CPU: 0 PID: 5321 Comm: rsyslogd Not tainted 4.19.0+ #135 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=10517 jiffies, g=9841, q=11) rcu: All QSes seen, last rcu_preempt kthread activity 10517 (4294973186-4294962669), jiffies_till_next_fqs=1, root ->qsmask 0x0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 syz-executor2 R running task warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 20520 7430 5475 0x8010000c Call Trace: sched_show_task.cold.81+0x2b6/0x30a kernel/sched/core.c:5297 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 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 update_process_times+0x2d/0x70 kernel/time/timer.c:1636 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 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: 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 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 RSP: 0018:ffff8801daf07450 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff10038cbc999 __do_softirq+0x308/0xb7e kernel/softirq.c:292 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286 RBP: ffff8801daf074c0 R08: ffff8801c65e4cc8 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8801c65e4400 R12: ffff8801d9a05040 R13: ffff8801d9a05040 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bc3be220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bbc48340 RBX: 1ffffffff12a3e8e RCX: 1ffff10037789186 RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bc3be2c8 R08: ffff8801bbc48c30 R09: 0000000000000006 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 R10: 0000000000000000 R11: ffff8801bbc48340 R12: 1ffff10037877c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000 dump_header+0x27b/0xf72 mm/oom_kill.c:441 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 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 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 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: 0018:ffff8801b763f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801c65e4c80 RDI: 0000000000000286 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 RBP: ffff8801b763f7a8 R08: ffff8801c65e4400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9a05040 R14: ffff8801d9a05040 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] __alloc_pages_slowpath+0x22d4/0x2d70 mm/page_alloc.c:4235 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 ____bpf_clone_redirect net/core/filter.c:2080 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x162/0x1000 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 rcu: rcu_preempt kthread starved for 10517 jiffies! g9841 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 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 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259 __do_fault+0x100/0x6b0 mm/memory.c:2993 schedule+0xfe/0x460 kernel/sched/core.c:3518 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 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934 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 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7fb372d071fd Code: Bad RIP value. RSP: 002b:00007fb3702a6e30 EFLAGS: 00010293 RAX: 0000000000000fe2 RBX: 00000000010f3650 RCX: 00007fb372d071fd RDX: 0000000000000fff RSI: 00007fb371adb5a0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00000000010de260 R09: 0000000000000000 R10: 6b205d3532363930 R11: 0000000000000293 R12: 000000000065e420 R13: 00007fb3702a79c0 R14: 00007fb37334c040 R15: 0000000000000003 warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:49965 inactive_anon:131 isolated_anon:0 active_file:12 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8758 slab_unreclaimable:1472830 mapped:49154 shmem:138 pagetables:629 bounce:0 free:13647 free_pcp:167 free_cma:0 Node 0 active_anon:199860kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB 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 2818 6321 6321 Node 0 DMA32 free:24832kB min:30052kB low:37564kB high:45076kB active_anon:38912kB 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[]: kthread+0x35a/0x420 kernel/kthread.c:246 0 0 3503 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350 3503 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Node 0 syz-executor2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) Normal free:13848kB min:37364kB low:46704kB high:56044kB active_anon:160948kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2516kB bounce:0kB free_pcp:420kB local_pcp:160kB free_cma:0kB syz-executor2 cpuset= lowmem_reserve[]: 0 syz2 0 0 mems_allowed=0 0 CPU: 1 PID: 7430 Comm: syz-executor2 Not tainted 4.19.0+ #135 Node 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 DMA: Call Trace: 1*4kB (U) __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 0*8kB 0*16kB warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 1*32kB (U) 2*64kB (U) 1*128kB __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 4*4kB (M) 0*8kB 3*16kB (UM) 2*32kB (UM) 4*64kB (UM) 5*128kB (UM) __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 3*256kB (M) 3*512kB (M) 3*1024kB (UM) 1*2048kB __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) 4*4096kB (M) fallback_alloc+0x204/0x2e0 mm/slab.c:3219 = 