syzbot


INFO: rcu detected stall in ret_from_fork

Status: closed as invalid on 2018/09/11 09:41
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 1602d, last: 1599d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in ret_from_fork (2) 12 1560d 1593d 0/24 closed as dup on 2019/01/02 16:31

Sample crash report:
CPU: 1 PID: 5248 Comm: rsyslogd Not tainted 4.19.0-rc2+ #51
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-...!: (117 ticks this GP) idle=6f2/1/0x4000000000000004 softirq=12182/12182 fqs=5 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
rcu: 	
 (t=10568 jiffies g=13313 q=7)
rcu: rcu_preempt kthread starved for 9827 jiffies! g13313 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R
  running task    
23064    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+0x3c0/0x6f0 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 3a 0a fa 48 83 3d e9 31 9a 01 00 75 07 e8 6a d7 c6 f9 0f 0b e8 63 d7 c6 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 3a 0a fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801be1ae7e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801bd8dc600 RBX: 0000000000000293 RCX: 1ffff10037b1b9d9
RDX: 0000000000000000 RSI: ffffffff87b7f7cd RDI: 0000000000000293
RBP: ffff8801be1ae7e8 R08: ffff8801bd8dcec8 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bd8dc600 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff895229a0
 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:952
 out_of_memory+0xa86/0x14c0 mm/oom_kill.c:1112
 __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 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
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 syslog_print kernel/printk/printk.c:1298 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1466
 kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40
 proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231
 __vfs_read+0x117/0x9b0 fs/read_write.c:416
 vfs_read+0x17f/0x3c0 fs/read_write.c:452
 ksys_read+0x101/0x260 fs/read_write.c:578
 __do_sys_read fs/read_write.c:588 [inline]
 __se_sys_read fs/read_write.c:586 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:586
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa891c8f1fd
Code: Bad RIP value.
RSP: 002b:00007fa88f22ee30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000012d0650 RCX: 00007fa891c8f1fd
RDX: 0000000000000fff RSI: 00007fa890a635a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00000000012bb260 R09: 0000000000000000
R10: 6b205d3637303536 R11: 0000000000000293 R12: 000000000065e420
R13: 00007fa88f22f9c0 R14: 00007fa8922d4040 R15: 0000000000000003
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8848 Comm: syz-executor3 Not tainted 4.19.0-rc2+ #51
Mem-Info:
active_anon:40274 inactive_anon:3706 isolated_anon:0
 active_file:16 inactive_file:17 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8863 slab_unreclaimable:1468989
 mapped:41138 shmem:4475 pagetables:579 bounce:0
 free:13636 free_pcp:360 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:164552kB dirty:0kB writeback:0kB shmem:17900kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 147456kB 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
 2817 6321
 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101
 6321
Node 0 
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62
DMA32 free:24688kB min:30048kB low:37560kB high:45072kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2889304kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:464kB local_pcp:248kB free_cma:0kB
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
lowmem_reserve[]: 0
 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline]
 rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340
 0
 3503
 print_cpu_stall.cold.78+0x2d3/0x524 kernel/rcu/tree.c:1478
 3503
Node 0 
Normal free:13948kB min:37364kB low:46704kB high:56044kB active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB writepending:0kB present:4718592kB managed:3587728kB mlocked:0kB kernel_stack:5344kB pagetables:2316kB bounce:0kB free_pcp:976kB local_pcp:728kB 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: 
2*4kB 
(M) 
1*8kB (U) 
4*16kB (UM) 
1*32kB 
(M) 2*64kB 
(M) 
3*128kB (M) 
2*256kB 
(M) 4*512kB 
(UM) 
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
3*1024kB (M) 
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
3*2048kB (UM) 
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
3*4096kB (M) 
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
= 24688kB
Node 0 
Normal: 1055*4kB 
(UMEH) 
488*8kB (UMEH) 
184*16kB (UMEH) 
61*32kB (UMEH) 
1*64kB 
(H) 1*128kB 
(H) 1*256kB 
(U) 
1*512kB (U) 
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
0*1024kB 0*2048kB 
 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
0*4096kB = 13980kB
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
4508 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
342744 pages reserved
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
0 pages cma reserved
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
rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Code: 40 7e 0f 85 32 ff ff ff e8 a5 c3 3e ff e9 28 ff ff ff e8 bc 20 c3 ff 48 83 3d 5c 6f 90 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 9a 42
rsyslogd cpuset=
RSP: 0000:ffff8801dae07450 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
/
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff1003b1321c1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000282
 mems_allowed=0
RBP: ffff8801dae074c0 R08: ffff8801d8990e08 R09: 0000000000000002
R10: 0000000000000000 R11: ffff8801d8990540 R12: ffff8801d9be7680
R13: ffff8801d9be7680 R14: 0000000000000000 R15: 0000000000000282
 __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+0x3c0/0x6f0 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 mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 06 a4 3e ff e9 c5 fe ff ff e8 1d 01 c3 ff 48 83 3d bd 4f 90 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 9a 42
RSP: 0000:ffff8801a03d7748 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801d8990dc0 RDI: 0000000000000282
RBP: ffff8801a03d77b0 R08: ffff8801d8990540 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1283
 ____bpf_clone_redirect net/core/filter.c:2075 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062
 bpf_prog_bebbfe2050753572+0xda0/0x1000
CPU: 1 PID: 5248 Comm: rsyslogd Not tainted 4.19.0-rc2+ #51
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-executor3: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 <IRQ>
syz-executor3 cpuset=
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
