CPU: 1 PID: 5666 Comm: syz-fuzzer Not tainted 4.19.0+ #74
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-...!: (93 ticks this GP) idle=422/1/0x4000000000000004 softirq=220442/220442 fqs=0 
 <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:3424
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
rcu: 	 (t=10710 jiffies g=46205 q=7)
rcu: rcu_preempt kthread starved for 10710 jiffies! g46205 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    21384    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3480
 schedule+0xfe/0x460 kernel/sched/core.c:3524
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 __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]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 kthread+0x35a/0x440 kernel/kthread.c:246
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
NMI backtrace for cpu 0
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118
Code: 74 0c 48 c7 c7 30 fa 51 89 e8 a1 9c fd f9 48 83 3d 29 00 8d 01 00 0f 84 63 fe ff ff e8 ee 69 ba f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db 69 ba f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801b9cce1e8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d71b2040 RBX: 1ffffffff12a3f46 RCX: 1ffff1003ae36526
RDX: 0000000000000000 RSI: ffffffff87c4fa12 RDI: 0000000000000293
RBP: ffff8801b9cce290 R08: ffff8801d71b2930 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d71b2040 R12: 1ffff10037399c45
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001
 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:3520 [inline]
 __alloc_pages_slowpath+0x2354/0x2e10 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 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:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3ea6/0x5be0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 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: 0033:0x45d911
Code: Bad RIP value.
RSP: 002b:000000c420035f18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000000045d911
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000c420035f28 R08: 000000c420035f18 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 0 PID: 11721 Comm: syz-executor5 Not tainted 4.19.0+ #74
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:50643 inactive_anon:847 isolated_anon:0
 active_file:14 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9230 slab_unreclaimable:1469886
 mapped:49154 shmem:854 pagetables:629 bounce:0
 free:13794 free_pcp:158 free_cma:0
Call Trace:
Node 0 active_anon:202572kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:3416kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 188416kB 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:25280kB min:30052kB low:37564kB high:45076kB active_anon:236kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888756kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:220kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13988kB min:37364kB low:46704kB high:56044kB active_anon:202336kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5344kB pagetables:2516kB bounce:0kB free_pcp:412kB local_pcp:252kB free_cma:0kB
 nmi_cpu_backtrace.cold.1+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+0x1b3/0x1ed lib/nmi_backtrace.c:62
Node 0 DMA32: 2*4kB (H) 3*8kB (UMH) 2*16kB (M) 2*32kB (MH) 5*64kB (MH) 4*128kB (M) 5*256kB (MH) 5*512kB (UM) 4*1024kB (UM) 2*2048kB (UM) 3*4096kB (M) = 25280kB
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
Node 0 Normal: 737*4kB (UMEH) 442*8kB (UME) 213*16kB (UME) 70*32kB (UME) 7*64kB (UMH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13988kB
 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
881 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
342858 pages reserved
0 pages cma reserved
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: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: 3f 7e 0f 85 32 ff ff ff e8 65 5d 3e ff e9 28 ff ff ff e8 9c 6c c3 ff 48 83 3d d4 db 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 c2 14
RSP: 0000:ffff8801dae07268 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff10036d14996
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8801dae072d8 R08: ffff8801b68a4cb0 R09: 0000000000000002
R10: 0000000000000000 R11: ffff8801b68a43c0 R12: ffff8801d9bccc00
R13: ffff8801d9bccc00 R14: 0000000000000000 R15: 0000000000000286
 __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]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 b6 3d 3e ff e9 c5 fe ff ff e8 ed 4c c3 ff 48 83 3d 25 bc 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 c2 14
RSP: 0000:ffff8801bf14f738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801b68a4c40 RDI: 0000000000000286
RBP: ffff8801bf14f7a0 R08: ffff8801b68a43c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bccc00 R14: ffff8801d9bccc00 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+0x6c2/0x1000
CPU: 1 PID: 5666 Comm: syz-fuzzer Not tainted 4.19.0+ #74
syz-executor5: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
syz-executor5 cpuset=syz5 mems_allowed=0
 <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:3424
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __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]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118
Code: 74 0c 48 c7 c7 30 fa 51 89 e8 a1 9c fd f9 48 83 3d 29 00 8d 01 00 0f 84 63 fe ff ff e8 ee 69 ba f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db 69 ba f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801b9cce1e8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d71b2040 RBX: 1ffffffff12a3f46 RCX: 1ffff1003ae36526
RDX: 0000000000000000 RSI: ffffffff87c4fa12 RDI: 0000000000000293
RBP: ffff8801b9cce290 R08: ffff8801d71b2930 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d71b2040 R12: 1ffff10037399c45
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001
 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:3520 [inline]
 __alloc_pages_slowpath+0x2354/0x2e10 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 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:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3ea6/0x5be0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 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: 0033:0x45d911
Code: Bad RIP value.
