CPU: 0 PID: 2898 Comm: kworker/0:2 Not tainted 4.19.0-rc6+ #64 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient neigh_periodic_work rcu: Call Trace: (detected by 1, t=10627 jiffies, g=31725, q=2473) rcu: All QSes seen, last rcu_preempt kthread activity 9950 (4294975389-4294965439), jiffies_till_next_fqs=1, root ->qsmask 0x0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 syz-executor0 R running task 19720 18550 5685 0x8000000c warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 Call Trace: sched_show_task.cold.83+0x2b6/0x30a kernel/sched/core.c:5296 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 print_other_cpu_stall.cold.79+0xa83/0xba5 kernel/rcu/tree.c:1430 check_cpu_stall kernel/rcu/tree.c:1557 [inline] __rcu_pending kernel/rcu/tree.c:3276 [inline] rcu_pending kernel/rcu/tree.c:3319 [inline] rcu_check_callbacks+0xafc/0x1990 kernel/rcu/tree.c:2665 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 update_process_times+0x2d/0x70 kernel/time/timer.c:1636 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 86 90 3e ff e9 c5 fe ff ff e8 ed f3 c2 ff 48 83 3d 3d 05 70 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 22 a5 RSP: 0000:ffff8801daf06ef0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffffff8184e1ca RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 RBP: ffff8801daf06f58 R08: ffff880199a166c0 R09: fffffbfff1281204 R10: ffff8801daf05b38 R11: ffffffff89409023 R12: 0000000000000000 R13: ffff8801d59dcb00 R14: ffff8801d59dcb00 R15: 0000000000480020 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 dst_alloc+0xbb/0x1d0 net/core/dst.c:105 rt_dst_alloc+0x105/0x540 net/ipv4/route.c:1576 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 ip_route_input_slow+0x1d14/0x3ea0 net/ipv4/route.c:2052 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1047 do_softirq.part.13+0x126/0x160 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x21d/0x260 kernel/softirq.c:189 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:275 [inline] _raw_write_unlock_bh+0x30/0x40 kernel/locking/spinlock.c:344 neigh_periodic_work+0x6bd/0xc60 net/core/neighbour.c:852 ip_route_input_rcu+0x10a/0xd80 net/ipv4/route.c:2181 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153 ip_route_input_noref+0x11d/0x260 net/ipv4/route.c:2127 ip_expire+0x556/0x980 net/ipv4/ip_fragment.c:243 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:50576 inactive_anon:5045 isolated_anon:0 active_file:537 inactive_file:285 isolated_file:33 unevictable:0 dirty:7 writeback:0 unstable:0 slab_reclaimable:9541 slab_unreclaimable:1467668 mapped:41140 shmem:5052 pagetables:630 bounce:0 free:13757 free_pcp:841 free_cma:0 Node 0 active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB isolated(anon):0kB isolated(file):132kB mapped:164560kB dirty:28kB writeback:0kB shmem:20208kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 120832kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 lowmem_reserve[]: exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 0 2819 6323 6323 Node 0 DMA32 free:25212kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 3503 3503 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 Node 0 Normal free:13908kB min:37352kB low:46688kB high:56024kB active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5408kB pagetables:2520kB bounce:0kB free_pcp:3116kB local_pcp:1416kB free_cma:0kB RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 lowmem_reserve[]: Code: 7e 0f 85 cf fe ff ff e8 86 90 3e ff e9 c5 fe ff ff e8 ed f3 c2 ff 48 83 3d 3d 05 70 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 22 a5 0 RSP: 0000:ffff88019d787748 EFLAGS: 00000286 0 ORIG_RAX: ffffffffffffff13 0 RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 0 RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 RBP: ffff88019d7877b0 R08: ffff880199a166c0 R09: fffffbfff1281204 Node 0 R10: ffff88019d786390 R11: ffffffff89409023 R12: 0000000000000000 DMA: R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 1*4kB (U) 0*8kB skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 = 15908kB Node 0 bpf_prog_bebbfe2050753572+0x549/0x1000 DMA32: 5*4kB (UM) 1*8kB (U) 2*16kB (M) 2*32kB (M) 4*64kB (M) 4*128kB (UM) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25212kB Node 0 Normal: 1591*4kB (UME) 571*8kB (UME) 140*16kB (UME) 21*32kB (UME) 1*64kB (U) 0*128kB 0*256kB 0*512kB rcu: rcu_preempt kthread starved for 9950 jiffies! g31725 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 0*1024kB rcu: RCU grace-period kthread stack dump: 0*2048kB rcu_preempt R 0*4096kB running task = 13908kB 21984 10 2 0x80000000 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Call Trace: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 5874 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342307 pages reserved 0 pages cma reserved schedule+0xfe/0x460 kernel/sched/core.c:3517 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) kworker/0:2 cpuset= / mems_allowed=0 CPU: 0 PID: 2898 Comm: kworker/0:2 