CPU: 1 PID: 5338 Comm: syz-fuzzer Not tainted 4.19.0-rc2+ #94 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: 0-...!: (1 GPs behind) idle=032/1/0x4000000000000004 softirq=8845/8846 fqs=1 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 rcu: (t=10580 jiffies g=9229 q=13) rcu: rcu_preempt kthread starved for 10513 jiffies! g9229 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 23064 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 kthread+0x35a/0x420 kernel/kthread.c:246 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 NMI backtrace for cpu 0 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:100 Code: c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 8c 1e 83 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 d0 RSP: 0000:ffff8801bb33dc18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bb31e200 RBX: 1ffff10037667b86 RCX: ffffffff81a788ad RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8801bb33dc18 R08: ffff8801bb31e200 R09: ffffed003b5a4732 R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: 0000000000000001 R13: 0000000000000000 R14: 1ffff10037667b92 R15: dead000000000100 rcu_read_unlock include/linux/rcupdate.h:679 [inline] page_evictable+0x36b/0x540 mm/vmscan.c:4150 shrink_active_list+0x845/0x1c20 mm/vmscan.c:2106 shrink_list mm/vmscan.c:2250 [inline] shrink_node_memcg+0x803/0x18e0 mm/vmscan.c:2517 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2732 shrink_zones mm/vmscan.c:2964 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3026 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3241 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x993/0x2d80 mm/page_alloc.c:4191 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38f/0x5b0 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:6257 __do_fault+0x100/0x6b0 mm/memory.c:3240 do_read_fault mm/memory.c:3652 [inline] do_fault mm/memory.c:3752 [inline] handle_pte_fault mm/memory.c:3983 [inline] __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0033:0x45db60 Code: Bad RIP value. RSP: 002b:000000c420057ab8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 000000000045df89 RDX: 000000c420057ac0 RSI: 000000c420057bf0 RDI: 0000000000000011 RBP: 000000c420033e90 R08: 0000000000000003 R09: 000000c420000d80 R10: 00000000ffffffff R11: 0000000000000246 R12: 000000c425e49dd8 R13: 000000000000000f R14: 0000000000b79720 R15: ffffffffffffffff CPU: 0 PID: 7087 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #94 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:41015 inactive_anon:371 isolated_anon:0 active_file:15 inactive_file:16 isolated_file:2 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8542 slab_unreclaimable:1483152 mapped:41147 shmem:379 pagetables:605 bounce:0 free:13788 free_pcp:262 free_cma:0 Call Trace: Node 0 active_anon:164060kB inactive_anon:1484kB active_file:60kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):8kB mapped:164588kB dirty:0kB writeback:0kB shmem:1516kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 153600kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 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 2815 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 6318 6318 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 Node 0 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline] rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340 DMA32 free:25228kB min:30036kB low:37544kB high:45052kB active_anon:2048kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2887244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: print_cpu_stall.cold.78+0x2d3/0x524 kernel/rcu/tree.c:1478 0 0 3503 3503 Node 0 Normal free:14016kB min:37376kB low:46720kB high:56064kB active_anon:162012kB inactive_anon:1484kB active_file:60kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3587472kB mlocked:0kB kernel_stack:5184kB pagetables:2420kB bounce:0kB free_pcp:800kB local_pcp:332kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3276 [inline] rcu_pending kernel/rcu/tree.c:3319 [inline] rcu_check_callbacks+0xfd9/0x1990 kernel/rcu/tree.c:2665 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: 3*4kB (M) 2*8kB (M) 1*16kB (M) update_process_times+0x2d/0x70 kernel/time/timer.c:1636 1*32kB tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 (M) tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 3*64kB __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 (UM) 3*128kB (M) 2*256kB (M) 3*512kB (M) 4*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 = 25228kB local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 Node 0 Normal: 866*4kB (ME) 469*8kB (UME) 197*16kB (UME) apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 59*32kB RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642 (UME) Code: 40 7e 0f 85 32 ff ff ff e8 15 d6 3e ff e9 28 ff ff ff e8 2c 33 c3 ff 48 83 3d cc 81 b0 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 b2 73 18*64kB RSP: 0000:ffff8801dac07450 EFLAGS: 00000282 (ME) ORIG_RAX: ffffffffffffff13 3*128kB (M) RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff100347c8df1 1*256kB RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000282 (U) RBP: ffff8801dac074c0 R08: ffff8801a3e46f88 R09: 0000000000000002 0*512kB R10: 0000000000000000 R11: ffff8801a3e466c0 R12: ffff8801d9be7680 0*1024kB R13: ffff8801d9be7680 R14: 0000000000000000 R15: 0000000000000282 0*2048kB 0*4096kB = 14048kB __alloc_skb+0x119/0x770 net/core/skbuff.c:193 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 412 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 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 343323 pages reserved ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 0 pages cma reserved addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-fuzzer cpuset= / mems_allowed=0 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 76 b6 3e ff e9 c5 fe ff ff e8 8d 13 c3 ff 48 83 3d 2d 62 b0 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 b2 73 RSP: 0000:ffff8801a3e4f748 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801a3e46f40 RDI: 0000000000000282 RBP: ffff8801a3e4f7b0 R08: