rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=443341, q=739)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295220581-4295210079), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g443341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:28216 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 17536 Comm: syz-executor.4 Not tainted 5.15.0-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:481
print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x2125/0x2200 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
__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:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:197
Code: ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 65 8b 05 69 fd 8a 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9 00 01 ff 00 74 0e
RSP: 0018:ffffc900038afa40 EFLAGS: 00000296
RAX: 0000000000000000 RBX: ffff88807a83dc80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff842f427f RDI: ffff88807a83dc80
RBP: ffff88807d348000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8431b3ad R11: 0000000000000000 R12: 000000000000001b
R13: 0000000000000000 R14: ffffed1008be13a0 R15: ffff888045f09d00
tty_ldisc_receive_buf+0x1f/0x190 drivers/tty/tty_buffer.c:470
paste_selection+0x1de/0x4c0 drivers/tty/vt/selection.c:408
tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204
vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762
tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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: 0033:0x7fa87aab7ae9
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:00007fa87802d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa87abcaf60 RCX: 00007fa87aab7ae9
RDX: 0000000020001080 RSI: 000000000000541c RDI: 0000000000000003
RBP: 00007fa87ab11f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff97e6407f R14: 00007fa87802d300 R15: 0000000000022000
----------------
Code disassembly (best guess), 2 bytes skipped:
0: ba 08 00 00 00 mov $0x8,%edx
5: 4d 8b 03 mov (%r11),%r8
8: 48 0f bd ca bsr %rdx,%rcx
c: 49 8b 45 00 mov 0x0(%r13),%rax
10: 48 63 c9 movslq %ecx,%rcx
13: e9 64 ff ff ff jmpq 0xffffff7c
18: 0f 1f 00 nopl (%rax)
1b: 65 8b 05 69 fd 8a 7e mov %gs:0x7e8afd69(%rip),%eax # 0x7e8afd8b
22: 89 c1 mov %eax,%ecx
24: 48 8b 34 24 mov (%rsp),%rsi
* 28: 81 e1 00 01 00 00 and $0x100,%ecx <-- trapping instruction
2e: 65 48 8b 14 25 40 70 mov %gs:0x27040,%rdx
35: 02 00
37: a9 00 01 ff 00 test $0xff0100,%eax
3c: 74 0e je 0x4c