24832kB ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 Node 0 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 Normal: 792*4kB __alloc_skb+0x119/0x770 net/core/skbuff.c:193 (MEH) 463*8kB (UME) 172*16kB (UMEH) 71*32kB (UME) alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 13*64kB ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 (UMH) addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 1*128kB (U) call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 0*256kB 0*512kB 1*1024kB (U) 0*2048kB 0*4096kB = 13880kB 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 163 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 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 0 pages HighMem/MovableOnly 342867 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) rsyslogd cpuset= / mems_allowed=0 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 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: 0018:ffff8801b763f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801c65e4c80 RDI: 0000000000000286 RBP: ffff8801b763f7a8 R08: ffff8801c65e4400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9a05040 R14: ffff8801d9a05040 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+0x162/0x1000 CPU: 0 PID: 5321 Comm: rsyslogd Not tainted 4.19.0+ #135 Mem-Info: active_anon:49965 inactive_anon:131 isolated_anon:0 active_file:12 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8758 slab_unreclaimable:1472830 mapped:49154 shmem:138 pagetables:629 bounce:0 free:13647 free_pcp:167 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:199860kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB 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 2818 6321 6321 Node 0 DMA32 free:24832kB min:30052kB low:37564kB high:45076kB active_anon:38912kB 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:248kB free_cma:0kB lowmem_reserve[]: __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 0 0 3503 3503 Node 0 Normal free:13848kB min:37364kB low:46704kB high:56044kB active_anon:160948kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2516kB bounce:0kB free_pcp:420kB local_pcp:260kB 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 __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 (M) ____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 3*16kB (UM) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 2*32kB (UM) 4*64kB (UM) 5*128kB (UM) 3*256kB (M) 3*512kB alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 (M) ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 3*1024kB addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 (UM) 1*2048kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 (M) 4*4096kB (M) = 24832kB Node 0 Normal: 792*4kB (MEH) 463*8kB (UME) 172*16kB (UMEH) 71*32kB (UME) expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 13*64kB (UMH) 1*128kB (U) 0*256kB 0*512kB 1*1024kB (U) 0*2048kB 0*4096kB = 13880kB 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 163 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 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb syz-executor2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor2 cpuset= syz2 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:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bc3be220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bbc48340 RBX: 1ffffffff12a3e8e RCX: 1ffff10037789186 RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bc3be2c8 R08: ffff8801bbc48c30 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bbc48340 R12: 1ffff10037877c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000 dump_header+0x27b/0xf72 mm/oom_kill.c:441 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] __alloc_pages_slowpath+0x22d4/0x2d70 mm/page_alloc.c:4235 __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:6259 __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: 0033:0x7fb372d071fd Code: Bad RIP value. RSP: 002b:00007fb3702a6e30 EFLAGS: 00010293 RAX: 0000000000000fe2 RBX: 00000000010f3650 RCX: 00007fb372d071fd RDX: 0000000000000fff RSI: 00007fb371adb5a0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00000000010de260 R09: 0000000000000000 R10: 6b205d3532363930 R11: 0000000000000293 R12: 000000000065e420 R13: 00007fb3702a79c0 R14: 00007fb37334c040 R15: 0000000000000003 CPU: 1 PID: 7430 Comm: syz-executor2 Not tainted 4.19.0+ #135 Mem-Info: active_anon:49965 inactive_anon:131 isolated_anon:0 active_file:12 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8758 slab_unreclaimable:1472830 mapped:49154 shmem:138 pagetables:629 bounce:0 free:13647 free_pcp:167 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:199860kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB 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 2818 6321 6321 Node 0 DMA32 free:24832kB min:30052kB low:37564kB high:45076kB active_anon:38912kB 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:13848kB min:37364kB low:46704kB high:56044kB active_anon:160948kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2516kB bounce:0kB free_pcp:420kB 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 (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 4*4kB (M) 0*8kB 3*16kB (UM) 