last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:34706' (ED25519) to the list of known hosts. syzkaller login: [ 169.577701][ T3169] cgroup: Unknown subsys name 'net' [ 169.888338][ T3169] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 198.461998][ T3169] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 202.207057][ C0] Insufficient stack space to handle exception! [ 202.207838][ C0] Task stack: [0xff20000000088000..0xff2000000008c000] [ 202.208490][ C0] Overflow stack: [0xff6000006ec70070..0xff6000006ec71070] [ 202.209471][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 202.210530][ C0] Hardware name: riscv-virtio,qemu (DT) [ 202.211305][ C0] epc : __bfs+0x6/0x586 [ 202.212910][ C0] ra : check_irq_usage+0x1d6/0x1466 [ 202.213694][ C0] epc : ffffffff80226be4 ra : ffffffff8022b788 sp : ff20000000087f50 [ 202.214394][ C0] gp : ffffffff8954c0a0 tp : 0000000000000000 t0 : 1fec0000023dcb3b [ 202.215089][ C0] t1 : ff60000011ee5b48 t2 : ff60000011ee59e0 s0 : ff20000000088290 [ 202.215780][ C0] s1 : ff20000000088140 a0 : ff20000000088140 a1 : ff200000000880c0 [ 202.216504][ C0] a2 : ffffffff802255fe a3 : ffffffff80222a9a a4 : 0000000000000000 [ 202.217202][ C0] a5 : 0000000000000030 a6 : ffffffffe0000000 a7 : 0000000000000004 [ 202.217890][ C0] s2 : ff20000000088220 s3 : ff200000000881a0 s4 : ffffffff8cd1d9f0 [ 202.218589][ C0] s5 : ff60000011ee5b40 s6 : ffffffff8968bf60 s7 : 1fec0000023dcb68 [ 202.219350][ C0] s8 : ffffffff8968bf60 s9 : 000000000000001a s10: 000000000004a01a [ 202.220058][ C0] s11: ff60000011ee5b20 t3 : ffffffffffffffff t4 : fffffffef12c91f0 [ 202.220764][ C0] t5 : ffffffff89655e40 t6 : 1fec0000023dcb6d [ 202.221394][ C0] status: 0000000200000100 badaddr: ff20000000087fe8 cause: 000000000000000f [ 202.222413][ C0] Kernel panic - not syncing: Kernel stack overflow [ 202.223434][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 202.224308][ C0] Hardware name: riscv-virtio,qemu (DT) [ 202.225784][ C0] Call Trace: [ 202.226478][ C0] [] dump_backtrace+0x2e/0x3c [ 202.227283][ C0] [] show_stack+0x34/0x40 [ 202.227961][ C0] [] dump_stack_lvl+0x108/0x196 [ 202.228771][ C0] [] dump_stack+0x1c/0x24 [ 202.229547][ C0] [] panic+0x388/0x806 [ 202.230234][ C0] [] handle_bad_stack+0xe4/0x10c [ 202.230979][ C0] [] check_irq_usage+0x1d6/0x1466 [ 202.231978][ C0] SMP: stopping secondary CPUs [ 202.233660][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:15:06 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff85ec4ffe mhartid 0000000000000000 mstatus 0000000a00000180 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f0b509 hedeleg 0000000000000000 mtvec 0000000080000428 stvec ffffffff85f5b9a0 vstvec 0000000000000000 mepc ffffffff8022ccb8 sepc ffffffff80226be4 vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000087fe8 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a01230000009d21d x0/zero 0000000000000000 x1/ra ffffffff85ec5412 x2/sp ff6000006ec702e0 x3/gp ffffffff8954c0a0 x4/tp ff60000011ee4ec0 x5/t0 ff6000006ec70643 x6/t1 0000000000000043 x7/t2 2065726177647261 x8/s0 ff6000006ec70400 x9/s1 ffffffff864481c4 x10/a0 ff6000006ec70645 x11/a1 0000000000000020 x12/a2 0000000000000004 x13/a3 ffffffff85ebc400 x14/a4 0000000000000006 x15/a5 0000000000000000 x16/a6 0000000000ff0100 x17/a7 ff6000006ec705a7 x18/s2 000000000000005d x19/s3 ffffffff864481c4 x20/s4 ff6000006ec70645 x21/s5 ff6000006ec704b8 x22/s6 ff6000006ec70380 x23/s7 ff600000eec7063d x24/s8 ffffffff87310244 x25/s9 0000000000000004 x26/s10 000000007fffffff x27/s11 0000000000000007 x28/t3 ff6000006ec70643 x29/t4 ff6000006ec70643 x30/t5 ffebffff0dd8e0b5 x31/t6 ff6000006ec7063f 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 ffffffff80240204 mhartid 0000000000000001 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 0000000080027000 sscratch 0000000000000000 satp a011f0000009734a x0/zero 0000000000000000 x1/ra ffffffff8024019c x2/sp ff2000000000bc00 x3/gp ffffffff8954c0a0 x4/tp ff6000001ad94ec0 x5/t0 1fec0000035b2b3b x6/t1 ffebffff038a6348 x7/t2 ff6000001ad959e0 x8/s0 ff2000000000bc60 x9/s1 ff6000001c531a40 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff8024019c x14/a4 0000000000000000 x15/a5 000000000281027f x16/a6 ffebffff038a6349 x17/a7 ff6000001c531a43 x18/s2 ffebffff038a6348 x19/s3 ff6000001c531a50 x20/s4 0000000000000000 x21/s5 ff6000001c531a48 x22/s6 1fec0000038a634a x23/s7 0000000000000003 x24/s8 1fec0000038a6349 x25/s9 0000000000000280 x26/s10 1fec0000038a6348 x27/s11 ff6000006ec967d0 x28/t3 ffffffff86257484 x29/t4 ffebffff038a6348 x30/t5 ffebffff038a6349 x31/t6 1fec0000035b2b40 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