syzbot

 sign-in | mailing list | source | docs
🐞 Open [984] ≡ Subsystems 🐞 Fixed [5236] 🐞 Invalid [12500] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

INFO: rcu detected stall in __run_timers (2)

Status: closed as dup on 2019/01/02 16:40
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+9ffdd3cba36a76442881@syzkaller.appspotmail.com
First crash: 2051d, last: 1927d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
INFO: rcu detected stall in ndisc_alloc_skb net 1 2022d 1942d
▶ ▼ Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in __run_timers (4) tomoyo 4 1540d 1554d 0/26 auto-closed as invalid on 2020/05/06 02:55
linux-5.15 INFO: rcu detected stall in __run_timers 1 373d 373d 0/3 auto-obsoleted due to no activity on 2023/08/15 19:18
upstream INFO: rcu detected stall in __run_timers net 2 2054d 2056d 0/26 closed as invalid on 2018/09/11 10:51
upstream INFO: rcu detected stall in __run_timers (6) kernel 2 782d 798d 0/26 auto-closed as invalid on 2022/06/02 21:46
upstream INFO: rcu detected stall in __run_timers (3) mm 4 1666d 1688d 0/26 auto-closed as invalid on 2019/12/31 08:04
upstream INFO: rcu detected stall in __run_timers (5) kernel C error error 63 814d 1327d 0/26 closed as invalid on 2022/02/08 10:39

Sample crash report:
CPU: 1 PID: 6038 Comm: syz-fuzzer Not tainted 4.20.0-rc3+ #95
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
rcu: 	(detected by 0, t=10590 jiffies, g=44325, q=2)
Call Trace:
rcu: All QSes seen, last rcu_preempt kthread activity 10570 (4294982067-4294971497), jiffies_till_next_fqs=1, root ->qsmask 0x0
 <IRQ>
syz-executor4   R  running task    20624 19389  10013 0x8010000c
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Call Trace:
 <IRQ>
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 sched_show_task.cold.84+0x2b6/0x30a kernel/sched/core.c:5293
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 print_other_cpu_stall.cold.66+0x7dd/0x8bb kernel/rcu/tree.c:1286
 check_cpu_stall kernel/rcu/tree.c:1415 [inline]
 rcu_pending kernel/rcu/tree.c:2961 [inline]
 rcu_check_callbacks+0xfd7/0x13f0 kernel/rcu/tree.c:2506
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_del_pg+0x3df/0x790 net/bridge/br_multicast.c:292
 br_multicast_port_group_expired+0x189/0x1e0 net/bridge/br_multicast.c:316
 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:1034 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline]
RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642
Code: 3f 7e 0f 85 32 ff ff ff e8 a5 10 3e ff e9 28 ff ff ff e8 4c 46 c3 ff 48 83 3d e4 8e 8f 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 5a bd
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
RSP: 0000:ffff8881dae073d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 1ffff11031d04199
RDX: 0000000000000000 RSI: ffff88818e820cd0 RDI: 0000000000000286
RBP: ffff8881dae07448 R08: ffff88818e820cc8 R09: 0000000000000002
R10: 0000000000000000 R11: ffff88818e820400 R12: ffff8881d9a1c0c0
R13: ffff8881d9a1c0c0 R14: 0000000000000000 R15: 0000000000000286
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 alloc_skb include/linux/skbuff.h:997 [inline]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:lock_acquire+0x268/0x520 kernel/locking/lockdep.c:3847
Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 44 02 00 00 48 83 3d 77 1f f0 07 00 0f 84 c3 01 00 00 48 8b bd 20 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00
RSP: 0000:ffff8881cd3f6158 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11039a7ec30 RCX: 0000000000000000
RDX: 1ffffffff12a3f6e RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8881cd3f6248 R08: ffff8881c137ee98 R09: 0000000000000008
R10: 0000000000000078 R11: ffff8881c137e580 R12: ffff8881c137e580
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 down_read_trylock+0xda/0x140 kernel/locking/rwsem.c:56
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 shrink_slab+0x207/0x8c0 mm/vmscan.c:696
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 f6 f0 3d ff e9 c5 fe ff ff e8 9d 26 c3 ff 48 83 3d 35 6f 8f 07 00 0f 84 41 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 5a bd
RSP: 0000:ffff8881962576f8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa48/0x2de0 mm/page_alloc.c:4185
RDX: 0000000000000000 RSI: ffff88818e820c80 RDI: 0000000000000286
RBP: ffff888196257760 R08: ffff88818e820400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9a1c0c0 R14: ffff8881d9a1c0c0 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0x90e/0x1000
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
rcu: rcu_preempt kthread starved for 10570 jiffies! g44325 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    22696    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 schedule+0xfe/0x460 kernel/sched/core.c:3516
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420023ea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b97b89d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014fadc0
