syzbot

RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
rcu: 	1-...!: (309 ticks this GP) idle=eea/1/0x4000000000000002 softirq=100734/100735 fqs=24 
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
rcu: 	(detected by 0, t=10615 jiffies, g=120605, q=81)
Sending NMI from CPU 0 to CPUs 1:
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 alloc_pages_node include/linux/gfp.h:523 [inline]
 __page_frag_cache_refill mm/page_alloc.c:4504 [inline]
 page_frag_alloc+0x541/0x670 mm/page_alloc.c:4529
NMI backtrace for cpu 1
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:94
Code: 41 bc f4 ff ff ff e8 73 60 ea ff 48 c7 05 14 ef 5d 09 00 00 00 00 e9 96 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 f8 10
RSP: 0018:ffff8880ae9070b8 EFLAGS: 00000046
RAX: 0000000000000102 RBX: 000000000000000a RCX: ffffffff874f84b7
RDX: 000000000000000a RSI: 000000000000000a RDI: 0000000000000001
RBP: ffff8880ae9071e8 R08: ffff888029e62700 R09: fffffbfff15888a5
R10: fffffbfff15888a4 R11: ffffffff8ac44520 R12: 00000000000004e0
R13: 0000000000000000 R14: 000000000000000a R15: ffffffff8ac44521
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000045c41f CR3: 0000000069edb000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 vsnprintf+0x26b/0x19a0 lib/vsprintf.c:2359
 sprintf+0xc0/0x100 lib/vsprintf.c:2495
 print_time kernel/printk/printk.c:1236 [inline]
 print_prefix+0x386/0x3f0 kernel/printk/printk.c:1259
 msg_print_text+0xc9/0x1c0 kernel/printk/printk.c:1286
 console_unlock+0x3a5/0x10d0 kernel/printk/printk.c:2403
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 printk_stack_address arch/x86/kernel/dumpstack.c:71 [inline]
 show_trace_log_lvl+0x23a/0x28c arch/x86/kernel/dumpstack.c:258
 show_stack+0x39/0x3b arch/x86/kernel/dumpstack.c:293
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 alloc_pages_node include/linux/gfp.h:523 [inline]
 __page_frag_cache_refill mm/page_alloc.c:4504 [inline]
 page_frag_alloc+0x541/0x670 mm/page_alloc.c:4529
 __netdev_alloc_skb+0x20a/0x470 net/core/skbuff.c:418
 netdev_alloc_skb include/linux/skbuff.h:2663 [inline]
 dev_alloc_skb include/linux/skbuff.h:2676 [inline]
 send_hsr_supervision_frame+0x110/0xfc0 net/hsr/hsr_device.c:265
 hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:350
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
rcu: rcu_preempt kthread starved for 10547 jiffies! g120605 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
 __netdev_alloc_skb+0x20a/0x470 net/core/skbuff.c:418
rcu_preempt     R  running task    29488    10      2 0x80000000
 netdev_alloc_skb include/linux/skbuff.h:2663 [inline]
 dev_alloc_skb include/linux/skbuff.h:2676 [inline]
 send_hsr_supervision_frame+0x110/0xfc0 net/hsr/hsr_device.c:265
Call Trace:
 context_switch kernel/sched/core.c:2826 [inline]
 __schedule+0x866/0x1dc0 kernel/sched/core.c:3515
 hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:350
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 schedule+0x92/0x1c0 kernel/sched/core.c:3559
 schedule_timeout+0x4db/0xfc0 kernel/time/timer.c:1806
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 rcu_gp_kthread+0xd4e/0x21c0 kernel/rcu/tree.c:2202
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
 kthread+0x354/0x420 kernel/kthread.c:246
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
aoe: skb alloc failure
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0-1
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x197/0x210 lib/dump_stack.c:118
lowmem_reserve[]: 0 2545 2546 2546 2546
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
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
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
279 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
Free swap  = 0kB
Total swap = 0kB
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
1965979 pages RAM
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
0 pages HighMem/MovableOnly
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
341741 pages reserved
0 pages cma reserved
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.085 msecs
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/u4:2 cpuset=/ mems_allowed=0-1
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x7b/0x173 mm/page_alloc.c:3455
lowmem_reserve[]: 0 2545 2546 2546 2546
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
279 total pagecache pages
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
0 pages in swap cache
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
341741 pages reserved
0 pages cma reserved
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
kworker/u4:2 cpuset=/ mems_allowed=0-1
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Call Trace:
syz-fuzzer cpuset=/ mems_allowed=0-1
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x197/0x210 lib/dump_stack.c:118
