last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:24090' (ED25519) to the list of known hosts. syzkaller login: [ 382.983229][ T3203] cgroup: Unknown subsys name 'net' [ 383.557381][ T3203] cgroup: Unknown subsys name 'cpuset' [ 383.724988][ T3203] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 446.590036][ T3203] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 455.158766][ C1] Insufficient stack space to handle exception! [ 455.159985][ C1] Task stack: [0xff200000042f8000..0xff200000042fc000] [ 455.161248][ C1] Overflow stack: [0xff6000006ec39070..0xff6000006ec3a070] [ 455.162610][ C1] CPU: 1 UID: 0 PID: 3201 Comm: sshd Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 455.164066][ C1] Hardware name: riscv-virtio,qemu (DT) [ 455.165195][ C1] epc : mark_lock+0x18/0x1b14 [ 455.167672][ C1] ra : __lock_acquire+0xab6/0x8320 [ 455.168814][ C1] epc : ffffffff8023d2fa ra : ffffffff80240318 sp : ff20000000007eb0 [ 455.169803][ C1] gp : ffffffff897baa80 tp : 0000000000000000 t0 : ff60000017cc3fa0 [ 455.170735][ C1] t1 : ff60000017cc4130 t2 : 1fec000002f987f0 s0 : ff20000000008050 [ 455.171738][ C1] s1 : ffffffff898b8a80 a0 : ff60000017cc3480 a1 : ff60000017cc4130 [ 455.172784][ C1] a2 : 0000000000000008 a3 : 0000000000000000 a4 : ffffffff90b5cb00 [ 455.173736][ C1] a5 : 000000000000000a a6 : ffffffff8cfb14e0 a7 : 0000000000000004 [ 455.174767][ C1] s2 : 000000000000000a s3 : 000000000000000a s4 : dfffffff00000000 [ 455.175755][ C1] s5 : ffffffff89920ea0 s6 : ffffffff897f3f20 s7 : ff60000017cc3f84 [ 455.176807][ C1] s8 : 0000000000000002 s9 : 0000000000000000 s10: 0000000000001fff [ 455.177755][ C1] s11: ff60000017cc3480 t3 : 1fec000002f987f3 t4 : ffffffff86258484 [ 455.178841][ C1] t5 : 0000000000000001 t6 : 1fec000002f9882a [ 455.179682][ C1] status: 0000000200000100 badaddr: ff20000000007ff8 cause: 000000000000000f [ 455.181614][ C1] Kernel panic - not syncing: Kernel stack overflow [ 455.183101][ C1] CPU: 1 UID: 0 PID: 3201 Comm: sshd Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 455.184875][ C1] Hardware name: riscv-virtio,qemu (DT) [ 455.186610][ C1] Call Trace: [ 455.187620][ C1] [] dump_backtrace+0x2e/0x3c [ 455.188738][ C1] [] show_stack+0x34/0x40 [ 455.189682][ C1] [] dump_stack_lvl+0x108/0x196 [ 455.190726][ C1] [] dump_stack+0x1c/0x24 [ 455.191724][ C1] [] panic+0x388/0x86c [ 455.192628][ C1] [] handle_bad_stack+0xe4/0x10c [ 455.193618][ C1] [] __lock_acquire+0xab6/0x8320 [ 455.195239][ C1] SMP: stopping secondary CPUs [ 455.197929][ C1] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:07:58 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff8033f41e mhartid 0000000000000000 mstatus 0000000a000001a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000000 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000444 medeleg 0000000000f0b509 hedeleg 000000000000b109 mtvec 0000000080000428 stvec ffffffff85ffc96c vstvec 0000000000000000 mepc ffffffff84c879be sepc ffffffff80250a8c vsepc 0000000000000000 mcause 8000000000000003 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a01490000009dece x0/zero 0000000000000000 x1/ra ffffffff844cd7a8 x2/sp ff200000000037a0 x3/gp ffffffff897baa80 x4/tp ff600000122ecec0 x5/t0 ff600000122ed9e0 x6/t1 ff600000122eda08 x7/t2 000000000000003c x8/s0 ff200000000037c0 x9/s1 000000011337f4ac x10/a0 00000000000126e0 x11/a1 ff6000006ec2bd40 x12/a2 00000000000f0000 x13/a3 ffffffff844cd7a8 x14/a4 0000000000010000 x15/a5 ff600000122ecec0 x16/a6 00000000000f0000 x17/a7 0000000020938178 x18/s2 00000000000126e0 x19/s3 0000000000000000 x20/s4 000000000000001e x21/s5 0000000000732fe4 x22/s6 ffebffff0dd83ab4 x23/s7 0000000000000004 x24/s8 ff6000006ec1d540 x25/s9 ff6000006ec1d594 x26/s10 7fffffffffffffff x27/s11 1fec00000dd83ae5 x28/t3 1fec00000245db3b x29/t4 000000000000000c x30/t5 cf5845a49c6a17af x31/t6 1fec00000245db45 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 ffffffff81b7c2c0 mhartid 0000000000000001 mstatus 0000000a00000180 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000444 medeleg 0000000000f0b509 hedeleg 000000000000b109 mtvec 0000000080000428 stvec ffffffff85ffc96c vstvec 0000000000000000 mepc ffffffff8001fafe sepc ffffffff8023d2fa vsepc 0000000000000000 mcause 0000000000000009 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000007ff8 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080027000 sscratch 0000000000000000 satp a01490000009dece x0/zero 0000000000000000 x1/ra ffffffff81b7c292 x2/sp ff6000006ec396d0 x3/gp ffffffff897baa80 x4/tp ff60000017cc3480 x5/t0 0000000000000000 x6/t1 0000000000000001 x7/t2 2065726177647261 x8/s0 ff6000006ec39710 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 0000000000000001 x18/s2 0000000000000036 x19/s3 0000000000000000 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 0000000000000000 x23/s7 ffffffff90969b03 x24/s8 dfffffff00000000 x25/s9 fffffffef2168d07 x26/s10 0000000000000010 x27/s11 0000000000000010 x28/t3 ff60000017cc3488 x29/t4 0000000000000000 x30/t5 1fec000002f98691 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