last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:1801' (ED25519) to the list of known hosts. syzkaller login: [ 356.458029][ T3170] cgroup: Unknown subsys name 'net' [ 357.206498][ T3170] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 410.212470][ T3170] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 425.657761][ C0] Insufficient stack space to handle exception! [ 425.661850][ C0] Task stack: [0xff20000000088000..0xff2000000008c000] [ 425.663240][ C0] Overflow stack: [0xff6000006ec70070..0xff6000006ec71070] [ 425.665284][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 425.667414][ C0] Hardware name: riscv-virtio,qemu (DT) [ 425.668987][ C0] epc : do_raw_spin_trylock+0x26/0x290 [ 425.672133][ C0] ra : _raw_spin_trylock+0x26/0xdc [ 425.673673][ C0] epc : ffffffff80240434 ra : ffffffff85f5a4ce sp : ff20000000087fb0 [ 425.675115][ C0] gp : ffffffff8954c0a0 tp : 0000000000000000 t0 : 0000000000000000 [ 425.676528][ C0] t1 : ffebffff0e5fdaba t2 : ff60000011ee59e0 s0 : ff20000000088070 [ 425.677970][ C0] s1 : ffffffffe0000000 a0 : ff6000006ec8b100 a1 : ffffffff8670f320 [ 425.679400][ C0] a2 : 0000000000000000 a3 : ffebffff0e5fd9ff a4 : 0000000041b58ab3 [ 425.681416][ C0] a5 : ff20000000088030 a6 : ffebffff0e5fdabb a7 : ff60000072fed5d7 [ 425.682853][ C0] s2 : ff6000006ec8b100 s3 : ff20000000088020 s4 : dfffffff00000000 [ 425.684240][ C0] s5 : 0000000000000002 s6 : ff60000072fee340 s7 : ffffffff908a1980 [ 425.685625][ C0] s8 : 000000000000077d s9 : ff60000072fecfc0 s10: ffffffff908a1980 [ 425.687015][ C0] s11: ff60000072fecfe0 t3 : 0000000000000002 t4 : ffebffff0e5fdaba [ 425.688348][ C0] t5 : ffebffff0e5fdabb t6 : ff200000000889a0 [ 425.689571][ C0] status: 0000000200000120 badaddr: ff20000000087fc0 cause: 000000000000000f [ 425.691746][ C0] Kernel panic - not syncing: Kernel stack overflow [ 425.693792][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 425.696117][ C0] Hardware name: riscv-virtio,qemu (DT) [ 425.697240][ C0] Call Trace: [ 425.698201][ C0] [] dump_backtrace+0x2e/0x3c [ 425.699671][ C0] [] show_stack+0x34/0x40 [ 425.701036][ C0] [] dump_stack_lvl+0x108/0x196 [ 425.702882][ C0] [] dump_stack+0x1c/0x24 [ 425.704434][ C0] [] panic+0x388/0x806 [ 425.705703][ C0] [] handle_bad_stack+0xe4/0x10c [ 425.707134][ C0] [] _raw_spin_trylock+0x26/0xdc [ 425.708956][ C0] SMP: stopping secondary CPUs [ 425.711924][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 10:15:38 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff80240204 mhartid 0000000000000000 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 0000000080029000 sscratch 0000000000000000 satp a011f0000009d68c x0/zero 0000000000000000 x1/ra ffffffff8024019c x2/sp ff2000000000bb90 x3/gp ffffffff8954c0a0 x4/tp ff60000017f01a40 x5/t0 1fec000002fe04ab x6/t1 ffebffff03ac54d0 x7/t2 ff60000017f02560 x8/s0 ff2000000000bbf0 x9/s1 ff6000001d62a680 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff8024019c x14/a4 0000000000000000 x15/a5 0000000010ab10a9 x16/a6 ffebffff03ac54d1 x17/a7 ff6000001d62a683 x18/s2 ffebffff03ac54d0 x19/s3 ff6000001d62a690 x20/s4 0000000000000000 x21/s5 ff6000001d62a688 x22/s6 1fec000003ac54d2 x23/s7 0000000000000003 x24/s8 1fec000003ac54d1 x25/s9 00000000000010aa x26/s10 1fec000003ac54d0 x27/s11 ff6000006ec967d0 x28/t3 ffffffff86257484 x29/t4 ffebffff03ac54d0 x30/t5 ffebffff03ac54d1 x31/t6 1fec000002fe04b0 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 ffffffff80237bd8 mhartid 0000000000000001 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 ffffffff80239758 sepc ffffffff80240434 vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000087fc0 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080027000 sscratch 0000000000000000 satp a011f0000009d68c x0/zero 0000000000000000 x1/ra ffffffff80237f18 x2/sp ff6000006ec707e0 x3/gp ffffffff8954c0a0 x4/tp ff60000011ee4ec0 x5/t0 1fec0000023dcb3b x6/t1 ffebffff0dd8e07c x7/t2 ff60000011ee59e0 x8/s0 ff6000006ec70900 x9/s1 1fec00000dd8e100 x10/a0 ff60000011ee59dc x11/a1 ffffffff908a1980 x12/a2 0000000000000002 x13/a3 1ffffffff12c8ed0 x14/a4 ffffffff87cd24d0 x15/a5 ffffffff8968c3e0 x16/a6 0000000000ff0100 x17/a7 ff6000006ec703e7 x18/s2 ffffffff908a1980 x19/s3 ffffffff87cd24d0 x20/s4 ffffffff86257708 x21/s5 ffffffff80252412 x22/s6 0000000200000120 x23/s7 ff6000006ec70880 x24/s8 ffffffff89584780 x25/s9 0000000000000000 x26/s10 0000000000000000 x27/s11 ff6000006ec70a00 x28/t3 ffffffff86257484 x29/t4 ffebffff0dd8e07c x30/t5 ffebffff0dd8e07d x31/t6 ff6000006ec703f8 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