syzbot


INFO: rcu detected stall in ret_from_fork (2)

Status: closed as dup on 2019/01/02 16:31
Reported-by: syzbot+18a0562d80926b72d1a1@syzkaller.appspotmail.com
First crash: 1544d, last: 1506d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
INFO: rcu detected stall in ndisc_alloc_skb 1 1514d 1434d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in ret_from_fork 13 1546d 1548d 0/24 closed as invalid on 2018/09/11 09:41

Sample crash report:
CPU: 1 PID: 5342 Comm: syz-fuzzer Not tainted 4.19.0-rc7+ #66
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:
 <IRQ>
rcu: 	0-...!: (67 ticks this GP) idle=3d6/1/0x4000000000000004 softirq=33105/33105 fqs=6 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
rcu: 	
 (t=10621 jiffies g=43945 q=25)
rcu: rcu_preempt kthread starved for 9725 jiffies! g43945 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R
  running task    
22872    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 kthread+0x35a/0x420 kernel/kthread.c:246
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
NMI backtrace for cpu 0
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore+0x4a/0x52 arch/x86/include/asm/paravirt.h:788
Code: 48 c1 ea 03 80 3c 02 00 74 05 e8 e9 43 19 fa 48 83 3d 39 ed 88 01 00 75 07 e8 fa d3 d5 f9 0f 0b e8 f3 d3 d5 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 43 19 fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801d9b8e238 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d8526280 RBX: 0000000000000293 RCX: 1ffff1003b0a4d6e
RDX: 0000000000000000 RSI: ffffffff87a9055d RDI: 0000000000000293
RBP: ffff8801d9b8e240 R08: ffff8801d8526b70 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d8526280 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff8931f280
 dump_stack+0x26a/0x2b4 lib/dump_stack.c:118
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline]
 __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38f/0x5b0 mm/filemap.c:946
 page_cache_read mm/filemap.c:2385 [inline]
 filemap_fault+0x1594/0x25f0 mm/filemap.c:2569
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259
 __do_fault+0x100/0x6b0 mm/memory.c:3240
 do_read_fault mm/memory.c:3652 [inline]
 do_fault mm/memory.c:3752 [inline]
 handle_pte_fault mm/memory.c:3983 [inline]
 __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107
 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144
 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001f6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003597157e RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cd940
RBP: 000000c42001f6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001f6d8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000000000001f R14: 0000000000b7e140 R15: 0000000000004269
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 19524 Comm: syz-executor0 Not tainted 4.19.0-rc7+ #66
Mem-Info:
active_anon:29560 inactive_anon:112 isolated_anon:0
 active_file:13 inactive_file:14 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8036 slab_unreclaimable:1496664
 mapped:16395 shmem:119 pagetables:491 bounce:0
 free:13798 free_pcp:488 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:118240kB inactive_anon:448kB active_file:52kB inactive_file:56kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:65580kB dirty:0kB writeback:0kB shmem:476kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 12288kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]:
 0
 2819
 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101
 6323 6323
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62
Node 0 
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
DMA32 free:25288kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:8kB local_pcp:0kB free_cma:0kB
 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline]
 rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340
lowmem_reserve[]: 0
 0
 print_cpu_stall.cold.78+0x2d3/0x524 kernel/rcu/tree.c:1478
 3503
 3503
Node 0 
Normal free:13996kB min:37352kB low:46688kB high:56024kB active_anon:118240kB inactive_anon:448kB active_file:52kB inactive_file:56kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5280kB pagetables:1964kB bounce:0kB free_pcp:1944kB local_pcp:1348kB free_cma:0kB
