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INFO: rcu detected stall in discover_timer

Status: closed as dup on 2019/01/02 16:30
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+a2845eaf6c025f6d0454@syzkaller.appspotmail.com
First crash: 2262d, last: 2084d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
INFO: rcu detected stall in ndisc_alloc_skb net 1 2237d 2157d
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 INFO: rcu detected stall in discover_timer C error 16 1574d 1787d 0/1 upstream: reported C repro on 2020/01/05 20:03
upstream INFO: rcu detected stall in discover_timer (2) block 7 1819d 1882d 0/28 auto-closed as invalid on 2020/03/03 10:41
linux-4.19 INFO: rcu detected stall in discover_timer 1 1898d 1898d 0/1 auto-closed as invalid on 2020/01/14 13:25

Sample crash report:
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cdef8
RBP: 000000c420035ec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420035eb8 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 1 PID: 19281 Comm: syz-executor1 Not tainted 4.19.0+ #306
rcu: INFO: rcu_preempt self-detected stall on CPU
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
rcu: 	0-....: (99 ticks this GP) idle=466/1/0x4000000000000004 softirq=91464/91464 fqs=17 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
rcu: 	 (t=10560 jiffies g=140761 q=9)
rcu: rcu_preempt kthread starved for 2734 jiffies! g140761 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I22696    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3480
 schedule+0xfe/0x460 kernel/sched/core.c:3524
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 __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
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552
 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+0xf92/0x1000
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
active_anon:125131 inactive_anon:197 isolated_anon:0
 active_file:7 inactive_file:18 isolated_file:0
 unevictable:0 dirty:7 writeback:0 unstable:0
 slab_reclaimable:10983 slab_unreclaimable:1396219
 mapped:49154 shmem:216 pagetables:983 bounce:0
 free:13664 free_pcp:94 free_cma:0
Node 0 active_anon:500524kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:28kB writeback:0kB shmem:864kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 161792kB 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 2820 6324 6324
Node 0 DMA32 free:25064kB min:30060kB low:37572kB high:45084kB active_anon:32kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890788kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13684kB min:37352kB low:46688kB high:56024kB active_anon:500492kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5504kB pagetables:3932kB bounce:0kB free_pcp:376kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 1*8kB (M) 5*16kB (M) 4*32kB (UM) 4*64kB (UM) 4*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25064kB
Node 0 Normal: 1283*4kB (UME) 545*8kB (UME) 150*16kB (UME) 56*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13684kB
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
241 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
 kthread+0x35a/0x440 kernel/kthread.c:246
1965979 pages RAM
0 pages HighMem/MovableOnly
342286 pages reserved
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
0 pages cma reserved
syz-executor1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
NMI backtrace for cpu 0
syz-executor1 cpuset=syz1 mems_allowed=0
CPU: 0 PID: 5561 Comm: syz-fuzzer Not tainted 4.19.0+ #306
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.1+0x5c/0xa1 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline]
 rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195
 print_cpu_stall.cold.67+0x1f3/0x3c7 kernel/rcu/tree.c:1334
 check_cpu_stall kernel/rcu/tree.c:1408 [inline]
 rcu_pending kernel/rcu/tree.c:2961 [inline]
 rcu_check_callbacks+0xf3b/0x13f0 kernel/rcu/tree.c:2506
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642
Code: 40 7e 0f 85 32 ff ff ff e8 75 c7 3e ff e9 28 ff ff ff e8 6c ac c3 ff 48 83 3d 24 48 70 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 ca 5c
RSP: 0000:ffff8801dae073d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff1003762859b
RDX: 0000000000000000 RSI: ffff8801bb142ce0 RDI: 0000000000000286
RBP: ffff8801dae07448 R08: ffff8801bb142cd8 R09: 0000000000000002
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: ffff8801d9bcc600
R13: ffff8801d9bcc600 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
 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
 </IRQ>
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:3706
Code: 00 e8 d5 d7 9a f9 e8 70 7a ca f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 2a 16 77 01 00 74 61 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 00 16
RSP: 0000:ffff8801d880e140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1263f90 RBX: 0000000000000000 RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb142c3c
RBP: ffff8801d880e168 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: dffffc0000000000
R13: fffffbfff1263f8f R14: ffffffff8931fc80 R15: ffffffff8931fc78
 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 fc 31 89 e8 a1 73 0d fa 48 83 3d 79 43 7d 01 00 0f 84 63 fe ff ff e8 be 80 ca f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 ab 80 ca f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801d880e228 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02
