INFO: rcu_sched detected stalls on CPUs/tasks: 1-...: (10501 ticks this GP) idle=67e/140000000000002/0 softirq=141303/141318 fqs=438 (detected by 0, t=10502 jiffies, g=21813, c=21812, q=174) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20187 Comm: syz-executor.0 Not tainted 4.14.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888081c84180 task.stack: ffff888204ae0000 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xe/0x50 kernel/kcov.c:65 RSP: 0018:ffff8880aeb07588 EFLAGS: 00000082 RAX: ffff888081c84180 RBX: ffff8880aeb1f5f0 RCX: 1ffffffff0f419ad RDX: 0000000000010100 RSI: ffffffff86e45880 RDI: ffffffff86e458c0 RBP: ffffffff86e458c0 R08: 0000015a836ebabd R09: ffff88821fff7048 R10: ffff88821fff7050 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff86e45880 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000073fad4 CR3: 0000000007c6a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_preemption_disabled+0x30/0x240 lib/smp_processor_id.c:16 kvm_clock_read+0xc/0x30 arch/x86/kernel/kvmclock.c:86 kvm_sched_clock_read+0x5/0x10 arch/x86/kernel/kvmclock.c:100 paravirt_sched_clock arch/x86/include/asm/paravirt.h:175 [inline] sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:228 sched_clock_cpu+0x18/0x1b0 kernel/sched/clock.c:363 irqtime_account_irq+0x63/0x280 kernel/sched/cputime.c:63 account_irq_exit_time include/linux/vtime.h:114 [inline] irq_exit+0x48/0x1a0 kernel/softirq.c:406 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:preempt_count_add+0x64/0x170 kernel/sched/core.c:3107 RSP: 0018:ffff8880aeb07740 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 1ffffffff14b1758 RSI: ffffffff86601abf RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880aeb07fc8 R10: ffff8880aeb0783d R11: 0000000000058071 R12: 0000000000000000 R13: ffff8880aeb07840 R14: ffff888081c84180 R15: 0000000000000002 unwind_next_frame+0xc6/0x17a0 arch/x86/kernel/unwind_orc.c:336 __save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44 save_stack+0x32/0xa0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc mm/kasan/kasan.c:551 [inline] kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc_node mm/slab.c:3333 [inline] kmem_cache_alloc_node_trace+0x144/0x7b0 mm/slab.c:3659 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.0+0x35/0xd0 net/core/skbuff.c:137 __alloc_skb+0xca/0x4c0 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] new_skb+0x24/0x1c0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline] aoecmd_cfg+0x155/0x570 drivers/block/aoe/aoecmd.c:1392 discover_timer drivers/block/aoe/aoemain.c:44 [inline] discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:21 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1636 [inline] __run_timers kernel/time/timer.c:1604 [inline] run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649 __do_softirq+0x254/0x9bf kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x15b/0x1a0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:compound_head include/linux/page-flags.h:149 [inline] RIP: 0010:PageAnon include/linux/page-flags.h:406 [inline] RIP: 0010:zap_pte_range mm/memory.c:1332 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1444 [inline] RIP: 0010:zap_pud_range mm/memory.c:1473 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1494 [inline] RIP: 0010:unmap_page_range+0x8e8/0x1930 mm/memory.c:1515 RSP: 0018:ffff888204ae77d8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: ffffea0007bc1160 RBX: dffffc0000000000 RCX: ffff888204ae79d8 RDX: 0000000000000000 RSI: ffff888204ae79d8 RDI: ffff888204ae79f0 RBP: ffffea0007c17dc0 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888081c84a30 R11: ffff888081c84180 R12: 0000000000517000 R13: ffff88820dc4c8b0 R14: ffffea0007c17de0 R15: 0000000000516000 unmap_single_vma+0x147/0x2b0 mm/memory.c:1560 unmap_vmas+0x9d/0x160 mm/memory.c:1590 exit_mmap+0x26d/0x4b0 mm/mmap.c:3056 __mmput kernel/fork.c:930 [inline] mmput+0x103/0x420 kernel/fork.c:951 exit_mm kernel/exit.c:545 [inline] do_exit+0x933/0x2b00 kernel/exit.c:845 do_group_exit+0x100/0x310 kernel/exit.c:955 get_signal+0x385/0x1ca0 kernel/signal.c:2423 do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fb7471bcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00000000004ea260 RCX: 000000000045c829 RDX: 0000000020000100 RSI: 0000000040247007 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000045a R14: 00000000004c70a1 R15: 00007fb7471bd6d4 Code: 08 41 bd f4 ff ff ff e8 ec bf ee ff 48 c7 05 86 f0 fe 08 00 00 00 00 e9 be ed ff ff 90 65 48 8b 04 25 40 ee 01 00 48 85 c0 74 1a <65> 8b 15 fb a7 a7 7e 81 e2 00 01 1f 00 75 0b 8b 90 58 13 00 00 device geneve0 left promiscuous mode bridge7: port 2(geneve0) entered disabled state device bridge_slave_0 left promiscuous mode bridge4: port 1(bridge_slave_0) entered disabled state batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode team0 (unregistering): Port device veth15 removed team0 (unregistering): Port device veth13 removed team0 (unregistering): Port device veth11 removed device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 chnl_net:caif_netlink_parms(): no params data found IPVS: ftp: loaded support on port[0] = 21 chnl_net:caif_netlink_parms(): no params data found bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode bond0: Enslaving bond_slave_0 as an active interface with an up link bond0: Enslaving bond_slave_1 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added chnl_net:caif_netlink_parms(): no params data found IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode batman_adv: batadv0: Adding interface: batadv_slave_0 batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active batman_adv: batadv0: Adding interface: batadv_slave_1 batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready bond0: Enslaving bond_slave_0 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready bond0: Enslaving bond_slave_1 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added device hsr_slave_0 entered promiscuous mode device hsr_slave_1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready batman_adv: batadv0: Adding interface: batadv_slave_0 batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode batman_adv: batadv0: Adding interface: batadv_slave_1 batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready bond0: Enslaving bond_slave_0 as an active interface with an up link device hsr_slave_0 entered promiscuous mode device hsr_slave_1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready bond0: Enslaving bond_slave_1 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added batman_adv: batadv0: Adding interface: batadv_slave_0 batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active batman_adv: batadv0: Adding interface: batadv_slave_1 batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active