rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=b4d/1/0x4000000000000000 softirq=11259/11259 fqs=1
(t=10504 jiffies g=12229 q=1 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g12229 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=6664
rcu: rcu_preempt kthread starved for 10504 jiffies! g12229 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:29264 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5106 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6421
schedule+0xd2/0x1f0 kernel/sched/core.c:6493
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1907
rcu_gp_fqs_loop+0x1c0/0x840 kernel/rcu/tree.c:2078
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2267
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
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: 5213 Comm: syz-executor.4 Not tainted 5.18.0-rc3-next-20220422-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1058
Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 63 0f b6 07 40 38 c6 74 35 48 83 c4 10 c3 c3 e8 23 91 4b 00 eb 07 0f 00 2d da b1 94 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 56 8f 4b 00 8b 74 24 0c
RSP: 0000:ffffc90000de0488 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 1ffffffff1b73199
RDX: 0000000000000000 RSI: ffffffff81807171 RDI: ffffffff8134dffd
RBP: ffff88801acce1c8 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81807158 R11: 0000000000000001 R12: 0000000000000000
R13: ffffed1003599c39 R14: 0000000000000001 R15: ffff8880b9d3ae40
FS: 00007f1657ffe700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0140c9000 CR3: 0000000022bec000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x8c7/0xb50 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:354 [inline]
task_lock include/linux/sched/task.h:170 [inline]
__get_task_comm+0x23/0x50 fs/exec.c:1219
__set_page_owner_handle mm/page_owner.c:174 [inline]
__set_page_owner+0x253/0x380 mm/page_owner.c:192
prep_new_page mm/page_alloc.c:2394 [inline]
get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4135
__alloc_pages+0x1b2/0x500 mm/page_alloc.c:5356
alloc_pages+0x1aa/0x310 mm/mempolicy.c:2273
alloc_slab_page mm/slub.c:1797 [inline]
allocate_slab+0x26c/0x3c0 mm/slub.c:1942
new_slab mm/slub.c:2002 [inline]
___slab_alloc+0x985/0xd90 mm/slub.c:3002
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3089
slab_alloc_node mm/slub.c:3180 [inline]
kmem_cache_alloc_node+0x122/0x3f0 mm/slub.c:3264
__alloc_skb+0x215/0x340 net/core/skbuff.c:414
skb_copy+0x139/0x3c0 net/core/skbuff.c:1585
mac80211_hwsim_tx_frame_no_nl.isra.0+0xb7c/0x13b0 drivers/net/wireless/mac80211_hwsim.c:1642
mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1884
mac80211_hwsim_beacon_tx+0x49e/0x920 drivers/net/wireless/mac80211_hwsim.c:1938
__iterate_interfaces+0x1e5/0x560 net/mac80211/util.c:793
ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1961
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_kcov_mode kernel/kcov.c:168 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x60 kernel/kcov.c:200
Code: 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 70 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 ac 15 00 00 85 c0 74 2b <8b> 82 88 15 00 00 83 f8 02 75 20 48 8b 8a 90 15 00 00 8b 92 8c 15
RSP: 0000:ffffc90009e67198 EFLAGS: 00000246
RAX: 0000000080000001 RBX: 0000000000000010 RCX: 0000000000000000
RDX: ffff88801accd880 RSI: ffffffff83faa4d7 RDI: 0000000000000003
RBP: ffff888012267668 R08: 0000000000000000 R09: ffff88801acce0b8
R10: ffffffff83faa4cd R11: 0000000000000001 R12: 000000000000000e
R13: 0000000000000010 R14: ffff888012267648 R15: 0000000000000007
strscpy_pad+0x37/0x70 lib/string_helpers.c:789
__get_task_comm+0x35/0x50 fs/exec.c:1221
__set_page_owner_handle mm/page_owner.c:174 [inline]
__set_page_owner+0x253/0x380 mm/page_owner.c:192
prep_new_page mm/page_alloc.c:2394 [inline]
get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4135
__alloc_pages+0x1b2/0x500 mm/page_alloc.c:5356
alloc_pages+0x1aa/0x310 mm/mempolicy.c:2273
push_pipe+0x2a4/0x6c0 lib/iov_iter.c:576
pipe_zero lib/iov_iter.c:924 [inline]
iov_iter_zero+0xabd/0x1790 lib/iov_iter.c:946
iomap_dio_hole_iter fs/iomap/direct-io.c:380 [inline]
iomap_dio_iter fs/iomap/direct-io.c:428 [inline]
__iomap_dio_rw+0x983/0x1ae0 fs/iomap/direct-io.c:590
iomap_dio_rw+0x38/0x90 fs/iomap/direct-io.c:680
ext4_dio_read_iter fs/ext4/file.c:79 [inline]
ext4_file_read_iter+0x434/0x600 fs/ext4/file.c:130
call_read_iter include/linux/fs.h:2053 [inline]
generic_file_splice_read+0x3b4/0x5d0 fs/splice.c:311
