last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:57491' (ED25519) to the list of known hosts. syzkaller login: [ 338.726226][ T3173] cgroup: Unknown subsys name 'net' [ 339.226654][ T3173] cgroup: Unknown subsys name 'cpuset' [ 339.374526][ T3173] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 396.903728][ T3173] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 404.799964][ C0] Insufficient stack space to handle exception! [ 404.802702][ C0] Task stack: [0xff20000000088000..0xff2000000008c000] [ 404.804125][ C0] Overflow stack: [0xff6000006ec18070..0xff6000006ec19070] [ 404.806407][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 404.809084][ C0] Hardware name: riscv-virtio,qemu (DT) [ 404.810920][ C0] epc : get_page_from_freelist+0x46/0x295a [ 404.814808][ C0] ra : __alloc_pages_noprof+0x1e2/0x1eb6 [ 404.816801][ C0] epc : ffffffff808c093c ra : ffffffff808c3dd2 sp : ff20000000087f80 [ 404.818545][ C0] gp : ffffffff897baa80 tp : 0000000000000000 t0 : ff20000000088720 [ 404.820065][ C0] t1 : 0000000000000000 t2 : ff6000006ec33088 s0 : ff200000000881d0 [ 404.821624][ C0] s1 : ff20000000088160 a0 : 0000000000092820 a1 : 0000000000000002 [ 404.823127][ C0] a2 : 0000000000000801 a3 : 0000000041b59000 a4 : 0000000000000001 [ 404.824649][ C0] a5 : ff20000000088160 a6 : ff20000000088340 a7 : 0000000000000000 [ 404.826283][ C0] s2 : 0000000000092820 s3 : ff20000000088330 s4 : 0000000000000800 [ 404.827822][ C0] s5 : 1fe4000000011058 s6 : 0000000000092820 s7 : 0000000000000000 [ 404.829658][ C0] s8 : ff20000000088400 s9 : 0000000000092820 s10: 0000000000000000 [ 404.831265][ C0] s11: 0000000000000002 t3 : ff20000000088330 t4 : ffe37fff000ef1e6 [ 404.832750][ C0] t5 : 0000000003ffffff t6 : 1fec00000245db68 [ 404.834071][ C0] status: 0000000200000120 badaddr: ff20000000087fa8 cause: 000000000000000f [ 404.836603][ C0] Kernel panic - not syncing: Kernel stack overflow [ 404.839219][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 404.843047][ C0] Hardware name: riscv-virtio,qemu (DT) [ 404.844534][ C0] Call Trace: [ 404.845830][ C0] [] dump_backtrace+0x2e/0x3c [ 404.848037][ C0] [] show_stack+0x34/0x40 [ 404.849667][ C0] [] dump_stack_lvl+0x108/0x196 [ 404.851306][ C0] [] dump_stack+0x1c/0x24 [ 404.852934][ C0] [] panic+0x388/0x86c [ 404.854387][ C0] [] handle_bad_stack+0xe4/0x10c [ 404.855986][ C0] [] __alloc_pages_noprof+0x1e2/0x1eb6 [ 404.858506][ C0] SMP: stopping secondary CPUs [ 404.862594][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 23:10:44 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff81b7c2bc 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 ffffffff80250a8c sepc ffffffff808c093c vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000087fa8 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a011f0000009c3b3 x0/zero 0000000000000000 x1/ra ffffffff81b7c292 x2/sp ff6000006ec18690 x3/gp ffffffff897baa80 x4/tp ff600000122ecec0 x5/t0 ff600000122ed9e0 x6/t1 ff600000122edbc0 x7/t2 0000000000000229 x8/s0 ff6000006ec186d0 x9/s1 ffffffff90b467e0 x10/a0 ffffffff90b46828 x11/a1 000000000000001f x12/a2 0000000000f00000 x13/a3 ffffffff81b7c292 x14/a4 1ffffffff2168d05 x15/a5 ff200000000a5000 x16/a6 0000000000f00000 x17/a7 000000000332b3d4 x18/s2 0000000000000030 x19/s3 0000000000000000 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 0000000000000000 x23/s7 ffffffff90969b57 x24/s8 dfffffff00000000 x25/s9 fffffffef2168d07 x26/s10 0000000000000010 x27/s11 0000000000000010 x28/t3 1fec00000245db3b x29/t4 0000000000000006 x30/t5 117799f25e745887 x31/t6 1fec00000245db7c 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 a011f0000009c3b3 x0/zero 0000000000000000 x1/ra ffffffff80250a24 x2/sp ff2000000000bb90 x3/gp ffffffff897baa80 x4/tp ff60000019514ec0 x5/t0 ff600000195159e0 x6/t1 ffebffff03b5f368 x7/t2 000000000000044d x8/s0 ff2000000000bbf0 x9/s1 ff6000001daf9b40 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff80250a24 x14/a4 0000000000000000 x15/a5 0000000001b701b5 x16/a6 ffebffff03b5f369 x17/a7 ff6000001daf9b43 x18/s2 ffebffff03b5f368 x19/s3 ff6000001daf9b50 x20/s4 0000000000000000 x21/s5 ff6000001daf9b48 x22/s6 1fec000003b5f36a x23/s7 0000000000000003 x24/s8 1fec000003b5f369 x25/s9 00000000000001b6 x26/s10 1fec000003b5f368 x27/s11 ff6000006ec3e7d0 x28/t3 1fec0000032a2b3b x29/t4 ffebffff03b5f368 x30/t5 ffebffff03b5f369 x31/t6 1fec0000032a2b40 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