ffff8801a3e466c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1283 ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 bpf_prog_01d53e16fc18f1d9+0x5cd/0x1000 CPU: 1 PID: 5338 Comm: syz-fuzzer Not tainted 4.19.0-rc2+ #94 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-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor0 cpuset= __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 syz0 mems_allowed=0 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:100 Code: c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 8c 1e 83 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 d0 RSP: 0000:ffff8801bb33dc18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bb31e200 RBX: 1ffff10037667b86 RCX: ffffffff81a788ad RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8801bb33dc18 R08: ffff8801bb31e200 R09: ffffed003b5a4732 R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: 0000000000000001 R13: 0000000000000000 R14: 1ffff10037667b92 R15: dead000000000100 rcu_read_unlock include/linux/rcupdate.h:679 [inline] page_evictable+0x36b/0x540 mm/vmscan.c:4150 shrink_active_list+0x845/0x1c20 mm/vmscan.c:2106 shrink_list mm/vmscan.c:2250 [inline] shrink_node_memcg+0x803/0x18e0 mm/vmscan.c:2517 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2732 shrink_zones mm/vmscan.c:2964 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3026 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3241 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x993/0x2d80 mm/page_alloc.c:4191 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38f/0x5b0 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:6257 __do_fault+0x100/0x6b0 mm/memory.c:3240 do_read_fault mm/memory.c:3652 [inline] do_fault mm/memory.c:3752 [inline] handle_pte_fault mm/memory.c:3983 [inline] __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0033:0x45db60 Code: Bad RIP value. RSP: 002b:000000c420057ab8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 000000000045df89 RDX: 000000c420057ac0 RSI: 000000c420057bf0 RDI: 0000000000000011 RBP: 000000c420033e90 R08: 0000000000000003 R09: 000000c420000d80 R10: 00000000ffffffff R11: 0000000000000246 R12: 000000c425e49dd8 R13: 000000000000000f R14: 0000000000b79720 R15: ffffffffffffffff CPU: 0 PID: 7087 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #94 Mem-Info: active_anon:41015 inactive_anon:371 isolated_anon:0 active_file:15 inactive_file:16 isolated_file:2 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8542 slab_unreclaimable:1483152 mapped:41147 shmem:379 pagetables:605 bounce:0 free:13788 free_pcp:262 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:164060kB inactive_anon:1484kB active_file:60kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):8kB mapped:164588kB dirty:0kB writeback:0kB shmem:1516kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 153600kB 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+0x1c4/0x2b4 lib/dump_stack.c:113 lowmem_reserve[]: 0 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426 2815 6318 6318 Node 0 DMA32 free:25228kB min:30036kB low:37544kB high:45052kB active_anon:2048kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2887244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 3503 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 3503 Node 0 Normal free:14016kB min:37376kB low:46720kB high:56064kB active_anon:162012kB inactive_anon:1484kB active_file:60kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3587472kB mlocked:0kB kernel_stack:5184kB pagetables:2420kB bounce:0kB free_pcp:800kB local_pcp:332kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 3*4096kB (M) = 15908kB Node 0 DMA32: 3*4kB (M) 2*8kB (M) __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 1*16kB (M) fallback_alloc+0x203/0x2e0 mm/slab.c:3219 1*32kB (M) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 3*64kB (UM) slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 3*128kB (M) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 2*256kB (M) 3*512kB (M) 4*1024kB (UM) 3*2048kB (UM) 3*4096kB alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 (M) ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 = 25228kB addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 Node 0 Normal: call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 866*4kB (ME) 469*8kB (UME) 197*16kB (UME) 59*32kB (UME) 18*64kB (ME) 3*128kB (M) 1*256kB (U) 0*512kB 0*1024kB expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 0*2048kB 0*4096kB = 14048kB 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 412 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 343323 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) run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 syz-fuzzer cpuset= / __do_softirq+0x30b/0xad8 kernel/softirq.c:292 mems_allowed=0 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 76 b6 3e ff e9 c5 fe ff ff e8 8d 13 c3 ff 48 83 3d 2d 62 b0 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 b2 73 RSP: 0000:ffff8801a3e4f748 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801a3e46f40 RDI: 0000000000000282 RBP: ffff8801a3e4f7b0 R08: ffff8801a3e466c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1283 ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 bpf_prog_01d53e16fc18f1d9+0x5cd/0x1000 CPU: 1 PID: 5338 Comm: syz-fuzzer Not tainted 4.19.0-rc2+ #94 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+0x1c4/0x2b4 lib/dump_stack.c:113 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426 syz-executor0 cpuset= syz0 mems_allowed=0 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:100 Code: c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 8c 1e 83 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 d0 RSP: 0000:ffff8801bb33dc18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bb31e200 RBX: 1ffff10037667b86 RCX: ffffffff81a788ad RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8801bb33dc18 R08: ffff8801bb31e200 R09: ffffed003b5a4732 R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: 0000000000000001 R13: 0000000000000000 R14: 1ffff10037667b92 R15: dead000000000100 rcu_read_unlock include/linux/rcupdate.h:679 [inline] page_evictable+0x36b/0x540 mm/vmscan.c:4150 shrink_active_list+0x845/0x1c20 mm/vmscan.c:2106 shrink_list mm/vmscan.c:2250 [inline] shrink_node_memcg+0x803/0x18e0 mm/vmscan.c:2517 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2732 shrink_zones mm/vmscan.c:2964 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3026 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3241 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x993/0x2d80 mm/page_alloc.c:4191 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38f/0x5b0 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:6257 __do_fault+0x100/0x6b0 mm/memory.c:3240 do_read_fault mm/memory.c:3652 [inline] do_fault mm/memory.c:3752 [inline] handle_pte_fault mm/memory.c:3983 [inline] __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0033:0x45db60 Code: Bad RIP value. RSP: 002b:000000c420057ab8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 000000000045df89 RDX: 000000c420057ac0 RSI: 000000c420057bf0 RDI: 0000000000000011 RBP: 000000c420033e90 R08: 0000000000000003 R09: 000000c420000d80 R10: 00000000ffffffff R11: 0000000000000246 R12: 000000c425e49dd8 R13: 000000000000000f R14: 0000000000b79720 R15: ffffffffffffffff CPU: 0 PID: 7087 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #94 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:41015 inactive_anon:371 isolated_anon:0 active_file:15 inactive_file:16 isolated_file:2 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:8542 slab_unreclaimable:1483152 mapped:41147 shmem:379 pagetables:605 bounce:0 free:13788 free_pcp:262 free_cma:0 Call Trace: Node 0 active_anon:164060kB inactive_anon:1484kB active_file:60kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):8kB mapped:164588kB dirty:0kB writeback:0kB shmem:1516kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 153600kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 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[]: warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426 0 2815 6318 6318 Node 0 DMA32 free:25228kB min:30036kB low:37544kB high:45052kB active_anon:2048kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2887244kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:14016kB min:37376kB low:46720kB high:56064kB active_anon:162012kB inactive_anon:1484kB active_file:60kB inactive_file:64kB unevictable:0kB writepending:0kB present:4718592kB managed:3587472kB mlocked:0kB kernel_stack:5184kB pagetables:2420kB bounce:0kB free_pcp:800kB local_pcp:332kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (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+0x91/0x8c0 mm/slab.c:2677 Node 0 DMA32: fallback_alloc+0x203/0x2e0 mm/slab.c:3219 3*4kB ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 (M) slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 2*8kB (M) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 1*16kB (M) 1*32kB (M) 3*64kB (UM) 3*128kB (M) 2*256kB alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 (M) ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 3*512kB addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 (M) 4*1024kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 (UM) 3*2048kB (UM) 3*4096kB (M) = 25228kB Node 0 Normal: 866*4kB (ME) 469*8kB (UME) 197*16kB (UME) 59*32kB expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 (UME) 18*64kB (ME) 3*128kB (M) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 14048kB 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 412 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 Free swap = 0kB __do_softirq+0x30b/0xad8 kernel/softirq.c:292 Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 343323 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 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:slab_alloc mm/slab.c:3385 [inline] RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 Code: 7e 0f 85 cf fe ff ff e8 76 b6 3e ff e9 c5 fe ff ff e8 8d 13 c3 ff 48 83 3d 2d 62 b0 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 b2 73 RSP: 0000:ffff8801a3e4f748 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801a3e46f40 RDI: 0000000000000282 RBP: ffff8801a3e4f7b0 R08: ffff8801a3e466c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1283 ____bpf_clone_redirect net/core/filter.c:2075 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062 bpf_prog_01d53e16fc18f1d9+0x5cd/0x1000 CPU: 1 PID: 5338 Comm: syz-fuzzer Not tainted 4.19.0-rc2+ #94 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+0x1c4/0x2b4 lib/dump_stack.c:113 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor0 cpuset= syz0 mems_allowed=0 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x30b/0xad8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:100 Code: c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 8c 1e 83 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 d0 RSP: 0000:ffff8801bb33dc18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801bb31e200 RBX: 1ffff10037667b86 RCX: ffffffff81a788ad RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8801bb33dc18 R08: ffff8801bb31e200 R09: ffffed003b5a4732 R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: 0000000000000001 R13: 0000000000000000 R14: 1ffff10037667b92 R15: dead000000000100 rcu_read_unlock include/linux/rcupdate.h:679 [inline] page_evictable+0x36b/0x540 mm/vmscan.c:4150 shrink_active_list+0x845/0x1c20 mm/vmscan.c:2106 shrink_list mm/vmscan.c:2250 [inline] shrink_node_memcg+0x803/0x18e0 mm/vmscan.c:2517 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2732 shrink_zones mm/vmscan.c:2964 [inline] do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3026 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3241 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3790 [inline] __alloc_pages_slowpath+0x993/0x2d80 mm/page_alloc.c:4191 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38f/0x5b0 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:6257 __do_fault+0x100/0x6b0 mm/memory.c:3240 do_read_fault mm/memory.c:3652 [inline] do_fault mm/memory.c:3752 [inline] handle_pte_fault mm/memory.c:3983 [inline] __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470