RBP: 000000c420023ee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420023ed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c42c3edd40 R14: 0000000000000001 R15: 0000000000000000
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
active_anon:56208 inactive_anon:1280 isolated_anon:0
 active_file:17 inactive_file:17 isolated_file:0
 unevictable:0 dirty:4 writeback:0 unstable:0
 slab_reclaimable:9482 slab_unreclaimable:1449936
 mapped:49154 shmem:1326 pagetables:691 bounce:0
 free:13550 free_pcp:124 free_cma:0
Node 0 active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:16kB writeback:0kB shmem:5304kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 208896kB 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 2818 6321 6321
Node 0 DMA32 free:24744kB min:30052kB low:37564kB high:45076kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB 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:13548kB min:37364kB low:46704kB high:56044kB active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB writepending:16kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7040kB pagetables:2764kB bounce:0kB free_pcp:248kB local_pcp:0kB 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) 0*8kB 2*16kB (M) 4*32kB (UM) 4*64kB (UM) 2*128kB (M) 2*256kB (M) 2*512kB (M) 4*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24744kB
Node 0 Normal: 810*4kB (UME) 432*8kB (ME) 159*16kB (UME) 66*32kB (UME) 20*64kB (M) 4*128kB (M) 2*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13656kB
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
1360 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
 kthread+0x35a/0x440 kernel/kthread.c:246
Total swap = 0kB
1965979 pages RAM
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
0 pages HighMem/MovableOnly
aoe: skb alloc failure
342854 pages reserved
0 pages cma reserved
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor4 cpuset=syz4 mems_allowed=0
syz-fuzzer cpuset=/ mems_allowed=0
CPU: 0 PID: 19389 Comm: syz-executor4 Not tainted 4.20.0-rc3+ #95
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 f6 f0 3d ff e9 c5 fe ff ff e8 9d 26 c3 ff 48 83 3d 35 6f 8f 07 00 0f 84 41 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 5a bd
RSP: 0000:ffff8881962576f8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88818e820c80 RDI: 0000000000000286
RBP: ffff888196257760 R08: ffff88818e820400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9a1c0c0 R14: ffff8881d9a1c0c0 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0x90e/0x1000
CPU: 1 PID: 6038 Comm: syz-fuzzer Not tainted 4.20.0-rc3+ #95
Mem-Info:
active_anon:56208 inactive_anon:1280 isolated_anon:0
 active_file:17 inactive_file:17 isolated_file:0
 unevictable:0 dirty:4 writeback:0 unstable:0
 slab_reclaimable:9482 slab_unreclaimable:1449936
 mapped:49154 shmem:1326 pagetables:691 bounce:0
 free:13550 free_pcp:124 free_cma:0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Node 0 active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:16kB writeback:0kB shmem:5304kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 208896kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
Call Trace:
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 <IRQ>
lowmem_reserve[]: 0 2818 6321 6321
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 DMA32 free:24744kB min:30052kB low:37564kB high:45076kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
Node 0 Normal free:13548kB min:37364kB low:46704kB high:56044kB active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB writepending:16kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7040kB pagetables:2764kB bounce:0kB free_pcp:248kB local_pcp:248kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 2*4kB (M) 0*8kB 2*16kB (M) 4*32kB (UM) 4*64kB (UM) 2*128kB (M) 2*256kB (M) 2*512kB (M) 4*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24744kB
Node 0 Normal: 810*4kB (UME) 432*8kB (ME) 159*16kB (UME) 66*32kB (UME) 20*64kB (M) 4*128kB (M) 2*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13656kB
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
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
1360 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
342854 pages reserved
0 pages cma reserved
aoe: skb alloc failure
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-executor4 cpuset=syz4 mems_allowed=0
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_del_pg+0x3df/0x790 net/bridge/br_multicast.c:292
 br_multicast_port_group_expired+0x189/0x1e0 net/bridge/br_multicast.c:316
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:lock_acquire+0x268/0x520 kernel/locking/lockdep.c:3847
Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 44 02 00 00 48 83 3d 77 1f f0 07 00 0f 84 c3 01 00 00 48 8b bd 20 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00
