CPU: 0 PID: 5976 Comm: syz-fuzzer Not tainted 4.20.0-rc1+ #141
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-...!: (192 ticks this GP) idle=b02/1/0x4000000000000004 softirq=11602/11604 fqs=13 
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
rcu: 	 (t=10582 jiffies g=12885 q=8)
rcu: rcu_preempt kthread starved for 8758 jiffies! g12885 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    22696    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
 schedule+0xfe/0x460 kernel/sched/core.c:3516
 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:4395
 __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
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 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
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 1
 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:804
 </IRQ>
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data+0xd/0x70 kernel/kcov.c:121
Code: e8 68 4e 43 00 e9 6f fc ff ff e8 6e 66 c9 ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 <65> 8b 05 7c 63 82 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 83
RSP: 0000:ffff8801b429dff0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81b01c7d
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8801b429dff0 R08: ffff8801b43da580 R09: ffffed003b5c5b67
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: 1ffff10036853c03
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff
 __sanitizer_cov_trace_const_cmp1+0x1a/0x20 kernel/kcov.c:174
 rcu_read_unlock include/linux/rcupdate.h:657 [inline]
 list_lru_count_one+0x36d/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+0x1b1/0xd30 mm/vmscan.c:465
 shrink_slab+0x389/0x8c0 mm/vmscan.c:706
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa14/0x2e10 mm/page_alloc.c:4196
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 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:1139
RIP: 0033:0x40f9c0
Code: Bad RIP value.
RSP: 002b:000000c42001fef8 EFLAGS: 00010216
RAX: ffffffffffffff92 RBX: 000000003b97f88d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001ff20 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001fed8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000c4211edf20 R14: 0000000000000001 R15: 0000000000000000
CPU: 1 PID: 8936 Comm: syz-executor2 Not tainted 4.20.0-rc1+ #141
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:51741 inactive_anon:192 isolated_anon:0
 active_file:28 inactive_file:10 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9067 slab_unreclaimable:1456207
 mapped:49154 shmem:243 pagetables:679 bounce:0
 free:13684 free_pcp:150 free_cma:0
Call Trace:
Node 0 active_anon:206964kB inactive_anon:768kB active_file:112kB inactive_file:40kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:972kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
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 2818 6321 6321
Node 0 DMA32 free:24848kB min:30052kB low:37564kB high:45076kB active_anon:8192kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888772kB 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:13980kB min:37364kB low:46704kB high:56044kB active_anon:198772kB inactive_anon:768kB active_file:68kB inactive_file:40kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:6784kB pagetables:2716kB bounce:0kB free_pcp:352kB local_pcp:136kB free_cma:0kB
 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101
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) 3*4096kB (M) = 15908kB
 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62
Node 0 DMA32: 4*4kB (UM) 2*8kB (UM) 3*16kB (M) 2*32kB (M) 4*64kB (UM) 5*128kB (UM) 3*256kB (M) 3*512kB (M) 3*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24848kB
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
Node 0 Normal: 953*4kB (UMEH) 455*8kB (UME) 176*16kB (UME) 68*32kB (UME) 2*64kB (UH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13980kB
 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline]
 rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 print_cpu_stall.cold.67+0x1f3/0x3c7 kernel/rcu/tree.c:1334
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
281 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
342854 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=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
 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
 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:804
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: 3f 7e 0f 85 32 ff ff ff e8 e5 1c 3e ff e9 28 ff ff ff e8 4c 52 c3 ff 48 83 3d 64 9b 8f 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 52 6a
RSP: 0000:ffff8801daf07450 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff100326d91f1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8801daf074c0 R08: ffff8801936c8f88 R09: 0000000000000002
R10: 0000000000000000 R11: ffff8801936c86c0 R12: ffff8801d9bee600
R13: ffff8801d9bee600 R14: 0000000000000000 R15: 0000000000000286
 __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:804
 </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 36 fd 3d ff e9 c5 fe ff ff e8 9d 32 c3 ff 48 83 3d b5 7b 8f 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 52 6a
RSP: 0000:ffff8801926c7738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801936c8f40 RDI: 0000000000000286
RBP: ffff8801926c77a0 R08: ffff8801936c86c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bee600 R14: ffff8801d9bee600 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+0x1ad/0x1000
CPU: 0 PID: 5976 Comm: syz-fuzzer Not tainted 4.20.0-rc1+ #141
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-executor2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
syz-executor2 cpuset=syz2 mems_allowed=0
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 __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:804
 </IRQ>
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data+0xd/0x70 kernel/kcov.c:121
Code: e8 68 4e 43 00 e9 6f fc ff ff e8 6e 66 c9 ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 <65> 8b 05 7c 63 82 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 83
RSP: 0000:ffff8801b429dff0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81b01c7d
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8801b429dff0 R08: ffff8801b43da580 R09: ffffed003b5c5b67
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: 1ffff10036853c03
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff
 __sanitizer_cov_trace_const_cmp1+0x1a/0x20 kernel/kcov.c:174
 rcu_read_unlock include/linux/rcupdate.h:657 [inline]
 list_lru_count_one+0x36d/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+0x1b1/0xd30 mm/vmscan.c:465
 shrink_slab+0x389/0x8c0 mm/vmscan.c:706
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa14/0x2e10 mm/page_alloc.c:4196
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 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:1139
RIP: 0033:0x40f9c0
Code: Bad RIP value.