RAX: ffff8801bb1423c0 RBX: 1ffffffff1263f8e RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: ffffffff87b4b902 RDI: 0000000000000293
RBP: ffff8801d880e2d0 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: 1ffff1003b101c4d
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3520 [inline]
 __alloc_pages_slowpath+0x2316/0x2dc0 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:945
 page_cache_read mm/filemap.c:2400 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2584
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3e9d/0x5bd0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420035e80 EFLAGS: 00010246
RAX: ffffffffffffff92 RBX: 0000000000000000 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cdef8
RBP: 000000c420035ec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420035eb8 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 1 PID: 19281 Comm: syz-executor1 Not tainted 4.19.0+ #306
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz-fuzzer cpuset=/ mems_allowed=0
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552
 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+0xf92/0x1000
Mem-Info:
CPU: 0 PID: 5561 Comm: syz-fuzzer Not tainted 4.19.0+ #306
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:125131 inactive_anon:197 isolated_anon:0
 active_file:7 inactive_file:18 isolated_file:0
 unevictable:0 dirty:7 writeback:0 unstable:0
 slab_reclaimable:10983 slab_unreclaimable:1396219
 mapped:49154 shmem:216 pagetables:983 bounce:0
 free:13664 free_pcp:94 free_cma:0
Call Trace:
Node 0 active_anon:500524kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:28kB writeback:0kB shmem:864kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 161792kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
lowmem_reserve[]: 0 2820 6324 6324
Node 0 DMA32 free:25064kB min:30060kB low:37572kB high:45084kB active_anon:32kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890788kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13684kB min:37352kB low:46688kB high:56024kB active_anon:500492kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5504kB pagetables:3932kB bounce:0kB free_pcp:376kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 1*8kB (M) 5*16kB (M) 4*32kB (UM) 4*64kB (UM) 4*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25064kB
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
Node 0 Normal: 1283*4kB (UME) 545*8kB (UME) 150*16kB (UME) 56*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13684kB
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
241 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
342286 pages reserved
0 pages cma reserved
ksoftirqd/1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
ksoftirqd/1 cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 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
 </IRQ>
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:3706
Code: 00 e8 d5 d7 9a f9 e8 70 7a ca f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 2a 16 77 01 00 74 61 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 00 16
RSP: 0000:ffff8801d880e140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1263f90 RBX: 0000000000000000 RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb142c3c
RBP: ffff8801d880e168 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: dffffc0000000000
R13: fffffbfff1263f8f R14: ffffffff8931fc80 R15: ffffffff8931fc78
 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 fc 31 89 e8 a1 73 0d fa 48 83 3d 79 43 7d 01 00 0f 84 63 fe ff ff e8 be 80 ca f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 ab 80 ca f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801d880e228 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02
RAX: ffff8801bb1423c0 RBX: 1ffffffff1263f8e RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: ffffffff87b4b902 RDI: 0000000000000293
RBP: ffff8801d880e2d0 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: 1ffff1003b101c4d
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3520 [inline]
 __alloc_pages_slowpath+0x2316/0x2dc0 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:945
 page_cache_read mm/filemap.c:2400 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2584
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3e9d/0x5bd0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420035e80 EFLAGS: 00010246
RAX: ffffffffffffff92 RBX: 0000000000000000 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cdef8
RBP: 000000c420035ec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420035eb8 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 4.19.0+ #306
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz-fuzzer cpuset=/ mems_allowed=0
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 run_ksoftirqd+0x5e/0x100 kernel/softirq.c:654
 smpboot_thread_fn+0x68b/0xa00 kernel/smpboot.c:164
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 5561 Comm: syz-fuzzer Not tainted 4.19.0+ #306
Mem-Info:
active_anon:125131 inactive_anon:197 isolated_anon:0
 active_file:7 inactive_file:18 isolated_file:0
 unevictable:0 dirty:7 writeback:0 unstable:0
 slab_reclaimable:10983 slab_unreclaimable:1396219
 mapped:49154 shmem:216 pagetables:983 bounce:0
 free:13664 free_pcp:94 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:500524kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:28kB writeback:0kB shmem:864kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 161792kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2820 6324 6324
