last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:6270' (ED25519) to the list of known hosts. syzkaller login: [ 302.517510][ T3182] cgroup: Unknown subsys name 'net' [ 302.999110][ T3182] cgroup: Unknown subsys name 'cpuset' [ 303.055083][ T3182] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 347.024329][ T3182] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 352.995028][ C0] Insufficient stack space to handle exception! [ 352.996783][ C0] Task stack: [0xff20000004370000..0xff20000004374000] [ 352.998096][ C0] Overflow stack: [0xff6000006ec18070..0xff6000006ec19070] [ 353.000265][ C0] CPU: 0 UID: 0 PID: 3182 Comm: syz-executor Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 353.002841][ C0] Hardware name: riscv-virtio,qemu (DT) [ 353.004526][ C0] epc : __lock_acquire+0x1f2/0x8320 [ 353.007807][ C0] ra : lock_acquire.part.0+0x2c6/0x81c [ 353.009409][ C0] epc : ffffffff8023fa54 ra : ffffffff80249ea2 sp : ff1fffffffffff70 [ 353.010724][ C0] gp : ffffffff897baa80 tp : 0000000000000000 t0 : ff6000001a9da560 [ 353.012028][ C0] t1 : ff6000001a9da718 t2 : 0000000000000000 s0 : ff20000000000130 [ 353.013317][ C0] s1 : ffffffff898b8a80 a0 : 0000000000000456 a1 : 00b8000000000000 [ 353.014591][ C0] a2 : 0000000000042456 a3 : 0000000000000017 a4 : 0000000000000000 [ 353.015870][ C0] a5 : ff6000001a9da738 a6 : ffffffff8cfb14e0 a7 : ffffffff808c12be [ 353.017343][ C0] s2 : 000000000000000b s3 : 0000000000000000 s4 : 0000000000000000 [ 353.018738][ C0] s5 : 0000000000000000 s6 : ffffffff897f3f20 s7 : ff6000006ec32fd8 [ 353.021437][ C0] s8 : 0000000000000001 s9 : 0000000000000001 s10: 0000000000000000 [ 353.023011][ C0] s11: ff6000001a9d9a40 t3 : 1fec00000353b4ab t4 : 1fec00000353b4e2 [ 353.024530][ C0] t5 : 1fe400000000000c t6 : 1fec00000353b4e7 [ 353.025765][ C0] status: 0000000200000100 badaddr: ff1fffffffffffe8 cause: 000000000000000f [ 353.027940][ C0] Kernel panic - not syncing: Kernel stack overflow [ 353.030437][ C0] CPU: 0 UID: 0 PID: 3182 Comm: syz-executor Not tainted 6.12.0-rc1-syzkaller-00001-gc625154993d0 #0 [ 353.032655][ C0] Hardware name: riscv-virtio,qemu (DT) [ 353.033721][ C0] Call Trace: [ 353.034626][ C0] [] dump_backtrace+0x2e/0x3c [ 353.036108][ C0] [] show_stack+0x34/0x40 [ 353.037496][ C0] [] dump_stack_lvl+0x108/0x196 [ 353.038963][ C0] [] dump_stack+0x1c/0x24 [ 353.040333][ C0] [] panic+0x388/0x86c [ 353.041541][ C0] [] handle_bad_stack+0xe4/0x10c [ 353.042892][ C0] [] lock_acquire.part.0+0x2c6/0x81c [ 353.044794][ C0] SMP: stopping secondary CPUs [ 353.048041][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 22:58:03 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff81b7c2bc mhartid 0000000000000000 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 ffffffff8023fa54 vsepc 0000000000000000 mcause 0000000000000009 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff1fffffffffffe8 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a012b0000009df2b x0/zero 0000000000000000 x1/ra ffffffff81b7c292 x2/sp ff6000006ec18690 x3/gp ffffffff897baa80 x4/tp ff6000001a9d9a40 x5/t0 4900000000000000 x6/t1 0000000000000001 x7/t2 49552030203a5550 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 0000000000000001 x18/s2 000000000000006f x19/s3 0000000000000000 x20/s4 0000000000000000 x21/s5 0000000000000000 x22/s6 0000000000000000 x23/s7 ffffffff90969b5a x24/s8 dfffffff00000000 x25/s9 fffffffef2168d07 x26/s10 0000000000000010 x27/s11 0000000000000010 x28/t3 ff6000001a9d9a48 x29/t4 0000000000000000 x30/t5 1fec00000353b349 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 ffffffff80250a88 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 ffffffff8000708c sepc ffffffff80250a8c vsepc 0000000000000000 mcause 8000000000000003 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080027000 sscratch 0000000000000000 satp a01270000009c598 x0/zero 0000000000000000 x1/ra ffffffff80250a24 x2/sp ff200000043ab760 x3/gp ffffffff897baa80 x4/tp ff6000001a9d8000 x5/t0 ff6000001a9d8b20 x6/t1 ffebffff0397e368 x7/t2 000000000000044f x8/s0 ff200000043ab7c0 x9/s1 ff6000001cbf1b40 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff80250a24 x14/a4 0000000000000000 x15/a5 0000000001230121 x16/a6 ffebffff0397e369 x17/a7 ff6000001cbf1b43 x18/s2 ffebffff0397e368 x19/s3 ff6000001cbf1b50 x20/s4 0000000000000000 x21/s5 ff6000001cbf1b48 x22/s6 1fec00000397e36a x23/s7 0000000000000003 x24/s8 1fec00000397e369 x25/s9 0000000000000122 x26/s10 1fec00000397e368 x27/s11 ffffffff87134d80 x28/t3 1fec00000353b163 x29/t4 ffebffff0397e368 x30/t5 ffebffff0397e369 x31/t6 1fec00000353b16d 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