rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10500 ticks this GP) idle=861c/1/0x4000000000000000 softirq=22525/22525 fqs=0
rcu: (t=10500 jiffies g=25037 q=17 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g25037 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=16398
rcu: rcu_preempt kthread starved for 10500 jiffies! g25037 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:25176 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1609
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1808
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 8237 Comm: syz-executor.5 Not tainted 6.4.0-rc4-syzkaller-00276-ge5282a7d8f6b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
RIP: 0010:kvm_wait+0x1c0/0x200 arch/x86/kernel/kvm.c:1060
Code: 03 42 0f b6 04 28 84 c0 75 46 45 0f b6 34 24 e8 56 fe 55 00 44 3a 74 24 1c 75 14 66 90 0f 00 2d f6 df ab 09 f3 0f 1e fa fb f4 c0 fe ff ff fb e9 ba fe ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 4c
RSP: 0018:ffffc90000007860 EFLAGS: 00000246
RAX: 2c214c443eef4800 RBX: 1ffff92000000f10 RCX: ffffffff816b847a
RDX: dffffc0000000000 RSI: ffffffff8aea8e20 RDI: ffffffff8b384400
RBP: ffffc90000007930 R08: dffffc0000000000 R09: fffffbfff2065265
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880439520f0
R13: dffffc0000000000 R14: 0000000000000003 R15: ffffc900000078a0
FS: 00007f1c97871700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020008030 CR3: 000000007d830000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:598 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x6ff/0xc50 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x297/0x3a0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:350 [inline]
fq_pie_timer+0x8b/0x270 net/sched/sch_fq_pie.c:377
call_timer_fn+0x178/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x64f/0x860 kernel/time/timer.c:2022
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
__do_softirq+0x2ab/0x908 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x25a/0x520 kernel/locking/lockdep.c:5709
Code: 2b 00 74 08 4c 89 f7 e8 54 3e 78 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90005e87580 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000bd0ebc RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8aea9fa0 RDI: ffffffff8b384400
RBP: ffffc90005e876d8 R08: dffffc0000000000 R09: fffffbfff2065261
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000bd0eb8
R13: dffffc0000000000 R14: ffffc90005e875e0 R15: 0000000000000246
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
unix_dgram_sendmsg+0xc78/0x2050 net/unix/af_unix.c:1985
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg net/socket.c:747 [inline]
____sys_sendmsg+0x58f/0x890 net/socket.c:2503
___sys_sendmsg net/socket.c:2557 [inline]
__sys_sendmmsg+0x3af/0x730 net/socket.c:2643
__do_sys_sendmmsg net/socket.c:2672 [inline]
__se_sys_sendmmsg net/socket.c:2669 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2669
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c96a8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c97871168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f1c96babf80 RCX: 00007f1c96a8c169
RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000005
RBP: 00007f1c96ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc52b99d5f R14: 00007f1c97871300 R15: 0000000000022000
CPU: 0 PID: 8237 Comm: syz-executor.5 Not tainted 6.4.0-rc4-syzkaller-00276-ge5282a7d8f6b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
RIP: 0010:kvm_wait+0x1c0/0x200 arch/x86/kernel/kvm.c:1060
Code: 03 42 0f b6 04 28 84 c0 75 46 45 0f b6 34 24 e8 56 fe 55 00 44 3a 74 24 1c 75 14 66 90 0f 00 2d f6 df ab 09 f3 0f 1e fa fb f4 c0 fe ff ff fb e9 ba fe ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 4c
RSP: 0018:ffffc90000007860 EFLAGS: 00000246
RAX: 2c214c443eef4800 RBX: 1ffff92000000f10 RCX: ffffffff816b847a
RDX: dffffc0000000000 RSI: ffffffff8aea8e20 RDI: ffffffff8b384400
RBP: ffffc90000007930 R08: dffffc0000000000 R09: fffffbfff2065265
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880439520f0
R13: dffffc0000000000 R14: 0000000000000003 R15: ffffc900000078a0
FS: 00007f1c97871700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020008030 CR3: 000000007d830000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:598 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x6ff/0xc50 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x297/0x3a0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:350 [inline]
fq_pie_timer+0x8b/0x270 net/sched/sch_fq_pie.c:377
call_timer_fn+0x178/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x64f/0x860 kernel/time/timer.c:2022
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