RSP: 002b:000000c420035f18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000000045d911
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000c420035f28 R08: 000000c420035f18 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
Mem-Info:
CPU: 0 PID: 11721 Comm: syz-executor5 Not tainted 4.19.0+ #74
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:50643 inactive_anon:847 isolated_anon:0
 active_file:14 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9230 slab_unreclaimable:1469886
 mapped:49154 shmem:854 pagetables:629 bounce:0
 free:13794 free_pcp:158 free_cma:0
Call Trace:
Node 0 active_anon:202572kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:3416kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 188416kB 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:25280kB min:30052kB low:37564kB high:45076kB active_anon:236kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888756kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:220kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3424
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13988kB min:37364kB low:46704kB high:56044kB active_anon:202336kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5344kB pagetables:2516kB bounce:0kB free_pcp:412kB local_pcp:252kB 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: 2*4kB (H) 3*8kB (UMH) 2*16kB (M) 2*32kB (MH) 5*64kB (MH) 4*128kB (M) 5*256kB (MH) 5*512kB (UM) 4*1024kB (UM) 2*2048kB (UM) 3*4096kB (M) = 25280kB
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
Node 0 Normal: 737*4kB (UMEH) 442*8kB (UME) 213*16kB (UME) 70*32kB (UME) 7*64kB (UMH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13988kB
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
881 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
342858 pages reserved
0 pages cma reserved
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:4396
 __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]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 b6 3d 3e ff e9 c5 fe ff ff e8 ed 4c c3 ff 48 83 3d 25 bc 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 c2 14
RSP: 0000:ffff8801bf14f738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801b68a4c40 RDI: 0000000000000286
RBP: ffff8801bf14f7a0 R08: ffff8801b68a43c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bccc00 R14: ffff8801d9bccc00 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+0x6c2/0x1000
CPU: 1 PID: 5666 Comm: syz-fuzzer Not tainted 4.19.0+ #74
syz-executor5: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
syz-executor5 cpuset=syz5 mems_allowed=0
Call Trace:
 <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:3424
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __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
 </IRQ>
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 30 fa 51 89 e8 a1 9c fd f9 48 83 3d 29 00 8d 01 00 0f 84 63 fe ff ff e8 ee 69 ba f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db 69 ba f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801b9cce1e8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d71b2040 RBX: 1ffffffff12a3f46 RCX: 1ffff1003ae36526
RDX: 0000000000000000 RSI: ffffffff87c4fa12 RDI: 0000000000000293
RBP: ffff8801b9cce290 R08: ffff8801d71b2930 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d71b2040 R12: 1ffff10037399c45
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001
 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:3520 [inline]
 __alloc_pages_slowpath+0x2354/0x2e10 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 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:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3ea6/0x5be0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 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: 0033:0x45d911
Code: Bad RIP value.
