last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:37446' (ED25519) to the list of known hosts. syzkaller login: [ 337.383344][ T3169] cgroup: Unknown subsys name 'net' [ 338.343273][ T3169] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 406.335498][ T3169] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 414.440672][ C0] Insufficient stack space to handle exception! [ 414.442324][ C0] Task stack: [0xff20000002c58000..0xff20000002c5c000] [ 414.443676][ C0] Overflow stack: [0xff6000006ec70070..0xff6000006ec71070] [ 414.445711][ C0] CPU: 0 UID: 0 PID: 1967 Comm: kworker/u9:5 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 414.447803][ C0] Hardware name: riscv-virtio,qemu (DT) [ 414.449519][ C0] Workqueue: events_unbound toggle_allocation_gate [ 414.452853][ C0] epc : mark_lock+0x2e/0x1b10 [ 414.454678][ C0] ra : __lock_acquire+0x1364/0x82d8 [ 414.456349][ C0] epc : ffffffff8022cb72 ra : ffffffff80230424 sp : ff1fffffffffff80 [ 414.457869][ C0] gp : ffffffff8954c0a0 tp : 0000000000000000 t0 : 1fec000003054163 [ 414.459491][ C0] t1 : ff600000182a0d28 t2 : ff600000182a0b20 s0 : ff20000000000120 [ 414.461072][ C0] s1 : ffffffff89649840 a0 : ff600000182a0000 a1 : ff600000182a0d28 [ 414.462580][ C0] a2 : 0000000000000002 a3 : 0000000041b58ab3 a4 : 0000000000030000 [ 414.463965][ C0] a5 : ff200000000000b0 a6 : ffffffff8cd1c5a0 a7 : 0000000000000004 [ 414.465370][ C0] s2 : 000000000000000d s3 : 000000000004a01a s4 : ff200000000000a0 [ 414.466988][ C0] s5 : ffffffff8968bf60 s6 : ffffffff89584780 s7 : ff600000182a0b04 [ 414.468505][ C0] s8 : 000000000000001a s9 : 0000000000000001 s10: ffffffff8968bf60 [ 414.469939][ C0] s11: ff600000182a0000 t3 : ffffffff86257484 t4 : 1fec000003054160 [ 414.471400][ C0] t5 : 0000000000000000 t6 : 1fec0000030541a9 [ 414.472589][ C0] status: 0000000200000100 badaddr: ff1fffffffffffc0 cause: 000000000000000f [ 414.474630][ C0] Kernel panic - not syncing: Kernel stack overflow [ 414.476640][ C0] CPU: 0 UID: 0 PID: 1967 Comm: kworker/u9:5 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 [ 414.479526][ C0] Hardware name: riscv-virtio,qemu (DT) [ 414.480928][ C0] Workqueue: events_unbound toggle_allocation_gate [ 414.481938][ C0] Call Trace: [ 414.482592][ C0] [] dump_backtrace+0x2e/0x3c [ 414.483533][ C0] [] show_stack+0x34/0x40 [ 414.484595][ C0] [] dump_stack_lvl+0x108/0x196 [ 414.486076][ C0] [] dump_stack+0x1c/0x24 [ 414.487139][ C0] [] panic+0x388/0x806 [ 414.487913][ C0] [] handle_bad_stack+0xe4/0x10c [ 414.488794][ C0] [] __lock_acquire+0x1364/0x82d8 [ 414.490610][ C0] SMP: stopping secondary CPUs [ 414.493060][ C0] Rebooting in 86400 seconds.. VM DIAGNOSIS: 05:39:19 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 ffffffff8001f472 sepc ffffffff8022cb72 vsepc 0000000000000000 mcause 0000000000000009 scause 000000000000000f vscause 0000000000000000 mtval 0000000000000000 stval ff1fffffffffffc0 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080029000 sscratch 0000000000000000 satp a011f00000098b1c x0/zero 0000000000000000 x1/ra ffffffff85ec4fcc x2/sp ff6000006ec702d0 x3/gp ffffffff8954c0a0 x4/tp ff600000182a0000 x5/t0 552030203a555043 x6/t1 ff6000006ec70400 x7/t2 49552030203a5550 x8/s0 ff6000006ec703f0 x9/s1 ffffffff86448184 x10/a0 ff6000006ec70522 x11/a1 0000000000000000 x12/a2 00000000fffffffb x13/a3 ffffffff85eb44fa x14/a4 0000000000000005 x15/a5 0000000000000000 x16/a6 0000000000ff0100 x17/a7 ff6000006ec705a7 x18/s2 0000000000000000 x19/s3 ffffffff86448184 x20/s4 ff6000006ec70522 x21/s5 ff6000006ec704c8 x22/s6 ff6000006ec70380 x23/s7 ff6000006ec7052c x24/s8 ffffffff87310244 x25/s9 000000000000000f x26/s10 000000000000000c x27/s11 0000000000000007 x28/t3 1fec00000dd8e080 x29/t4 ffebffff0dd8e0b4 x30/t5 ffebffff0dd8e0b5 x31/t6 ff6000006ec7063e 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 ffffffff80007110 sepc ffffffff80240204 vsepc 0000000000000000 mcause 8000000000000003 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080027000 sscratch 0000000000000000 satp a011f00000098b1c x0/zero 0000000000000000 x1/ra ffffffff8024019c x2/sp ff200000000d3a00 x3/gp ffffffff8954c0a0 x4/tp ff60000012290000 x5/t0 1fec000002452163 x6/t1 ffebffff03a1c4d0 x7/t2 ff60000012290b20 x8/s0 ff200000000d3a60 x9/s1 ff6000001d0e2680 x10/a0 0000000000000001 x11/a1 0000000000000004 x12/a2 0000000000000001 x13/a3 ffffffff8024019c x14/a4 0000000000000000 x15/a5 0000000002360234 x16/a6 ffebffff03a1c4d1 x17/a7 ff6000001d0e2683 x18/s2 ffebffff03a1c4d0 x19/s3 ff6000001d0e2690 x20/s4 0000000000000000 x21/s5 ff6000001d0e2688 x22/s6 1fec000003a1c4d2 x23/s7 0000000000000003 x24/s8 1fec000003a1c4d1 x25/s9 0000000000000235 x26/s10 1fec000003a1c4d0 x27/s11 ff6000006ec967d0 x28/t3 ffffffff86257484 x29/t4 ffebffff03a1c4d0 x30/t5 ffebffff03a1c4d1 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