INFO: rcu detected stall in hsr_announce
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syzbot
Dec 17, 2019, 6:42:09 PM12/17/19
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: bfb9e5c0 Linux 4.14.159
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11d1c849e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=d21836ba19f34914
dashboard link: https://syzkaller.appspot.com/bug?extid=58767780977855002f83
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+587677...@syzkaller.appspotmail.com
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=12250, c=12249, q=156)
All QSes seen, last rcu_preempt kthread activity 10502
(4294995203-4294984701), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.4 R running task 27840 16247 7145 0x8000000c
Call Trace:
<IRQ>
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2f0/0x351 kernel/sched/core.c:5143
print_other_cpu_stall kernel/rcu/tree.c:1501 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0xcb1/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:slab_alloc mm/slab.c:3375 [inline]
RIP: 0010:kmem_cache_alloc+0x1d/0x780 mm/slab.c:3550
RSP: 0018:ffff8880aec078d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: ffff88805416c680 RBX: 0000000003ffffff RCX: 1ffffffff0f819ac
RDX: 0000000000000100 RSI: 0000000001080020 RDI: ffff8880a9e19900
RBP: ffff8880aec07938 R08: 0000000000000000 R09: ffff88805416cfc0
R10: ffff88805416cfa0 R11: ffff88805416c680 R12: ffff8880966ec1c0
R13: ffff8880a9e19900 R14: 0000000000000000 R15: 0000000001080020
skb_clone+0x129/0x320 net/core/skbuff.c:1282
dev_queue_xmit_nit+0x2da/0x940 net/core/dev.c:1943
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0xa7/0x8b0 net/core/dev.c:3025
__dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
hsr_xmit net/hsr/hsr_forward.c:237 [inline]
hsr_forward_do net/hsr/hsr_forward.c:295 [inline]
hsr_forward_skb+0xbbe/0x1940 net/hsr/hsr_forward.c:373
protocol 88fb is buggy, dev hsr_slave_0
send_hsr_supervision_frame+0x892/0xec0 net/hsr/hsr_device.c:319
hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
protocol 88fb is buggy, dev hsr_slave_1
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:325 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:288 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1530 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1539 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1535 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1341 [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+0xa67/0x19f0 mm/memory.c:1515
RSP: 0018:ffff88807d63f780 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffffd40002fd058 RBX: dffffc0000000000 RCX: ffff88807d63f990
RDX: 0000000000000000 RSI: ffff88807d63f990 RDI: ffffea00017e82c8
RBP: ffff88807d63f8c0 R08: ffff88807d63f9b8 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88805416c680 R12: ffffea00017e82e0
R13: ffffea00017e82c0 R14: 00007f64944b8000 R15: ffffea00017e82c0
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/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+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a919
RSP: 002b:00007f6493ea3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 000000000045a919
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000016
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6493ea46d4
R13: 00000000004c3ce8 R14: 00000000004d92f0 R15: 00000000ffffffff
rcu_preempt kthread starved for 10502 jiffies! g12250 c12249 f0x2
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29776 8 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
protocol 88fb is buggy, dev hsr_slave_0
INFO: rcu_sched self-detected stall on CPU
0-...: (1 GPs behind) idle=9ba/140000000000002/0 softirq=42981/42988 fqs=18
(t=10503 jiffies g=7369 c=7368 q=6)
rcu_sched kthread starved for 9567 jiffies! g7369 c7368 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task 29776 9 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 16247 Comm: syz-executor.4 Not tainted 4.14.159-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x141/0x189 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:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 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+0x43d/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:console_unlock+0x9f8/0xed0 kernel/printk/printk.c:2405
RSP: 0018:ffff8880aec07788 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: ffff88805416c680 RBX: 0000000000000200 RCX: 1ffff1100a82d9fd