lowmem_reserve[]:
 0 0
 0 0
Node 0 
DMA: 1*4kB 
(U) 
 check_cpu_stall kernel/rcu/tree.c:1550 [inline]
 __rcu_pending kernel/rcu/tree.c:3276 [inline]
 rcu_pending kernel/rcu/tree.c:3319 [inline]
 rcu_check_callbacks+0xfd9/0x1990 kernel/rcu/tree.c:2665
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: 
6*4kB 
(MH) 
0*8kB 3*16kB 
(MH) 
2*32kB (M) 
5*64kB (MH) 
4*128kB (MH) 
3*256kB (M) 
4*512kB (MH) 
3*1024kB (MH) 
3*2048kB (M) 
3*4096kB (M) 
= 25288kB
Node 0 
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
Normal: 9*4kB 
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
(ME) 
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
37*8kB (UM) 
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
34*16kB (UMH) 
36*32kB (UMH) 
19*64kB 
(MH) 11*128kB 
(UMH) 
5*256kB 
(UM) 
4*512kB 
(UH) 
2*1024kB (H) 
2*2048kB (MH) 
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
0*4096kB = 14124kB
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054
Node 0 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
146 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
342307 pages reserved
0 pages cma reserved
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642
Code: 40 7e 0f 85 32 ff ff ff e8 f5 ac 3e ff e9 28 ff ff ff e8 1c 14 c3 ff 48 83 3d ac 21 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 6a a1
RSP: 0000:ffff8801dae07450 EFLAGS: 00000286
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 ORIG_RAX: ffffffffffffff13
syz-fuzzer cpuset=
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff10033c46d51
/
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8801dae074c0 R08: ffff88019e236a88 R09: 0000000000000002
 mems_allowed=0
R10: 0000000000000000 R11: ffff88019e2361c0 R12: ffff8801d9a04040
R13: ffff8801d9a04040 R14: 0000000000000000 R15: 0000000000000286
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661
Code: 3f 7e 0f 85 32 ff ff ff e8 83 78 3e ff e9 28 ff ff ff e8 aa df c2 ff 48 83 3d 3a ed 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 6a a1
RSP: 0000:ffff8801878bf4a8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88019e236a40 RDI: 0000000000000286
RBP: ffff8801878bf520 R08: ffff88019e2361c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800dc0
R13: ffff8801da800dc0 R14: 0000000000000000 R15: 0000000000000286
 __do_kmalloc_node mm/slab.c:3681 [inline]
 __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696
 __kmalloc_reserve.isra.39+0xcc/0xe0 net/core/skbuff.c:145
 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460
 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5128
 __bpf_try_make_writable net/core/filter.c:1633 [inline]
 bpf_try_make_writable net/core/filter.c:1639 [inline]
 bpf_try_make_head_writable net/core/filter.c:1647 [inline]
 ____bpf_clone_redirect net/core/filter.c:2084 [inline]
 bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2062
 bpf_prog_a481c1313990ee2c+0x6f6/0x1000
CPU: 1 PID: 5342 Comm: syz-fuzzer Not tainted 4.19.0-rc7+ #66
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
syz-executor0 cpuset=
syz0
 mems_allowed=0
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore+0x4a/0x52 arch/x86/include/asm/paravirt.h:788
Code: 48 c1 ea 03 80 3c 02 00 74 05 e8 e9 43 19 fa 48 83 3d 39 ed 88 01 00 75 07 e8 fa d3 d5 f9 0f 0b e8 f3 d3 d5 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 43 19 fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801d9b8e238 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d8526280 RBX: 0000000000000293 RCX: 1ffff1003b0a4d6e
RDX: 0000000000000000 RSI: ffffffff87a9055d RDI: 0000000000000293
RBP: ffff8801d9b8e240 R08: ffff8801d8526b70 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d8526280 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff8931f280
 dump_stack+0x26a/0x2b4 lib/dump_stack.c:118
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline]
 __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38f/0x5b0 mm/filemap.c:946
 page_cache_read mm/filemap.c:2385 [inline]
 filemap_fault+0x1594/0x25f0 mm/filemap.c:2569
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259
 __do_fault+0x100/0x6b0 mm/memory.c:3240
 do_read_fault mm/memory.c:3652 [inline]