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:25064kB min:30060kB low:37572kB high:45084kB active_anon:32kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890788kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
Node 0 Normal free:13684kB min:37352kB low:46688kB high:56024kB active_anon:500492kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5504kB pagetables:3932kB bounce:0kB free_pcp:376kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 1*8kB (M) 5*16kB (M) 4*32kB (UM) 4*64kB (UM) 4*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25064kB
Node 0 Normal: 1283*4kB (UME) 545*8kB (UME) 150*16kB (UME) 56*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13684kB
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
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
241 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
342286 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
ksoftirqd/1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
ksoftirqd/1 cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 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
 </IRQ>
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:3706
Code: 00 e8 d5 d7 9a f9 e8 70 7a ca f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 2a 16 77 01 00 74 61 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 00 16
RSP: 0000:ffff8801d880e140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1263f90 RBX: 0000000000000000 RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb142c3c
RBP: ffff8801d880e168 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: dffffc0000000000
R13: fffffbfff1263f8f R14: ffffffff8931fc80 R15: ffffffff8931fc78
 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 fc 31 89 e8 a1 73 0d fa 48 83 3d 79 43 7d 01 00 0f 84 63 fe ff ff e8 be 80 ca f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 ab 80 ca f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801d880e228 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02
RAX: ffff8801bb1423c0 RBX: 1ffffffff1263f8e RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: ffffffff87b4b902 RDI: 0000000000000293
RBP: ffff8801d880e2d0 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: 1ffff1003b101c4d
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3520 [inline]
 __alloc_pages_slowpath+0x2316/0x2dc0 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:945
 page_cache_read mm/filemap.c:2400 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2584
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3e9d/0x5bd0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420035e80 EFLAGS: 00010246
RAX: ffffffffffffff92 RBX: 0000000000000000 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cdef8
RBP: 000000c420035ec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420035eb8 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 4.19.0+ #306
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-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 run_ksoftirqd+0x5e/0x100 kernel/softirq.c:654
 smpboot_thread_fn+0x68b/0xa00 kernel/smpboot.c:164
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
CPU: 0 PID: 5561 Comm: syz-fuzzer Not tainted 4.19.0+ #306
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:125131 inactive_anon:197 isolated_anon:0
 active_file:7 inactive_file:18 isolated_file:0
 unevictable:0 dirty:7 writeback:0 unstable:0
 slab_reclaimable:10983 slab_unreclaimable:1396219
 mapped:49154 shmem:216 pagetables:983 bounce:0
 free:13664 free_pcp:94 free_cma:0
Call Trace:
Node 0 active_anon:500524kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:28kB writeback:0kB shmem:864kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 161792kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
lowmem_reserve[]: 0 2820 6324 6324
Node 0 DMA32 free:25064kB min:30060kB low:37572kB high:45084kB active_anon:32kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890788kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13684kB min:37352kB low:46688kB high:56024kB active_anon:500492kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5504kB pagetables:3932kB bounce:0kB free_pcp:376kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 1*8kB (M) 5*16kB (M) 4*32kB (UM) 4*64kB (UM) 4*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25064kB
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
Node 0 Normal: 1283*4kB (UME) 545*8kB (UME) 150*16kB (UME) 56*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13684kB
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
241 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
342286 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
ksoftirqd/1: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
ksoftirqd/1 cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 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
 </IRQ>
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:3706
Code: 00 e8 d5 d7 9a f9 e8 70 7a ca f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 2a 16 77 01 00 74 61 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 00 16
RSP: 0000:ffff8801d880e140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1263f90 RBX: 0000000000000000 RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb142c3c
RBP: ffff8801d880e168 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: dffffc0000000000
R13: fffffbfff1263f8f R14: ffffffff8931fc80 R15: ffffffff8931fc78
