rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=1d7/1/0x4000000000000000 softirq=159921/159923 fqs=35
(t=10502 jiffies g=247021 q=2034)
rcu: rcu_preempt kthread starved for 10430 jiffies! g247021 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R running task stack:26576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11174 Comm: syz-executor.2 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x84/0x2f0 mm/kasan/generic.c:189
Code: df 4d 01 ea 4d 89 d6 4d 29 ce 49 83 fe 10 7f 30 4d 85 f6 0f 84 ae 01 00 00 4c 89 cb 4c 29 d3 0f 1f 80 00 00 00 00 45 0f b6 19 <45> 84 db 0f 85 f3 01 00 00 49 ff c1 48 ff c3 75 eb e9 87 01 00 00
RSP: 0018:ffffc90000dc0948 EFLAGS: 00000097
RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffffff81385b03
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8dfeaba8
RBP: ffffffff8c5c0838 R08: dffffc0000000000 R09: fffffbfff1bfd575
R10: fffffbfff1bfd576 R11: 0000000000000000 R12: 1ffffffff1bfd575
R13: dffffc0000000001 R14: 0000000000000001 R15: dffffc0000000000
FS: 00007f8ada530700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e722000 CR3: 0000000195c2e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
cpumask_test_cpu include/linux/cpumask.h:344 [inline]
cpu_online include/linux/cpumask.h:895 [inline]
trace_local_timer_exit+0x33/0x180 arch/x86/include/asm/trace/irq_vectors.h:41
__sysvec_apic_timer_interrupt+0xfe/0x270 arch/x86/kernel/apic/apic.c:1104
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 52 47 ba f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c7 00 44 f7 65 8b 05 38 4a ec 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90000dc0a80 EFLAGS: 00000206
RAX: f773162a77ae8f00 RBX: 1ffff920001b8154 RCX: ffffffff816672d1
RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffffc90000dc0b08 R08: dffffc0000000000 R09: fffffbfff1ff41f9
R10: fffffbfff1ff41f9 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff920001b8150 R14: ffffc90000dc0aa0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:404 [inline]
skb_dequeue+0x10e/0x140 net/core/skbuff.c:3216
mrp_queue_xmit net/802/mrp.c:363 [inline]
mrp_join_timer+0x405/0x820 net/802/mrp.c:608
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5641
Code: 08 4c 89 f7 e8 52 7f 6a 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11
RSP: 0018:ffffc9001fe9f340 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92003fd3e78 RCX: ffff8880b2afc458
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9001fe9f498 R08: dffffc0000000000 R09: fffffbfff1ff41de
R10: fffffbfff1ff41de R11: 0000000000000000 R12: 0000000000000246
R13: 1ffff92003fd3e70 R14: ffffc9001fe9f3c0 R15: dffffc0000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
lockref_get+0x11/0x50 lib/lockref.c:52
dget include/linux/dcache.h:327 [inline]
__traverse_mounts fs/namei.c:1344 [inline]
traverse_mounts+0x49e/0x690 fs/namei.c:1385
handle_mounts fs/namei.c:1494 [inline]
step_into+0x1e0/0x1f90 fs/namei.c:1800
walk_component+0x33a/0x790 fs/namei.c:1976
link_path_walk+0x697/0xd00
path_openat+0x25b/0x3660 fs/namei.c:3555
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_openat fs/open.c:1244 [inline]
__se_sys_openat fs/open.c:1239 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1239
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8adbbbae99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ada530168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8adbccdf60 RCX: 00007f8adbbbae99
RDX: 0000000000080000 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007f8adbc14ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0794079f R14: 00007f8ada530300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 11155 Comm: syz-executor.1 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x1e33/0x2bc0 kernel/rcu/tree.c:2597