lowmem_reserve[]: 0 2545 2546 2546 2546
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
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
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
279 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
Total swap = 0kB
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
1965979 pages RAM
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
0 pages HighMem/MovableOnly
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
341741 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
kworker/u4:2 cpuset=/ mems_allowed=0-1
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Call Trace:
syz-fuzzer cpuset=/ mems_allowed=0-1
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x197/0x210 lib/dump_stack.c:118
lowmem_reserve[]: 0 2545 2546 2546 2546
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
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
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
279 total pagecache pages
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
0 pages in swap cache
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
Total swap = 0kB
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
1965979 pages RAM
0 pages HighMem/MovableOnly
341741 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
kworker/u4:2 cpuset=/ mems_allowed=0-1
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
syz-fuzzer cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x7b/0x173 mm/page_alloc.c:3455
lowmem_reserve[]: 0 2545 2546 2546 2546
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
279 total pagecache pages
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
0 pages in swap cache
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
Swap cache stats: add 0, delete 0, find 0/0
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
Free swap  = 0kB
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
341741 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
kworker/u4:2 cpuset=/ mems_allowed=0-1
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Call Trace:
syz-fuzzer cpuset=/ mems_allowed=0-1
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x7b/0x173 mm/page_alloc.c:3455
lowmem_reserve[]: 0 2545 2546 2546 2546
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
279 total pagecache pages
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
0 pages in swap cache
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
341741 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
kworker/u4:2 cpuset=/ mems_allowed=0-1
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0-1
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:slab_alloc mm/slab.c:3390 [inline]
RIP: 0010:kmem_cache_alloc+0x287/0x700 mm/slab.c:3557
Code: 7e 0f 85 db fe ff ff e8 08 46 5e ff e9 d1 fe ff ff e8 3d f7 cd ff 48 83 3d 9d 35 50 07 00 0f 84 27 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 64 fe ff ff 31 d2 be a6 01 00 00 48 c7 c7 d2 1e
RSP: 0018:ffff88807af4fc18 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000480020 RCX: 1ffff110053cc5f9
RDX: 0000000000000000 RSI: ffff888029e62fa8 RDI: 0000000000000286
RBP: ffff88807af4fc80 R08: ffff888029e62700 R09: ffff888029e62fc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88821bab2b40 R14: 0000000000480020 R15: ffff88821bab2b40
 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:573 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:604 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x622/0x7b0 net/batman-adv/bat_iv_ogm.c:1853
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8082 Comm: syz-fuzzer Not tainted 4.19.105-syzkaller #0
Mem-Info:
active_anon:97994 inactive_anon:203 isolated_anon:0
 active_file:13 inactive_file:13 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:11442 slab_unreclaimable:1405421
 mapped:52226 shmem:253 pagetables:855 bounce:0
 free:10948 free_pcp:188 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:208904kB dirty:0kB writeback:0kB shmem:1012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 116736kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 1 active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
Node 0 DMA free:10268kB min:220kB low:272kB high:324kB 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+0x7b/0x173 mm/page_alloc.c:3455
lowmem_reserve[]: 0 2545 2546 2546 2546
Node 0 DMA32 free:13536kB min:36168kB low:45208kB high:54248kB active_anon:391512kB inactive_anon:812kB active_file:52kB inactive_file:48kB unevictable:0kB writepending:0kB present:3129332kB managed:2609736kB mlocked:0kB kernel_stack:7136kB pagetables:3420kB bounce:0kB free_pcp:444kB local_pcp:164kB free_cma:0kB
lowmem_reserve[]: 0 0 1 1 1
Node 0 Normal free:0kB min:12kB low:12kB high:12kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:786432kB managed:1140kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