RSP: 0000:ffff8881cd3f6158 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11039a7ec30 RCX: 0000000000000000
RDX: 1ffffffff12a3f6e RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8881cd3f6248 R08: ffff8881c137ee98 R09: 0000000000000008
R10: 0000000000000078 R11: ffff8881c137e580 R12: ffff8881c137e580
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
 down_read_trylock+0xda/0x140 kernel/locking/rwsem.c:56
 shrink_slab+0x207/0x8c0 mm/vmscan.c:696
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa48/0x2de0 mm/page_alloc.c:4185
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420023ea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b97b89d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014fadc0
RBP: 000000c420023ee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420023ed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c42c3edd40 R14: 0000000000000001 R15: 0000000000000000
Mem-Info:
CPU: 0 PID: 19389 Comm: syz-executor4 Not tainted 4.20.0-rc3+ #95
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:56208 inactive_anon:1280 isolated_anon:0
 active_file:17 inactive_file:17 isolated_file:0
 unevictable:0 dirty:4 writeback:0 unstable:0
 slab_reclaimable:9482 slab_unreclaimable:1449936
 mapped:49154 shmem:1326 pagetables:691 bounce:0
 free:13550 free_pcp:124 free_cma:0
Call Trace:
Node 0 active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:16kB writeback:0kB shmem:5304kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 208896kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
lowmem_reserve[]: 0 2818 6321 6321
Node 0 DMA32 free:24744kB min:30052kB low:37564kB high:45076kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13548kB min:37364kB low:46704kB high:56044kB active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB writepending:16kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7040kB pagetables:2764kB bounce:0kB free_pcp:248kB local_pcp:0kB 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) 0*8kB 2*16kB (M) 4*32kB (UM) 4*64kB (UM) 2*128kB (M) 2*256kB (M) 2*512kB (M) 4*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24744kB
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
Node 0 Normal: 810*4kB (UME) 432*8kB (ME) 159*16kB (UME) 66*32kB (UME) 20*64kB (M) 4*128kB (M) 2*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13656kB
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
1360 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
342854 pages reserved
0 pages cma reserved
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 f6 f0 3d ff e9 c5 fe ff ff e8 9d 26 c3 ff 48 83 3d 35 6f 8f 07 00 0f 84 41 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 5a bd
RSP: 0000:ffff8881962576f8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88818e820c80 RDI: 0000000000000286
RBP: ffff888196257760 R08: ffff88818e820400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9a1c0c0 R14: ffff8881d9a1c0c0 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0x90e/0x1000
CPU: 1 PID: 6038 Comm: syz-fuzzer Not tainted 4.20.0-rc3+ #95
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
syz-executor4 cpuset=syz4 mems_allowed=0
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_del_pg+0x3df/0x790 net/bridge/br_multicast.c:292
 br_multicast_port_group_expired+0x189/0x1e0 net/bridge/br_multicast.c:316
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:lock_acquire+0x268/0x520 kernel/locking/lockdep.c:3847
Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 44 02 00 00 48 83 3d 77 1f f0 07 00 0f 84 c3 01 00 00 48 8b bd 20 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00
RSP: 0000:ffff8881cd3f6158 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11039a7ec30 RCX: 0000000000000000
RDX: 1ffffffff12a3f6e RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8881cd3f6248 R08: ffff8881c137ee98 R09: 0000000000000008
R10: 0000000000000078 R11: ffff8881c137e580 R12: ffff8881c137e580
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
 down_read_trylock+0xda/0x140 kernel/locking/rwsem.c:56
 shrink_slab+0x207/0x8c0 mm/vmscan.c:696
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa48/0x2de0 mm/page_alloc.c:4185
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 page_cache_read mm/filemap.c:2312 [inline]
 filemap_fault+0x1595/0x25f0 mm/filemap.c:2496
 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6292
 __do_fault+0x100/0x6b0 mm/memory.c:2996
 do_read_fault mm/memory.c:3408 [inline]
 do_fault mm/memory.c:3534 [inline]
 handle_pte_fault mm/memory.c:3765 [inline]
 __handle_mm_fault+0x3ea0/0x5be0 mm/memory.c:3889
 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926
 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline]
 __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489
 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c420023ea0 EFLAGS: 00010202