syz3
 mems_allowed=0
 warn_alloc.cold.118+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+0x3c0/0x6f0 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 3a 0a fa 48 83 3d e9 31 9a 01 00 75 07 e8 6a d7 c6 f9 0f 0b e8 63 d7 c6 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 3a 0a fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801be1ae7e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801bd8dc600 RBX: 0000000000000293 RCX: 1ffff10037b1b9d9
RDX: 0000000000000000 RSI: ffffffff87b7f7cd RDI: 0000000000000293
RBP: ffff8801be1ae7e8 R08: ffff8801bd8dcec8 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bd8dc600 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff895229a0
 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:952
 out_of_memory+0xa86/0x14c0 mm/oom_kill.c:1112
 __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 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
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 syslog_print kernel/printk/printk.c:1298 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1466
 kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40
 proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231
 __vfs_read+0x117/0x9b0 fs/read_write.c:416
 vfs_read+0x17f/0x3c0 fs/read_write.c:452
 ksys_read+0x101/0x260 fs/read_write.c:578
 __do_sys_read fs/read_write.c:588 [inline]
 __se_sys_read fs/read_write.c:586 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:586
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa891c8f1fd
Code: Bad RIP value.
RSP: 002b:00007fa88f22ee30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000012d0650 RCX: 00007fa891c8f1fd
RDX: 0000000000000fff RSI: 00007fa890a635a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00000000012bb260 R09: 0000000000000000
R10: 6b205d3637303536 R11: 0000000000000293 R12: 000000000065e420
R13: 00007fa88f22f9c0 R14: 00007fa8922d4040 R15: 0000000000000003
CPU: 0 PID: 8848 Comm: syz-executor3 Not tainted 4.19.0-rc2+ #51
Mem-Info:
active_anon:40274 inactive_anon:3706 isolated_anon:0
 active_file:16 inactive_file:17 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8863 slab_unreclaimable:1468989
 mapped:41138 shmem:4475 pagetables:579 bounce:0
 free:13636 free_pcp:360 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:164552kB dirty:0kB writeback:0kB shmem:17900kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 147456kB 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[]:
 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426
 0
 2817
 6321
 6321
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
Node 0 
DMA32 free:24688kB min:30048kB low:37560kB high:45072kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2889304kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:464kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0
 0
 3503
 3503
Node 0 
Normal free:13948kB min:37364kB low:46704kB high:56044kB active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB writepending:0kB present:4718592kB managed:3587728kB mlocked:0kB kernel_stack:5344kB pagetables:2316kB bounce:0kB free_pcp:976kB local_pcp:728kB 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: 2*4kB 
(M) 
1*8kB 
(U) 4*16kB 
(UM) 
1*32kB 
 __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
(M) 
2*64kB 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
(M) 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
3*128kB (M) 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
2*256kB 
(M) 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
4*512kB 
(UM) 3*1024kB 
(M) 
3*2048kB (UM) 
3*4096kB 
(M) = 24688kB
Node 0 
Normal: 
1055*4kB 
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
(UMEH) 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
488*8kB 
 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819
(UMEH) 
184*16kB 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
(UMEH) 61*32kB 
(UMEH) 
1*64kB (H) 
1*128kB 
(H) 
1*256kB (U) 
1*512kB 
(U) 
0*1024kB 
0*2048kB 
0*4096kB 
= 13980kB
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
4508 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
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342744 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
rsyslogd 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 mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 06 a4 3e ff e9 c5 fe ff ff e8 1d 01 c3 ff 48 83 3d bd 4f 90 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 9a 42
RSP: 0000:ffff8801a03d7748 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801d8990dc0 RDI: 0000000000000282
RBP: ffff8801a03d77b0 R08: ffff8801d8990540 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1283
 ____bpf_clone_redirect net/core/filter.c:2075 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062
 bpf_prog_bebbfe2050753572+0xda0/0x1000
CPU: 1 PID: 5248 Comm: rsyslogd Not tainted 4.19.0-rc2+ #51
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-executor3: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 <IRQ>
syz-executor3 cpuset=
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
syz3
 mems_allowed=0
 warn_alloc.cold.118+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+0x3c0/0x6f0 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 3a 0a fa 48 83 3d e9 31 9a 01 00 75 07 e8 6a d7 c6 f9 0f 0b e8 63 d7 c6 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 3a 0a fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801be1ae7e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801bd8dc600 RBX: 0000000000000293 RCX: 1ffff10037b1b9d9
RDX: 0000000000000000 RSI: ffffffff87b7f7cd RDI: 0000000000000293
RBP: ffff8801be1ae7e8 R08: ffff8801bd8dcec8 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bd8dc600 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff895229a0
 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:952
 out_of_memory+0xa86/0x14c0 mm/oom_kill.c:1112
 __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 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
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 syslog_print kernel/printk/printk.c:1298 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1466
 kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40
 proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231
 __vfs_read+0x117/0x9b0 fs/read_write.c:416
 vfs_read+0x17f/0x3c0 fs/read_write.c:452
 ksys_read+0x101/0x260 fs/read_write.c:578
 __do_sys_read fs/read_write.c:588 [inline]
 __se_sys_read fs/read_write.c:586 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:586
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa891c8f1fd
Code: Bad RIP value.
