INFO: rcu_preempt self-detected stall on CPU
1-...: (1 GPs behind) idle=a72/140000000000002/0 softirq=115236/115237 fqs=0
(t=10500 jiffies g=34206 c=34205 q=106)
rcu_preempt kthread starved for 10500 jiffies! g34206 c34205 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29920 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 1
CPU: 1 PID: 14709 Comm: syz-executor.1 Not tainted 4.14.177-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 arch/x86/kernel/unwind_orc.c:112 [inline]
RIP: 0010:unwind_next_frame+0x551/0x17a0 arch/x86/kernel/unwind_orc.c:348
RSP: 0018:ffff8880aeb077c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 00000000000475b0 RBX: ffff8880aeb07878 RCX: 00000000000f55dc
RDX: 0000000000000003 RSI: 00000000000475b1 RDI: ffffffff8967eb10
RBP: 1ffff11015d60f00 R08: 0000000000000001 R09: ffff8880aeb07be8
R10: ffff8880aeb078ad R11: 0000000000058071 R12: ffffffff8575b063
R13: ffff8880aeb078b0 R14: ffff8880aeb078c0 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
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node+0x135/0x7a0 mm/slab.c:3640
__alloc_skb+0x9a/0x4c0 net/core/skbuff.c:193
alloc_skb include/linux/skbuff.h:980 [inline]
ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:402
ndisc_send_rs+0x2ea/0x630 net/ipv6/ndisc.c:661
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3765
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+0xab/0x140 kernel/sched/core.c:3611
RSP: 0018:ffff8882084af330 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2cd3 RBX: dffffc0000000000 RCX: 1ffff1100640cd24
RDX: 0000000000000000 RSI: ffff888032066900 RDI: 0000000000000001
RBP: ffffed100640cc00 R08: 0000011ce5a3fdfc R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888032066000
R13: ffffffff87d16698 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4a/0x50 kernel/kcov.c:90
RSP: 0018:ffff8882084af408 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: 000000004000003f RCX: ffffc90006e9e000
RDX: 000000000002c400 RSI: ffffffff85652d39 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000004
R10: ffff888032066928 R11: ffff888032066000 R12: ffff88809e614810
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
inet_diag_dump_icsk+0x619/0x14e0 net/ipv4/inet_diag.c:957
__inet_diag_dump+0x89/0x110 net/ipv4/inet_diag.c:1049
netlink_dump+0x3da/0xab0 net/netlink/af_netlink.c:2203
__netlink_dump_start+0x4e2/0x740 net/netlink/af_netlink.c:2300
netlink_dump_start include/linux/netlink.h:217 [inline]
inet_diag_handler_cmd+0x1ea/0x290 net/ipv4/inet_diag.c:1170
__sock_diag_cmd net/core/sock_diag.c:231 [inline]
sock_diag_rcv_msg+0x28d/0x390 net/core/sock_diag.c:263
netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
sock_diag_rcv+0x26/0x40 net/core/sock_diag.c:274
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xc5/0x100 net/socket.c:656
sock_write_iter+0x22c/0x370 net/socket.c:925
call_write_iter include/linux/fs.h:1778 [inline]
do_iter_readv_writev+0x3df/0x600 fs/read_write.c:675
do_iter_write fs/read_write.c:954 [inline]
do_iter_write+0x152/0x550 fs/read_write.c:935
vfs_writev+0x170/0x2a0 fs/read_write.c:999
do_writev+0xfc/0x2c0 fs/read_write.c:1034
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f1773f92c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000050cfc0 RCX: 000000000045c829
RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000d14 R14: 00000000004cb1f4 R15: 00007f1773f936d4
INFO: rcu_sched detected stalls on CPUs/tasks:
1-...: (10502 ticks this GP) idle=a72/140000000000002/0 softirq=115237/115237 fqs=0