Not tainted 4.19.0-rc6+ #64 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient neigh_periodic_work Call Trace: rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor0 cpuset= syz0 mems_allowed=0 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1047 do_softirq.part.13+0x126/0x160 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x21d/0x260 kernel/softirq.c:189 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:275 [inline] _raw_write_unlock_bh+0x30/0x40 kernel/locking/spinlock.c:344 neigh_periodic_work+0x6bd/0xc60 net/core/neighbour.c:852 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 CPU: 1 PID: 18550 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #64 Mem-Info: active_anon:50576 inactive_anon:5045 isolated_anon:0 active_file:537 inactive_file:285 isolated_file:33 unevictable:0 dirty:7 writeback:0 unstable:0 slab_reclaimable:9541 slab_unreclaimable:1467668 mapped:41140 shmem:5052 pagetables:630 bounce:0 free:13757 free_pcp:841 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB isolated(anon):0kB isolated(file):132kB mapped:164560kB dirty:28kB writeback:0kB shmem:20208kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 120832kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Call Trace: Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 lowmem_reserve[]: 0 2819 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 6323 6323 Node 0 DMA32 free:25212kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:13908kB min:37352kB low:46688kB high:56024kB active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5408kB pagetables:2520kB bounce:0kB free_pcp:3116kB local_pcp:1416kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552 = 15908kB Node 0 dst_alloc+0xbb/0x1d0 net/core/dst.c:105 DMA32: rt_dst_alloc+0x105/0x540 net/ipv4/route.c:1576 5*4kB (UM) 1*8kB (U) ip_route_input_slow+0x1d14/0x3ea0 net/ipv4/route.c:2052 2*16kB (M) 2*32kB (M) 4*64kB (M) 4*128kB (UM) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25212kB Node 0 Normal: 1591*4kB (UME) 571*8kB (UME) ip_route_input_rcu+0x10a/0xd80 net/ipv4/route.c:2181 140*16kB (UME) 21*32kB (UME) 1*64kB (U) 0*128kB 0*256kB ip_route_input_noref+0x11d/0x260 net/ipv4/route.c:2127 0*512kB 0*1024kB 0*2048kB 0*4096kB ip_expire+0x556/0x980 net/ipv4/ip_fragment.c:243 = 13908kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 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 5874 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342307 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) kworker/0:2 cpuset= / expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 mems_allowed=0 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 86 90 3e ff e9 c5 fe ff ff e8 ed f3 c2 ff 48 83 3d 3d 05 70 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 22 a5 RSP: 0000:ffff88019d787748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 RBP: ffff88019d7877b0 R08: ffff880199a166c0 R09: fffffbfff1281204 R10: ffff88019d786390 R11: ffffffff89409023 R12: 0000000000000000 R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 bpf_prog_bebbfe2050753572+0x549/0x1000 CPU: 0 PID: 2898 Comm: kworker/0:2 Not tainted 4.19.0-rc6+ #64 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 syz-executor0 cpuset=syz0 Workqueue: events_power_efficient neigh_periodic_work mems_allowed=0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1047 do_softirq.part.13+0x126/0x160 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x21d/0x260 kernel/softirq.c:189 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:275 [inline] _raw_write_unlock_bh+0x30/0x40 kernel/locking/spinlock.c:344 neigh_periodic_work+0x6bd/0xc60 net/core/neighbour.c:852 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 18550 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #64 Mem-Info: active_anon:50576 inactive_anon:5045 isolated_anon:0 active_file:537 inactive_file:285 isolated_file:33 unevictable:0 dirty:7 writeback:0 unstable:0 slab_reclaimable:9541 slab_unreclaimable:1467668 mapped:41140 shmem:5052 pagetables:630 bounce:0 free:13757 free_pcp:841 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB isolated(anon):0kB isolated(file):132kB mapped:164560kB dirty:28kB writeback:0kB shmem:20208kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 120832kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Call Trace: Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 lowmem_reserve[]: 0 2819 6323 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 6323 Node 0 DMA32 free:25212kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 0 0 3503 3503 Node 0 Normal free:13908kB min:37352kB low:46688kB high:56024kB active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5408kB pagetables:2520kB bounce:0kB free_pcp:3116kB local_pcp:1416kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 = 15908kB Node 0 DMA32: fallback_alloc+0x203/0x2e0 mm/slab.c:3219 5*4kB ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 (UM) __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552 