RDX: 0000000000000100 RSI: ffff88805416cfc8 RDI: 0000000000000206
RBP: ffff8880aec07818 R08: ffff88805416c680 R09: ffff88805416cfe8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff83eb68b0 R14: ffffffff8859e530 R15: dffffc0000000000
vprintk_emit kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x1f9/0x600 kernel/printk/printk.c:1888
vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401
printk+0x9e/0xbc kernel/printk/printk.c:1996
dev_queue_xmit_nit.cold+0x3f/0x4b net/core/dev.c:1957
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0xa7/0x8b0 net/core/dev.c:3025
__dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
hsr_xmit net/hsr/hsr_forward.c:237 [inline]
hsr_forward_do net/hsr/hsr_forward.c:295 [inline]
hsr_forward_skb+0xbbe/0x1940 net/hsr/hsr_forward.c:373
send_hsr_supervision_frame+0x892/0xec0 net/hsr/hsr_device.c:319
hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:325 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:288 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1530 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1539 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1535 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1341 [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+0xa67/0x19f0 mm/memory.c:1515
RSP: 0018:ffff88807d63f780 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffffd40002fd058 RBX: dffffc0000000000 RCX: ffff88807d63f990
RDX: 0000000000000000 RSI: ffff88807d63f990 RDI: ffffea00017e82c8
RBP: ffff88807d63f8c0 R08: ffff88807d63f9b8 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88805416c680 R12: ffffea00017e82e0
R13: ffffea00017e82c0 R14: 00007f64944b8000 R15: ffffea00017e82c0
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/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+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a919
RSP: 002b:00007f6493ea3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 000000000045a919
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000016
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6493ea46d4
R13: 00000000004c3ce8 R14: 00000000004d92f0 R15: 00000000ffffffff
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_0
net_ratelimit: 6 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: bfb9e5c0 Linux 4.14.159
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11d1c849e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=d21836ba19f34914
dashboard link: https://syzkaller.appspot.com/bug?extid=58767780977855002f83
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+587677...@syzkaller.appspotmail.com
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=12250, c=12249, q=156)
All QSes seen, last rcu_preempt kthread activity 10502
(4294995203-4294984701), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.4 R running task 27840 16247 7145 0x8000000c
Call Trace:
<IRQ>
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2f0/0x351 kernel/sched/core.c:5143
print_other_cpu_stall kernel/rcu/tree.c:1501 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0xcb1/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:slab_alloc mm/slab.c:3375 [inline]
RIP: 0010:kmem_cache_alloc+0x1d/0x780 mm/slab.c:3550
RSP: 0018:ffff8880aec078d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: ffff88805416c680 RBX: 0000000003ffffff RCX: 1ffffffff0f819ac
RDX: 0000000000000100 RSI: 0000000001080020 RDI: ffff8880a9e19900
RBP: ffff8880aec07938 R08: 0000000000000000 R09: ffff88805416cfc0
R10: ffff88805416cfa0 R11: ffff88805416c680 R12: ffff8880966ec1c0
R13: ffff8880a9e19900 R14: 0000000000000000 R15: 0000000001080020
skb_clone+0x129/0x320 net/core/skbuff.c:1282
dev_queue_xmit_nit+0x2da/0x940 net/core/dev.c:1943
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0xa7/0x8b0 net/core/dev.c:3025
__dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
hsr_xmit net/hsr/hsr_forward.c:237 [inline]
hsr_forward_do net/hsr/hsr_forward.c:295 [inline]
hsr_forward_skb+0xbbe/0x1940 net/hsr/hsr_forward.c:373
protocol 88fb is buggy, dev hsr_slave_0
send_hsr_supervision_frame+0x892/0xec0 net/hsr/hsr_device.c:319
hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
protocol 88fb is buggy, dev hsr_slave_1
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:325 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:288 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1530 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1539 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1535 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1341 [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+0xa67/0x19f0 mm/memory.c:1515
