CPU: 0 PID: 1 Comm: init Not tainted 4.19.0+ #69 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: rcu: (detected by 1, t=10592 jiffies, g=16465, q=12) __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 rcu: All QSes seen, last rcu_preempt kthread activity 10592 (4294969712-4294959120), jiffies_till_next_fqs=1, root ->qsmask 0x0 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 syz-executor4 R running task 20856 9073 5452 0x8010000c Call Trace: __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 sched_show_task.cold.81+0x2b6/0x30a kernel/sched/core.c:5297 print_other_cpu_stall.cold.66+0x7dd/0x8bb kernel/rcu/tree.c:1286 check_cpu_stall kernel/rcu/tree.c:1415 [inline] rcu_pending kernel/rcu/tree.c:2961 [inline] rcu_check_callbacks+0xfd7/0x13f0 kernel/rcu/tree.c:2506 __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+0xa5/0x8c0 mm/slab.c:2677 fallback_alloc+0x204/0x2e0 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:997 [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:3836 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 update_process_times+0x2d/0x70 kernel/time/timer.c:1636 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642 Code: 40 7e 0f 85 32 ff ff ff e8 55 92 3e ff e9 28 ff ff ff e8 ec c3 c3 ff 48 83 3d c4 0c 70 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 bf fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 82 5c run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 RSP: 0000:ffff8801daf07450 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 __do_softirq+0x308/0xb7e kernel/softirq.c:292 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff100370f1da1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286 RBP: ffff8801daf074c0 R08: ffff8801b878ed08 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8801b878e440 R12: ffff8801d9bcb800 R13: ffff8801d9bcb800 R14: 0000000000000000 R15: 0000000000000286 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 alloc_skb include/linux/skbuff.h:997 [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:3836 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:__read_once_size include/linux/compiler.h:179 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101 Code: 5d c3 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 a8 64 82 7e 81 e2 00 01 1f 00 75 2b 8b 90 d0 12 00 00 <83> fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 00 00 48 8b 11 48 RSP: 0000:ffff8801d9a4e040 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801d9a40040 RBX: 0000000000000001 RCX: ffffffff81afcd8a RDX: 0000000000000000 RSI: ffffffff81afcd93 RDI: 0000000000000005 RBP: ffff8801d9a4e040 R08: ffff8801d9a40040 R09: ffffed003b5c5b57 R10: ffffed003b5c5b57 R11: ffff8801dae2dabb R12: 1ffff1003b349c0b R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 rcu_read_unlock include/linux/rcupdate.h:657 [inline] list_lru_count_one+0x243/0x450 mm/list_lru.c:196 list_lru_shrink_count include/linux/list_lru.h:122 [inline] super_cache_count+0x1b9/0x2e0 fs/super.c:145 do_shrink_slab+0x1a7/0xd20 mm/vmscan.c:464 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 shrink_slab+0x389/0x8c0 mm/vmscan.c:696 __do_softirq+0x308/0xb7e kernel/softirq.c:292 shrink_node+0x431/0x16b0 mm/vmscan.c:2745 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 shrink_zones mm/vmscan.c:2974 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3036 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3251 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661 Code: 3f 7e 0f 85 32 ff ff ff e8 f3 5d 3e ff e9 28 ff ff ff e8 8a 8f c3 ff 48 83 3d 62 d8 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 82 5c __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x9c4/0x2d70 mm/page_alloc.c:4191 RSP: 0000:ffff88019f3ef4a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801b878ecc0 RDI: 0000000000000286 RBP: ffff88019f3ef518 R08: ffff8801b878e440 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800ac0 R13: ffff8801da800ac0 R14: 0000000000000000 R15: 0000000000000286 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.40+0xcc/0xe0 net/core/skbuff.c:145 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5071 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 __bpf_try_make_writable net/core/filter.c:1638 [inline] bpf_try_make_writable net/core/filter.c:1644 [inline] bpf_try_make_head_writable net/core/filter.c:1652 [inline] ____bpf_clone_redirect net/core/filter.c:2089 [inline] bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x160/0x1000 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291 __do_fault+0x100/0x6b0 mm/memory.c:2993 do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 rcu: rcu_preempt kthread starved for 10592 jiffies! g16465 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 22568 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3474 handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 schedule+0xfe/0x460 kernel/sched/core.c:3518 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7f66ad1a8dd3 Code: Bad RIP value. RSP: 002b:00007ffc97c8d1f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffc97c8d3a0 RCX: 00007f66ad1a8dd3 RDX: 0000000000000000 RSI: 00007ffc97c8d550 RDI: 000000000000000b RBP: 00007ffc97c8d550 R08: 00007ffc97c8d5d0 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffc97c8d930 R14: 0000000000000000 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:48230 inactive_anon:1490 isolated_anon:0 active_file:9 inactive_file:16 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8869 slab_unreclaimable:1476971 mapped:49154 shmem:1497 pagetables:620 bounce:0 free:13742 free_pcp:237 free_cma:0 