1965979 pages RAM 0 pages HighMem/MovableOnly __do_softirq+0x308/0xb7e kernel/softirq.c:292 342867 pages reserved 0 pages cma reserved INFO: task syz-executor3:5517 blocked for more than 140 seconds. Not tainted 4.19.0+ #135 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 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 syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) syz-executor0 cpuset= syz0 mems_allowed=0 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 e5 6b 90 f9 e8 e0 1c c0 f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 3a cb 8d 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 10 cb RSP: 0000:ffff8801bba26140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff100376999be RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb4ccd7c RBP: ffff8801bba26168 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bba26220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02 RAX: ffff8801bb4cc500 RBX: 1ffffffff12a3e8e RCX: 1ffff100376999be RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bba262c8 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: 1ffff10037744c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001 dump_header+0x27b/0xf72 mm/oom_kill.c:441 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] __alloc_pages_slowpath+0x22d4/0x2d70 mm/page_alloc.c:4235 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259 __do_fault+0x100/0x6b0 mm/memory.c:2993 do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7f7ae0dfee40 Code: Bad RIP value. RSP: 002b:00007ffdab0ddf58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffdab0de080 RCX: 00007f7ae0dfee40 RDX: 0000000000000000 RSI: 00007ffdab0de100 RDI: 00007ffdab0de100 RBP: 00007ffdab0de000 R08: 00007ffdab0ddf60 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffdab0de260 R14: 0000000000000000 R15: 0000000000000000 CPU: 0 PID: 32339 Comm: syz-executor0 Not tainted 4.19.0+ #135 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: cron: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 cron cpuset= / warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 mems_allowed=0 __alloc_pages_slowpath+0x2660/0x2d70 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+0xa5/0x8c0 mm/slab.c:2677 fallback_alloc+0x204/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552 skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 ____bpf_clone_redirect net/core/filter.c:2080 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067 bpf_prog_bebbfe2050753572+0x6d3/0x1000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 1 PID: 5375 Comm: cron Not tainted 4.19.0+ #135 Mem-Info: active_anon:49673 inactive_anon:1023 isolated_anon:0 active_file:12 inactive_file:14 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9322 slab_unreclaimable:1478098 mapped:32770 shmem:1030 pagetables:542 bounce:0 free:13724 free_pcp:154 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:198692kB inactive_anon:4092kB active_file:48kB inactive_file:56kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:131080kB dirty:0kB writeback:0kB shmem:4120kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB 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 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 lowmem_reserve[]: 0 2818 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 6321 6321 Node 0 DMA32 free:25092kB 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:2888720kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:248kB free_cma:0kB lowmem_reserve[]: __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 0 0 3503 3503 Node 0 Normal free:13896kB min:37364kB low:46704kB high:56044kB active_anon:198692kB inactive_anon:4092kB active_file:48kB inactive_file:56kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5568kB pagetables:2168kB bounce:0kB free_pcp:368kB 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) __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB __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 Node 0 DMA32: 5*4kB fallback_alloc+0x204/0x2e0 mm/slab.c:3219 (UM) ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 0*8kB 3*16kB slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 (UM) 2*32kB (UM) __alloc_skb+0x119/0x770 net/core/skbuff.c:193 4*64kB (UM) 5*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB 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 3*2048kB addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 (UM) 3*4096kB call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 (M) = 25092kB Node 0 Normal: 914*4kB (ME) 452*8kB (ME) 180*16kB (UME) 73*32kB (UME) 20*64kB (M) 1*128kB (U) 0*256kB 0*512kB expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 0*1024kB 0*2048kB 0*4096kB = 13896kB 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 1056 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 342867 pages reserved 0 pages cma reserved run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 syz-executor3 D __do_softirq+0x308/0xb7e kernel/softirq.c:292 12776 5517 1 0x80000006 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3474 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 schedule+0xfe/0x460 