RSP: 0018:ffff88807d63f780 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffffd40002fd058 RBX: dffffc0000000000 RCX: ffff88807d63f990
RDX: 0000000000000000 RSI: ffff88807d63f990 RDI: ffffea00017e82c8
RBP: ffff88807d63f8c0 R08: ffff88807d63f9b8 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88805416c680 R12: ffffea00017e82e0
R13: ffffea00017e82c0 R14: 00007f64944b8000 R15: ffffea00017e82c0
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/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+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a919
RSP: 002b:00007f6493ea3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 000000000045a919
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000016
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6493ea46d4
R13: 00000000004c3ce8 R14: 00000000004d92f0 R15: 00000000ffffffff
rcu_preempt kthread starved for 10502 jiffies! g12250 c12249 f0x2
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29776 8 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
protocol 88fb is buggy, dev hsr_slave_0
INFO: rcu_sched self-detected stall on CPU
0-...: (1 GPs behind) idle=9ba/140000000000002/0 softirq=42981/42988 fqs=18
(t=10503 jiffies g=7369 c=7368 q=6)
rcu_sched kthread starved for 9567 jiffies! g7369 c7368 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task 29776 9 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 16247 Comm: syz-executor.4 Not tainted 4.14.159-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x141/0x189 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:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 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+0x43d/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:console_unlock+0x9f8/0xed0 kernel/printk/printk.c:2405
RSP: 0018:ffff8880aec07788 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: ffff88805416c680 RBX: 0000000000000200 RCX: 1ffff1100a82d9fd
RDX: 0000000000000100 RSI: ffff88805416cfc8 RDI: 0000000000000206
RBP: ffff8880aec07818 R08: ffff88805416c680 R09: ffff88805416cfe8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff83eb68b0 R14: ffffffff8859e530 R15: dffffc0000000000
vprintk_emit kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x1f9/0x600 kernel/printk/printk.c:1888
vprintk_default+0x28/0x30 kernel/printk/printk.c:1963
vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401
printk+0x9e/0xbc kernel/printk/printk.c:1996
dev_queue_xmit_nit.cold+0x3f/0x4b net/core/dev.c:1957
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0xa7/0x8b0 net/core/dev.c:3025
__dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
hsr_xmit net/hsr/hsr_forward.c:237 [inline]
hsr_forward_do net/hsr/hsr_forward.c:295 [inline]
hsr_forward_skb+0xbbe/0x1940 net/hsr/hsr_forward.c:373
send_hsr_supervision_frame+0x892/0xec0 net/hsr/hsr_device.c:319
hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:325 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:288 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1530 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1539 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1535 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1341 [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+0xa67/0x19f0 mm/memory.c:1515
RSP: 0018:ffff88807d63f780 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffffd40002fd058 RBX: dffffc0000000000 RCX: ffff88807d63f990
RDX: 0000000000000000 RSI: ffff88807d63f990 RDI: ffffea00017e82c8
RBP: ffff88807d63f8c0 R08: ffff88807d63f9b8 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88805416c680 R12: ffffea00017e82e0
R13: ffffea00017e82c0 R14: 00007f64944b8000 R15: ffffea00017e82c0
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/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+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a919
RSP: 002b:00007f6493ea3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 000000000045a919
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000016
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6493ea46d4
R13: 00000000004c3ce8 R14: 00000000004d92f0 R15: 00000000ffffffff
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_0
net_ratelimit: 6 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Dec 22, 2019, 3:34:08 AM12/22/19
