rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=a0f/1/0x4000000000000000 softirq=123715/123716 fqs=10
(detected by 1, t=10502 jiffies, g=233273, q=774)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8938 Comm: kworker/u4:14 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_tt_purge
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5366 [inline]
RIP: 0010:lock_is_held_type+0x96/0x140 kernel/locking/lockdep.c:5668
Code: 8d ac 24 20 0a 00 00 65 ff 05 76 a9 cb 76 85 c0 7f 12 e9 88 00 00 00 83 c3 01 41 3b 9c 24 18 0a 00 00 7d 7b 48 63 c3 48 89 ee <48> 8d 04 80 4d 8d 7c c5 00 4c 89 ff e8 99 fe ff ff 85 c0 74 d8 41
RSP: 0018:ffffc90000007d90 EFLAGS: 00000097
RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff888079ad6b00 RDI: ffff88807d804348
RBP: ffff888079ad6b00 R08: 0000000000000000 R09: 0000000000000003
R10: ffffffff8753f48b R11: 0000000000000000 R12: ffff88807d803900
R13: ffff88807d804320 R14: 00000000ffffffff R15: ffff88807d804348
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f806c36f718 CR3: 000000000b68e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
advance_sched+0xad/0x9a0 net/sched/sch_taprio.c:713
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 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:bytes_is_nonzero mm/kasan/generic.c:84 [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+0xc8/0x180 mm/kasan/generic.c:189
Code: 38 00 74 ed 48 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 7a 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 <48> 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 80 38 00
RSP: 0018:ffffc9000486fc58 EFLAGS: 00000283
RAX: ffffed10051d6250 RBX: ffffed10051d6251 RCX: ffffffff815ca570
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888028eb1280
RBP: ffffed10051d6250 R08: 0000000000000000 R09: ffff888028eb1283
R10: ffffed10051d6250 R11: 0000000000000000 R12: ffffc9000486fdb0
R13: dffffc0000000000 R14: ffff88823bd3e000 R15: 000000000000004a
instrument_atomic_read include/linux/instrumented.h:71 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
queued_spin_is_locked include/asm-generic/qspinlock.h:28 [inline]
debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline]
do_raw_spin_unlock+0x50/0x230 kernel/locking/spinlock_debug.c:140
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:175 [inline]
_raw_spin_unlock_bh+0x1a/0x30 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:408 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2300 [inline]
batadv_tt_purge+0x3a3/0xaf0 net/batman-adv/translation-table.c:3562
process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: rcu_preempt kthread starved for 10481 jiffies! g233273 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:28696 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xb44/0x5960 kernel/sched/core.c:6287
schedule+0xd3/0x270 kernel/sched/core.c:6366
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x800 kernel/rcu/tree.c:1957
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2130
kthread+0x3e5/0x4d0 kernel/kthread.c:319
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 1
CPU: 1 PID: 8933 Comm: kworker/u4:12 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
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:3880 [inline]
rcu_sched_clock_irq+0x2125/0x2200 kernel/rcu/tree.c:2599
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+0x2c/0x40 kernel/kcov.c:174
Code: 05 19 1b 8b 7e 89 c2 81 e2 00 01 00 00 a9 00 01 ff 00 74 10 31 c0 85 d2 74 15 8b 96 64 15 00 00 85 d2 74 0b 8b 86 40 15 00 00 <39> f8 0f 94 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 31 c0
RSP: 0018:ffffc9000483f9e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880b9c39ce0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff888077980000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816b9526 R11: 0000000000000000 R12: ffffed101738739d
R13: 0000000000000000 R14: ffff8880b9c39ce8 R15: 0000000000000001
write_comp_data kernel/kcov.c:218 [inline]
__sanitizer_cov_trace_const_cmp4+0x1c/0x70 kernel/kcov.c:284
csd_lock_wait kernel/smp.c:440 [inline]
smp_call_function_many_cond+0x476/0xc20 kernel/smp.c:969
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:929 [inline]
text_poke_bp_batch+0x355/0x560 arch/x86/kernel/alternative.c:1167
text_poke_flush arch/x86/kernel/alternative.c:1268 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1265 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1275
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d5/0x430 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:626 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:618
process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 8d ac 24 20 0a 00 00 lea 0xa20(%rsp),%ebp
7: 65 ff 05 76 a9 cb 76 incl %gs:0x76cba976(%rip) # 0x76cba984
e: 85 c0 test %eax,%eax
10: 7f 12 jg 0x24
12: e9 88 00 00 00 jmpq 0x9f
17: 83 c3 01 add $0x1,%ebx
1a: 41 3b 9c 24 18 0a 00 cmp 0xa18(%r12),%ebx
21: 00
22: 7d 7b jge 0x9f
24: 48 63 c3 movslq %ebx,%rax
27: 48 89 ee mov %rbp,%rsi
* 2a: 48 8d 04 80 lea (%rax,%rax,4),%rax <-- trapping instruction
2e: 4d 8d 7c c5 00 lea 0x0(%r13,%rax,8),%r15
33: 4c 89 ff mov %r15,%rdi
36: e8 99 fe ff ff callq 0xfffffed4
3b: 85 c0 test %eax,%eax
3d: 74 d8 je 0x17
3f: 41 rex.B