INFO: rcu detected stall in kswapd

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
android-49	INFO: rcu detected stall in kswapd	C			10	1643d	1835d	0/3	public: reported C repro on 2019/04/14 08:51
CPU: 0 PID: 1391 Comm: kswapd0 Not tainted 4.19.0+ #135
rcu: INFO: rcu_preempt self-detected stall on CPU
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
rcu: 	1-...!: (77 ticks this GP) idle=e3a/1/0x4000000000000004 softirq=10700/10700 fqs=1 
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426
rcu: 	
 (t=10623 jiffies g=10993 q=10)
 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297
rcu: rcu_preempt kthread starved for 10507 jiffies! g10993 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R
  running task    
22696    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2826 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3474
 schedule+0xfe/0x460 kernel/sched/core.c:3518
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 __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]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 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
 kthread+0x35a/0x420 kernel/kthread.c:246
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
NMI backtrace for cpu 1
 __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
 </IRQ>
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:672 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:677 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x300/0x660 kernel/smp.c:302
Code: 48 c1 e8 03 4c 01 f0 c6 00 f8 48 89 44 24 28 e8 36 6e 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 10 6d 0c 00 <f3> 90 48 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 30 84 c0 74
RSP: 0000:ffff8801d4a0c960 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d4a64000 RBX: ffff8801d4a0c9d8 RCX: ffffffff8171b511
RDX: 0000000000000000 RSI: ffffffff8171b4c0 RDI: 0000000000000005
RBP: ffff8801d4a0cab0 R08: ffff8801d4a64000 R09: ffffed003b5e5b70
R10: ffffed003b5e5b70 R11: ffff8801daf2db87 R12: ffffed003a941948
R13: 1ffff1003a941934 R14: dffffc0000000000 R15: 0000000000000001
 smp_call_function_many+0x960/0xb60 kernel/smp.c:434
 on_each_cpu_mask+0x41/0x240 kernel/smp.c:634
 on_each_cpu_cond_mask+0x188/0x230 kernel/smp.c:686
 native_flush_tlb_others+0x2ea/0x690 arch/x86/mm/tlb.c:653
 flush_tlb_others arch/x86/include/asm/paravirt.h:63 [inline]
 arch_tlbbatch_flush+0x26f/0x380 arch/x86/mm/tlb.c:765
 try_to_unmap_flush+0x71/0xf0 mm/rmap.c:588
 shrink_page_list+0x6dbb/0xccd0 mm/vmscan.c:1490
 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1953
 shrink_list mm/vmscan.c:2264 [inline]
 shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2527
 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2742
 kswapd_shrink_node mm/vmscan.c:3467 [inline]
 balance_pgdat+0x7ca/0x1000 mm/vmscan.c:3577
 kswapd+0x857/0x12d0 mm/vmscan.c:3799
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 1 PID: 7795 Comm: syz-executor5 Not tainted 4.19.0+ #135
Mem-Info:
active_anon:49834 inactive_anon:131 isolated_anon:0
 active_file:171 inactive_file:168 isolated_file:1
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8792 slab_unreclaimable:1473463
 mapped:49402 shmem:138 pagetables:630 bounce:0
 free:13620 free_pcp:511 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:199336kB inactive_anon:524kB active_file:684kB inactive_file:672kB unevictable:0kB isolated(anon):0kB isolated(file):4kB mapped:197608kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 184320kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Call Trace:
Node 0 
 <IRQ>
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 2818
 6321
 6321
 nmi_cpu_backtrace.cold.1+0x5c/0xa1 lib/nmi_backtrace.c:101
Node 0 
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62
DMA32 free:24820kB min:30052kB low:37564kB high:45076kB active_anon:4128kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888720kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
lowmem_reserve[]:
 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline]
 rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195
 0
 print_cpu_stall.cold.67+0x1f3/0x3c7 kernel/rcu/tree.c:1334
 0
 3503
 3503
Node 0 
Normal free:13752kB min:37364kB low:46704kB high:56044kB active_anon:195208kB inactive_anon:524kB active_file:684kB inactive_file:672kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2520kB bounce:0kB free_pcp:1796kB local_pcp:856kB free_cma:0kB