RSP: 002b:000000c42001fef8 EFLAGS: 00010216
RAX: ffffffffffffff92 RBX: 000000003b97f88d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001ff20 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001fed8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000c4211edf20 R14: 0000000000000001 R15: 0000000000000000
CPU: 1 PID: 8936 Comm: syz-executor2 Not tainted 4.20.0-rc1+ #141
Mem-Info:
active_anon:51741 inactive_anon:192 isolated_anon:0
 active_file:28 inactive_file:10 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9067 slab_unreclaimable:1456207
 mapped:49154 shmem:243 pagetables:679 bounce:0
 free:13684 free_pcp:150 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:206964kB inactive_anon:768kB active_file:112kB inactive_file:40kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:972kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB 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
 <IRQ>
lowmem_reserve[]: 0 2818 6321 6321
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:24848kB min:30052kB low:37564kB high:45076kB active_anon:8192kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888772kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
Node 0 Normal free:13980kB min:37364kB low:46704kB high:56044kB active_anon:198772kB inactive_anon:768kB active_file:68kB inactive_file:40kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:6784kB pagetables:2716kB bounce:0kB free_pcp:352kB local_pcp:136kB 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) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 2*8kB (UM) 3*16kB (M) 2*32kB (M) 4*64kB (UM) 5*128kB (UM) 3*256kB (M) 3*512kB (M) 3*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24848kB
Node 0 Normal: 953*4kB (UMEH) 455*8kB (UME) 176*16kB (UME) 68*32kB (UME) 2*64kB (UH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13980kB
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
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
281 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
342854 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 __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:804
 </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 36 fd 3d ff e9 c5 fe ff ff e8 9d 32 c3 ff 48 83 3d b5 7b 8f 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 52 6a
RSP: 0000:ffff8801926c7738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801936c8f40 RDI: 0000000000000286
RBP: ffff8801926c77a0 R08: ffff8801936c86c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bee600 R14: ffff8801d9bee600 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+0x1ad/0x1000
CPU: 0 PID: 5976 Comm: syz-fuzzer Not tainted 4.20.0-rc1+ #141
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-executor2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 <IRQ>
syz-executor2 cpuset=syz2 mems_allowed=0
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 __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:804
 </IRQ>
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data+0xd/0x70 kernel/kcov.c:121
Code: e8 68 4e 43 00 e9 6f fc ff ff e8 6e 66 c9 ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 <65> 8b 05 7c 63 82 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 83
RSP: 0000:ffff8801b429dff0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81b01c7d
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8801b429dff0 R08: ffff8801b43da580 R09: ffffed003b5c5b67
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: 1ffff10036853c03
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff
 __sanitizer_cov_trace_const_cmp1+0x1a/0x20 kernel/kcov.c:174
 rcu_read_unlock include/linux/rcupdate.h:657 [inline]
 list_lru_count_one+0x36d/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+0x1b1/0xd30 mm/vmscan.c:465
 shrink_slab+0x389/0x8c0 mm/vmscan.c:706
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa14/0x2e10 mm/page_alloc.c:4196
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 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:1139
RIP: 0033:0x40f9c0
Code: Bad RIP value.
