last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:56479' (ED25519) to the list of known hosts. syzkaller login: [ 412.364367][ T3170] cgroup: Unknown subsys name 'net' [ 413.469379][ T3170] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 483.249282][ T3170] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 493.849063][ C0] Insufficient stack space to handle exception! [ 493.852940][ C0] Task stack: [0xff20000000088000..0xff2000000008c000] [ 493.855906][ C0] Overflow stack: [0xff6000006ec70070..0xff6000006ec71070] [ 493.859037][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 493.861615][ C0] Hardware name: riscv-virtio,qemu (DT) [ 493.869798][ C0] epc : __lock_acquire+0x30/0x82d8 [ 493.874508][ C0] ra : lock_acquire.part.0+0x2c6/0x820 [ 493.876645][ C0] epc : ffffffff8022f0f0 ra : ffffffff802396bc sp : ff20000000087eb0 [ 493.878542][ C0] gp : ffffffff8954c0a0 tp : 0000000000000000 t0 : 0000000000000000 [ 493.880171][ C0] t1 : 0000000000000001 t2 : ff60000011ee59e0 s0 : ff20000000088070 [ 493.881697][ C0] s1 : ff20000000088000 a0 : ff6000006ec8b118 a1 : 0000000000000000 [ 493.883854][ C0] a2 : 0000000000000001 a3 : 0000000000000000 a4 : 0000000000000001 [ 493.885582][ C0] a5 : 0000000000000000 a6 : 0000000000000000 a7 : ffffffff808830c4 [ 493.887230][ C0] s2 : 0000000000000001 s3 : 0000000000000001 s4 : ff6000006ec8b118 [ 493.888875][ C0] s5 : 1fe4000000011018 s6 : 0000000000000000 s7 : ffffffff808830c4 [ 493.890374][ C0] s8 : 0000000000000000 s9 : ffffffff86257708 s10: ffffffff908a1980 [ 493.891805][ C0] s11: 0000000000000002 t3 : ff20000000087fa0 t4 : 0000000041b59000 [ 493.893802][ C0] t5 : 1fe4000000010ff4 t6 : ff20000000088b60 [ 493.895195][ C0] status: 0000000200000100 badaddr: ff20000000087f60 cause: 000000000000000f [ 493.897376][ C0] Kernel panic - not syncing: Kernel stack overflow [ 493.900315][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 493.906804][ C0] Hardware name: riscv-virtio,qemu (DT) [ 493.908005][ C0] Call Trace: [ 493.909002][ C0] [] dump_backtrace+0x2e/0x3c [ 493.910979][ C0] [] show_stack+0x34/0x40 [ 493.912432][ C0] [] dump_stack_lvl+0x108/0x196 [ 493.913925][ C0] [] dump_stack+0x1c/0x24 [ 493.924566][ C0] [] panic+0x388/0x806 [ 493.926320][ C0] [] handle_bad_stack+0xe4/0x10c [ 493.927740][ C0] [] lock_acquire.part.0+0x2c6/0x820 [ 493.929686][ C0] SMP: stopping secondary CPUs [ 493.951132][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 20:42:14 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff80258100 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 ffffffff80007110 sepc ffffffff8022f0f0 vsepc 0000000000000000 mcause 8000000000000003 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff20000000087f60 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a011f0000009de38 x0/zero 0000000000000000 x1/ra ffffffff80258100 x2/sp ff6000006ec70600 x3/gp ffffffff8954c0a0 x4/tp ff60000011ee4ec0 x5/t0 ffffffff87ce3288 x6/t1 fffffffef0fb0e1a x7/t2 0000000000000000 x8/s0 ff6000006ec706e0 x9/s1 dfffffff00000000 x10/a0 ffffffff87cd2620 x11/a1 00000000ffffe306 x12/a2 ff6000006ec707c0 x13/a3 ff6000006ec70640 x14/a4 0000000000000000 x15/a5 ff60000011ee4ec0 x16/a6 fffffffef0fb0e1b x17/a7 ffffffff87d870d7 x18/s2 ffffffff87cd2620 x19/s3 ff6000006ec707c0 x20/s4 0000000000000306 x21/s5 0000000000000000 x22/s6 ff6000006ec70640 x23/s7 00000000ffffe306 x24/s8 ffffffff87cd2648 x25/s9 0000000000000306 x26/s10 ffffffff87cd2620 x27/s11 1fec00000dd8e120 x28/t3 1fec00000dd8e18c x29/t4 fffffffef0fb0e1a x30/t5 fffffffef0fb0e1b x31/t6 ffffffff906e1e7a 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 a011f0000009de38 x0/zero 0000000000000000 x1/ra ffffffff8024019c x2/sp ff200000000d3a00 x3/gp ffffffff8954c0a0 x4/tp ff60000012290000 x5/t0 1fec000002452163 x6/t1 ffebffff02f294d0 x7/t2 ff60000012290b20 x8/s0 ff200000000d3a60 x9/s1 ff6000001794a680 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff8024019c x14/a4 0000000000000000 x15/a5 0000000003490347 x16/a6 ffebffff02f294d1 x17/a7 ff6000001794a683 x18/s2 ffebffff02f294d0 x19/s3 ff6000001794a690 x20/s4 0000000000000000 x21/s5 ff6000001794a688 x22/s6 1fec000002f294d2 x23/s7 0000000000000003 x24/s8 1fec000002f294d1 x25/s9 0000000000000348 x26/s10 1fec000002f294d0 x27/s11 ff6000006ec967d0 x28/t3 ffffffff86257484 x29/t4 ffebffff02f294d0 x30/t5 ffebffff02f294d1 x31/t6 1fec000002452168 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