(detected by 0, t=10502 jiffies, g=17891, c=17890, q=0)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14709 Comm: syz-executor.1 Not tainted 4.14.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888032066000 task.stack: ffff8882084a8000
RIP: 0010:rcu_is_watching+0x0/0xb0 kernel/rcu/tree.c:1126
RSP: 0018:ffff8880aeb07228 EFLAGS: 00000006
RAX: ffff888032066000 RBX: 1ffff11015d60e46 RCX: 1ffffffff10279b4
RDX: 0000000000010100 RSI: ffff888032066950 RDI: ffff888032066884
RBP: ffff8880aeb07380 R08: 0000000000000000 R09: 00000000000a6012
R10: ffff888032066950 R11: ffff888032066000 R12: ffff8880a56e1740
R13: ffff8880aeb07380 R14: ffff8880aeb07718 R15: 0000000000000000
FS: 00007f1773f93700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020045000 CR3: 0000000088471000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock include/linux/rcupdate.h:630 [inline]
__perf_event_output kernel/events/core.c:6268 [inline]
perf_event_output_forward+0x1b2/0x1f0 kernel/events/core.c:6288
__perf_event_overflow+0x113/0x310 kernel/events/core.c:7526
perf_swevent_hrtimer+0x220/0x350 kernel/events/core.c:8736
__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:unwind_next_frame+0x94a/0x17a0 arch/x86/kernel/unwind_orc.c:356
RSP: 0018:ffff8880aeb077c8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff10
RAX: ffffffff89418429 RBX: ffff8880aeb07878 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 1ffffffff1283085 RDI: 0000000000000001
RBP: 1ffff11015d60f00 R08: ffffffff8941842c R09: ffff8880aeb07c68
R10: ffff8880aeb078ad R11: 0000000000058071 R12: ffffffff89418428
R13: ffff8880aeb078b0 R14: ffff8880aeb078c0 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
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc_node mm/slab.c:3333 [inline]
kmem_cache_alloc_node+0x135/0x7a0 mm/slab.c:3640
__alloc_skb+0x9a/0x4c0 net/core/skbuff.c:193
alloc_skb include/linux/skbuff.h:980 [inline]
ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:402
ndisc_send_rs+0x2ea/0x630 net/ipv6/ndisc.c:661
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3765
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+0xab/0x140 kernel/sched/core.c:3611
RSP: 0018:ffff8882084af330 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2cd3 RBX: dffffc0000000000 RCX: 1ffff1100640cd24
RDX: 0000000000000000 RSI: ffff888032066900 RDI: 0000000000000001
RBP: ffffed100640cc00 R08: 0000011ce5a3fdfc R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888032066000
R13: ffffffff87d16698 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4a/0x50 kernel/kcov.c:90
RSP: 0018:ffff8882084af408 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: 000000004000003f RCX: ffffc90006e9e000
RDX: 000000000002c400 RSI: ffffffff85652d39 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000004
R10: ffff888032066928 R11: ffff888032066000 R12: ffff88809e614810
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
inet_diag_dump_icsk+0x619/0x14e0 net/ipv4/inet_diag.c:957
__inet_diag_dump+0x89/0x110 net/ipv4/inet_diag.c:1049
netlink_dump+0x3da/0xab0 net/netlink/af_netlink.c:2203
__netlink_dump_start+0x4e2/0x740 net/netlink/af_netlink.c:2300
netlink_dump_start include/linux/netlink.h:217 [inline]
inet_diag_handler_cmd+0x1ea/0x290 net/ipv4/inet_diag.c:1170
__sock_diag_cmd net/core/sock_diag.c:231 [inline]
sock_diag_rcv_msg+0x28d/0x390 net/core/sock_diag.c:263
netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
sock_diag_rcv+0x26/0x40 net/core/sock_diag.c:274