Node 0 active_anon:192920kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:5988kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes 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 lowmem_reserve[]: 0 2820 6323 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090 6323 Node 0 DMA32 free:25232kB min:30060kB low:37572kB high:45084kB active_anon:4096kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890764kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:13828kB min:37352kB low:46688kB high:56024kB active_anon:188824kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5248kB pagetables:2480kB bounce:0kB free_pcp:700kB local_pcp:160kB 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 kthread+0x35a/0x420 kernel/kthread.c:246 1*1024kB (U) 1*2048kB (M) ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350 3*4096kB (M) ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb = 15908kB Node 0 syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) DMA32: syz-executor4 cpuset= 4*4kB syz4 (UM) 0*8kB mems_allowed=0 2*16kB CPU: 1 PID: 9073 Comm: syz-executor4 Not tainted 4.19.0+ #69 (M) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 3*32kB Call Trace: (M) 2*64kB __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 (M) 3*128kB warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 (UM) 4*256kB (M) 4*512kB (UM) __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) = 25232kB Node 0 Normal: 819*4kB (MEH) 379*8kB (UME) 162*16kB (ME) 68*32kB (UMEH) 15*64kB (MH) 0*128kB 3*256kB (U) 2*512kB (U) 0*1024kB 0*2048kB 0*4096kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 = 13828kB 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 1522 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB __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+0xa5/0x8c0 mm/slab.c:2677 Total swap = 0kB 1965979 pages RAM fallback_alloc+0x204/0x2e0 mm/slab.c:3219 0 pages HighMem/MovableOnly ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 342292 pages reserved slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb __alloc_skb+0x119/0x770 net/core/skbuff.c:193 init: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) init cpuset= / mems_allowed=0 alloc_skb include/linux/skbuff.h:997 [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:3836 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+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661 Code: 3f 7e 0f 85 32 ff ff ff e8 f3 5d 3e ff e9 28 ff ff ff e8 8a 8f c3 ff 48 83 3d 62 d8 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 82 5c RSP: 0000:ffff88019f3ef4a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801b878ecc0 RDI: 0000000000000286 RBP: ffff88019f3ef518 R08: ffff8801b878e440 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800ac0 R13: ffff8801da800ac0 R14: 0000000000000000 R15: 0000000000000286 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.40+0xcc/0xe0 net/core/skbuff.c:145 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5071 __bpf_try_make_writable net/core/filter.c:1638 [inline] bpf_try_make_writable net/core/filter.c:1644 [inline] bpf_try_make_head_writable net/core/filter.c:1652 [inline] ____bpf_clone_redirect net/core/filter.c:2089 [inline] bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x160/0x1000 CPU: 0 PID: 1 Comm: init Not tainted 4.19.0+ #69 Mem-Info: active_anon:48230 inactive_anon:1490 isolated_anon:0 active_file:9 inactive_file:16 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8869 slab_unreclaimable:1476971 mapped:49154 shmem:1497 pagetables:620 bounce:0 free:13742 free_pcp:237 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:192920kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:5988kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes 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+0x244/0x39d lib/dump_stack.c:113 lowmem_reserve[]: 0 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 2820 6323 6323 Node 0 DMA32 free:25232kB min:30060kB low:37572kB high:45084kB active_anon:4096kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890764kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:248kB free_cma:0kB __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:13828kB min:37352kB low:46688kB high:56024kB active_anon:188824kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5248kB pagetables:2480kB bounce:0kB free_pcp:700kB local_pcp:540kB 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 1*1024kB (U) 1*2048kB (M) __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 3*4096kB (M) = 15908kB Node 0 DMA32: 4*4kB (UM) 0*8kB 2*16kB (M) 3*32kB __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+0xa5/0x8c0 mm/slab.c:2677 (M) 2*64kB fallback_alloc+0x204/0x2e0 mm/slab.c:3219 (M) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 3*128kB slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 (UM) 4*256kB __alloc_skb+0x119/0x770 net/core/skbuff.c:193 (M) 4*512kB (UM) 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 = 25232kB Node 0 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 Normal: addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 819*4kB (MEH) call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 379*8kB (UME) 162*16kB (ME) 68*32kB (UMEH) 15*64kB (MH) 0*128kB 3*256kB (U) 2*512kB (U) 0*1024kB 0*2048kB expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 0*4096kB = 13828kB 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 1522 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 342292 pages reserved 0 pages cma reserved run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) __do_softirq+0x308/0xb7e