lowmem_reserve[]:
 0
 0
 0
 0
Node 0 
 check_cpu_stall kernel/rcu/tree.c:1408 [inline]
 rcu_pending kernel/rcu/tree.c:2961 [inline]
 rcu_check_callbacks+0xf3b/0x13f0 kernel/rcu/tree.c:2506
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) 
3*4096kB 
(M) 
= 15908kB
Node 0 
DMA32: 1*4kB 
(E) 
2*8kB 
(UE) 
2*16kB 
(ME) 
2*32kB 
(ME) 
4*64kB 
(ME) 
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
5*128kB 
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
(ME) 
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
5*256kB 
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
(UME) 
4*512kB 
(ME) 
4*1024kB 
(UME) 4*2048kB 
(UME) 
2*4096kB 
(M) 
= 24820kB
Node 0 
Normal: 
554*4kB 
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
(UME) 
 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
326*8kB 
(UME) 
184*16kB 
(UME) 
113*32kB 
(UME) 
37*64kB 
(UM) 
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
0*128kB 
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
0*256kB 
Code: 41 7e 0f 85 32 ff ff ff e8 55 f9 3f ff e9 28 ff ff ff e8 ac c3 c3 ff 48 83 3d 04 72 91 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 1a 90
0*512kB 
RSP: 0000:ffff8801daf07450 EFLAGS: 00000286
0*1024kB 
 ORIG_RAX: ffffffffffffff13
0*2048kB 
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff100378821f9
0*4096kB 
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286
= 13752kB
RBP: ffff8801daf074c0 R08: ffff8801bc410fc8 R09: 0000000000000002
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
R10: 0000000000000000 R11: ffff8801bc410700 R12: ffff8801d9bd2680
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
R13: ffff8801d9bd2680 R14: 0000000000000000 R15: 0000000000000286
477 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342867 pages reserved
0 pages cma reserved
aoe: skb alloc failure
kswapd0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
kswapd0 cpuset=
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
/
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 mems_allowed=0
 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
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 b6 d9 3f ff e9 c5 fe ff ff e8 0d a4 c3 ff 48 83 3d 65 52 91 07 00 0f 84 41 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 1a 90
RSP: 0000:ffff88019722f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801bc410f80 RDI: 0000000000000286
RBP: ffff88019722f7a8 R08: ffff8801bc410700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bd2680 R14: ffff8801d9bd2680 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0xcde/0x1000
CPU: 0 PID: 1391 Comm: kswapd0 Not tainted 4.19.0+ #135
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-executor5: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 <IRQ>
syz-executor5 cpuset=
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz5
 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
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 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
 </IRQ>
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:672 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:677 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x300/0x660 kernel/smp.c:302
Code: 48 c1 e8 03 4c 01 f0 c6 00 f8 48 89 44 24 28 e8 36 6e 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 10 6d 0c 00 <f3> 90 48 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 30 84 c0 74
RSP: 0000:ffff8801d4a0c960 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d4a64000 RBX: ffff8801d4a0c9d8 RCX: ffffffff8171b511
RDX: 0000000000000000 RSI: ffffffff8171b4c0 RDI: 0000000000000005
RBP: ffff8801d4a0cab0 R08: ffff8801d4a64000 R09: ffffed003b5e5b70
R10: ffffed003b5e5b70 R11: ffff8801daf2db87 R12: ffffed003a941948
R13: 1ffff1003a941934 R14: dffffc0000000000 R15: 0000000000000001
 smp_call_function_many+0x960/0xb60 kernel/smp.c:434
 on_each_cpu_mask+0x41/0x240 kernel/smp.c:634
 on_each_cpu_cond_mask+0x188/0x230 kernel/smp.c:686
 native_flush_tlb_others+0x2ea/0x690 arch/x86/mm/tlb.c:653
 flush_tlb_others arch/x86/include/asm/paravirt.h:63 [inline]
 arch_tlbbatch_flush+0x26f/0x380 arch/x86/mm/tlb.c:765
 try_to_unmap_flush+0x71/0xf0 mm/rmap.c:588
 shrink_page_list+0x6dbb/0xccd0 mm/vmscan.c:1490
 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1953
 shrink_list mm/vmscan.c:2264 [inline]
 shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2527
 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2742
 kswapd_shrink_node mm/vmscan.c:3467 [inline]
 balance_pgdat+0x7ca/0x1000 mm/vmscan.c:3577
 kswapd+0x857/0x12d0 mm/vmscan.c:3799
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
CPU: 1 PID: 7795 Comm: syz-executor5 Not tainted 4.19.0+ #135
Mem-Info:
active_anon:49834 inactive_anon:131 isolated_anon:0
 active_file:171 inactive_file:168 isolated_file:1
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8792 slab_unreclaimable:1473463
 mapped:49402 shmem:138 pagetables:630 bounce:0
 free:13620 free_pcp:511 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:199336kB inactive_anon:524kB active_file:684kB inactive_file:672kB unevictable:0kB isolated(anon):0kB isolated(file):4kB mapped:197608kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 184320kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
 <IRQ>
Node 0 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
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 2818
 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426
 6321
 6321
Node 0 
DMA32 free:24820kB min:30052kB low:37564kB high:45076kB active_anon:4128kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888720kB 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:13752kB min:37364kB low:46704kB high:56044kB active_anon:195208kB inactive_anon:524kB active_file:684kB inactive_file:672kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2520kB bounce:0kB free_pcp:1796kB local_pcp:856kB 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) 
= 15908kB
 __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
Node 0 
DMA32: 
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
1*4kB 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
(E) 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
2*8kB 
(UE) 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
2*16kB 
(ME) 
2*32kB 
(ME) 
4*64kB 
(ME) 
5*128kB 
(ME) 
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
5*256kB 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
(UME) 
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
4*512kB (ME) 
4*1024kB 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
(UME) 
4*2048kB 
(UME) 
2*4096kB (M) 
= 24820kB
Node 0 
Normal: 
554*4kB 
(UME) 
326*8kB 
(UME) 
184*16kB 
(UME) 
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
113*32kB 
(UME) 
37*64kB 
(UM) 
0*128kB 
0*256kB 
0*512kB 
0*1024kB 
0*2048kB 
0*4096kB 
= 13752kB
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
477 total pagecache pages
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342867 pages reserved
0 pages cma reserved
aoe: skb alloc failure
kswapd0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kswapd0 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
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 b6 d9 3f ff e9 c5 fe ff ff e8 0d a4 c3 ff 48 83 3d 65 52 91 07 00 0f 84 41 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 1a 90
RSP: 0000:ffff88019722f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801bc410f80 RDI: 0000000000000286
RBP: ffff88019722f7a8 R08: ffff8801bc410700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bd2680 R14: ffff8801d9bd2680 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0xcde/0x1000
CPU: 0 PID: 1391 Comm: kswapd0 Not tainted 4.19.0+ #135
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:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz-executor5: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor5 cpuset=
 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426
syz5
 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]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 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
 </IRQ>
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:672 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:677 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x300/0x660 kernel/smp.c:302
Code: 48 c1 e8 03 4c 01 f0 c6 00 f8 48 89 44 24 28 e8 36 6e 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 10 6d 0c 00 <f3> 90 48 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 30 84 c0 74
RSP: 0000:ffff8801d4a0c960 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d4a64000 RBX: ffff8801d4a0c9d8 RCX: ffffffff8171b511
RDX: 0000000000000000 RSI: ffffffff8171b4c0 RDI: 0000000000000005