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: e1f7d50a Linux 4.14.160
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=124fea49e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=46599517442ad9fb
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154e5799e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+587677...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
INFO: rcu_preempt self-detected stall on CPU
1-...: (1 GPs behind) idle=5ba/140000000000002/0 softirq=11023/11027 fqs=1
(t=10500 jiffies g=1401 c=1400 q=1002)
NMI backtrace for cpu 1
CPU: 1 PID: 7154 Comm: syz-executor325 Not tainted 4.14.160-syzkaller #0
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:41 [inline]
RIP: 0010:update_stack_state+0x19d/0x590 arch/x86/kernel/unwind_frame.c:238
RSP: 0018:ffff8880aed07630 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000001 RBX: ffff88807fd8f770 RCX: 1ffff11015da0efb
RDX: ffff8880aed077a8 RSI: ffff88807fd8f770 RDI: ffff8880aed077d8
RBP: ffff8880aed076d8 R08: 0000000000000001 R09: ffff8880aed077f8
R10: ffff8880aed077c8 R11: ffff8880aed077d8 R12: ffffed1015da0ef5
R13: ffff8880aed077a0 R14: 1ffff11015da0ece R15: dffffc0000000000
unwind_next_frame.part.0+0x188/0x8b0 arch/x86/kernel/unwind_frame.c:333
unwind_next_frame+0x3b/0x50 arch/x86/kernel/unwind_frame.c:287
__save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
save_stack+0x45/0xd0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node_trace+0x13c/0x770 mm/slab.c:3659
__do_kmalloc_node mm/slab.c:3681 [inline]
__kmalloc_node_track_caller+0x3d/0x80 mm/slab.c:3696
__kmalloc_reserve.isra.0+0x40/0xe0 net/core/skbuff.c:137
pskb_expand_head+0x116/0xc10 net/core/skbuff.c:1462
__skb_pad+0x200/0x5f0 net/core/skbuff.c:1638
__skb_put_padto include/linux/skbuff.h:3007 [inline]
skb_put_padto include/linux/skbuff.h:3026 [inline]
send_hsr_supervision_frame+0xbcf/0xec0 net/hsr/hsr_device.c:316
RSP: 0018:ffff88807fd8f698 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: ffff88807f926540 RCX: 0000000090259772
RDX: dffffc0000000000 RSI: ffff88807f926de8 RDI: 0000000000000282
RBP: ffff88807fd8f6e0 R08: 0000000000000000 R09: ffff88807f926e08
R10: ffff88807f926de8 R11: ffff88807f926540 R12: ffffffff87f88960
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
lock_page_memcg+0x39/0x220 mm/memcontrol.c:1669
page_remove_file_rmap mm/rmap.c:1211 [inline]
page_remove_rmap+0x19f/0x940 mm/rmap.c:1296
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1444 [inline]
zap_pud_range mm/memory.c:1473 [inline]
zap_p4d_range mm/memory.c:1494 [inline]
unmap_page_range+0xabd/0x19f0 mm/memory.c:1515
RSP: 002b:00007fffbb579618 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000004 RBX: 000000000000000a RCX: 0000000000444379
RDX: 0000000000000000 RSI: 4000000000000001 RDI: 0000000000000002
RBP: 0000000000000000 R08: 00000000004ab9fa R09: 00000000004ab9fa
R10: 00000000004ab9fa R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000404f40 R14: 0000000000000000 R15: 0000000000000000
INFO: rcu_sched detected stalls on CPUs/tasks:
1-...: (0 ticks this GP) idle=5ba/140000000000000/0 softirq=11028/11029
fqs=2
(detected by 0, t=10574 jiffies, g=885, c=884, q=8)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7088 Comm: syz-executor325 Not tainted 4.14.160-syzkaller #0
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:queued_write_lock_slowpath+0x85/0x1d0 kernel/locking/qrwlock.c:130
RSP: 0018:ffff88807ffd70e0 EFLAGS: 00000286
RAX: 00000000000000ff RBX: ffffffff88981df0 RCX: 000000002eea4f87
RDX: 0000000000000000 RSI: ffff8880a9dc8e28 RDI: ffffffff88981df0
RBP: ffff88807ffd7110 R08: 000000000000431d R09: ffffffff89581328
R10: ffff8880a9dc8e28 R11: ffff8880a9dc8580 R12: ffffffff88981df4
R13: fffffbfff11303be R14: 0000000000000000 R15: 0000000000000001
FS: 00000000013dc880(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000046a4d0 CR3: 00000000967b2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
queued_write_lock include/asm-generic/qrwlock.h:134 [inline]
do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203
__raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
_raw_write_lock_bh+0x3b/0x50 kernel/locking/spinlock.c:320
neigh_changeaddr+0x25/0x40 net/core/neighbour.c:287
ndisc_netdev_event+0x83/0x3b0 net/ipv6/ndisc.c:1760
notifier_call_chain+0x111/0x1b0 kernel/notifier.c:93
__raw_notifier_call_chain kernel/notifier.c:394 [inline]
raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