 do_fault mm/memory.c:3752 [inline]
 handle_pte_fault mm/memory.c:3983 [inline]
 __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107
 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144
 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001f6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003597157e RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cd940
RBP: 000000c42001f6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001f6d8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000000000001f R14: 0000000000b7e140 R15: 0000000000004269
CPU: 0 PID: 19524 Comm: syz-executor0 Not tainted 4.19.0-rc7+ #66
Mem-Info:
active_anon:29560 inactive_anon:112 isolated_anon:0
 active_file:13 inactive_file:14 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8036 slab_unreclaimable:1496664
 mapped:16395 shmem:119 pagetables:491 bounce:0
 free:13798 free_pcp:488 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:118240kB inactive_anon:448kB active_file:52kB inactive_file:56kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:65580kB dirty:0kB writeback:0kB shmem:476kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 12288kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 
 <IRQ>
DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
lowmem_reserve[]: 0
 2819
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
 6323
 6323
Node 0 
DMA32 free:25288kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:8kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 0
 3503
 3503
Node 0 
Normal free:13996kB min:37352kB low:46688kB high:56024kB active_anon:118240kB inactive_anon:448kB active_file:52kB inactive_file:56kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5280kB pagetables:1964kB bounce:0kB free_pcp:1944kB local_pcp:1348kB 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) 
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
= 15908kB
Node 0 
DMA32: 
6*4kB 
(MH) 
0*8kB 
3*16kB 
(MH) 
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
2*32kB (M) 
5*64kB (MH) 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
4*128kB (MH) 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
3*256kB 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
(M) 
4*512kB 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
(MH) 
3*1024kB (MH) 
3*2048kB (M) 
3*4096kB 
(M) 
= 25288kB
Node 0 
Normal: 9*4kB 
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
(ME) 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
37*8kB (UM) 
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
34*16kB 
(UMH) 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
36*32kB 
(UMH) 
19*64kB 
(MH) 
11*128kB 
(UMH) 
5*256kB 
(UM) 
4*512kB (UH) 
2*1024kB (H) 
2*2048kB (MH) 
0*4096kB 
= 14124kB
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
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
146 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
342307 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=
/
 mems_allowed=0
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661
Code: 3f 7e 0f 85 32 ff ff ff e8 83 78 3e ff e9 28 ff ff ff e8 aa df c2 ff 48 83 3d 3a ed 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 6a a1
RSP: 0000:ffff8801878bf4a8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88019e236a40 RDI: 0000000000000286
RBP: ffff8801878bf520 R08: ffff88019e2361c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800dc0
R13: ffff8801da800dc0 R14: 0000000000000000 R15: 0000000000000286
 __do_kmalloc_node mm/slab.c:3681 [inline]
 __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696
 __kmalloc_reserve.isra.39+0xcc/0xe0 net/core/skbuff.c:145
 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460
 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5128
 __bpf_try_make_writable net/core/filter.c:1633 [inline]
 bpf_try_make_writable net/core/filter.c:1639 [inline]
 bpf_try_make_head_writable net/core/filter.c:1647 [inline]
 ____bpf_clone_redirect net/core/filter.c:2084 [inline]
 bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2062
 bpf_prog_a481c1313990ee2c+0x6f6/0x1000
CPU: 1 PID: 5342 Comm: syz-fuzzer Not tainted 4.19.0-rc7+ #66