RSP: 002b:00007fa88f22ee30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000012d0650 RCX: 00007fa891c8f1fd
RDX: 0000000000000fff RSI: 00007fa890a635a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00000000012bb260 R09: 0000000000000000
R10: 6b205d3637303536 R11: 0000000000000293 R12: 000000000065e420
R13: 00007fa88f22f9c0 R14: 00007fa8922d4040 R15: 0000000000000003
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8848 Comm: syz-executor3 Not tainted 4.19.0-rc2+ #51
Mem-Info:
active_anon:40274 inactive_anon:3706 isolated_anon:0
 active_file:16 inactive_file:17 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8863 slab_unreclaimable:1468989
 mapped:41138 shmem:4475 pagetables:579 bounce:0
 free:13636 free_pcp:360 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Node 0 active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:164552kB dirty:0kB writeback:0kB shmem:17900kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 147456kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
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
 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426
 2817 6321
 6321
Node 0 
DMA32 free:24688kB min:30048kB low:37560kB high:45072kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2889304kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:464kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 0 3503
 3503
Node 0 
Normal free:13948kB min:37364kB low:46704kB high:56044kB active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB writepending:0kB present:4718592kB managed:3587728kB mlocked:0kB kernel_stack:5344kB pagetables:2316kB bounce:0kB free_pcp:976kB local_pcp:728kB free_cma:0kB
lowmem_reserve[]:
 0
 0 0
 0
Node 0 
DMA: 
1*4kB 
(U) 0*8kB 
0*16kB 
1*32kB (U) 
2*64kB 
(U) 1*128kB 
(U) 
1*256kB (U) 
0*512kB 
1*1024kB 
(U) 1*2048kB 
(M) 3*4096kB 
(M) 
= 15908kB
Node 0 
DMA32: 2*4kB 
(M) 1*8kB 
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
(U) 
4*16kB 
(UM) 
1*32kB 
(M) 
2*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
(M) 
3*128kB (M) 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
2*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 
(UM) 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
3*1024kB 
(M) 
3*2048kB 
(UM) 
3*4096kB 
(M) 
= 24688kB
Node 0 
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
Normal: 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
1055*4kB 
 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819
(UMEH) 
488*8kB 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
(UMEH) 
184*16kB (UMEH) 
61*32kB 
(UMEH) 
1*64kB 
(H) 1*128kB 
(H) 1*256kB 
(U) 1*512kB 
(U) 0*1024kB 
0*2048kB 0*4096kB 
= 13980kB
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
4508 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
342744 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
rsyslogd 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 mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 06 a4 3e ff e9 c5 fe ff ff e8 1d 01 c3 ff 48 83 3d bd 4f 90 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 9a 42
RSP: 0000:ffff8801a03d7748 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801d8990dc0 RDI: 0000000000000282
RBP: ffff8801a03d77b0 R08: ffff8801d8990540 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d9be7680 R14: ffff8801d9be7680 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1283
 ____bpf_clone_redirect net/core/filter.c:2075 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2062
 bpf_prog_bebbfe2050753572+0xda0/0x1000
CPU: 1 PID: 5248 Comm: rsyslogd Not tainted 4.19.0-rc2+ #51
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-executor3: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 <IRQ>
syz-executor3 cpuset=
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
syz3
 mems_allowed=0
 warn_alloc.cold.118+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+0x3c0/0x6f0 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 3a 0a fa 48 83 3d e9 31 9a 01 00 75 07 e8 6a d7 c6 f9 0f 0b e8 63 d7 c6 f9 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d c3 4c 89 45 d0 e8 9d 3a 0a fa 4c 8b 45 d0 e9
RSP: 0000:ffff8801be1ae7e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801bd8dc600 RBX: 0000000000000293 RCX: 1ffff10037b1b9d9
RDX: 0000000000000000 RSI: ffffffff87b7f7cd RDI: 0000000000000293
RBP: ffff8801be1ae7e8 R08: ffff8801bd8dcec8 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801bd8dc600 R12: 0000000000000293
R13: 0000000000000200 R14: 0000000000000001 R15: ffffffff895229a0
 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:952
 out_of_memory+0xa86/0x14c0 mm/oom_kill.c:1112
 __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 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
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 syslog_print kernel/printk/printk.c:1298 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1466
 kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40
 proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231
 __vfs_read+0x117/0x9b0 fs/read_write.c:416
 vfs_read+0x17f/0x3c0 fs/read_write.c:452
 ksys_read+0x101/0x260 fs/read_write.c:578
 __do_sys_read fs/read_write.c:588 [inline]
 __se_sys_read fs/read_write.c:586 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:586
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa891c8f1fd
Code: Bad RIP value.