call_netdevice_notifiers_info+0x56/0x70 net/core/dev.c:1671
call_netdevice_notifiers net/core/dev.c:1687 [inline]
dev_set_mac_address net/core/dev.c:6973 [inline]
dev_set_mac_address+0x1d1/0x2b0 net/core/dev.c:6958
do_setlink+0x555/0x2c20 net/core/rtnetlink.c:2047
rtnl_newlink+0x11a7/0x1700 net/core/rtnetlink.c:2651
rtnetlink_rcv_msg+0x3da/0xb70 net/core/rtnetlink.c:4306
netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4318
netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
netlink_unicast+0x44d/0x650 net/netlink/af_netlink.c:1312
netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xce/0x110 net/socket.c:656
SYSC_sendto+0x206/0x310 net/socket.c:1763
SyS_sendto+0x40/0x50 net/socket.c:1731
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x403e33
RSP: 002b:00007fffbb579318 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006ddde0 RCX: 0000000000403e33
RDX: 000000000000002c RSI: 00000000006dde30 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fffbb579320 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000006dde30 R15: 0000000000000003
Code: 0f 84 d4 00 00 00 49 89 dd 49 89 de 41 bf 01 00 00 00 49 c1 ed 03 41
83 e6 07 48 b8 00 00 00 00 00 fc ff df 49 01 c5 eb 02 f3 90 <41> 0f b6 45
00 44 38 f0 7f 08 84 c0 0f 85 f7 00 00 00 0f b6 03
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
8021q: adding VLAN 0 to HW filter on device bond0
IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
8021q: adding VLAN 0 to HW filter on device team0
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready
hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully
working HSR network
hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully
working HSR network
IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
HEAD commit: e1f7d50a Linux 4.14.160
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=124fea49e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=46599517442ad9fb
dashboard link: https://syzkaller.appspot.com/bug?extid=58767780977855002f83
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11998649e00000
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154e5799e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+587677...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
INFO: rcu_preempt self-detected stall on CPU
1-...: (1 GPs behind) idle=5ba/140000000000002/0 softirq=11023/11027 fqs=1
(t=10500 jiffies g=1401 c=1400 q=1002)
NMI backtrace for cpu 1
CPU: 1 PID: 7154 Comm: syz-executor325 Not tainted 4.14.160-syzkaller #0
RIP: 0010:update_stack_state+0x19d/0x590 arch/x86/kernel/unwind_frame.c:238
RSP: 0018:ffff8880aed07630 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000001 RBX: ffff88807fd8f770 RCX: 1ffff11015da0efb
RDX: ffff8880aed077a8 RSI: ffff88807fd8f770 RDI: ffff8880aed077d8
RBP: ffff8880aed076d8 R08: 0000000000000001 R09: ffff8880aed077f8
R10: ffff8880aed077c8 R11: ffff8880aed077d8 R12: ffffed1015da0ef5
R13: ffff8880aed077a0 R14: 1ffff11015da0ece R15: dffffc0000000000
unwind_next_frame.part.0+0x188/0x8b0 arch/x86/kernel/unwind_frame.c:333
unwind_next_frame+0x3b/0x50 arch/x86/kernel/unwind_frame.c:287
__save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
save_stack+0x45/0xd0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node_trace+0x13c/0x770 mm/slab.c:3659
__do_kmalloc_node mm/slab.c:3681 [inline]
__kmalloc_node_track_caller+0x3d/0x80 mm/slab.c:3696
__kmalloc_reserve.isra.0+0x40/0xe0 net/core/skbuff.c:137
pskb_expand_head+0x116/0xc10 net/core/skbuff.c:1462
__skb_pad+0x200/0x5f0 net/core/skbuff.c:1638
__skb_put_padto include/linux/skbuff.h:3007 [inline]
skb_put_padto include/linux/skbuff.h:3026 [inline]
send_hsr_supervision_frame+0xbcf/0xec0 net/hsr/hsr_device.c:316
hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:lock_acquire+0x1ea/0x430 kernel/locking/lockdep.c:3997
[inline]
RSP: 0018:ffff88807fd8f698 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2d29 RBX: ffff88807f926540 RCX: 0000000090259772
RDX: dffffc0000000000 RSI: ffff88807f926de8 RDI: 0000000000000282
RBP: ffff88807fd8f6e0 R08: 0000000000000000 R09: ffff88807f926e08
R10: ffff88807f926de8 R11: ffff88807f926540 R12: ffffffff87f88960
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
lock_page_memcg+0x39/0x220 mm/memcontrol.c:1669
page_remove_file_rmap mm/rmap.c:1211 [inline]
page_remove_rmap+0x19f/0x940 mm/rmap.c:1296
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1444 [inline]
zap_pud_range mm/memory.c:1473 [inline]