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
syz-executor0 cpuset=
syz0
 mems_allowed=0
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore+0x4a/0x52 arch/x86/include/asm/paravirt.h:788
Code: 48 c1 ea 03 80 3c 02 00 74 05 e8 e9 43 19 fa 48 83 3d 39 ed 88 01 00 75 07 e8 fa d3 d5 f9 0f 0b e8 f3 d3 d5 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 43 19 fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801d9b8e238 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d8526280 RBX: 0000000000000293 RCX: 1ffff1003b0a4d6e
RDX: 0000000000000000 RSI: ffffffff87a9055d RDI: 0000000000000293
RBP: ffff8801d9b8e240 R08: ffff8801d8526b70 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d8526280 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff8931f280
 dump_stack+0x26a/0x2b4 lib/dump_stack.c:118
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline]
 __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38f/0x5b0 mm/filemap.c:946
 page_cache_read mm/filemap.c:2385 [inline]
 filemap_fault+0x1594/0x25f0 mm/filemap.c:2569
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259
 __do_fault+0x100/0x6b0 mm/memory.c:3240
 do_read_fault mm/memory.c:3652 [inline]
 do_fault mm/memory.c:3752 [inline]
 handle_pte_fault mm/memory.c:3983 [inline]
 __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107
 handle_mm_fault+0x54f/0xc70 mm/memory.c:4144
 __do_page_fault+0x67d/0xed0 arch/x86/mm/fault.c:1395
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1470
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001f6a0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003597157e RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014cd940
RBP: 000000c42001f6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001f6d8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000000000001f R14: 0000000000b7e140 R15: 0000000000004269
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 19524 Comm: syz-executor0 Not tainted 4.19.0-rc7+ #66
Mem-Info:
active_anon:29560 inactive_anon:112 isolated_anon:0
 active_file:13 inactive_file:14 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8036 slab_unreclaimable:1496664
 mapped:16395 shmem:119 pagetables:491 bounce:0
 free:13798 free_pcp:488 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:118240kB inactive_anon:448kB active_file:52kB inactive_file:56kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:65580kB dirty:0kB writeback:0kB shmem:476kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 12288kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 
 <IRQ>
DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
lowmem_reserve[]: 0
 2819
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
 6323 6323
Node 0 
DMA32 free:25288kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:8kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0
 0
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 3503
 3503
Node 0 
Normal free:13996kB min:37352kB low:46688kB high:56024kB active_anon:118240kB inactive_anon:448kB active_file:52kB inactive_file:56kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5280kB pagetables:1964kB bounce:0kB free_pcp:1944kB local_pcp:1348kB 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
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
Node 0 
DMA32: 
6*4kB 
(MH) 0*8kB 
3*16kB (MH) 
2*32kB 
(M) 5*64kB 
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
(MH) 
4*128kB (MH) 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
3*256kB 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
(M) 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
4*512kB 
(MH) 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
3*1024kB (MH) 
3*2048kB (M) 
3*4096kB (M) 
= 25288kB
Node 0 
Normal: 
9*4kB 
(ME) 
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
37*8kB 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
(UM) 34*16kB 
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
(UMH) 36*32kB 
(UMH) 19*64kB 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
(MH) 
11*128kB 
(UMH) 
5*256kB 
(UM) 4*512kB 
(UH) 
2*1024kB 
(H) 
2*2048kB 
(MH) 0*4096kB 
= 14124kB
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
146 total pagecache pages