kernel/softirq.c:292 syz-executor4 cpuset= syz4 mems_allowed=0 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:__read_once_size include/linux/compiler.h:179 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101 Code: 5d c3 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 a8 64 82 7e 81 e2 00 01 1f 00 75 2b 8b 90 d0 12 00 00 <83> fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 00 00 48 8b 11 48 RSP: 0000:ffff8801d9a4e040 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801d9a40040 RBX: 0000000000000001 RCX: ffffffff81afcd8a RDX: 0000000000000000 RSI: ffffffff81afcd93 RDI: 0000000000000005 RBP: ffff8801d9a4e040 R08: ffff8801d9a40040 R09: ffffed003b5c5b57 R10: ffffed003b5c5b57 R11: ffff8801dae2dabb R12: 1ffff1003b349c0b R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff rcu_read_unlock include/linux/rcupdate.h:657 [inline] list_lru_count_one+0x243/0x450 mm/list_lru.c:196 list_lru_shrink_count include/linux/list_lru.h:122 [inline] super_cache_count+0x1b9/0x2e0 fs/super.c:145 do_shrink_slab+0x1a7/0xd20 mm/vmscan.c:464 shrink_slab+0x389/0x8c0 mm/vmscan.c:696 shrink_node+0x431/0x16b0 mm/vmscan.c:2745 shrink_zones mm/vmscan.c:2974 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3036 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3251 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x9c4/0x2d70 mm/page_alloc.c:4191 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291 __do_fault+0x100/0x6b0 mm/memory.c:2993 do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7f66ad1a8dd3 Code: Bad RIP value. RSP: 002b:00007ffc97c8d1f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffc97c8d3a0 RCX: 00007f66ad1a8dd3 RDX: 0000000000000000 RSI: 00007ffc97c8d550 RDI: 000000000000000b RBP: 00007ffc97c8d550 R08: 00007ffc97c8d5d0 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffc97c8d930 R14: 0000000000000000 R15: 0000000000000000 CPU: 1 PID: 9073 Comm: syz-executor4 Not tainted 4.19.0+ #69 Mem-Info: active_anon:48230 inactive_anon:1490 isolated_anon:0 active_file:9 inactive_file:16 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8869 slab_unreclaimable:1476971 mapped:49154 shmem:1497 pagetables:620 bounce:0 free:13742 free_pcp:237 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:192920kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:5988kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes 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+0x244/0x39d lib/dump_stack.c:113 lowmem_reserve[]: 0 2820 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 6323 6323 Node 0 DMA32 free:25232kB min:30060kB low:37572kB high:45084kB active_anon:4096kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890764kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 0 3503 3503 Node 0 Normal free:13828kB min:37352kB low:46688kB high:56024kB active_anon:188824kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5248kB pagetables:2480kB bounce:0kB free_pcp:700kB local_pcp:160kB 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 1*1024kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: __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+0xa5/0x8c0 mm/slab.c:2677 4*4kB (UM) fallback_alloc+0x204/0x2e0 mm/slab.c:3219 0*8kB ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 2*16kB slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 (M) 3*32kB __alloc_skb+0x119/0x770 net/core/skbuff.c:193 (M) 2*64kB (M) 3*128kB (UM) 4*256kB (M) 4*512kB alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 (UM) ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 3*1024kB (UM) addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 1*2048kB (M) call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 4*4096kB (M) = 25232kB Node 0 Normal: 819*4kB (MEH) 379*8kB (UME) 162*16kB (ME) 68*32kB (UMEH) 15*64kB (MH) expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 0*128kB 3*256kB (U) 2*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13828kB 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 1522 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 Total swap = 0kB 1965979 pages RAM __do_softirq+0x308/0xb7e kernel/softirq.c:292 0 pages HighMem/MovableOnly 342292 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb init: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) init cpuset= / mems_allowed=0 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661 Code: 3f 7e 0f 85 32 ff ff ff e8 f3 5d 3e ff e9 28 ff ff ff e8 8a 8f c3 ff 48 83 3d 62 d8 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 82 5c RSP: 0000:ffff88019f3ef4a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801b878ecc0 RDI: 0000000000000286 RBP: ffff88019f3ef518 R08: ffff8801b878e440 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800ac0 R13: ffff8801da800ac0 R14: 0000000000000000 R15: 0000000000000286 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.40+0xcc/0xe0 net/core/skbuff.c:145 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5071 __bpf_try_make_writable net/core/filter.c:1638 [inline] bpf_try_make_writable net/core/filter.c:1644 [inline] bpf_try_make_head_writable net/core/filter.c:1652 [inline] ____bpf_clone_redirect net/core/filter.c:2089 [inline] bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x160/0x1000 CPU: 0 PID: 1 Comm: init Not tainted 4.19.0+ #69 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 syz-executor4 cpuset= syz4 mems_allowed=0 __alloc_pages_slowpath+0x2660/0x2d70 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+0xa5/0x8c0 mm/slab.c:2677 fallback_alloc+0x204/0x2e0 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:997 [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:3836 