RSP: 002b:00007fa88f22ee30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000012d0650 RCX: 00007fa891c8f1fd
RDX: 0000000000000fff RSI: 00007fa890a635a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00000000012bb260 R09: 0000000000000000
R10: 6b205d3637303536 R11: 0000000000000293 R12: 000000000065e420
R13: 00007fa88f22f9c0 R14: 00007fa8922d4040 R15: 0000000000000003
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 8848 Comm: syz-executor3 Not tainted 4.19.0-rc2+ #51
Mem-Info:
active_anon:40274 inactive_anon:3706 isolated_anon:0
 active_file:16 inactive_file:17 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:8863 slab_unreclaimable:1468989
 mapped:41138 shmem:4475 pagetables:579 bounce:0
 free:13636 free_pcp:360 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:164552kB dirty:0kB writeback:0kB shmem:17900kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 147456kB 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 2817
 warn_alloc.cold.118+0xb7/0x1bd mm/page_alloc.c:3426
 6321
 6321
Node 0 
DMA32 free:24688kB min:30048kB low:37560kB high:45072kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2889304kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:464kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 0 3503
 3503
Node 0 
Normal free:13948kB min:37364kB low:46704kB high:56044kB active_anon:161096kB inactive_anon:14824kB active_file:64kB inactive_file:68kB unevictable:0kB writepending:0kB present:4718592kB managed:3587728kB mlocked:0kB kernel_stack:5344kB pagetables:2316kB bounce:0kB free_pcp:976kB local_pcp:728kB 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: 2*4kB 
(M) 1*8kB 
(U) 
4*16kB 
(UM) 1*32kB 
(M) 
2*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
(M) 3*128kB 
(M) 2*256kB 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
(M) 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
4*512kB (UM) 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
3*1024kB (M) 
3*2048kB 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
(UM) 
3*4096kB (M) 
= 24688kB
Node 0 Normal: 
1055*4kB 
(UMEH) 
488*8kB (UMEH) 
184*16kB (UMEH) 
 alloc_skb include/linux/skbuff.h:995 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
61*32kB 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
(UMEH) 
 addrconf_rs_timer+0x3c0/0x6f0 net/ipv6/addrconf.c:3819
1*64kB 
(H) 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
1*128kB 
(H) 
1*256kB (U) 
1*512kB (U) 
0*1024kB 
0*2048kB 
0*4096kB 
= 13980kB
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
4508 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
342744 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
rsyslogd cpuset=
/

Crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-bpf-kasan-gce 2018/09/10 13:34 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/10 06:40 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/09 14:41 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/09 04:50 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/09 04:34 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/09 01:28 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/08 18:22 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/08 08:28 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-kasan-gce 2018/09/08 05:35 bpf 28619527b8a7 6b5120a4 .config console log report
ci-upstream-bpf-next-kasan-gce 2018/09/09 23:38 bpf-next f6f3bac08ff9 6b5120a4 .config console log report
ci-upstream-bpf-next-kasan-gce 2018/09/09 18:34 bpf-next f6f3bac08ff9 6b5120a4 .config console log report
ci-upstream-bpf-next-kasan-gce 2018/09/09 17:24 bpf-next f6f3bac08ff9 6b5120a4 .config console log report
ci-upstream-bpf-next-kasan-gce 2018/09/09 04:09 bpf-next f6f3bac08ff9 6b5120a4 .config console log report
* Struck through repros no longer work on HEAD.