RAX: ffffffffffffff92 RBX: 000000003b97b89d RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014fadc0
RBP: 000000c420023ee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c420023ed8 R11: 0000000000000202 R12: 0000000000000001
R13: 000000c42c3edd40 R14: 0000000000000001 R15: 0000000000000000
CPU: 0 PID: 19389 Comm: syz-executor4 Not tainted 4.20.0-rc3+ #95
warn_alloc_show_mem: 1 callbacks suppressed
Mem-Info:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
active_anon:56208 inactive_anon:1280 isolated_anon:0
 active_file:17 inactive_file:17 isolated_file:0
 unevictable:0 dirty:4 writeback:0 unstable:0
 slab_reclaimable:9482 slab_unreclaimable:1449936
 mapped:49154 shmem:1326 pagetables:691 bounce:0
 free:13550 free_pcp:124 free_cma:0
Call Trace:
Node 0 active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:16kB writeback:0kB shmem:5304kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 208896kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
 <IRQ>
Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
lowmem_reserve[]: 0 2818 6321 6321
Node 0 DMA32 free:24744kB min:30052kB low:37564kB high:45076kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:13548kB min:37364kB low:46704kB high:56044kB active_anon:224832kB inactive_anon:5120kB active_file:68kB inactive_file:68kB unevictable:0kB writepending:16kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:7040kB pagetables:2764kB bounce:0kB free_pcp:248kB local_pcp:0kB 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) 0*8kB 2*16kB (M) 4*32kB (UM) 4*64kB (UM) 2*128kB (M) 2*256kB (M) 2*512kB (M) 4*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 24744kB
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
Node 0 Normal: 810*4kB (UME) 432*8kB (ME) 159*16kB (UME) 66*32kB (UME) 20*64kB (M) 4*128kB (M) 2*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13656kB
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
1360 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
342854 pages reserved
0 pages cma reserved
syz-fuzzer: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
syz-fuzzer cpuset=/ mems_allowed=0
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 new_skb+0x26/0x1c0 drivers/block/aoe/aoecmd.c:67
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x279/0x7f0 drivers/block/aoe/aoecmd.c:1381
 discover_timer+0x50/0x60 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [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 f6 f0 3d ff e9 c5 fe ff ff e8 9d 26 c3 ff 48 83 3d 35 6f 8f 07 00 0f 84 41 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 5a bd
RSP: 0000:ffff8881962576f8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000480020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88818e820c80 RDI: 0000000000000286
RBP: ffff888196257760 R08: ffff88818e820400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d9a1c0c0 R14: ffff8881d9a1c0c0 R15: 0000000000480020
 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280
 ____bpf_clone_redirect net/core/filter.c:2080 [inline]
 bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067
 bpf_prog_bebbfe2050753572+0x90e/0x1000
CPU: 1 PID: 6038 Comm: syz-fuzzer Not tainted 4.20.0-rc3+ #95
aoe: skb alloc failure
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
syz-executor4: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
 warn_alloc.cold.116+0xb7/0x1bd mm/page_alloc.c:3423
syz-executor4 cpuset=syz4 mems_allowed=0
 __alloc_pages_slowpath+0x2651/0x2de0 mm/page_alloc.c:4291
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
 fallback_alloc+0x204/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 slab_alloc_node mm/slab.c:3327 [inline]
 kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 nlmsg_new include/net/netlink.h:654 [inline]
 __br_mdb_notify+0x4ff/0x15d0 net/bridge/br_mdb.c:407
 br_mdb_notify+0x310/0x410 net/bridge/br_mdb.c:440
 br_multicast_group_expired+0x1bc/0x610 net/bridge/br_multicast.c:253
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x17f/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:lock_acquire+0x268/0x520 kernel/locking/lockdep.c:3847
Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 44 02 00 00 48 83 3d 77 1f f0 07 00 0f 84 c3 01 00 00 48 8b bd 20 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00
RSP: 0000:ffff8881cd3f6158 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11039a7ec30 RCX: 0000000000000000
RDX: 1ffffffff12a3f6e RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff8881cd3f6248 R08: ffff8881c137ee98 R09: 0000000000000008
R10: 0000000000000078 R11: ffff8881c137e580 R12: ffff8881c137e580
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
 down_read_trylock+0xda/0x140 kernel/locking/rwsem.c:56
 shrink_slab+0x207/0x8c0 mm/vmscan.c:696
 shrink_node+0x431/0x16b0 mm/vmscan.c:2758
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa48/0x2de0 mm/page_alloc.c:4185
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2080