1*8kB (U) dst_alloc+0xbb/0x1d0 net/core/dst.c:105 2*16kB rt_dst_alloc+0x105/0x540 net/ipv4/route.c:1576 (M) 2*32kB (M) 4*64kB ip_route_input_slow+0x1d14/0x3ea0 net/ipv4/route.c:2052 (M) 4*128kB (UM) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25212kB Node 0 Normal: 1591*4kB (UME) 571*8kB (UME) 140*16kB (UME) 21*32kB (UME) 1*64kB (U) ip_route_input_rcu+0x10a/0xd80 net/ipv4/route.c:2181 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13908kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB ip_route_input_noref+0x11d/0x260 net/ipv4/route.c:2127 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 5874 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 ip_expire+0x556/0x980 net/ipv4/ip_fragment.c:243 Free swap = 0kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342307 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) kworker/0:2 cpuset= / mems_allowed=0 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 86 90 3e ff e9 c5 fe ff ff e8 ed f3 c2 ff 48 83 3d 3d 05 70 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 22 a5 RSP: 0000:ffff88019d787748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 RBP: ffff88019d7877b0 R08: ffff880199a166c0 R09: fffffbfff1281204 R10: ffff88019d786390 R11: ffffffff89409023 R12: 0000000000000000 R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 bpf_prog_bebbfe2050753572+0x549/0x1000 CPU: 0 PID: 2898 Comm: kworker/0:2 Not tainted 4.19.0-rc6+ #64 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 syz-executor0 cpuset=syz0 mems_allowed=0 Workqueue: events_power_efficient neigh_periodic_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1047 do_softirq.part.13+0x126/0x160 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x21d/0x260 kernel/softirq.c:189 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:275 [inline] _raw_write_unlock_bh+0x30/0x40 kernel/locking/spinlock.c:344 neigh_periodic_work+0x6bd/0xc60 net/core/neighbour.c:852 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 18550 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #64 Mem-Info: active_anon:50576 inactive_anon:5045 isolated_anon:0 active_file:537 inactive_file:285 isolated_file:33 unevictable:0 dirty:7 writeback:0 unstable:0 slab_reclaimable:9541 slab_unreclaimable:1467668 mapped:41140 shmem:5052 pagetables:630 bounce:0 free:13757 free_pcp:841 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB isolated(anon):0kB isolated(file):132kB mapped:164560kB dirty:28kB writeback:0kB shmem:20208kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 120832kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Call Trace: Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 lowmem_reserve[]: 0 2819 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 6323 6323 Node 0 DMA32 free:25212kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:13908kB min:37352kB low:46688kB high:56024kB active_anon:202304kB inactive_anon:20180kB active_file:2148kB inactive_file:1140kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5408kB pagetables:2520kB bounce:0kB free_pcp:3116kB local_pcp:1416kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 (M) = 15908kB fallback_alloc+0x203/0x2e0 mm/slab.c:3219 Node 0 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 DMA32: __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552 5*4kB (UM) dst_alloc+0xbb/0x1d0 net/core/dst.c:105 1*8kB rt_dst_alloc+0x105/0x540 net/ipv4/route.c:1576 (U) 2*16kB (M) ip_route_input_slow+0x1d14/0x3ea0 net/ipv4/route.c:2052 2*32kB (M) 4*64kB (M) 4*128kB (UM) 3*256kB (M) 4*512kB (UM) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25212kB Node 0 Normal: 1591*4kB (UME) 571*8kB (UME) 140*16kB (UME) 21*32kB ip_route_input_rcu+0x10a/0xd80 net/ipv4/route.c:2181 (UME) 1*64kB (U) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB ip_route_input_noref+0x11d/0x260 net/ipv4/route.c:2127 0*4096kB = 13908kB 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 ip_expire+0x556/0x980 net/ipv4/ip_fragment.c:243 5874 total pagecache pages call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342307 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb kworker/0:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) kworker/0:2 cpuset= / mems_allowed=0 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 86 90 3e ff e9 c5 fe ff ff e8 ed f3 c2 ff 48 83 3d 3d 05 70 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 22 a5 RSP: 0000:ffff88019d787748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 RBP: ffff88019d7877b0 R08: ffff880199a166c0 R09: fffffbfff1281204 R10: ffff88019d786390 R11: ffffffff89409023 R12: 0000000000000000 R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 bpf_prog_bebbfe2050753572+0x549/0x1000 CPU: 0 PID: 2898 Comm: kworker/0:2 Not tainted 4.19.0-rc6+ #64 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 syz-executor0 cpuset=syz0 Workqueue: events_power_efficient neigh_periodic_work mems_allowed=0 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682