kernel/sched/core.c:3518 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3576 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 e5 6b 90 f9 e8 e0 1c c0 f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 3a cb 8d 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 10 cb mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 RSP: 0000:ffff8801bba26140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff100376999be RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb4ccd7c RBP: ffff8801bba26168 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bba26220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02 tun_detach drivers/net/tun.c:737 [inline] tun_chr_close+0x3d/0x180 drivers/net/tun.c:3376 RAX: ffff8801bb4cc500 RBX: 1ffffffff12a3e8e RCX: 1ffff100376999be RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bba262c8 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: 1ffff10037744c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001 __fput+0x385/0xa30 fs/file_table.c:278 dump_header+0x27b/0xf72 mm/oom_kill.c:441 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1ad6/0x26d0 kernel/exit.c:867 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+0x22d4/0x2d70 mm/page_alloc.c:4235 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2517 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259 __do_fault+0x100/0x6b0 mm/memory.c:2993 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x410fa0 Code: Bad RIP value. handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 RSP: 002b:00007ffd2611d9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 0000000000410fa0 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 RDX: 0000000000000038 RSI: 0000000000728020 RDI: 00000000000000f9 RBP: 0000000000000003 R08: 0000000000006000 R09: 0000000000004000 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 R10: 00007ffd2611d360 R11: 0000000000000246 R12: 000000000000001e R13: 0000000000073300 R14: 00000000000002fe R15: 0000000000000003 INFO: task kworker/0:5:9827 blocked for more than 140 seconds. Not tainted 4.19.0+ #135 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:5 D 22632 9827 2 0x80000000 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7f7ae0dfee40 Code: Bad RIP value. Workqueue: events linkwatch_event RSP: 002b:00007ffdab0ddf58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffdab0de080 RCX: 00007f7ae0dfee40 RDX: 0000000000000000 RSI: 00007ffdab0de100 RDI: 00007ffdab0de100 RBP: 00007ffdab0de000 R08: 00007ffdab0ddf60 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffdab0de260 R14: 0000000000000000 R15: 0000000000000000 ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb Call Trace: cron: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) context_switch kernel/sched/core.c:2826 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3474 cron cpuset= / mems_allowed=0 CPU: 1 PID: 5375 Comm: cron Not tainted 4.19.0+ #135 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 schedule+0xfe/0x460 kernel/sched/core.c:3518 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3576 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 __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+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 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 linkwatch_event+0x5f/0xe0 net/core/link_watch.c:236 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 e5 6b 90 f9 e8 e0 1c c0 f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 3a cb 8d 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 10 cb RSP: 0000:ffff8801bba26140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff100376999be RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb4ccd7c RBP: ffff8801bba26168 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bba26220 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02 RAX: ffff8801bb4cc500 RBX: 1ffffffff12a3e8e RCX: 1ffff100376999be RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bba262c8 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: 1ffff10037744c4c R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001 dump_header+0x27b/0xf72 mm/oom_kill.c:441 kthread+0x35a/0x420 kernel/kthread.c:246 oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350 Showing all locks held in the system: 3 locks held by kworker/0:1/12: 1 lock held by khungtaskd/1004: #0: 00000000a73020cf out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 ( rcu_read_lock ){....} , at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] __alloc_pages_slowpath+0x22d4/0x2d70 mm/page_alloc.c:4235 2 locks held by rsyslogd/5335: #0: 00000000b7c00aa3 ( &mm->mmap_sem ){++++} , at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] , at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 #1: 000000008e002ef0 ( &ei->i_mmap_sem){++++} , at: ext4_filemap_fault+0x7a/0xad fs/ext4/inode.c:6258 7 locks held by cron/5375: alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 2 locks held by getty/5425: #0: 00000000c0ce3fb5 ( page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 &tty->ldisc_sem ){++++} , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000005f5c07c6 ( &ldata->atomic_read_lock ){+.