RBP: ffff8801d4a0cab0 R08: ffff8801d4a64000 R09: ffffed003b5e5b70
R10: ffffed003b5e5b70 R11: ffff8801daf2db87 R12: ffffed003a941948
R13: 1ffff1003a941934 R14: dffffc0000000000 R15: 0000000000000001
 smp_call_function_many+0x960/0xb60 kernel/smp.c:434
 on_each_cpu_mask+0x41/0x240 kernel/smp.c:634
 on_each_cpu_cond_mask+0x188/0x230 kernel/smp.c:686
 native_flush_tlb_others+0x2ea/0x690 arch/x86/mm/tlb.c:653
 flush_tlb_others arch/x86/include/asm/paravirt.h:63 [inline]
 arch_tlbbatch_flush+0x26f/0x380 arch/x86/mm/tlb.c:765
 try_to_unmap_flush+0x71/0xf0 mm/rmap.c:588
 shrink_page_list+0x6dbb/0xccd0 mm/vmscan.c:1490
 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1953
 shrink_list mm/vmscan.c:2264 [inline]
 shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2527
 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2742
 kswapd_shrink_node mm/vmscan.c:3467 [inline]
 balance_pgdat+0x7ca/0x1000 mm/vmscan.c:3577
 kswapd+0x857/0x12d0 mm/vmscan.c:3799
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 1 PID: 7795 Comm: syz-executor5 Not tainted 4.19.0+ #135
Mem-Info:
active_anon:49834 inactive_anon:131 isolated_anon:0
 active_file:171 inactive_file:168 isolated_file:1
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8792 slab_unreclaimable:1473463
 mapped:49402 shmem:138 pagetables:630 bounce:0
 free:13620 free_pcp:511 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:199336kB inactive_anon:524kB active_file:684kB inactive_file:672kB unevictable:0kB isolated(anon):0kB isolated(file):4kB mapped:197608kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 184320kB 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
 <IRQ>
lowmem_reserve[]:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 0 2818
 6321
 6321
 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426
Node 0 
DMA32 free:24820kB min:30052kB low:37564kB high:45076kB active_anon:4128kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888720kB 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:13752kB min:37364kB low:46704kB high:56044kB active_anon:195208kB inactive_anon:524kB active_file:684kB inactive_file:672kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2520kB bounce:0kB free_pcp:1796kB local_pcp:856kB 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+0xa5/0x8c0 mm/slab.c:2677
= 15908kB
Node 0 
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
DMA32: 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
1*4kB 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
(E) 
2*8kB 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
(UE) 
2*16kB 
(ME) 
2*32kB 
(ME) 
4*64kB 
(ME) 
5*128kB 
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
(ME) 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
5*256kB 
(UME) 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
4*512kB 
(ME) 
4*1024kB 
(UME) 
4*2048kB 
(UME) 
2*4096kB 
(M) 
= 24820kB
Node 0 
Normal: 
554*4kB 
(UME) 
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
326*8kB 
(UME) 
184*16kB 
(UME) 
113*32kB 
(UME) 
37*64kB 
(UM) 
0*128kB 
0*256kB 0*512kB 
0*1024kB 
0*2048kB 
0*4096kB 
= 13752kB
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
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
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
477 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
342867 pages reserved
0 pages cma reserved
aoe: skb alloc failure
kswapd0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
kswapd0 cpuset=
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
/
 mems_allowed=0
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 b6 d9 3f ff e9 c5 fe ff ff e8 0d a4 c3 ff 48 83 3d 65 52 91 07 00 0f 84 41 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 1a 90
RSP: 0000:ffff88019722f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801bc410f80 RDI: 0000000000000286
RBP: ffff88019722f7a8 R08: ffff8801bc410700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bd2680 R14: ffff8801d9bd2680 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0xcde/0x1000
CPU: 0 PID: 1391 Comm: kswapd0 Not tainted 4.19.0+ #135
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:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz-executor5: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor5 cpuset=
 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426
syz5
 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