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+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:__read_once_size include/linux/compiler.h:179 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101 Code: 5d c3 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 a8 64 82 7e 81 e2 00 01 1f 00 75 2b 8b 90 d0 12 00 00 <83> fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 00 00 48 8b 11 48 RSP: 0000:ffff8801d9a4e040 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801d9a40040 RBX: 0000000000000001 RCX: ffffffff81afcd8a RDX: 0000000000000000 RSI: ffffffff81afcd93 RDI: 0000000000000005 RBP: ffff8801d9a4e040 R08: ffff8801d9a40040 R09: ffffed003b5c5b57 R10: ffffed003b5c5b57 R11: ffff8801dae2dabb R12: 1ffff1003b349c0b R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff rcu_read_unlock include/linux/rcupdate.h:657 [inline] list_lru_count_one+0x243/0x450 mm/list_lru.c:196 list_lru_shrink_count include/linux/list_lru.h:122 [inline] super_cache_count+0x1b9/0x2e0 fs/super.c:145 do_shrink_slab+0x1a7/0xd20 mm/vmscan.c:464 shrink_slab+0x389/0x8c0 mm/vmscan.c:696 shrink_node+0x431/0x16b0 mm/vmscan.c:2745 shrink_zones mm/vmscan.c:2974 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3036 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3251 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x9c4/0x2d70 mm/page_alloc.c:4191 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291 __do_fault+0x100/0x6b0 mm/memory.c:2993 do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7f66ad1a8dd3 Code: Bad RIP value. RSP: 002b:00007ffc97c8d1f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffc97c8d3a0 RCX: 00007f66ad1a8dd3 RDX: 0000000000000000 RSI: 00007ffc97c8d550 RDI: 000000000000000b RBP: 00007ffc97c8d550 R08: 00007ffc97c8d5d0 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffc97c8d930 R14: 0000000000000000 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 9073 Comm: syz-executor4 Not tainted 4.19.0+ #69 Mem-Info: active_anon:48230 inactive_anon:1490 isolated_anon:0 active_file:9 inactive_file:16 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8869 slab_unreclaimable:1476971 mapped:49154 shmem:1497 pagetables:620 bounce:0 free:13742 free_pcp:237 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:192920kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:5988kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes 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+0x244/0x39d lib/dump_stack.c:113 lowmem_reserve[]: 0 2820 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 6323 6323 Node 0 DMA32 free:25232kB min:30060kB low:37572kB high:45084kB active_anon:4096kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890764kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:13828kB min:37352kB low:46688kB high:56024kB active_anon:188824kB inactive_anon:5960kB active_file:36kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5248kB pagetables:2480kB bounce:0kB free_pcp:700kB local_pcp:160kB 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) = 15908kB Node 0 __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+0xa5/0x8c0 mm/slab.c:2677 DMA32: 4*4kB fallback_alloc+0x204/0x2e0 mm/slab.c:3219 (UM) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 0*8kB slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 2*16kB (M) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 3*32kB (M) 2*64kB (M) 3*128kB (UM) 4*256kB (M) 4*512kB (UM) alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 3*1024kB (UM) ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 1*2048kB addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 (M) 4*4096kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 (M) = 25232kB Node 0 Normal: 819*4kB (MEH) 379*8kB (UME) 162*16kB (ME) 68*32kB (UMEH) 15*64kB (MH) 0*128kB expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 3*256kB (U) 2*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13828kB 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 1522 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342292 pages reserved __do_softirq+0x308/0xb7e kernel/softirq.c:292 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb init: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) init cpuset= / mems_allowed=0 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661 Code: 3f 7e 0f 85 32 ff ff ff e8 f3 5d 3e ff e9 28 ff ff ff e8 8a 8f c3 ff 48 83 3d 62 d8 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 82 5c RSP: 0000:ffff88019f3ef4a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801b878ecc0 RDI: 0000000000000286 RBP: ffff88019f3ef518 R08: ffff8801b878e440 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800ac0 R13: ffff8801da800ac0 R14: 0000000000000000 R15: 0000000000000286 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.40+0xcc/0xe0 net/core/skbuff.c:145 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5071 __bpf_try_make_writable net/core/filter.c:1638 [inline] bpf_try_make_writable net/core/filter.c:1644 [inline] bpf_try_make_head_writable net/core/filter.c:1652 [inline] ____bpf_clone_redirect net/core/filter.c:2089 [inline] bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x160/0x1000 CPU: 0 PID: 1 Comm: init Not tainted 4.19.0+ #69 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor4 cpuset= __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 syz4 mems_allowed=0 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2660/0x2d70 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+0xa5/0x8c0 mm/slab.c:2677 fallback_alloc+0x204/0x2e0 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