Node 1 Normal free:19988kB min:53704kB low:67128kB high:80552kB active_anon:464kB inactive_anon:0kB active_file:0kB inactive_file:4kB unevictable:0kB writepending:0kB present:3932160kB managed:3870168kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:308kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 2*4096kB (M) = 10268kB
Node 0 DMA32: 436*4kB (ME) 498*8kB (UME) 184*16kB (UMEH) 70*32kB (UMH) 11*64kB (MH) 5*128kB (UH) 3*256kB (H) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 13536kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
Node 1 Normal: 5*4kB (UM) 4*8kB (UME) 2*16kB (ME) 2*32kB (ME) 2*64kB (UM) 2*128kB (UM) 2*256kB (ME) 3*512kB (UME) 3*1024kB (UM) 1*2048kB (U) 3*4096kB (M) = 19988kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
279 total pagecache pages
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
0 pages in swap cache
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
Swap cache stats: add 0, delete 0, find 0/0
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
341741 pages reserved
0 pages cma reserved
 alloc_skb include/linux/skbuff.h:995 [inline]
 new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x1b5/0x640 drivers/block/aoe/aoecmd.c:1374
kworker/u4:2: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 discover_timer+0x4e/0x60 drivers/block/aoe/aoemain.c:24
kworker/u4:2 cpuset=/ mems_allowed=0-1
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:console_unlock+0xf3c/0x10d0 kernel/printk/printk.c:2433
Code: fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 cb 00 00 00 48 83 3d 5d 64 9d 07 00 0f 84 b6 00 00 00 e8 8a ea 15 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 15 f9 ff ff 48 8b 7d b0 e8 c1 87 4d 00 e9 9b f3
RSP: 0018:ffff88808bd17278 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88808bb9a1c0 RBX: 0000000000000200 RCX: 1ffff1101177355b
RDX: 0000000000000000 RSI: ffffffff8154f236 RDI: 0000000000000293
RBP: ffff88808bd17300 R08: ffff88808bb9a1c0 R09: ffff88808bb9aad8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84694c50 R14: 0000000000000075 R15: ffffffff8965d710
 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2012
 dump_unreclaimable_slab.cold+0xde/0xef mm/slab_common.c:1372
 dump_header+0x44b/0xa55 mm/oom_kill.c:447
 oom_kill_process.cold+0x10/0x6ef mm/oom_kill.c:954
 out_of_memory mm/oom_kill.c:1130 [inline]
 out_of_memory+0x362/0x1330 mm/oom_kill.c:1062
 __alloc_pages_may_oom mm/page_alloc.c:3551 [inline]
 __alloc_pages_slowpath+0x20b5/0x2870 mm/page_alloc.c:4253
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197
 alloc_pages include/linux/gfp.h:532 [inline]
 __page_cache_alloc mm/filemap.c:969 [inline]
 __page_cache_alloc+0x2bd/0x450 mm/filemap.c:954
 page_cache_read mm/filemap.c:2408 [inline]
 filemap_fault+0xfeb/0x1f00 mm/filemap.c:2592
 ext4_filemap_fault+0x83/0xaf fs/ext4/inode.c:6365
 __do_fault+0x111/0x480 mm/memory.c:3269
 do_read_fault mm/memory.c:3681 [inline]
 do_fault mm/memory.c:3810 [inline]
 handle_pte_fault mm/memory.c:4041 [inline]
 __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165
 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202
 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1390
 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1465
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1204
RIP: 0033:0x45b153
Code: Bad RIP value.
RSP: 002b:000000c42003e6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b975427 RCX: 000000000045b153
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001e56ce0
RBP: 000000c42003e6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42003e6d8 R11: 0000000000000206 R12: 000000c42e27f000
R13: 00000000000000bc R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 22474 Comm: kworker/u4:2 Not tainted 4.19.105-syzkaller #0
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Call Trace:
syz-fuzzer cpuset=/ mems_allowed=0-1
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 warn_alloc.cold+0x7b/0x173 mm/page_alloc.c:3455
 __alloc_pages_slowpath+0x2214/0x2870 mm/page_alloc.c:4315
 __alloc_pages_nodemask+0x617/0x750 mm/page_alloc.c:4417
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2682
 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3224
 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3292
 slab_alloc_node mm/slab.c:3332 [inline]
 kmem_cache_alloc_node+0xe3/0x710 mm/slab.c:3647
 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x13c/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x35f/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3825
 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers kernel/time/timer.c:1684 [inline]
 __run_timers kernel/time/timer.c:1652 [inline]
 run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094