zap_p4d_range mm/memory.c:1494 [inline]
unmap_page_range+0xabd/0x19f0 mm/memory.c:1515
unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/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+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x444379
unmap_vmas+0xac/0x170 mm/memory.c:1590
exit_mmap+0x285/0x4e0 mm/mmap.c:3062
__mmput kernel/fork.c:930 [inline]
mmput+0x114/0x440 kernel/fork.c:951
exit_mm kernel/exit.c:545 [inline]
do_exit+0x6fc/0x2c80 kernel/exit.c:841
do_group_exit+0x111/0x330 kernel/exit.c:951
get_signal+0x381/0x1cd0 kernel/signal.c:2413
do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x15c/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+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RSP: 002b:00007fffbb579618 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000004 RBX: 000000000000000a RCX: 0000000000444379
RDX: 0000000000000000 RSI: 4000000000000001 RDI: 0000000000000002
RBP: 0000000000000000 R08: 00000000004ab9fa R09: 00000000004ab9fa
R10: 00000000004ab9fa R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000404f40 R14: 0000000000000000 R15: 0000000000000000
INFO: rcu_sched detected stalls on CPUs/tasks:
1-...: (0 ticks this GP) idle=5ba/140000000000000/0 softirq=11028/11029
fqs=2
(detected by 0, t=10574 jiffies, g=885, c=884, q=8)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7088 Comm: syz-executor325 Not tainted 4.14.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
task: ffff8880a9dc8580 task.stack: ffff88807ffd0000
Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:queued_write_lock_slowpath+0x85/0x1d0 kernel/locking/qrwlock.c:130
RSP: 0018:ffff88807ffd70e0 EFLAGS: 00000286
RAX: 00000000000000ff RBX: ffffffff88981df0 RCX: 000000002eea4f87
RDX: 0000000000000000 RSI: ffff8880a9dc8e28 RDI: ffffffff88981df0
RBP: ffff88807ffd7110 R08: 000000000000431d R09: ffffffff89581328
R10: ffff8880a9dc8e28 R11: ffff8880a9dc8580 R12: ffffffff88981df4
R13: fffffbfff11303be R14: 0000000000000000 R15: 0000000000000001
FS: 00000000013dc880(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000046a4d0 CR3: 00000000967b2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
queued_write_lock include/asm-generic/qrwlock.h:134 [inline]
do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203
__raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
_raw_write_lock_bh+0x3b/0x50 kernel/locking/spinlock.c:320
neigh_changeaddr+0x25/0x40 net/core/neighbour.c:287
ndisc_netdev_event+0x83/0x3b0 net/ipv6/ndisc.c:1760
notifier_call_chain+0x111/0x1b0 kernel/notifier.c:93
__raw_notifier_call_chain kernel/notifier.c:394 [inline]
raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
call_netdevice_notifiers_info+0x56/0x70 net/core/dev.c:1671
call_netdevice_notifiers net/core/dev.c:1687 [inline]
dev_set_mac_address net/core/dev.c:6973 [inline]
dev_set_mac_address+0x1d1/0x2b0 net/core/dev.c:6958
do_setlink+0x555/0x2c20 net/core/rtnetlink.c:2047
rtnl_newlink+0x11a7/0x1700 net/core/rtnetlink.c:2651
rtnetlink_rcv_msg+0x3da/0xb70 net/core/rtnetlink.c:4306
netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4318
netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
netlink_unicast+0x44d/0x650 net/netlink/af_netlink.c:1312
netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xce/0x110 net/socket.c:656
SYSC_sendto+0x206/0x310 net/socket.c:1763
SyS_sendto+0x40/0x50 net/socket.c:1731
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x403e33
RSP: 002b:00007fffbb579318 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006ddde0 RCX: 0000000000403e33
RDX: 000000000000002c RSI: 00000000006dde30 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fffbb579320 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000006dde30 R15: 0000000000000003
Code: 0f 84 d4 00 00 00 49 89 dd 49 89 de 41 bf 01 00 00 00 49 c1 ed 03 41
83 e6 07 48 b8 00 00 00 00 00 fc ff df 49 01 c5 eb 02 f3 90 <41> 0f b6 45
00 44 38 f0 7f 08 84 c0 0f 85 f7 00 00 00 0f b6 03
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
8021q: adding VLAN 0 to HW filter on device bond0
IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
8021q: adding VLAN 0 to HW filter on device team0
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready
hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully
working HSR network
hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully
working HSR network
IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
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