5550 x8/s0 ff6000006ec18a10 x9/s1 ffffffff88b20320 x10/a0 0000000000000007 x11/a1 0000000000000000 x12/a2 0000000000f00000 x13/a3 ffffffff80263156 x14/a4 0000000000000000 x15/a5 ff600000122ecec0 x16/a6 0000000000f00000 x17/a7 0000000000000038 x18/s2 1ffffffff116406f x19/s3 0000000200000120 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 ff6000006ec18940 x23/s7 ffffffff88b20378 x24/s8 1ffffffff1164070 x25/s9 ffffffff88b20380 x26/s10 dfffffff00000000 x27/s11 ff6000006ec189a0 x28/t3 ffffffff90969af7 x29/t4 ffffffff90969af7 x30/t5 ffffffff90969af8 x31/t6 ffffffff90969af7 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 ffffffff80250a8c mhartid 0000000000000001 mstatus 0000000a000000a2 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000000 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000444 medeleg 0000000000f0b509 hedeleg 000000000000b109 mtvec 0000000080000428 stvec ffffffff85ffc96c vstvec 0000000000000000 mepc ffffffff8001fafe sepc ffffffff80250a8c vsepc 0000000000000000 mcause 0000000000000009 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080027000 sscratch 0000000000000000 satp a011f00000097e4c x0/zero 0000000000000000 x1/ra ffffffff80250a24 x2/sp ff200000000d3a00 x3/gp ffffffff897baa80 x4/tp ff60000012698000 x5/t0 ff60000012698b20 x6/t1 ffebffff02f3e368 x7/t2 000000000000044a x8/s0 ff200000000d3a60 x9/s1 ff600000179f1b40 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff80250a24 x14/a4 0000000000000000 x15/a5 0000000008530851 x16/a6 ffebffff02f3e369 x17/a7 ff600000179f1b43 x18/s2 ffebffff02f3e368 x19/s3 ff600000179f1b50 x20/s4 0000000000000000 x21/s5 ff600000179f1b48 x22/s6 1fec000002f3e36a x23/s7 0000000000000003 x24/s8 1fec000002f3e369 x25/s9 0000000000000852 x26/s10 1fec000002f3e368 x27/s11 ff6000006ec3e7d0 x28/t3 1fec0000024d3163 x29/t4 ffebffff02f3e368 x30/t5 ffebffff02f3e369 x31/t6 1fec0000024d3168 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