CPU: 1 PID: 5375 Comm: syz-fuzzer Not tainted 4.19.0+ #72 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 0, t=10675 jiffies, g=38893, q=42) __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 rcu: All QSes seen, last rcu_preempt kthread activity 8580 (4294981495-4294972915), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor0 R warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 running task 20648 17787 5378 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 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 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 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 95 f7 3f ff e9 28 ff ff ff e8 ec c1 c3 ff 48 83 3d 44 70 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 6a b1 RSP: 0000:ffff8801dae073d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff1003253cd21 RDX: 0000000000000000 RSI: ffff8801929e6910 RDI: 0000000000000286 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 RBP: ffff8801dae07448 R08: ffff8801929e6908 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8801929e6040 R12: ffff8801d9a05040 __do_softirq+0x308/0xb7e kernel/softirq.c:292 R13: ffff8801d9a05040 R14: 0000000000000000 R15: 0000000000000286 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381 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 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24 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_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 95 31 8e f9 e8 90 e2 bd f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d ea 90 8b 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d c0 90 RSP: 0000:ffff8801c4c0e140 EFLAGS: 00000286 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff1003afce19e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d7e70c7c RBP: ffff8801c4c0e168 R08: ffff8801d7e70cf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801d7e70400 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d 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 91 c1 00 fa 48 83 3d 99 b9 91 01 00 0f 84 63 fe ff ff e8 ee e6 bd f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db e6 bd f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801c4c0e220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02 RAX: ffff8801d7e70400 RBX: 1ffffffff12a3e8e RCX: 1ffff1003afce19e RDX: 0000000000000000 RSI: ffffffff87c03ae2 RDI: 0000000000000293 RBP: ffff8801c4c0e2c8 R08: ffff8801d7e70cf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801d7e70400 R12: 1ffff10038981c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 dump_header+0x27b/0xf72 mm/oom_kill.c:441 __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 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 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 f6 d7 3f ff e9 c5 fe ff ff e8 4d a2 c3 ff 48 83 3d a5 50 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 6a b1 RSP: 0000:ffff88019c63f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801929e68c0 RDI: 0000000000000286 RBP: ffff88019c63f7a8 R08: ffff8801929e6040 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d9a05040 R14: ffff8801d9a05040 R15: 0000000000480020 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 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 ____bpf_clone_redirect net/core/filter.c:2080 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x325/0x1000 __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 rcu: rcu_preempt kthread starved for 8580 jiffies! g38893 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 schedule+0xfe/0x460 kernel/sched/core.c:3518 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291 __do_fault+0x100/0x6b0 mm/memory.c:2993 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 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 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: 0033:0x45ddf3 Code: Bad RIP value. RSP: 002b:000000c4200206a0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b974269 RCX: 000000000045ddf3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014e1060 RBP: 000000c4200206e8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c4200206d8 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000007 R14: 0000000000b7f720 R15: 000000000000bdf9 warn_alloc_show_mem: 1 callbacks suppressed Mem-Info: active_anon:46452 inactive_anon:2315 isolated_anon:0 active_file:13 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9341 slab_unreclaimable:1470635 mapped:24578 shmem:7010 pagetables:528 bounce:0 free:13753 free_pcp:603 free_cma:0 Node 0 active_anon:185808kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:98312kB dirty:0kB writeback:0kB shmem:28040kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 14336kB 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:25180kB min:30052kB low:37564kB high:45076kB active_anon:2048kB 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 kthread+0x35a/0x420 kernel/kthread.c:246 Node 0 Normal free:13924kB min:37364kB low:46704kB high:56044kB active_anon:183760kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5536kB pagetables:2112kB bounce:0kB free_pcp:2164kB local_pcp:1336kB free_cma:0kB lowmem_reserve[]: 0 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350 0 0 aoe: skb alloc failure 0 Node 0 DMA: 1*4kB (U) 0*8kB syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) 0*16kB 1*32kB syz-executor0 cpuset= (U) 2*64kB syz0 (U) 1*128kB mems_allowed=0 (U) CPU: 0 PID: 17787 Comm: syz-executor0 Not tainted 4.19.0+ #72 1*256kB (U) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0*512kB 1*1024kB Call Trace: (U) 1*2048kB (M) 3*4096kB __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 (M) = 15908kB warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 Node 0 DMA32: 5*4kB (UM) 1*8kB (H) 2*16kB (M) __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 3*32kB (M) 3*64kB (MH) 4*128kB (M) 5*256kB (UMH) 5*512kB (UMH) 4*1024kB (UMH) 2*2048kB (UM) 3*4096kB (M) = 25180kB Node 0 Normal: 1917*4kB (UME) 392*8kB (UME) 105*16kB (UME) 43*32kB (UM) 