+.} , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5426: ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259 __do_fault+0x100/0x6b0 mm/memory.c:2993 #0: 00000000048142fb ( &tty->ldisc_sem do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 ){++++} , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000fac29d09 ( &ldata->atomic_read_lock ){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5427: #0: handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 00000000818a102d ( &tty->ldisc_sem do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 ){++++} , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 #1: 00000000446e20db ( &ldata->atomic_read_lock ){+.+.} page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 RIP: 0033:0x7f7ae0dfee40 Code: Bad RIP value. syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) RSP: 002b:00007ffdab0ddf58 EFLAGS: 00010246 syz-executor0 cpuset= RAX: 0000000000000000 RBX: 00007ffdab0de080 RCX: 00007f7ae0dfee40 syz0 RDX: 0000000000000000 RSI: 00007ffdab0de100 RDI: 00007ffdab0de100 RBP: 00007ffdab0de000 R08: 00007ffdab0ddf60 R09: 0000000000000000 mems_allowed=0 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffdab0de260 R14: 0000000000000000 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 32339 Comm: syz-executor0 Not tainted 4.19.0+ #135 Mem-Info: active_anon:49648 inactive_anon:1023 isolated_anon:0 active_file:12 inactive_file:14 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9322 slab_unreclaimable:1478098 mapped:24595 shmem:1030 pagetables:505 bounce:0 free:13724 free_pcp:210 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:198592kB inactive_anon:4092kB active_file:48kB inactive_file:56kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:98380kB dirty:0kB writeback:0kB shmem:4120kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d 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.117+0xb7/0x1bd mm/page_alloc.c:3426 0 2818 6321 6321 Node 0 __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 DMA32 free:25092kB 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:2888720kB 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:13896kB min:37364kB low:46704kB high:56044kB active_anon:198592kB inactive_anon:4092kB active_file:48kB inactive_file:56kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5536kB pagetables:2020kB bounce:0kB free_pcp:592kB local_pcp:120kB 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 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB __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 (M) = 15908kB Node 0 fallback_alloc+0x204/0x2e0 mm/slab.c:3219 DMA32: ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 5*4kB __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552 (UM) skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 0*8kB 3*16kB (UM) 2*32kB (UM) 4*64kB (UM) 5*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB ____bpf_clone_redirect net/core/filter.c:2080 [inline] bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2067 (UM) 3*2048kB (UM) bpf_prog_bebbfe2050753572+0x6d3/0x1000 3*4096kB (M) = 25092kB Node 0 Normal: 914*4kB (ME) 452*8kB (ME) 180*16kB (UME) 74*32kB (UME) 20*64kB (M) 1*128kB (U) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 13928kB 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 1056 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 2 locks held by getty/5428: 342867 pages reserved 0 pages cma reserved ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb #0: cron: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) cron cpuset=/ mems_allowed=0 CPU: 1 PID: 5375 Comm: cron Not tainted 4.19.0+ #135 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 000000003da1046f __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 ( &tty->ldisc_sem ){++++} , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001d1a2d3b ( &ldata->atomic_read_lock ){+.+.} , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5429: #0: 000000007403d755 ( __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 &tty->ldisc_sem ){++++} , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: __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 000000004adf695a ( fallback_alloc+0x204/0x2e0 mm/slab.c:3219 &ldata->atomic_read_lock ____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 , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5430: #0: 000000003a946681 ( alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 &tty->ldisc_sem ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 ){++++} addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 00000000d7cdcc7e ( &ldata->atomic_read_lock ){+.+.} , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5431: #0: expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 00000000decd61ae ( &tty->ldisc_sem ){++++} , at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000ae0dbbfd run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 ( &ldata->atomic_read_lock __do_softirq+0x308/0xb7e kernel/softirq.c:292 ){+.+.