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xc5/0x100 net/socket.c:656
sock_write_iter+0x22c/0x370 net/socket.c:925
call_write_iter include/linux/fs.h:1778 [inline]
do_iter_readv_writev+0x3df/0x600 fs/read_write.c:675
do_iter_write fs/read_write.c:954 [inline]
do_iter_write+0x152/0x550 fs/read_write.c:935
vfs_writev+0x170/0x2a0 fs/read_write.c:999
do_writev+0xfc/0x2c0 fs/read_write.c:1034
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f1773f92c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000050cfc0 RCX: 000000000045c829
RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000d14 R14: 00000000004cb1f4 R15: 00007f1773f936d4
Code: 02 74 06 48 83 c4 08 5b c3 0f 0b 48 83 c4 08 5b c3 48 89 04 24 e8 c1 2f 38 00 48 8b 04 24 eb cd 90 66 2e 0f 1f 84 00 00 00 00 00 <53> 48 83 ec 08 65 ff 05 14 84 b6 7e e8 1f e7 b2 01 48 c7 c3 40
rcu_sched kthread starved for 10502 jiffies! g17891 c17890 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task 29920 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
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.1:14709]
Modules linked in:
irq event stamp: 46513885
hardirqs last enabled at (46513884): [] restore_regs_and_return_to_kernel+0x0/0x2e
hardirqs last disabled at (46513885): [] apic_timer_interrupt+0x8a/0xa0 arch/x86/entry/entry_64.S:792
softirqs last enabled at (21190): [] __do_softirq+0x664/0x9bf kernel/softirq.c:314
softirqs last disabled at (25123): [] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (25123): [] irq_exit+0x15b/0x1a0 kernel/softirq.c:409
CPU: 1 PID: 14709 Comm: syz-executor.1 Not tainted 4.14.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888032066000 task.stack: ffff8882084a8000
RIP: 0010:memcmp+0x42/0xb0 lib/string.c:861
RSP: 0018:ffff8880aeb07728 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8880aeb077fa RCX: 0000000000000001
RDX: 0000000000000002 RSI: ffff88809d7ee5d2 RDI: ffff8880aeb077c0
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000005
R10: ffff888032066950 R11: ffff888032066000 R12: ffff8880aeb07828
R13: 000000000000000d R14: ffff8880aeb077c0 R15: ffff88809d7ee580
FS: 00007f1773f93700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020045000 CR3: 0000000088471000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
find_stack lib/stackdepot.c:180 [inline]
depot_save_stack+0x10d/0x401 lib/stackdepot.c:229
save_stack+0x89/0xa0 mm/kasan/kasan.c:453
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+0x127/0x770 mm/slab.c:3552
dst_alloc+0xe4/0x170 net/core/dst.c:107
__ip6_dst_alloc+0x2e/0x50 net/ipv6/route.c:357
ip6_dst_alloc+0x2a/0x1d0 net/ipv6/route.c:370
icmp6_dst_alloc+0x155/0x580 net/ipv6/route.c:1766
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:3765
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+0xab/0x140 kernel/sched/core.c:3611
RSP: 0018:ffff8882084af330 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2cd3 RBX: dffffc0000000000 RCX: 1ffff1100640cd24
RDX: 0000000000000000 RSI: ffff888032066900 RDI: 0000000000000001
RBP: ffffed100640cc00 R08: 0000011ce5a3fdfc R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888032066000
R13: ffffffff87d16698 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4a/0x50 kernel/kcov.c:90
RSP: 0018:ffff8882084af408 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: 000000004000003f RCX: ffffc90006e9e000
RDX: 000000000002c400 RSI: ffffffff85652d39 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000004
R10: ffff888032066928 R11: ffff888032066000 R12: ffff88809e614810