do_splice_to+0x1b9/0x240 fs/splice.c:796
splice_direct_to_actor+0x2c2/0x8c0 fs/splice.c:870
do_splice_direct+0x1a7/0x270 fs/splice.c:979
do_sendfile+0xae0/0x1240 fs/read_write.c:1246
__do_sys_sendfile64 fs/read_write.c:1311 [inline]
__se_sys_sendfile64 fs/read_write.c:1297 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1297
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f16590890e9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1657ffe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f165919c100 RCX: 00007f16590890e9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007f16590e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcfb0bc0df R14: 00007f1657ffe300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 5212 Comm: syz-executor.4 Not tainted 5.18.0-rc3-next-20220422-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+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x262/0x3f0 kernel/rcu/tree_stall.h:369
print_cpu_stall kernel/rcu/tree_stall.h:665 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:749 [inline]
rcu_pending kernel/rcu/tree.c:4068 [inline]
rcu_sched_clock_irq.cold+0x144/0x8fc kernel/rcu/tree.c:2755
update_process_times+0x16d/0x200 kernel/time/timer.c:1811
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1058
Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 63 0f b6 07 40 38 c6 74 35 48 83 c4 10 c3 c3 e8 23 91 4b 00 eb 07 0f 00 2d da b1 94 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 56 8f 4b 00 8b 74 24 0c
RSP: 0018:ffffc90000007a20 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 1ffffffff1b73199
RDX: 0000000000000000 RSI: ffffffff81807171 RDI: ffffffff8134dffd
RBP: ffffffff8cbfc980 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81807158 R11: 0000000000000080 R12: 0000000000000000
R13: fffffbfff197f930 R14: 0000000000000001 R15: ffff8880b9c3ae40
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x8c7/0xb50 kernel/locking/qspinlock.c:511
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:354 [inline]
mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f4/0x13b0 drivers/net/wireless/mac80211_hwsim.c:1593
mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1884
mac80211_hwsim_beacon_tx+0x49e/0x920 drivers/net/wireless/mac80211_hwsim.c:1938
__iterate_interfaces+0x1e5/0x560 net/mac80211/util.c:793
ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1961
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 0a 06 ed f7 48 89 ef e8 12 87 ed f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 e3 93 e0 f7 65 8b 05 2c 52 91 76 85 c0 74 0a 5b 5d c3 e8 80 53
RSP: 0018:ffffc90009e57740 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff1b73199
RDX: 0000000000000000 RSI: ffffffff81807171 RDI: 0000000000000001
RBP: ffff888079b3aec0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81807158 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000010 R14: 0000000000000001 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
__wake_up_common_lock+0xde/0x130 kernel/sched/wait.c:139
__unix_dgram_recvmsg+0x2cd/0xb80 net/unix/af_unix.c:2419
unix_dgram_recvmsg+0xc0/0xe0 net/unix/af_unix.c:2489
sock_recvmsg_nosec net/socket.c:948 [inline]
____sys_recvmsg+0x521/0x5f0 net/socket.c:2662
___sys_recvmsg+0x127/0x200 net/socket.c:2706
do_recvmmsg+0x24d/0x6d0 net/socket.c:2800
__sys_recvmmsg net/socket.c:2879 [inline]
__do_sys_recvmmsg net/socket.c:2902 [inline]
__se_sys_recvmmsg net/socket.c:2895 [inline]
__x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2895
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f16590890e9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f165a10c168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f165919c030 RCX: 00007f16590890e9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f16590e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcfb0bc0df R14: 00007f165a10c300 R15: 0000000000022000
sched: RT throttling activated
----------------
Code disassembly (best guess):
0: fa cli
1: 83 e2 07 and $0x7,%edx
4: 38 d0 cmp %dl,%al
6: 7f 04 jg 0xc
8: 84 c0 test %al,%al
a: 75 63 jne 0x6f
c: 0f b6 07 movzbl (%rdi),%eax
f: 40 38 c6 cmp %al,%sil
12: 74 35 je 0x49
14: 48 83 c4 10 add $0x10,%rsp
18: c3 retq
19: c3 retq
1a: e8 23 91 4b 00 callq 0x4b9142
1f: eb 07 jmp 0x28
21: 0f 00 2d da b1 94 08 verw 0x894b1da(%rip) # 0x894b202
28: fb sti
29: f4 hlt
* 2a: 48 83 c4 10 add $0x10,%rsp <-- trapping instruction
2e: c3 retq
2f: 89 74 24 0c mov %esi,0xc(%rsp)
33: 48 89 3c 24 mov %rdi,(%rsp)
37: e8 56 8f 4b 00 callq 0x4b8f92
3c: 8b 74 24 0c mov 0xc(%rsp),%esi