2*32kB (UM) 4*64kB (UM) 5*128kB (UM) 3*256kB (M) 3*512kB (M) 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) = 24832kB Node 0 Normal: 792*4kB (MEH) 463*8kB (UME) 172*16kB (UMEH) 71*32kB (UME) 13*64kB (UMH) 1*128kB (U) 0*256kB 0*512kB 1*1024kB (U) 0*2048kB 0*4096kB = 13880kB 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 163 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 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) rsyslogd cpuset=/ mems_allowed=0 __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: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: 0018:ffff8801b763f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801c65e4c80 RDI: 0000000000000286 RBP: ffff8801b763f7a8 R08: ffff8801c65e4400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9a05040 R14: ffff8801d9a05040 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+0x162/0x1000 CPU: 0 PID: 5321 Comm: rsyslogd 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: __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.117+0xb7/0x1bd mm/page_alloc.c:3426 syz-executor2 cpuset= syz2 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bc3be220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bbc48340 RBX: 1ffffffff12a3e8e RCX: 1ffff10037789186 RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bc3be2c8 R08: ffff8801bbc48c30 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bbc48340 R12: 1ffff10037877c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000 dump_header+0x27b/0xf72 mm/oom_kill.c:441 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] __alloc_pages_slowpath+0x22d4/0x2d70 mm/page_alloc.c:4235 __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:6259 __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: 0033:0x7fb372d071fd Code: Bad RIP value. RSP: 002b:00007fb3702a6e30 EFLAGS: 00010293 RAX: 0000000000000fe2 RBX: 00000000010f3650 RCX: 00007fb372d071fd RDX: 0000000000000fff RSI: 00007fb371adb5a0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00000000010de260 R09: 0000000000000000 R10: 6b205d3532363930 R11: 0000000000000293 R12: 000000000065e420 R13: 00007fb3702a79c0 R14: 00007fb37334c040 R15: 0000000000000003 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 7430 Comm: syz-executor2 Not tainted 4.19.0+ #135 Mem-Info: active_anon:49965 inactive_anon:131 isolated_anon:0 active_file:12 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8758 slab_unreclaimable:1472830 mapped:49154 shmem:138 pagetables:629 bounce:0 free:13647 free_pcp:167 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:199860kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:552kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB 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 2818 6321 6321 Node 0 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 DMA32 free:24832kB min:30052kB low:37564kB high:45076kB active_anon:38912kB 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 0 3503 3503 Node 0 Normal free:13848kB min:37364kB low:46704kB high:56044kB active_anon:160948kB inactive_anon:524kB active_file:48kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5248kB pagetables:2516kB bounce:0kB free_pcp:420kB 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) __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 4*4kB slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 (M) 0*8kB __alloc_skb+0x119/0x770 net/core/skbuff.c:193 3*16kB (UM) 2*32kB (UM) 4*64kB (UM) 5*128kB (UM) alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 3*256kB ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 (M) addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 3*512kB (M) call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 3*1024kB (UM) 1*2048kB (M) 4*4096kB (M) = 24832kB Node 0 Normal: 792*4kB (MEH) 463*8kB (UME) 172*16kB (UMEH) expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 71*32kB (UME) 13*64kB (UMH) 1*128kB (U) 0*256kB 0*512kB 1*1024kB (U) 0*2048kB 0*4096kB = 13880kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 163 total pagecache pages __do_softirq+0x308/0xb7e kernel/softirq.c:292 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 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb rsyslogd: 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 rsyslogd 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 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: 0018:ffff8801b763f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801c65e4c80 RDI: 0000000000000286 RBP: ffff8801b763f7a8 R08: ffff8801c65e4400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9a05040 R14: ffff8801d9a05040 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+0x162/0x1000 CPU: 0 PID: 5321 Comm: rsyslogd 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: __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.117+0xb7/0x1bd mm/page_alloc.c:3426 syz-executor2 cpuset= syz2 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] nlmsg_new include/net/netlink.h:654 [inline] __neigh_notify+0x8c/0x160 net/core/neighbour.c:3011 neigh_update_notify net/core/neighbour.c:2357 [inline] neigh_timer_handler+0x6cb/0xdf0 net/core/neighbour.c:1017 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