1*64kB (U) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13924kB 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 7036 total pagecache pages __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 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 __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 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) fallback_alloc+0x204/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 syz-fuzzer cpuset= 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 mems_allowed=0 alloc_skb include/linux/skbuff.h:997 [inline] new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 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 f6 d7 3f ff e9 c5 fe ff ff e8 4d a2 c3 ff 48 83 3d a5 50 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 6a b1 RSP: 0000:ffff88019c63f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801929e68c0 RDI: 0000000000000286 RBP: ffff88019c63f7a8 R08: ffff8801929e6040 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+0x325/0x1000 Mem-Info: CPU: 1 PID: 5375 Comm: syz-fuzzer Not tainted 4.19.0+ #72 active_anon:46452 inactive_anon:2315 isolated_anon:0 active_file:13 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9341 slab_unreclaimable:1470635 mapped:24578 shmem:7010 pagetables:528 bounce:0 free:13753 free_pcp:603 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Node 0 active_anon:185808kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:98312kB dirty:0kB writeback:0kB shmem:28040kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 14336kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 0 2818 6321 6321 Node 0 DMA32 free:25180kB min:30052kB low:37564kB high:45076kB active_anon:2048kB 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[]: 0 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 0 3503 3503 Node 0 Normal free:13924kB min:37364kB low:46704kB high:56044kB active_anon:183760kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5536kB pagetables:2112kB bounce:0kB free_pcp:2164kB local_pcp:828kB 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 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 5*4kB (UM) 1*8kB (H) __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 2*16kB (M) 3*32kB (M) fallback_alloc+0x204/0x2e0 mm/slab.c:3219 3*64kB (MH) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 4*128kB slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 (M) 5*256kB (UMH) 5*512kB (UMH) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 4*1024kB (UMH) 2*2048kB (UM) 3*4096kB (M) = 25180kB Node 0 Normal: 1917*4kB (UME) 392*8kB (UME) 105*16kB (UME) 43*32kB (UM) 1*64kB 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 (U) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440 = 13924kB 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 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253 7036 total pagecache pages 0 pages in swap cache call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 342867 pages reserved 0 pages cma reserved aoe: skb alloc failure syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor0 cpuset= syz0 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+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_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 95 31 8e f9 e8 90 e2 bd f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d ea 90 8b 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d c0 90 RSP: 0000:ffff8801c4c0e140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff1003afce19e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d7e70c7c RBP: ffff8801c4c0e168 R08: ffff8801d7e70cf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801d7e70400 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d 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 91 c1 00 fa 48 83 3d 99 b9 91 01 00 0f 84 63 fe ff ff e8 ee e6 bd f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db e6 bd f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801c4c0e220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02 RAX: ffff8801d7e70400 RBX: 1ffffffff12a3e8e RCX: 1ffff1003afce19e RDX: 0000000000000000 RSI: ffffffff87c03ae2 RDI: 0000000000000293 RBP: ffff8801c4c0e2c8 R08: ffff8801d7e70cf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801d7e70400 R12: 1ffff10038981c4c 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: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:6291 __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: 0033:0x45ddf3 Code: Bad RIP value. RSP: 002b:000000c4200206a0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b974269 RCX: 000000000045ddf3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014e1060 RBP: 000000c4200206e8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c4200206d8 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000007 R14: 0000000000b7f720 R15: 000000000000bdf9 CPU: 0 PID: 17787 Comm: syz-executor0 Not tainted 4.19.0+ #72 Mem-Info: active_anon:46452 inactive_anon:2315 isolated_anon:0 active_file:13 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9341 slab_unreclaimable:1470635 mapped:24578 shmem:7010 pagetables:528 bounce:0 free:13753 free_pcp:603 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Node 0 active_anon:185808kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:98312kB dirty:0kB writeback:0kB shmem:28040kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 14336kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 2818 6321 6321 Node 0 DMA32 free:25180kB min:30052kB low:37564kB high:45076kB active_anon:2048kB 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:13924kB min:37364kB low:46704kB high:56044kB active_anon:183760kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5536kB pagetables:2112kB bounce:0kB free_pcp:2164kB local_pcp:1336kB 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 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 DMA32: 5*4kB (UM) 1*8kB (H) 2*16kB (M) 3*32kB (M) 3*64kB __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 (MH) 4*128kB (M) fallback_alloc+0x204/0x2e0 mm/slab.c:3219 5*256kB (UMH) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 5*512kB (UMH) slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 4*1024kB (UMH) 2*2048kB (UM) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 3*4096kB (M) = 25180kB Node 0 Normal: 1917*4kB (UME) 392*8kB (UME) 105*16kB (UME) alloc_skb include/linux/skbuff.h:997 [inline] new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67 43*32kB (UM) aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381 1*64kB (U) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24 = 13924kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 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 7036 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 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+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 f6 d7 3f ff e9 c5 fe ff ff e8 4d a2 c3 ff 48 83 3d a5 50 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 6a b1 RSP: 0000:ffff88019c63f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801929e68c0 RDI: 0000000000000286 RBP: ffff88019c63f7a8 R08: ffff8801929e6040 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+0x325/0x1000 CPU: 1 PID: 5375 Comm: syz-fuzzer Not tainted 4.19.0+ #72 aoe: skb alloc failure 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+0x244/0x39d lib/dump_stack.c:113 syz0 mems_allowed=0 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677 fallback_alloc+0x204/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] 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 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 95 31 8e f9 e8 90 e2 bd f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d ea 90 8b 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d c0 90 RSP: 0000:ffff8801c4c0e140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff1003afce19e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d7e70c7c RBP: ffff8801c4c0e168 R08: ffff8801d7e70cf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801d7e70400 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d 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 91 c1 00 fa 48 83 3d 99 b9 91 01 00 0f 84 63 fe ff ff e8 ee e6 bd f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 db e6 bd f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801c4c0e220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02 RAX: ffff8801d7e70400 RBX: 1ffffffff12a3e8e RCX: 1ffff1003afce19e RDX: 0000000000000000 RSI: ffffffff87c03ae2 RDI: 0000000000000293 RBP: ffff8801c4c0e2c8 R08: ffff8801d7e70cf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801d7e70400 R12: 1ffff10038981c4c 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: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:6291 __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: 0033:0x45ddf3 Code: Bad RIP value. RSP: 002b:000000c4200206a0 EFLAGS: 00010206 RAX: ffffffffffffff92 RBX: 000000003b974269 RCX: 000000000045ddf3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014e1060 RBP: 000000c4200206e8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000c4200206d8 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000007 R14: 0000000000b7f720 R15: 000000000000bdf9 CPU: 0 PID: 17787 Comm: syz-executor0 Not tainted 4.19.0+ #72 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:46452 inactive_anon:2315 isolated_anon:0 active_file:13 inactive_file:13 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9341 slab_unreclaimable:1470635 mapped:24578 shmem:7010 pagetables:528 bounce:0 free:13753 free_pcp:603 free_cma:0 Call Trace: Node 0 active_anon:185808kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:98312kB dirty:0kB writeback:0kB shmem:28040kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 14336kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 lowmem_reserve[]: 0 2818 6321 6321 Node 0 DMA32 free:25180kB min:30052kB low:37564kB high:45076kB active_anon:2048kB 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:13924kB min:37364kB low:46704kB high:56044kB active_anon:183760kB inactive_anon:9260kB active_file:52kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5536kB pagetables:2112kB bounce:0kB free_pcp:2164kB local_pcp:1336kB 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: 5*4kB (UM) 1*8kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 (H) 2*16kB (M) 3*32kB (M) 3*64kB (MH) 4*128kB (M) 5*256kB (UMH) __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 5*512kB (UMH) fallback_alloc+0x204/0x2e0 mm/slab.c:3219 4*1024kB (UMH) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 2*2048kB (UM) slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 3*4096kB (M) = 25180kB Node 0 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 Normal: 1917*4kB (UME) 392*8kB (UME) 105*16kB (UME) 43*32kB (UM) 1*64kB (U) alloc_skb include/linux/skbuff.h:997 [inline] new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67 0*128kB 0*256kB aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline] aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13924kB 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 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24 7036 total pagecache pages call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 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 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+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 f6 d7 3f ff e9 c5 fe ff ff e8 4d a2 c3 ff 48 83 3d a5 50 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 6a b1 RSP: 0000:ffff88019c63f740 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801929e68c0 RDI: 0000000000000286 RBP: ffff88019c63f7a8 R08: ffff8801929e6040 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+0x325/0x1000 CPU: 1 PID: 5375 Comm: syz-fuzzer Not tainted 4.19.0+ #72 aoe: skb alloc failure 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-executor0: 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-executor0 cpuset= syz0 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