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
inet_diag_dump_icsk+0x619/0x14e0 net/ipv4/inet_diag.c:957
__inet_diag_dump+0x89/0x110 net/ipv4/inet_diag.c:1049
netlink_dump+0x3da/0xab0 net/netlink/af_netlink.c:2203
__netlink_dump_start+0x4e2/0x740 net/netlink/af_netlink.c:2300
netlink_dump_start include/linux/netlink.h:217 [inline]
inet_diag_handler_cmd+0x1ea/0x290 net/ipv4/inet_diag.c:1170
__sock_diag_cmd net/core/sock_diag.c:231 [inline]
sock_diag_rcv_msg+0x28d/0x390 net/core/sock_diag.c:263
netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
sock_diag_rcv+0x26/0x40 net/core/sock_diag.c:274
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xc5/0x100 net/socket.c:656
sock_write_iter+0x22c/0x370 net/socket.c:925
call_write_iter include/linux/fs.h:1778 [inline]
do_iter_readv_writev+0x3df/0x600 fs/read_write.c:675
do_iter_write fs/read_write.c:954 [inline]
do_iter_write+0x152/0x550 fs/read_write.c:935
vfs_writev+0x170/0x2a0 fs/read_write.c:999
do_writev+0xfc/0x2c0 fs/read_write.c:1034
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f1773f92c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000050cfc0 RCX: 000000000045c829
RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000d14 R14: 00000000004cb1f4 R15: 00007f1773f936d4
Code: 48 89 fb 48 83 ec 10 eb 0d 48 83 c3 01 48 83 c6 01 49 39 dc 74 45 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 0f b6 04 28 38 d0 7f 04 <84> c0 75 54 48 89 f2 48 89 f1 0f b6 03 48 c1 ea 03 83 e1 07 0f
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14730 Comm: syz-executor.3 Not tainted 4.14.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888033dd81c0 task.stack: ffff8881ef5f8000
RIP: 0010:__lock_acquire+0x107/0x4620 kernel/locking/lockdep.c:3369
RSP: 0000:ffff8881ef5ff9f0 EFLAGS: 00000046
RAX: 0000000000000086 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff888056a61a90
RBP: ffff8881ef5ffb98 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888033dd81c0 R12: ffff888056a61a90
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
FS: 00007faac2d9b700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002dbbce18 CR3: 000000002b153000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__might_fault mm/memory.c:4584 [inline]
__might_fault+0x137/0x1b0 mm/memory.c:4569
__clear_user+0x1e/0x70 arch/x86/lib/usercopy_64.c:19
copy_xregs_to_user arch/x86/include/asm/fpu/internal.h:375 [inline]
copy_fpregs_to_sigframe arch/x86/kernel/fpu/signal.c:126 [inline]
copy_fpstate_to_sigframe+0x212/0x460 arch/x86/kernel/fpu/signal.c:177
get_sigframe.isra.0.constprop.0+0x46e/0x660 arch/x86/kernel/signal.c:283
__setup_rt_frame arch/x86/kernel/signal.c:465 [inline]
setup_rt_frame arch/x86/kernel/signal.c:704 [inline]
handle_signal arch/x86/kernel/signal.c:748 [inline]
do_signal+0xa6a/0x1690 arch/x86/kernel/signal.c:816
exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode+0x1af/0x210 arch/x86/entry/common.c:199
retint_user+0x8/0x18
RIP: 0033:0x405be9
RSP: 002b:00007faac2d9aa70 EFLAGS: 00010202
RAX: 000000002dbbce08 RBX: 0000000000508600 RCX: 0000000000416687
RDX: 62826635aaca10f7 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 000000000078c0e0 R08: 00007faac2d9aa70 R09: 000000000078c0e0
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
R13: 0000000000000bed R14: 00000000004ce103 R15: 00007faac2d9b6d4
Code: 14 02 48 c7 c0 c0 ba 58 8a 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a9 0e 00 00 44 8b 15 b2 e0 12 09 45 85 d2 0f 84 63 07 00 00 <8b> 3d 83 0a 91 06 85 ff 0f 85 94 00 00 00 45 31 c0 83 fe 01 0f