RSP: 002b:000000c420035f18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000000045d911
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000c420035f28 R08: 000000c420035f18 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 11721 Comm: syz-executor5 Not tainted 4.19.0+ #74
Mem-Info:
active_anon:50643 inactive_anon:847 isolated_anon:0
 active_file:14 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9230 slab_unreclaimable:1469886
 mapped:49154 shmem:854 pagetables:629 bounce:0
 free:13794 free_pcp:158 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:202572kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:3416kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 188416kB 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:25280kB min:30052kB low:37564kB high:45076kB active_anon:236kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888756kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:220kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3424
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13988kB min:37364kB low:46704kB high:56044kB active_anon:202336kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5344kB pagetables:2516kB bounce:0kB free_pcp:412kB local_pcp:252kB 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: 2*4kB (H) 3*8kB (UMH) 2*16kB (M) 2*32kB (MH) 5*64kB (MH) 4*128kB (M) 5*256kB (MH) 5*512kB (UM) 4*1024kB (UM) 2*2048kB (UM) 3*4096kB (M) = 25280kB
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
Node 0 Normal: 737*4kB (UMEH) 442*8kB (UME) 213*16kB (UME) 70*32kB (UME) 7*64kB (UMH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13988kB
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
881 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
342858 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:4396
 __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]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 b6 3d 3e ff e9 c5 fe ff ff e8 ed 4c c3 ff 48 83 3d 25 bc 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 c2 14
RSP: 0000:ffff8801bf14f738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801b68a4c40 RDI: 0000000000000286
RBP: ffff8801bf14f7a0 R08: ffff8801b68a43c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9bccc00 R14: ffff8801d9bccc00 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+0x6c2/0x1000
CPU: 1 PID: 5666 Comm: syz-fuzzer Not tainted 4.19.0+ #74
syz-executor5: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
syz-executor5 cpuset=syz5 mems_allowed=0
Call Trace:
 <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:3424
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __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
 </IRQ>
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 30 fa 51 89 e8 a1 9c fd f9 48 83 3d 29 00 8d 01 00 0f 84 63 fe ff ff e8 ee 69 ba f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db 69 ba f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801b9cce1e8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d71b2040 RBX: 1ffffffff12a3f46 RCX: 1ffff1003ae36526
RDX: 0000000000000000 RSI: ffffffff87c4fa12 RDI: 0000000000000293
RBP: ffff8801b9cce290 R08: ffff8801d71b2930 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d71b2040 R12: 1ffff10037399c45
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001
 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:3520 [inline]
 __alloc_pages_slowpath+0x2354/0x2e10 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 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:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3ea6/0x5be0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 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: 0033:0x45d911
Code: Bad RIP value.
RSP: 002b:000000c420035f18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000000045d911
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000c420035f28 R08: 000000c420035f18 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 0 PID: 11721 Comm: syz-executor5 Not tainted 4.19.0+ #74
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:50643 inactive_anon:847 isolated_anon:0
 active_file:14 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9230 slab_unreclaimable:1469886
 mapped:49154 shmem:854 pagetables:629 bounce:0
 free:13794 free_pcp:158 free_cma:0
Call Trace:
Node 0 active_anon:202572kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:3416kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 188416kB 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:25280kB min:30052kB low:37564kB high:45076kB active_anon:236kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888756kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:220kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3424
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13988kB min:37364kB low:46704kB high:56044kB active_anon:202336kB inactive_anon:3388kB active_file:56kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5344kB pagetables:2516kB bounce:0kB free_pcp:412kB local_pcp:252kB 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: 2*4kB (H) 3*8kB (UMH) 2*16kB (M) 2*32kB (MH) 5*64kB (MH) 4*128kB (M) 5*256kB (MH) 5*512kB (UM) 4*1024kB (UM) 2*2048kB (UM) 3*4096kB (M) = 25280kB
 __alloc_pages_slowpath+0x26e8/0x2e10 mm/page_alloc.c:4303
Node 0 Normal: 737*4kB (UMEH) 442*8kB (UME) 213*16kB (UME) 70*32kB (UME) 7*64kB (UMH) 1*128kB (H) 1*256kB (H) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 13988kB
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
881 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
342858 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:4396
 __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]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407