syzbot


INFO: rcu detected stall in sctp_generate_heartbeat_event

Status: fixed on 2018/07/09 18:05
Reported-by: syzbot+e4a5bbd54260c93014f9@syzkaller.appspotmail.com
Fix commit: 1d88ba1ebb27 sctp: not allow transport timeout value less than HZ/5 for hb_timer
First crash: 1560d, last: 1550d
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sctp_generate_heartbeat_event (3) 4 577d 702d 0/23 auto-closed as invalid on 2021/04/15 02:19
linux-4.14 INFO: rcu detected stall in sctp_generate_heartbeat_event 29 718d 961d 0/1 auto-closed as invalid on 2020/12/24 11:25
upstream INFO: rcu detected stall in sctp_generate_heartbeat_event (2) 1 1048d 1047d 0/23 auto-closed as invalid on 2019/12/30 14:27
upstream INFO: rcu detected stall in sctp_generate_heartbeat_event (4) 1 253d 253d 0/23 closed as invalid on 2022/02/08 10:10

Sample crash report:
INFO: rcu_sched self-detected stall on CPU
	0-...!: (124994 ticks this GP) idle=1ce/1/4611686018427387908 softirq=119624/119624 fqs=43 
	 (t=125000 jiffies g=63019 c=63018 q=326452)
NMI backtrace for cpu 0
CPU: 0 PID: 28061 Comm: syz-executor6 Not tainted 4.17.0-rc5+ #55
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+0x1b9/0x294 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103
 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]
 rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1376
 print_cpu_stall kernel/rcu/tree.c:1525 [inline]
 check_cpu_stall.isra.61.cold.80+0x36c/0x59a kernel/rcu/tree.c:1593
 __rcu_pending kernel/rcu/tree.c:3356 [inline]
 rcu_pending kernel/rcu/tree.c:3401 [inline]
 rcu_check_callbacks+0x21b/0xad0 kernel/rcu/tree.c:2763
 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+0x3e3/0x10a0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
 smp_apic_timer_interrupt+0x15d/0x710 arch/x86/kernel/apic/apic.c:1050
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:667 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:672 [inline]
RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:69 [inline]
RIP: 0010:native_queued_spin_lock_slowpath+0x204/0xde0 kernel/locking/qspinlock.c:305
RSP: 0018:ffff8801dae07390 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffffed003b5c0e8b RCX: 0000000000000004
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801b2ca6888
RBP: ffff8801dae07700 R08: ffffed0036594d12 R09: ffffed0036594d11
R10: ffffed0036594d11 R11: ffff8801b2ca688b R12: ffff8801b2ca6888
R13: ffff8801dae076d8 R14: 0000000000000001 R15: dffffc0000000000
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:674 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:30 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:90 [inline]
 do_raw_spin_lock+0x1a7/0x200 kernel/locking/spinlock_debug.c:113
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x32/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:310 [inline]
 sctp_generate_heartbeat_event+0xa4/0x450 net/sctp/sm_sideeffect.c:386
 call_timer_fn+0x230/0x940 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x79e/0xc50 kernel/time/timer.c:1666
 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692
 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x1d1/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:525 [inline]
 smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
 </IRQ>
RIP: 0010:update_stack_state+0xa/0x670 arch/x86/kernel/unwind_frame.c:208
RSP: 0018:ffff8801abfe6d40 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff8801abfe6e60 RCX: ffff8801abfe6e10
RDX: dffffc0000000000 RSI: ffff8801abfe7260 RDI: ffff8801abfe6e60
RBP: ffff8801abfe6e38 R08: ffff8801abfe6e98 R09: ffff8801b3194780
R10: ffffed00357fcdd6 R11: ffff8801abfe6eb7 R12: 1ffff100357fcdae
R13: ffff8801abfe7260 R14: 1ffff100357fcdb2 R15: ffff8801abfe6eb0
 unwind_next_frame+0x3e/0x50 arch/x86/kernel/unwind_frame.c:287
 __save_stack_trace+0x6e/0xd0 arch/x86/kernel/stacktrace.c:44
 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 slab_post_alloc_hook mm/slab.h:444 [inline]
 slab_alloc_node mm/slab.c:3335 [inline]
 kmem_cache_alloc_node_trace+0x139/0x770 mm/slab.c:3661
 __do_kmalloc_node mm/slab.c:3681 [inline]
 __kmalloc_node+0x33/0x70 mm/slab.c:3689
 kmalloc_node include/linux/slab.h:554 [inline]
 kvmalloc_node+0x6b/0x100 mm/util.c:421
 kvmalloc include/linux/mm.h:550 [inline]
 kvzalloc include/linux/mm.h:558 [inline]
 kvm_page_track_create_memslot+0x2e/0xb0 arch/x86/kvm/page_track.c:43
 kvm_arch_create_memslot+0x2c4/0x4e0 arch/x86/kvm/x86.c:8905
 __kvm_set_memory_region+0x1d1b/0x2e50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:988
 kvm_set_memory_region+0x2e/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1060
 kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1072 [inline]
 kvm_vm_ioctl+0x668/0x1d90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2959
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
 __do_sys_ioctl fs/ioctl.c:708 [inline]
 __se_sys_ioctl fs/ioctl.c:706 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455877
RSP: 002b:00007ff3e2d40098 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 0000000000455877
RDX: 00007ff3e2d40510 RSI: 000000004020ae46 RDI: 0000000000000015
RBP: 0000000020ff6000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000015 R11: 0000000000000246 R12: 00000000fec00000
R13: 0000000000000015 R14: 00000000006febb8 R15: 0000000000000000
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
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
l2tp_core: tunl 4: closing all sessions...
l2tp_core: tunl 4: closing...
IPVS: ftp: loaded support on port[0] = 21
IPVS: stopping master sync thread 10213 ...
IPVS: stopping backup sync thread 9441 ...
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
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
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
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
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
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
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
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
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
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 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 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
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
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
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
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
bond0: Enslaving bond_slave_1 as an active interface with an up link
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
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): veth1_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2018/05/18 03:03 upstream 305bb5521282 738d58ad .config log report
ci-upstream-net-kasan-gce 2018/05/07 22:58 net-next 90278871d4b0 9e0846e8 .config log report