audit: type=1804 audit(1584894063.636:47): pid=8192 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="" name="/root/syzkaller-testdir006519295/syzkaller.HUAf1k/30/bus" dev="sda1" ino=16627 res=1
INFO: rcu_preempt self-detected stall on CPU
0-...: (10500 ticks this GP) idle=74e/140000000000002/0 softirq=13107/13107 fqs=0
(t=10500 jiffies g=2138 c=2137 q=646)
rcu_preempt kthread starved for 10500 jiffies! g2138 c2137 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29568 8 2 0x80000000
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 8157 Comm: syz-executor.1 Not tainted 4.14.174-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x13e/0x194 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x139/0x17e lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x490/0xdaa kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:__orc_find+0x5e/0xf0 arch/x86/kernel/unwind_orc.c:47
RSP: 0018:ffff8880aea07170 EFLAGS: 00000203 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000003 RBX: ffffffff88a358dc RCX: ffffffff819084f9
RDX: 0000000000000001 RSI: ffffffff88f2d63e RDI: ffffffff88a358b0
RBP: ffffffff88a358e0 R08: ffffffff88f2d69e R09: ffff88804959faa0
R10: ffff8880aea0729d R11: 0000000000058071 R12: ffffffff88a358ec
R13: ffffffff88a358b0 R14: ffffffff88a358dc R15: dffffc0000000000
orc_find arch/x86/kernel/unwind_orc.c:121 [inline]
unwind_next_frame+0x5de/0x17a0 arch/x86/kernel/unwind_orc.c:348
__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 mm/slab.c:3390 [inline]
kmem_cache_alloc+0x114/0x770 mm/slab.c:3550
kmem_cache_zalloc include/linux/slab.h:651 [inline]
fill_pool lib/debugobjects.c:110 [inline]
__debug_object_init+0x5b7/0x830 lib/debugobjects.c:341
debug_object_init lib/debugobjects.c:393 [inline]
debug_object_activate+0x274/0x450 lib/debugobjects.c:474
debug_rcu_head_queue kernel/rcu/rcu.h:152 [inline]
__call_rcu.constprop.0+0x31/0x7e0 kernel/rcu/tree.c:3050
dst_release+0x56/0x80 net/core/dst.c:188
refdst_drop include/net/dst.h:286 [inline]
skb_dst_drop include/net/dst.h:298 [inline]
__dev_queue_xmit+0x17df/0x25c0 net/core/dev.c:3484
neigh_hh_output include/net/neighbour.h:490 [inline]
neigh_output include/net/neighbour.h:498 [inline]
ip6_finish_output2+0x1085/0x2150 net/ipv6/ip6_output.c:120
ip6_finish_output+0x4d9/0xaf0 net/ipv6/ip6_output.c:154
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip6_output+0x1c9/0x650 net/ipv6/ip6_output.c:171
dst_output include/net/dst.h:462 [inline]
NF_HOOK include/linux/netfilter.h:250 [inline]
ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483
ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3761
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:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3611
RSP: 0018:ffff88804959f920 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2cd3 RBX: dffffc0000000000 RCX: 1ffff110092b29a4
RDX: 0000000000000000 RSI: ffff888049594d28 RDI: ffff888049594cfc
RBP: ffffed10092b2890 R08: 000000384558328e R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888049594480
R13: ffffffff87d16698 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:150 [inline]
RIP: 0010:qlist_free_all+0xfc/0x140 mm/kasan/quarantine.c:166
RSP: 0018:ffff88804959f9f8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000007 RBX: ffff88809454a040 RCX: 1ffff110092b29a4
RDX: 0000000000000000 RSI: ffff888049594d28 RDI: 0000000000000282
RBP: 0000000000000000 R08: 1ffff11013018a00 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888093e7f500
R13: ffff88804959fa30 R14: ffff8880a9a49d80 R15: 0000000000000282
quarantine_reduce+0x140/0x170 mm/kasan/quarantine.c:259
kasan_kmalloc+0x95/0xe0 mm/kasan/kasan.c:536
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc mm/slab.c:3390 [inline]
kmem_cache_alloc+0x114/0x770 mm/slab.c:3550
__d_alloc+0x2a/0x9b0 fs/dcache.c:1623
d_alloc+0x46/0x250 fs/dcache.c:1710
__lookup_hash fs/namei.c:1571 [inline]
__lookup_hash+0x51/0x180 fs/namei.c:1563
lookup_one_len+0x27c/0x3a0 fs/namei.c:2539
start_creating fs/debugfs/inode.c:314 [inline]
start_creating+0xa1/0x1c0 fs/debugfs/inode.c:290
__debugfs_create_file+0x4f/0x3c0 fs/debugfs/inode.c:353
kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:622 [inline]
kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3298 [inline]
kvm_dev_ioctl+0xd71/0x1480 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3321
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f2be81a5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2be81a66d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000038f R14: 00000000004c6057 R15: 000000000076bf0c
INFO: rcu_sched detected stalls on CPUs/tasks:
0-...: (10502 ticks this GP) idle=74e/140000000000002/0 softirq=13107/13107 fqs=0
(detected by 1, t=10589 jiffies, g=1535, c=1534, q=4)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8157 Comm: syz-executor.1 Not tainted 4.14.174-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888049594480 task.stack: ffff888049598000
RIP: 0010:check_preemption_disabled+0x15/0x240 lib/smp_processor_id.c:14
RSP: 0018:ffff8880aea07570 EFLAGS: 00000006
RAX: ffff888049594480 RBX: ffff8880aea1f5f0 RCX: 1ffff11015d43ec0
RDX: 0000000000000100 RSI: ffffffff86e45700 RDI: ffffffff86e45740
RBP: ffffffff86e45740 R08: 00000050ed361da0 R09: ffff88821fff7008
R10: ffff88821fff7010 R11: 0000000000000001 R12: 0000000000001210
R13: ffffffff86e45700 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f2be81a6700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31828000 CR3: 0000000085bdf000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
irqtime_account_delta kernel/sched/cputime.c:40 [inline]
irqtime_account_irq+0xc5/0x280 kernel/sched/cputime.c:75
account_irq_enter_time include/linux/vtime.h:108 [inline]
irq_enter+0x62/0xd0 kernel/softirq.c:353
entering_irq arch/x86/include/asm/apic.h:629 [inline]
entering_ack_irq arch/x86/include/asm/apic.h:635 [inline]
smp_apic_timer_interrupt+0x1f/0x5e0 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:unwind_next_frame+0xad7/0x17a0 arch/x86/kernel/unwind_orc.c:467
RSP: 0018:ffff8880aea076c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8880aea07770 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880aea07c98
RBP: 1ffff11015d40edf R08: ffffffff89417d7c R09: ffff8880aea07c90
R10: ffff8880aea077a5 R11: 0000000000058071 R12: ffffffff89417d78
R13: ffff8880aea077a8 R14: ffff8880aea07ca0 R15: 0000000000000002
__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
kmem_cache_alloc_trace+0x14d/0x7b0 mm/slab.c:3618
kmalloc include/linux/slab.h:488 [inline]
dst_cow_metrics_generic+0x48/0x130 net/core/dst.c:210
ipv6_cow_metrics+0x70/0x180 net/ipv6/route.c:196
dst_metrics_write_ptr include/net/dst.h:146 [inline]
dst_metric_set include/net/dst.h:207 [inline]
icmp6_dst_alloc+0x3f6/0x580 net/ipv6/route.c:1780
ndisc_send_skb+0xc0f/0x11e0 net/ipv6/ndisc.c:463
ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3761
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:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3611
RSP: 0018:ffff88804959f920 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2cd3 RBX: dffffc0000000000 RCX: 1ffff110092b29a4
RDX: 0000000000000000 RSI: ffff888049594d28 RDI: ffff888049594cfc
RBP: ffffed10092b2890 R08: 000000384558328e R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888049594480
R13: ffffffff87d16698 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:150 [inline]
RIP: 0010:qlist_free_all+0xfc/0x140 mm/kasan/quarantine.c:166
RSP: 0018:ffff88804959f9f8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000007 RBX: ffff88809454a040 RCX: 1ffff110092b29a4
RDX: 0000000000000000 RSI: ffff888049594d28 RDI: 0000000000000282
RBP: 0000000000000000 R08: 1ffff11013018a00 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888093e7f500
R13: ffff88804959fa30 R14: ffff8880a9a49d80 R15: 0000000000000282
quarantine_reduce+0x140/0x170 mm/kasan/quarantine.c:259
kasan_kmalloc+0x95/0xe0 mm/kasan/kasan.c:536
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc mm/slab.c:3390 [inline]
kmem_cache_alloc+0x114/0x770 mm/slab.c:3550
__d_alloc+0x2a/0x9b0 fs/dcache.c:1623
d_alloc+0x46/0x250 fs/dcache.c:1710
__lookup_hash fs/namei.c:1571 [inline]
__lookup_hash+0x51/0x180 fs/namei.c:1563
lookup_one_len+0x27c/0x3a0 fs/namei.c:2539
start_creating fs/debugfs/inode.c:314 [inline]
start_creating+0xa1/0x1c0 fs/debugfs/inode.c:290
__debugfs_create_file+0x4f/0x3c0 fs/debugfs/inode.c:353
kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:622 [inline]
kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3298 [inline]
kvm_dev_ioctl+0xd71/0x1480 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3321
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f2be81a5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2be81a66d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000038f R14: 00000000004c6057 R15: 000000000076bf0c
Code: 85 fe e9 18 f2 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 49 89 f5 41 54 55 48 89 fd 53 e8 5b 21 5c fe <65> 44 8b 25 03 5b 03 7d 65 8b 05 9c c7 03 7d a9 ff ff ff 7f 74
rcu_sched kthread starved for 10590 jiffies! g1535 c1534 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_sched R running task 29984 9 2 0x80000000
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404