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 52 47 ba f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c7 00 44 f7 65 8b 05 38 4a ec 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900000079e0 EFLAGS: 00000206
RAX: abd702ff7d333500 RBX: 1ffff92000000f40 RCX: ffffffff816672d1
RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffffc90000007a70 R08: dffffc0000000000 R09: fffffbfff1ff41f9
R10: fffffbfff1ff41f9 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000000f3c R14: ffffc90000007a00 R15: 0000000000000246
__mod_timer+0x98d/0xd20 kernel/time/timer.c:1065
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:finish_lock_switch+0x1c5/0x350 kernel/sched/core.c:4733
Code: be ff ff ff ff e8 1b 1b b7 08 85 c0 74 37 4d 85 e4 75 58 0f 1f 44 00 00 4c 89 ff e8 35 c4 b9 08 e8 f0 c7 2e 00 fb 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 4d 85 e4 0f 85 4a ff ff ff
RSP: 0018:ffffc9002004f728 EFLAGS: 00000286
RAX: abd702ff7d333500 RBX: 1ffff11017347410 RCX: ffffffff816672d1
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880b9a3a080 R08: dffffc0000000000 R09: fffffbfff1ff41df
R10: fffffbfff1ff41df R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b9a3a318 R14: dffffc0000000000 R15: ffff8880b9a395c0
finish_task_switch+0x140/0x630 kernel/sched/core.c:4850
context_switch kernel/sched/core.c:4975 [inline]
__schedule+0xb7a/0x1460 kernel/sched/core.c:6253
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6668
irqentry_exit+0x56/0x90 kernel/entry/common.c:425
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5641
Code: 08 4c 89 f7 e8 52 7f 6a 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11
RSP: 0018:ffffc9002004fa60 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92004009f5c RCX: ffff888194f4c458
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9002004fba8 R08: dffffc0000000000 R09: fffffbfff1ff41df
R10: fffffbfff1ff41df R11: 0000000000000000 R12: 0000000000000246
R13: 1ffff92004009f54 R14: ffffc9002004fae0 R15: dffffc0000000000
__fs_reclaim_acquire mm/page_alloc.c:4535 [inline]
fs_reclaim_acquire+0x77/0x110 mm/page_alloc.c:4549
might_alloc include/linux/sched/mm.h:227 [inline]
slab_pre_alloc_hook mm/slab.h:492 [inline]
slab_alloc_node mm/slub.c:3148 [inline]
slab_alloc mm/slub.c:3242 [inline]
kmem_cache_alloc_trace+0x42/0x330 mm/slub.c:3259
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:724 [inline]
smack_sk_alloc_security+0xe6/0x290 security/smack/smack_lsm.c:2243
security_sk_alloc+0x55/0xb0 security/security.c:2263
sk_prot_alloc+0x10e/0x230 net/core/sock.c:1923
sk_alloc+0x35/0x300 net/core/sock.c:1973
__netlink_create+0x68/0x230 net/netlink/af_netlink.c:643
netlink_create+0x368/0x4f0 net/netlink/af_netlink.c:706
__sock_create+0x580/0x8d0 net/socket.c:1464
sock_create net/socket.c:1515 [inline]
__sys_socket+0x133/0x380 net/socket.c:1557
__do_sys_socket net/socket.c:1566 [inline]
__se_sys_socket net/socket.c:1564 [inline]
__x64_sys_socket+0x76/0x80 net/socket.c:1564
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff0c2e9be99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff0c17cf168 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007ff0c2faf100 RCX: 00007ff0c2e9be99
RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 00007ff0c2ef5ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc963826bf R14: 00007ff0c17cf300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 4d 01 ea add %r13,%r10
3: 4d 89 d6 mov %r10,%r14
6: 4d 29 ce sub %r9,%r14
9: 49 83 fe 10 cmp $0x10,%r14
d: 7f 30 jg 0x3f
f: 4d 85 f6 test %r14,%r14
12: 0f 84 ae 01 00 00 je 0x1c6
18: 4c 89 cb mov %r9,%rbx
1b: 4c 29 d3 sub %r10,%rbx
1e: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
25: 45 0f b6 19 movzbl (%r9),%r11d
* 29: 45 84 db test %r11b,%r11b <-- trapping instruction
2c: 0f 85 f3 01 00 00 jne 0x225
32: 49 ff c1 inc %r9
35: 48 ff c3 inc %rbx
38: 75 eb jne 0x25
3a: e9 87 01 00 00 jmpq 0x1c6