syzbot


INFO: rcu detected stall in ndisc_alloc_skb

Status: auto-closed as invalid on 2019/04/10 04:51
Reported-by: syzbot+ea7d9cb314b4ab49a18a@syzkaller.appspotmail.com
First crash: 1454d, last: 1454d
duplicates (14):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
INFO: rcu detected stall in proc_reg_read 6 1384d 1464d 0/24 closed as dup on 2019/01/02 16:24
INFO: rcu detected stall in br_multicast_port_group_expired (2) 5 1435d 1475d 0/24 closed as dup on 2019/01/02 16:28
INFO: rcu detected stall in addrconf_rs_timer 38 1385d 1481d 0/24 closed as dup on 2019/01/02 16:33
INFO: rcu detected stall in shmem_fault 13 1296d 1456d 0/24 closed as dup on 2019/01/02 16:58
INFO: rcu detected stall in discover_timer 19 1302d 1479d 0/24 closed as dup on 2019/01/02 16:30
INFO: rcu detected stall in __run_timers (2) 58 1359d 1483d 0/24 closed as dup on 2019/01/02 16:40
INFO: rcu detected stall in kthread (2) 11 1392d 1481d 0/24 closed as dup on 2019/01/02 16:35
INFO: rcu detected stall in ext4_filemap_fault 109 1311d 1482d 0/24 closed as dup on 2019/01/02 16:36
INFO: rcu detected stall in call_timer_fn 2 1453d 1466d 0/24 closed as dup on 2019/01/02 16:26
INFO: rcu detected stall in filemap_fault 1 1459d 1457d 0/24 closed as dup on 2019/01/02 16:20
INFO: rcu detected stall in show_free_areas 1 1457d 1457d 0/24 closed as dup on 2019/01/02 16:21
INFO: rcu detected stall in ret_from_fork (2) 12 1447d 1480d 0/24 closed as dup on 2019/01/02 16:31
INFO: rcu detected stall in run_timer_softirq (2) 27 1402d 1482d 0/24 closed as dup on 2019/01/02 16:38
INFO: rcu detected stall in bpf_prog_ADDR 1 1485d 1483d 0/24 closed as dup on 2019/01/02 16:39

Sample crash report:
CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
rcu: 	(detected by 0, t=10712 jiffies, g=90369, q=135)
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
rcu: All QSes seen, last rcu_preempt kthread activity 10548 (4295003843-4294993295), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor0   R
  running task    
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
22896  7592   5826 0x8010000c
Call Trace:
 <IRQ>
 sched_show_task.cold.83+0x2b6/0x30a kernel/sched/core.c:5296
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
 print_other_cpu_stall.cold.79+0xa83/0xba5 kernel/rcu/tree.c:1430
 check_cpu_stall kernel/rcu/tree.c:1557 [inline]
 __rcu_pending kernel/rcu/tree.c:3276 [inline]
 rcu_pending kernel/rcu/tree.c:3319 [inline]
 rcu_check_callbacks+0xafc/0x1990 kernel/rcu/tree.c:2665
 __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:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
 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
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
 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
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
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: 3f 7e 0f 85 32 ff ff ff e8 a5 7f 3e ff e9 28 ff ff ff e8 0c e3 c2 ff 48 83 3d 5c f4 6f 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 62 23
RSP: 0000:ffff8801dae07450 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffffff8184e1ca
RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286
RBP: ffff8801dae074c0 R08: ffff880193c38700 R09: fffffbfff12812c4
R10: ffff8801dae06098 R11: ffffffff89409623 R12: ffff8801d9a04040
R13: ffff8801d9a04040 R14: 0000000000000000 R15: 0000000000000286
 __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
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 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
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 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
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
 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:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409
Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00
RSP: 0000:ffff8801bccde450 EFLAGS: 00000293
 ORIG_RAX: ffffffffffffff13
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca
RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0
R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000
R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0
 vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922
 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 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 83 3d bd d4 6f 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 62 23
RSP: 0000:ffff8801980a7748 EFLAGS: 00000286
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
 ORIG_RAX: ffffffffffffff13
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000
 printk+0xa7/0xcf kernel/printk/printk.c:1996
RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286
RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4
R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000
 dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371
R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2079 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066
 bpf_prog_41f2bcae09cd4ac3+0x194/0x1000
 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
rcu: rcu_preempt kthread starved for 10548 jiffies! g90369 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R
  running task    22736    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 __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
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 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
 rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194
 kmalloc include/linux/slab.h:513 [inline]
 syslog_print kernel/printk/printk.c:1297 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465
 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: 0033:0x7f5bbee581fd
Code: Bad RIP value.
RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd
RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000
R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420
R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
active_anon:48193 inactive_anon:137 isolated_anon:0
 active_file:16 inactive_file:15 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9165 slab_unreclaimable:1475206
 mapped:8194 shmem:144 pagetables:402 bounce:0
 free:13771 free_pcp:443 free_cma:0
Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB 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
 2819
 6323
 6323
Node 0 
DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]:
 0
 0
 3503
 3503
Node 0 
Normal free:13912kB min:37352kB low:46688kB high:56024kB active_anon:192772kB inactive_anon:548kB active_file:60kB inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB
lowmem_reserve[]:
 kthread+0x35a/0x420 kernel/kthread.c:246
 0
 0
 0
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
 0
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB 
syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
(U) 
syz-executor0 cpuset=
2*64kB 
syz0
(U) 
 mems_allowed=0
1*128kB 
CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118
(U) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
1*256kB (U) 
Call Trace:
0*512kB 
 <IRQ>
1*1024kB 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
(U) 
1*2048kB 
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
(M) 
3*4096kB 
(M) 
= 15908kB
Node 0 
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
DMA32: 
4*4kB 
(UM) 
2*8kB (M) 
3*16kB 
(M) 
3*32kB 
(M) 
4*64kB 
(UM) 
4*128kB 
(UM) 
3*256kB 
(M) 
4*512kB 
(UM) 
3*1024kB 
(UM) 
3*2048kB 
(M) 
3*4096kB 
(M) 
= 25264kB
Node 0 
Normal: 
942*4kB 
(UME) 
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
338*8kB 
(UMEH) 
149*16kB 
(UME) 
84*32kB 
(UMEH) 
 __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
25*64kB (UM) 
2*128kB 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
(UH) 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
0*256kB 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
1*512kB 
(H) 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
0*1024kB 
0*2048kB 0*4096kB 
= 13912kB
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
175 total pagecache pages
0 pages in swap cache
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
Swap cache stats: add 0, delete 0, find 0/0
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
Free swap  = 0kB
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
Total swap = 0kB
1965979 pages RAM
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
0 pages HighMem/MovableOnly
342307 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
 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 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 83 3d bd d4 6f 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 62 23
RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000
RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286
RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4
R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000
R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2079 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066
 bpf_prog_41f2bcae09cd4ac3+0x194/0x1000
Mem-Info:
CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:48193 inactive_anon:137 isolated_anon:0
 active_file:16 inactive_file:15 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9165 slab_unreclaimable:1475206
 mapped:8194 shmem:144 pagetables:402 bounce:0
 free:13771 free_pcp:443 free_cma:0
Call Trace:
Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB 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.119+0xb7/0x1bd mm/page_alloc.c:3426
 0
 2819
 6323
 6323
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
Node 0 
DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]:
 0
 0
 3503
 3503
Node 0 
Normal free:13912kB min:37352kB low:46688kB high:56024kB active_anon:192772kB inactive_anon:548kB active_file:60kB inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB bounce:0kB free_pcp:1524kB local_pcp:68kB free_cma:0kB
lowmem_reserve[]: 0
 0
 0
 0
Node 0 DMA: 
1*4kB 
(U) 
0*8kB 
0*16kB 
1*32kB 
(U) 
2*64kB 
(U) 
1*128kB 
(U) 
1*256kB 
(U) 
0*512kB 
1*1024kB 
(U) 
1*2048kB 
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
(M) 
3*4096kB 
(M) 
= 15908kB
Node 0 
DMA32: 
 __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
4*4kB 
(UM) 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
2*8kB 
 ____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
3*16kB 
(M) 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
3*32kB 
(M) 
4*64kB 
(UM) 
4*128kB 
(UM) 
3*256kB 
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
(M) 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
4*512kB 
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
(UM) 
3*1024kB 
(UM) 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
3*2048kB 
(M) 
3*4096kB 
(M) 
= 25264kB
Node 0 
Normal: 
942*4kB 
(UME) 
338*8kB 
(UMEH) 
149*16kB 
(UME) 
84*32kB 
(UMEH) 
25*64kB 
(UM) 
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
2*128kB 
(UH) 
0*256kB 
1*512kB 
(H) 
0*1024kB 
0*2048kB 
0*4096kB 
= 13912kB
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
175 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
1965979 pages RAM
0 pages HighMem/MovableOnly
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
342307 pages reserved
0 pages cma reserved
ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb
syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor0 cpuset=
syz0
 mems_allowed=0
 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:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409
Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00
RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca
RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293
RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0
R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000
R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0
 vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1996
 dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 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 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:1297 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465
 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: 0033:0x7f5bbee581fd
Code: Bad RIP value.
RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd
RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000
R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420
R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003
CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118
Mem-Info:
active_anon:48193 inactive_anon:137 isolated_anon:0
 active_file:16 inactive_file:15 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9165 slab_unreclaimable:1475206
 mapped:8194 shmem:144 pagetables:402 bounce:0
 free:13771 free_pcp:443 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB 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
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
 2819
 6323 6323
Node 0 DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
lowmem_reserve[]:
 0
 0 3503
 3503
Node 0 
Normal free:13912kB min:37352kB low:46688kB high:56024kB active_anon:192772kB inactive_anon:548kB active_file:60kB inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB bounce:0kB free_pcp:1524kB local_pcp:1456kB 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 
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
1*1024kB 
(U) 
1*2048kB 
(M) 
3*4096kB 
(M) 
 __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
= 15908kB
Node 0 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
DMA32: 
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
4*4kB 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
(UM) 
2*8kB 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
(M) 
3*16kB 
(M) 
3*32kB 
(M) 
4*64kB 
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
(UM) 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
4*128kB 
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
(UM) 
3*256kB 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
(M) 
4*512kB 
(UM) 
3*1024kB 
(UM) 
3*2048kB 
(M) 
3*4096kB 
(M) 
= 25264kB
Node 0 
Normal: 
942*4kB 
(UME) 
338*8kB 
(UMEH) 
149*16kB 
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
(UME) 
84*32kB 
(UMEH) 
25*64kB 
(UM) 
2*128kB 
(UH) 
0*256kB 
1*512kB 
(H) 
0*1024kB 
0*2048kB 
0*4096kB 
= 13912kB
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
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
175 total pagecache pages
0 pages in swap cache
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
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
rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
rsyslogd cpuset=
 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
 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 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 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 83 3d bd d4 6f 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 62 23
RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000
RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286
RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4
R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000
R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2079 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066
 bpf_prog_41f2bcae09cd4ac3+0x194/0x1000
CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118
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: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+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:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409
Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00
RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca
RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293
RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0
R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000
R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0
 vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1996
 dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371
 dump_header+0x7cc/0xf72 mm/oom_kill.c:447
 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 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:1297 [inline]
 do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465
 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: 0033:0x7f5bbee581fd
Code: Bad RIP value.
RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd
RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000
R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420
R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003
warn_alloc_show_mem: 1 callbacks suppressed
CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118
Mem-Info:
active_anon:48193 inactive_anon:137 isolated_anon:0
 active_file:16 inactive_file:15 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 slab_reclaimable:9165 slab_unreclaimable:1475206
 mapped:8194 shmem:144 pagetables:402 bounce:0
 free:13771 free_pcp:443 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 178176kB 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
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
 2819
 6323
 6323
Node 0 
 __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297
DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]:
 0
 0
 3503 3503
Node 0 Normal free:13912kB min:37352kB low:46688kB high:56024kB active_anon:192772kB inactive_anon:548kB active_file:60kB inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB bounce:0kB free_pcp:1524kB local_pcp:1456kB 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) 
 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390
1*256kB 
(U) 
0*512kB 
1*1024kB 
(U) 
1*2048kB 
 __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*4096kB 
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
(M) = 15908kB
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
Node 0 
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
DMA32: 
4*4kB 
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
(UM) 
2*8kB 
(M) 
3*16kB 
(M) 
3*32kB 
(M) 
 alloc_skb include/linux/skbuff.h:997 [inline]
 ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403
4*64kB 
 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669
(UM) 
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836
4*128kB 
(UM) 
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
3*256kB 
(M) 
4*512kB 
(UM) 
3*1024kB 
(UM) 
3*2048kB 
(M) 
3*4096kB 
(M) 
= 25264kB
Node 0 
Normal: 
942*4kB 
(UME) 
338*8kB 
(UMEH) 
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
149*16kB 
(UME) 
84*32kB 
(UMEH) 
25*64kB 
(UM) 
2*128kB 
(UH) 
0*256kB 
1*512kB 
(H) 
0*1024kB 
0*2048kB 
0*4096kB 
= 13912kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
175 total pagecache pages
 __do_softirq+0x30b/0xad8 kernel/softirq.c:292
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
rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:412
rsyslogd cpuset=
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056
/
 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 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 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 83 3d bd d4 6f 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 62 23
RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000
RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286
RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4
R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000
R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2079 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066
 bpf_prog_41f2bcae09cd4ac3+0x194/0x1000
CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118
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
 warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426
syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
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: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

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-bpf-next-kasan-gce 2018/10/12 04:50 bpf-next ef4ab8447aa2 ba6ddb43 .config log report
* Struck through repros no longer work on HEAD.