} , at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by syz-fuzzer/5451: #0: 00000000eaf1a2c5 ( invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 &mm->mmap_sem exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 ){++++} , at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] , at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 #1: 000000008efa622d ( &ei->i_mmap_sem ){++++} apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 , at: ext4_filemap_fault+0x7a/0xad fs/ext4/inode.c:6258 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 2 locks held by syz-fuzzer/5452: Code: 00 e8 e5 6b 90 f9 e8 e0 1c c0 f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 3a cb 8d 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 10 cb #0: RSP: 0000:ffff8801bba26140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff100376999be RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb4ccd7c RBP: ffff8801bba26168 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: dffffc0000000000 00000000eaf1a2c5 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d ( RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 2b 21 c0 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0000:ffff8801bba26220 EFLAGS: 00000293 &mm->mmap_sem ORIG_RAX: ffffffffffffff02 RAX: ffff8801bb4cc500 RBX: 1ffffffff12a3e8e RCX: 1ffff100376999be RDX: 0000000000000000 RSI: ffffffff87be0092 RDI: 0000000000000293 RBP: ffff8801bba262c8 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: 1ffff10037744c4c ){++++} R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000001 , at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] , at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 #1: dump_header+0x27b/0xf72 mm/oom_kill.c:441 000000008efa622d ( &ei->i_mmap_sem ){++++} , at: ext4_filemap_fault+0x7a/0xad fs/ext4/inode.c:6258 2 locks held by syz-fuzzer/5455: #0: 00000000eaf1a2c5 ( &mm->mmap_sem ){++++} , at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] , at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 #1: 000000008efa622d ( oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 &ei->i_mmap_sem ){++++} , at: ext4_filemap_fault+0x7a/0xad fs/ext4/inode.c:6258 2 locks held by syz-fuzzer/5463: #0: 00000000eaf1a2c5 ( &mm->mmap_sem out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 ){++++} __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] __alloc_pages_slowpath+0x22d4/0x2d70 mm/page_alloc.c:4235 , at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] , at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 #1: 000000008efa622d ( &ei->i_mmap_sem ){++++} , at: ext4_filemap_fault+0x7a/0xad fs/ext4/inode.c:6258 __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 2 locks held by syz-fuzzer/5464: #0: 00000000eaf1a2c5 ( &mm->mmap_sem ){++++} alloc_pages_current+0x173/0x350 mm/mempolicy.c:2093 , at: do_user_addr_fault arch/x86/mm/fault.c:1351 [inline] , at: __do_page_fault+0x3da/0xe60 arch/x86/mm/fault.c:1489 alloc_pages include/linux/gfp.h:509 [inline] __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:946 #1: 000000008efa622d ( page_cache_read mm/filemap.c:2385 [inline] filemap_fault+0x1594/0x25f0 mm/filemap.c:2569 &ei->i_mmap_sem ){++++} , at: ext4_filemap_fault+0x7a/0xad fs/ext4/inode.c:6258 1 lock held by syz-executor2/5488: #0: 0000000001253e63 ( rtnl_mutex ){+.+.} , at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 1 lock held by syz-executor3/5517: #0: 0000000001253e63 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6259 ( __do_fault+0x100/0x6b0 mm/memory.c:2993 rtnl_mutex ){+.+.} , at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 do_read_fault mm/memory.c:3405 [inline] do_fault mm/memory.c:3505 [inline] handle_pte_fault mm/memory.c:3736 [inline] __handle_mm_fault+0x307c/0x5920 mm/memory.c:3860 3 locks held by kworker/0:5/9827: #0: 000000008ca84e7b ( (wq_completion)"events" ){+.+.} , at: __write_once_size include/linux/compiler.h:206 [inline] , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] , at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] , at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] , at: set_work_data kernel/workqueue.c:617 [inline] , at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] , at: process_one_work+0xb43/0x1c40 kernel/workqueue.c:2124 #1: 00000000675ea0a3 ( (linkwatch_work).work handle_mm_fault+0x54f/0xc70 mm/memory.c:3897 ){+.+.} do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 , at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 #2: 0000000001253e63 ( rtnl_mutex ){+.+.