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924

Crashes (58):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/12/03 04:50 bpf dcb40590e69e 7dcaeaf3 .config console log report ci-upstream-bpf-kasan-gce
2018/11/24 21:57 bpf 1efb6ee3edea ecc7c870 .config console log report ci-upstream-bpf-kasan-gce
2018/11/21 14:57 bpf 569a933b03f3 5d9a3924 .config console log report ci-upstream-bpf-kasan-gce
2018/11/18 19:26 bpf 569a933b03f3 adf636a8 .config console log report ci-upstream-bpf-kasan-gce
2018/11/17 05:12 bpf da85d8bfd151 b08ee62a .config console log report ci-upstream-bpf-kasan-gce
2018/10/16 15:07 bpf bd8be2cf8b69 1ba7fd7e .config console log report ci-upstream-bpf-kasan-gce
2018/10/11 22:37 bpf cee271678d0e ba6ddb43 .config console log report ci-upstream-bpf-kasan-gce
2018/10/11 16:59 bpf cee271678d0e 5f818b4b .config console log report ci-upstream-bpf-kasan-gce
2018/10/10 11:07 bpf 262f9d811c76 5b11ac2c .config console log report ci-upstream-bpf-kasan-gce
2018/10/07 02:55 bpf b799207e1e18 8b311eaf .config console log report ci-upstream-bpf-kasan-gce
2018/10/04 14:49 bpf b0584ea66d73 8b311eaf .config console log report ci-upstream-bpf-kasan-gce
2018/10/03 07:53 bpf b0584ea66d73 0f3e0261 .config console log report ci-upstream-bpf-kasan-gce
2018/10/02 09:02 bpf 4288ea006c73 e06f7713 .config console log report ci-upstream-bpf-kasan-gce
2018/10/02 03:44 bpf 4288ea006c73 e06f7713 .config console log report ci-upstream-bpf-kasan-gce
2018/09/30 22:18 net-old 43955a45dc0b 41e4b329 .config console log report ci-upstream-net-this-kasan-gce
2018/09/29 15:22 bpf 4288ea006c73 41e4b329 .config console log report ci-upstream-bpf-kasan-gce
2018/09/13 04:12 bpf 4b1c5d917d34 71907daf .config console log report ci-upstream-bpf-kasan-gce
2019/01/15 07:32 bpf-next b71acb0e3721 ebacf5cb .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/28 07:31 bpf-next 17d95e4225bf 4b6d14f2 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/26 23:31 net-next-old 4afe60a97ba6 ac912200 .config console log report ci-upstream-net-kasan-gce
2018/11/21 13:49 bpf-next f6161a8f3036 5d9a3924 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/20 18:26 bpf-next bbe5d311be66 9aca6b52 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/20 11:06 net-next-old cfc6731d2f79 9bc2a903 .config console log report ci-upstream-net-kasan-gce
2018/11/20 10:05 bpf-next bbe5d311be66 9bc2a903 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/20 02:12 bpf-next bbe5d311be66 adf636a8 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/19 17:10 bpf-next 592ee43faf86 adf636a8 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/16 00:23 bpf-next 407be8d03e20 3a41052e .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/08 23:46 bpf-next bce6a14996f9 e85d2a61 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/07 19:39 bpf-next 5e1abdc3fe56 e85d2a61 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/07 10:16 bpf-next 5e1abdc3fe56 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/07 01:48 bpf-next 5e1abdc3fe56 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/06 23:08 bpf-next 5e1abdc3fe56 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/11/04 03:15 bpf-next 44adbac8f721 8bd6bd63 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/24 06:03 bpf-next 487e2e22ab79 a8292de9 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/23 11:52 bpf-next 487e2e22ab79 24fa2ad8 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/22 07:12 bpf-next fe8ecccc10b3 ecb386fe .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/19 17:25 bpf-next 3ddeac6705ab 9aba67b5 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/19 06:39 bpf-next 4cb967a3d9d9 9aba67b5 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/18 10:39 bpf-next b55cbc8d9b44 d257b2d2 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/18 10:35 bpf-next b55cbc8d9b44 d257b2d2 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/18 08:07 bpf-next b55cbc8d9b44 d257b2d2 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/17 02:37 bpf-next 44d520eb17cd 1ba7fd7e .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/15 22:06 bpf-next d04fb13c9fcd 8cd30605 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/14 10:18 bpf-next 67e89ac32828 caf12900 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/13 04:08 bpf-next 1ae80cf31938 caf12900 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/03 13:13 bpf-next 33d9a7fd6756 0f3e0261 .config console log report ci-upstream-bpf-next-kasan-gce
2018/10/01 02:25 bpf-next 5bf7a60b8e70 41e4b329 .config console log report ci-upstream-bpf-next-kasan-gce
2018/09/30 07:02 bpf-next 5bf7a60b8e70 41e4b329 .config console log report ci-upstream-bpf-next-kasan-gce
2018/09/12 08:50 bpf-next 2e2a0c961a87 3c88136c .config console log report ci-upstream-bpf-next-kasan-gce
* Struck through repros no longer work on HEAD.