RSP: 002b:000000c42001fef8 EFLAGS: 00010216
RAX: ffffffffffffff92 RBX: 000000003b97f88d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001ff20 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001fed8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000c4211edf20 R14: 0000000000000001 R15: 0000000000000000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 1 PID: 8936 Comm: syz-executor2 Not tainted 4.20.0-rc1+ #141
Mem-Info:
active_anon:51741 inactive_anon:192 isolated_anon:0
 active_file:28 inactive_file:10 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9067 slab_unreclaimable:1456207
 mapped:49154 shmem:243 pagetables:679 bounce:0
 free:13684 free_pcp:150 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:206964kB inactive_anon:768kB active_file:112kB inactive_file:40kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:972kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
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 2818 6321 6321
Node 0 DMA32 free:24848kB min:30052kB low:37564kB high:45076kB active_anon:8192kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888772kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13980kB min:37364kB low:46704kB high:56044kB active_anon:198772kB inactive_anon:768kB active_file:68kB inactive_file:40kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:6784kB pagetables:2716kB bounce:0kB free_pcp:352kB local_pcp:136kB 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) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 2*8kB (UM) 3*16kB (M) 2*32kB (M) 4*64kB (UM) 5*128kB (UM) 3*256kB (M) 3*512kB (M) 3*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24848kB
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
Node 0 Normal: 953*4kB (UMEH) 455*8kB (UME) 176*16kB (UME) 68*32kB (UME) 2*64kB (UH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13980kB
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
281 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
342854 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 __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:804
 </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 36 fd 3d ff e9 c5 fe ff ff e8 9d 32 c3 ff 48 83 3d b5 7b 8f 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 52 6a
RSP: 0000:ffff8801926c7738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801936c8f40 RDI: 0000000000000286
RBP: ffff8801926c77a0 R08: ffff8801936c86c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bee600 R14: ffff8801d9bee600 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+0x1ad/0x1000
CPU: 0 PID: 5976 Comm: syz-fuzzer Not tainted 4.20.0-rc1+ #141
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-executor2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
syz-executor2 cpuset=syz2 mems_allowed=0
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 __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:804
 </IRQ>
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data+0xd/0x70 kernel/kcov.c:121
Code: e8 68 4e 43 00 e9 6f fc ff ff e8 6e 66 c9 ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 <65> 8b 05 7c 63 82 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 83
RSP: 0000:ffff8801b429dff0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81b01c7d
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8801b429dff0 R08: ffff8801b43da580 R09: ffffed003b5c5b67
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: 1ffff10036853c03
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffffffffffff
 __sanitizer_cov_trace_const_cmp1+0x1a/0x20 kernel/kcov.c:174
 rcu_read_unlock include/linux/rcupdate.h:657 [inline]
 list_lru_count_one+0x36d/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+0x1b1/0xd30 mm/vmscan.c:465
 shrink_slab+0x389/0x8c0 mm/vmscan.c:706
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa14/0x2e10 mm/page_alloc.c:4196
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 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:1139
RIP: 0033:0x40f9c0
Code: Bad RIP value.
RSP: 002b:000000c42001fef8 EFLAGS: 00010216
RAX: ffffffffffffff92 RBX: 000000003b97f88d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014ecf00
RBP: 000000c42001ff20 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001fed8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000c4211edf20 R14: 0000000000000001 R15: 0000000000000000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 1 PID: 8936 Comm: syz-executor2 Not tainted 4.20.0-rc1+ #141
Mem-Info:
active_anon:51741 inactive_anon:192 isolated_anon:0
 active_file:28 inactive_file:10 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9067 slab_unreclaimable:1456207
 mapped:49154 shmem:243 pagetables:679 bounce:0
 free:13684 free_pcp:150 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:206964kB inactive_anon:768kB active_file:112kB inactive_file:40kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:972kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 157696kB 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
 <IRQ>
lowmem_reserve[]: 0 2818 6321 6321
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:24848kB min:30052kB low:37564kB high:45076kB active_anon:8192kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888772kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
Node 0 Normal free:13980kB min:37364kB low:46704kB high:56044kB active_anon:198772kB inactive_anon:768kB active_file:68kB inactive_file:40kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:6784kB pagetables:2716kB bounce:0kB free_pcp:352kB local_pcp:136kB 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) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 2*8kB (UM) 3*16kB (M) 2*32kB (M) 4*64kB (UM) 5*128kB (UM) 3*256kB (M) 3*512kB (M) 3*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24848kB
Node 0 Normal: 953*4kB (UMEH) 455*8kB (UME) 176*16kB (UME) 68*32kB (UME) 2*64kB (UH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13980kB
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4302
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
281 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
342854 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
 __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