 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 fc 31 89 e8 a1 73 0d fa 48 83 3d 79 43 7d 01 00 0f 84 63 fe ff ff e8 be 80 ca f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 ab 80 ca f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00
RSP: 0000:ffff8801d880e228 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02
RAX: ffff8801bb1423c0 RBX: 1ffffffff1263f8e RCX: 1ffff10037628596
RDX: 0000000000000000 RSI: ffffffff87b4b902 RDI: 0000000000000293
RBP: ffff8801d880e2d0 R08: ffff8801bb142cb0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bb1423c0 R12: 1ffff1003b101c4d
R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3520 [inline]
 __alloc_pages_slowpath+0x2316/0x2dc0 mm/page_alloc.c:4241
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2107
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:945
 page_cache_read mm/filemap.c:2400 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2584
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6291
 __do_fault+0x100/0x6b0 mm/memory.c:2991
 do_read_fault mm/memory.c:3403 [inline]
 do_fault mm/memory.c:3529 [inline]
 handle_pte_fault mm/memory.c:3760 [inline]
 __handle_mm_fault+0x3e9d/0x5bd0 mm/memory.c:3884
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3921
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420035e80 EFLAGS: 00010246
RAX: ffffffffffffff92 RBX: 0000000000000000 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cdef8
RBP: 000000c420035ec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420035eb8 R11: 0000000000000246 R12: 0000000000430120
R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 4.19.0+ #306
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-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4396
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 run_ksoftirqd+0x5e/0x100 kernel/softirq.c:654
 smpboot_thread_fn+0x68b/0xa00 kernel/smpboot.c:164
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 5561 Comm: syz-fuzzer Not tainted 4.19.0+ #306
Mem-Info:
active_anon:125131 inactive_anon:197 isolated_anon:0
 active_file:7 inactive_file:18 isolated_file:0
 unevictable:0 dirty:7 writeback:0 unstable:0
 slab_reclaimable:10983 slab_unreclaimable:1396219
 mapped:49154 shmem:216 pagetables:983 bounce:0
 free:13664 free_pcp:94 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:500524kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:28kB writeback:0kB shmem:864kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 161792kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2820 6324 6324
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:25064kB min:30060kB low:37572kB high:45084kB active_anon:32kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890788kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3424
Node 0 Normal free:13684kB min:37352kB low:46688kB high:56024kB active_anon:500492kB inactive_anon:788kB active_file:28kB inactive_file:72kB unevictable:0kB writepending:0kB present:4718592kB managed:3588076kB mlocked:0kB kernel_stack:5504kB pagetables:3932kB bounce:0kB free_pcp:376kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 4*4kB (UM) 1*8kB (M) 5*16kB (M) 4*32kB (UM) 4*64kB (UM) 4*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB (UM) 3*2048kB (M) 3*4096kB (M) = 25064kB
Node 0 Normal: 1283*4kB (UME) 545*8kB (UME) 150*16kB (UME) 56*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13684kB
 __alloc_pages_slowpath+0x26aa/0x2dc0 mm/page_alloc.c:4303
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
241 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
342286 pages reserved
0 pages cma reserved

Crashes (19):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/10/27 17:56 upstream 345671ea0f92 8efba39a .config console log report ci-upstream-kasan-gce-root
2018/10/30 18:39 bpf d8fd9e106fbc 8dbb755a .config console log report ci-upstream-bpf-kasan-gce
2018/10/30 02:17 bpf d8fd9e106fbc 2f1090da .config console log report ci-upstream-bpf-kasan-gce
2018/10/25 17:24 net-old 4f3ebb04d05f a8292de9 .config console log report ci-upstream-net-this-kasan-gce
2018/10/18 15:11 bpf bd8be2cf8b69 d257b2d2 .config console log report ci-upstream-bpf-kasan-gce
2018/09/20 08:19 net-old cf5cca6e4cc4 7f125108 .config console log report ci-upstream-net-this-kasan-gce
2019/03/13 22:55 net-next-old d9862cfbe209 2881fc25 .config console log report ci-upstream-net-kasan-gce
2018/11/15 09:07 bpf-next 407be8d03e20 5f5f6d14 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/08 23:02 bpf-next bce6a14996f9 e85d2a61 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/31 03:20 bpf-next 44adbac8f721 4ccf7bb4 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/29 23:50 bpf-next 44adbac8f721 7df9db2e .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/27 23:53 bpf-next 44adbac8f721 8efba39a .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/11 19:18 net-next-old 9dffa76c2126 ba6ddb43 .config console log report ci-upstream-net-kasan-gce
2018/10/08 16:49 bpf-next a2046de99193 8b311eaf .config console log report ci-upstream-bpf-next-kasan-gce
2018/09/25 13:50 bpf-next 788758d1fe87 0e7547d7 .config console log report ci-upstream-bpf-next-kasan-gce
2018/09/24 09:47 bpf-next 788758d1fe87 e029c3e0 .config console log report ci-upstream-bpf-next-kasan-gce
2018/09/19 23:53 bpf-next 2dfd184abd38 7f125108 .config console log report ci-upstream-bpf-next-kasan-gce
2018/09/17 08:56 bpf-next 70e88c758a6b 7f125108 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/13 21:58 linux-next 442b8cea2477 5f5f6d14 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.