__do_softirq+0x2ab/0x908 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x25a/0x520 kernel/locking/lockdep.c:5709
Code: 2b 00 74 08 4c 89 f7 e8 54 3e 78 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90005e87580 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000bd0ebc RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8aea9fa0 RDI: ffffffff8b384400
RBP: ffffc90005e876d8 R08: dffffc0000000000 R09: fffffbfff2065261
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000bd0eb8
R13: dffffc0000000000 R14: ffffc90005e875e0 R15: 0000000000000246
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
unix_dgram_sendmsg+0xc78/0x2050 net/unix/af_unix.c:1985
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg net/socket.c:747 [inline]
____sys_sendmsg+0x58f/0x890 net/socket.c:2503
___sys_sendmsg net/socket.c:2557 [inline]
__sys_sendmmsg+0x3af/0x730 net/socket.c:2643
__do_sys_sendmmsg net/socket.c:2672 [inline]
__se_sys_sendmmsg net/socket.c:2669 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2669
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c96a8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c97871168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f1c96babf80 RCX: 00007f1c96a8c169
RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000005
RBP: 00007f1c96ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc52b99d5f R14: 00007f1c97871300 R15: 0000000000022000
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8241 Comm: syz-executor.5 Not tainted 6.4.0-rc4-syzkaller-00276-ge5282a7d8f6b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:fq_pie_qdisc_dequeue+0x10c/0xa40 net/sched/sch_fq_pie.c:246
Code: f8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 a8 50 12 f9 4d 8b 27 49 8d 6c 24 f0 49 89 ee 49 c1 ee 03 41 0f b6 04 1e <84> c0 0f 85 4b 06 00 00 48 89 6c 24 28 8b 6d 00 bf 01 00 00 00 89
RSP: 0018:ffffc900001e0328 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88807d3e9dc0
RDX: 0000000000000302 RSI: ffff8880439522e0 RDI: ffff88802d1129d0
RBP: ffff88802d1129c0 R08: ffffffff88d103b8 R09: ffffffff88ba4a5e
R10: 0000000000000002 R11: ffff88807d3e9dc0 R12: ffff88802d1129d0
R13: ffff888043952000 R14: 1ffff11005a22538 R15: ffff8880439522e0
FS: 00007f1c97850700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000203a5030 CR3: 000000007d830000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
dequeue_skb net/sched/sch_generic.c:292 [inline]
qdisc_restart net/sched/sch_generic.c:397 [inline]
__qdisc_run+0x26e/0x20a0 net/sched/sch_generic.c:415
__dev_xmit_skb net/core/dev.c:3868 [inline]
__dev_queue_xmit+0x1397/0x38b0 net/core/dev.c:4210
neigh_output include/net/neighbour.h:544 [inline]
ip6_finish_output2+0xf80/0x1560 net/ipv6/ip6_output.c:134
__ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
ip6_finish_output+0x6b0/0xa80 net/ipv6/ip6_output.c:206
dst_output include/net/dst.h:458 [inline]
NF_HOOK include/linux/netfilter.h:303 [inline]
ndisc_send_skb+0xb08/0x1390 net/ipv6/ndisc.c:508
addrconf_rs_timer+0x35b/0x620 net/ipv6/addrconf.c:3936
call_timer_fn+0x178/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x64f/0x860 kernel/time/timer.c:2022
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
__do_softirq+0x2ab/0x908 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0xa/0x520 kernel/locking/lockdep.c:5673
Code: f3 0f 1e fa 65 8b 05 3d a4 98 7e a9 00 ff ff 00 0f 95 c0 c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 55 48 89 e5 41 57 <41> 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 20 01 00 00 4c 89 4c 24
RSP: 0018:ffffc90005ef7560 EFLAGS: 00000246
RAX: ffff8880463fd528 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880463fd590
RBP: ffffc90005ef7568 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90005ef7640 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880463fd590 R15: ffff8880463fd528
__mutex_lock_common+0x1d8/0x2530 kernel/locking/mutex.c:603
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
__unix_dgram_recvmsg+0x251/0x1260 net/unix/af_unix.c:2449
sock_recvmsg_nosec+0x86/0xd0 net/socket.c:1019
____sys_recvmsg+0x475/0x570 net/socket.c:2720
___sys_recvmsg net/socket.c:2764 [inline]
do_recvmmsg+0x471/0xad0 net/socket.c:2858
__sys_recvmmsg net/socket.c:2937 [inline]
__do_sys_recvmmsg net/socket.c:2960 [inline]
__se_sys_recvmmsg net/socket.c:2953 [inline]
__x64_sys_recvmmsg+0x199/0x240 net/socket.c:2953
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c96a8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c97850168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f1c96bac050 RCX: 00007f1c96a8c169
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007f1c96ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc52b99d5f R14: 00007f1c97850300 R15: 0000000000022000