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
0 pages in swap cache
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342307 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=
/
 mems_allowed=0
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node_trace+0x249/0x740 mm/slab.c:3661
Code: 3f 7e 0f 85 32 ff ff ff e8 83 78 3e ff e9 28 ff ff ff e8 aa df c2 ff 48 83 3d 3a ed 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 e9 c1 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 6a a1
RSP: 0000:ffff8801878bf4a8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88019e236a40 RDI: 0000000000000286
RBP: ffff8801878bf520 R08: ffff88019e2361c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801da800dc0
R13: ffff8801da800dc0 R14: 0000000000000000 R15: 0000000000000286
 __do_kmalloc_node mm/slab.c:3681 [inline]
 __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696
 __kmalloc_reserve.isra.39+0xcc/0xe0 net/core/skbuff.c:145
 pskb_expand_head+0x230/0x10f0 net/core/skbuff.c:1460
 skb_ensure_writable+0x3dd/0x640 net/core/skbuff.c:5128
 __bpf_try_make_writable net/core/filter.c:1633 [inline]
 bpf_try_make_writable net/core/filter.c:1639 [inline]
 bpf_try_make_head_writable net/core/filter.c:1647 [inline]
 ____bpf_clone_redirect net/core/filter.c:2084 [inline]
 bpf_clone_redirect+0x14a/0x490 net/core/filter.c:2062
 bpf_prog_a481c1313990ee2c+0x6f6/0x1000
CPU: 1 PID: 5342 Comm: syz-fuzzer Not tainted 4.19.0-rc7+ #66
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 <IRQ>
syz-executor0 cpuset=
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
syz0
 mems_allowed=0
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3819
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore+0x4a/0x52 arch/x86/include/asm/paravirt.h:788
Code: 48 c1 ea 03 80 3c 02 00 74 05 e8 e9 43 19 fa 48 83 3d 39 ed 88 01 00 75 07 e8 fa d3 d5 f9 0f 0b e8 f3 d3 d5 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 43 19 fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801d9b8e238 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801d8526280 RBX: 0000000000000293 RCX: 1ffff1003b0a4d6e
RDX: 0000000000000000 RSI: ffffffff87a9055d RDI: 0000000000000293
RBP: ffff8801d9b8e240 R08: ffff8801d8526b70 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801d8526280 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff8931f280
 dump_stack+0x26a/0x2b4 lib/dump_stack.c:118
 dump_header+0x27b/0xf72 mm/oom_kill.c:441
 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline]
 __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38f/0x5b0 mm/filemap.c:946
 page_cache_read mm/filemap.c:2385 [inline]
 filemap_fault+0x1594/0x25f0 mm/filemap.c:2569
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259
 __do_fault+0x100/0x6b0 mm/memory.c:3240
 do_read_fault mm/memory.c:3652 [inline]
 do_fault mm/memory.c:3752 [inline]
 handle_pte_fault mm/memory.c:3983 [inline]
 __handle_mm_fault+0x3709/0x53e0 mm/memory.c:4107

Crashes (12):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-bpf-kasan-gce 2018/10/19 20:50 bpf bd8be2cf8b69 ecb386fe .config log report
ci-upstream-bpf-kasan-gce 2018/10/19 16:57 bpf bd8be2cf8b69 9aba67b5 .config log report
ci-upstream-net-this-kasan-gce 2018/09/24 02:55 net 16fdf8ba9839 28d9ac76 .config log report
ci-upstream-bpf-kasan-gce 2018/09/23 16:49 bpf fad0c40fab14 37079712 .config log report
ci-upstream-net-this-kasan-gce 2018/09/19 05:30 net 5211da9ca526 7f125108 .config log report
ci-upstream-bpf-next-kasan-gce 2018/10/17 05:18 bpf-next 44d520eb17cd 1ba7fd7e .config log report
ci-upstream-bpf-next-kasan-gce 2018/10/03 19:33 bpf-next 33d9a7fd6756 8b311eaf .config log report
ci-upstream-bpf-next-kasan-gce 2018/09/26 20:09 bpf-next d0e13a1488ad 455b6354 .config log report
ci-upstream-bpf-next-kasan-gce 2018/09/26 19:22 bpf-next d0e13a1488ad 455b6354 .config log report
ci-upstream-bpf-next-kasan-gce 2018/09/25 06:44 bpf-next 788758d1fe87 0e7547d7 .config log report
ci-upstream-bpf-next-kasan-gce 2018/09/13 22:15 bpf-next 1edb6e035eb7 19e9088b .config log report
ci-upstream-bpf-next-kasan-gce 2018/09/12 08:28 bpf-next 2e2a0c961a87 3c88136c .config log report
* Struck through repros no longer work on HEAD.