BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 PID: 1494 Comm: syz-executor.1 Not tainted 4.14.231-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 add_chain_cache kernel/locking/lockdep.c:2303 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2415 [inline] validate_chain kernel/locking/lockdep.c:2435 [inline] __lock_acquire.cold+0x19a/0x97c kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 perf_event_context_sched_out kernel/events/core.c:3034 [inline] __perf_event_task_sched_out+0x841/0x11d0 kernel/events/core.c:3126 perf_event_task_sched_out include/linux/perf_event.h:1104 [inline] prepare_task_switch kernel/sched/core.c:2601 [inline] context_switch kernel/sched/core.c:2773 [inline] __schedule+0xc74/0x1de0 kernel/sched/core.c:3384 preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:3611 retint_kernel+0x1b/0x2d RIP: 0010:ip6_dst_hoplimit net/ipv6/output_core.c:137 [inline] RIP: 0010:ip6_dst_hoplimit+0x24d/0x360 net/ipv6/output_core.c:127 RSP: 0018:ffff88822b6a74a8 EFLAGS: 00000a07 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: ffff8881a54ce680 RCX: ffffc9000f9aa000 RDX: 0000000000000000 RSI: ffffffff864b15f1 RDI: ffff8881730078bc RBP: ffff8881730076c0 R08: 0000000000000000 R09: 0000000000020012 R10: ffff88816bd10a00 R11: ffff88816bd10100 R12: 0000000000000000 R13: ffff8880b5159bb0 R14: 00000000000000b0 R15: 00000000ffffffff ip6_xmit+0xd20/0x1f00 net/ipv6/ip6_output.c:282 sctp_v6_xmit+0x36e/0x590 net/sctp/ipv6.c:224 sctp_packet_transmit+0x1c27/0x3000 net/sctp/output.c:637 sctp_outq_flush+0xc59/0x30a0 net/sctp/outqueue.c:1187 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1787 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1179 [inline] sctp_do_sm+0x6b4/0x4c70 net/sctp/sm_sideeffect.c:1150 sctp_primitive_SHUTDOWN+0x9b/0xc0 net/sctp/primitive.c:104 sctp_close+0x35f/0x710 net/sctp/socket.c:1577 inet_release+0xdf/0x1b0 net/ipv4/af_inet.c:425 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:450 __sock_release+0xcd/0x2b0 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1139 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665f9 RSP: 002b:00007feb705fb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffcd927ebaf R14: 00007feb705fb300 R15: 0000000000022000 syz-executor.5: page allocation failure: order:0, mode:0x14000c4(GFP_KERNEL|GFP_DMA32), nodemask=(null) syz-executor.5 cpuset=/ mems_allowed=0-1 CPU: 0 PID: 1579 Comm: syz-executor.5 Not tainted 4.14.231-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 warn_alloc.cold+0x96/0x1cc mm/page_alloc.c:3255 __alloc_pages_slowpath mm/page_alloc.c:4102 [inline] __alloc_pages_nodemask+0x2127/0x2720 mm/page_alloc.c:4205 alloc_pages_current+0x155/0x260 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:520 [inline] alloc_mmu_pages arch/x86/kvm/mmu.c:5173 [inline] kvm_mmu_create+0xda/0x1d0 arch/x86/kvm/mmu.c:5191 kvm_arch_vcpu_init+0x282/0x890 arch/x86/kvm/x86.c:8291 kvm_vcpu_init+0x26d/0x360 arch/x86/kvm/../../../virt/kvm/kvm_main.c:321 vmx_create_vcpu+0xef/0x29d0 arch/x86/kvm/vmx.c:10042 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:2549 [inline] kvm_vm_ioctl+0x4ca/0x13e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3057 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665f9 RSP: 002b:00007fa29952d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000006 RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007ffe2fd8c29f R14: 00007fa29952d300 R15: 0000000000022000 warn_alloc_show_mem: 2 callbacks suppressed Mem-Info: active_anon:1405940 inactive_anon:22144 isolated_anon:0 active_file:347 inactive_file:955 isolated_file:32 unevictable:0 dirty:23 writeback:0 unstable:0 slab_reclaimable:15676 slab_unreclaimable:128334 mapped:56464 shmem:22234 pagetables:25511 bounce:0 free:24391 free_pcp:160 free_cma:0 Node 0 active_anon:2054420kB inactive_anon:59900kB active_file:112kB inactive_file:1932kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:131248kB dirty:20kB writeback:0kB shmem:60256kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 561152kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 1 active_anon:3569340kB inactive_anon:28676kB active_file:1264kB inactive_file:1968kB unevictable:0kB isolated(anon):0kB isolated(file):128kB mapped:94408kB dirty:72kB writeback:0kB shmem:28680kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:10980kB min:204kB low:252kB high:300kB active_anon:4280kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2717 2718 2718 2718 Node 0 DMA32 free:30596kB min:36200kB low:45248kB high:54296kB active_anon:2050140kB inactive_anon:59900kB active_file:112kB inactive_file:1952kB unevictable:0kB writepending:20kB present:3129332kB managed:2788128kB mlocked:0kB kernel_stack:10720kB pagetables:42412kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 Normal free:0kB min:4kB low:4kB high:4kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:516kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:55364kB min:53696kB low:67120kB high:80544kB active_anon:3569340kB inactive_anon:28676kB active_file:1344kB inactive_file:2000kB unevictable:0kB writepending:72kB present:4194304kB managed:4128256kB mlocked:0kB kernel_stack:21056kB pagetables:59628kB bounce:0kB free_pcp:736kB local_pcp:8kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 11*4kB (UME) 9*8kB (UM) 10*16kB (UM) 7*32kB (ME) 4*64kB (ME) 2*128kB (UE) 3*256kB (UME) 2*512kB (UE) 4*1024kB (UME) 2*2048kB (UE) 0*4096kB = 10996kB Node 0 DMA32: 5358*4kB (UME) 328*8kB (UME) 24*16kB (UME) 13*32kB (UME) 0*64kB 20*128kB (UM) 7*256kB (M) 1*512kB (M) 1*1024kB (U) 0*2048kB 0*4096kB = 30744kB Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB Node 1 Normal: 597*4kB (UMEH) 279*8kB (UMEH) 85*16kB (UMEH) 32*32kB (UMH) 14*64kB (UMEH) 6*128kB (UH) 22*256kB (UME) 13*512kB (UM) 12*1024kB (UM) 5*2048kB (UM) 3*4096kB (UM) = 55772kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 23562 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 363849 pages reserved 0 pages cma reserved