} , at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 ============================================= page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1136 RIP: 0033:0x7f7ae0dfee40 NMI backtrace for cpu 0 Code: Bad RIP value. RSP: 002b:00007ffdab0ddf58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffdab0de080 RCX: 00007f7ae0dfee40 RDX: 0000000000000000 RSI: 00007ffdab0de100 RDI: 00007ffdab0de100 RBP: 00007ffdab0de000 R08: 00007ffdab0ddf60 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffdab0de260 R14: 0000000000000000 R15: 0000000000000000 warn_alloc_show_mem: 1 callbacks suppressed CPU: 0 PID: 1004 Comm: khungtaskd Not tainted 4.19.0+ #135 Mem-Info: active_anon:49648 inactive_anon:1023 isolated_anon:0 active_file:20 inactive_file:6 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:9322 slab_unreclaimable:1478100 mapped:24578 shmem:1030 pagetables:497 bounce:0 free:13732 free_pcp:210 free_cma:0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Node 0 active_anon:198592kB inactive_anon:4092kB active_file:80kB inactive_file:24kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:98312kB dirty:0kB writeback:0kB shmem:4120kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 182272kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Call Trace: Node 0 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d 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 2818 nmi_cpu_backtrace.cold.1+0x5c/0xa1 lib/nmi_backtrace.c:101 6321 6321 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62 Node 0 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 DMA32 free:25092kB 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:2888720kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB free_cma:0kB trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb3e/0x1050 kernel/hung_task.c:265 lowmem_reserve[]: 0 0 3503 3503 Node 0 Normal free:13928kB min:37364kB low:46704kB high:56044kB active_anon:198592kB inactive_anon:4092kB active_file:80kB inactive_file:24kB unevictable:0kB writepending:0kB present:4718592kB managed:3587820kB mlocked:0kB kernel_stack:5536kB pagetables:1988kB bounce:0kB free_pcp:592kB local_pcp:120kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: kthread+0x35a/0x420 kernel/kthread.c:246 1*4kB (U) ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350 0*8kB 0*16kB Sending NMI from CPU 0 to CPUs 1: 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) NMI backtrace for cpu 1 CPU: 1 PID: 5375 Comm: cron Not tainted 4.19.0+ #135 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memcpy+0x0/0x50 mm/kasan/kasan.c:297 Code: 08 48 89 de 4c 89 e7 ba 01 00 00 00 e8 99 f7 ff ff 48 89 da 4c 89 ee 4c 89 e7 e8 bb 4a 02 06 5b 41 5c 41 5d 5d c3 0f 1f 40 00 <55> 48 89 e5 41 55 49 89 f5 48 8b 4d 08 41 54 49 89 fc 4c 89 ef 53 RSP: 0000:ffff8801daf05a70 EFLAGS: 00000006 RAX: ffff8801bb4cc500 RBX: ffffffff8b08f160 RCX: ffffffff87c23451 RDX: 0000000000000001 RSI: ffffffff882be2a0 RDI: ffffffff8b08f160 RBP: ffff8801daf05b48 R08: ffff8801bb4cc500 R09: ffffed003b5e0b83 R10: ffffed003b5e0b83 R11: 0000000000000003 R12: ffffffff882be2a0 R13: 0000000074f70e9f R14: ffffffff882be2a1 R15: ffff8801daf05b20 FS: 00007f7ae17217a0(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7ae0dfee16 CR3: 00000001bbab8000 CR4: 00000000001406e0 DR0: 00000000200000c0 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: sprintf+0xb0/0xe0 lib/vsprintf.c:2495 print_time kernel/printk/printk.c:1224 [inline] print_prefix+0x26a/0x3f0 kernel/printk/printk.c:1247 msg_print_text+0xcc/0x1d0 kernel/printk/printk.c:1274 console_unlock+0x4d3/0x1160 kernel/printk/printk.c:2379 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 show_migration_types mm/page_alloc.c:4841 [inline] show_free_areas.cold.118+0x1f34/0x215d mm/page_alloc.c:5031 show_mem+0x34/0x17b lib/show_mem.c:18 warn_alloc_show_mem mm/page_alloc.c:3403 [inline] warn_alloc.cold.117+0x152/0x1bd mm/page_alloc.c:3427 __alloc_pages_slowpath+0x2660/0x2d70 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+0xa5/0x8c0 mm/slab.c:2677 fallback_alloc+0x204/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 slab_alloc_node mm/slab.c:3327 [inline] kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:997 [inline] ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:preempt_schedule_irq+0xaf/0x140 kernel/sched/core.c:3700 Code: 00 e8 e5 6b 90 f9 e8 e0 1c c0 f9 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 75 73 48 83 3d 3a cb 8d 01 00 74 61 fb 66 0f 1f 44 00 00 01 00 00 00 e8 f7 cd ff ff 41 80 7d 00 00 75 6c 48 83 3d 10 cb RSP: 0000:ffff8801bba26140 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a3e90 RBX: 0000000000000000 RCX: 1ffff100376999be RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb4ccd7c RBP: ffff8801bba26168 R08: ffff8801bb4ccdf0 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8801bb4cc500 R12: dffffc0000000000 R13: fffffbfff12a3e8f R14: ffffffff8951f480 R15: ffffffff8951f478 retint_kernel+0x1b/0x2d RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x39d lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 70 f4 51 89 e8 21 fa 02 fa 48 83 3d e9 f3 93 01 00 0f 84 63 fe ff ff e8 3e 21 c0 f Lost 172 message(s)! syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC|__GFP_COMP), nodemask=(null) 0*512kB syz-executor0 cpuset= 1*1024kB syz0 (U) mems_allowed=0 1*2048kB CPU: 0 PID: 32339 Comm: syz-executor0 Not tainted 4.19.0+ #135 (M) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: 3*4096kB __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 (M) = 15908kB warn_alloc.cold.117+0xb7/0x1bd mm/page_alloc.c:3426 Node 0 DMA32: 5*4kB (UM) 0*8kB 3*16kB (UM) __alloc_pages_slowpath+0x2660/0x2d70 mm/page_alloc.c:4297 2*32kB (UM) 4*64kB (UM) 5*128kB (UM) 4*256kB (UM) 3*512kB (M) 3*1024kB (UM) 3*2048kB (UM) 3*4096kB (M) = 25092kB Node 0 Normal: 914*4kB (ME) 452*8kB __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390