rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P12744/1:b..l P11356/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=48193, q=1132923 ncpus=2)
task:syz-executor state:R running task stack:21736 pid:11356 tgid:11356 ppid:1 task_flags:0x40054c flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288
irqentry_exit+0x6f/0x90 kernel/entry/common.c:197
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:220 [inline]
RIP: 0010:unwind_next_frame+0x26a/0x2390 arch/x86/kernel/unwind_orc.c:494
Code: 1c 00 00 44 8b 45 00 41 ff c0 4a 8d 04 6d 00 00 00 00 4c 01 e8 48 8d 34 45 4c 36 4b 90 48 81 fe 62 fd 00 91 0f 83 24 18 00 00 <4b> 8d 04 40 48 8d 04 45 4c 36 4b 90 48 3d 62 fd 00 91 0f 87 0c 18
RSP: 0018:ffffc90003d9f578 EFLAGS: 00000283
RAX: 000000000003bbd1 RBX: dffffc0000000000 RCX: 633d3c76caf2ea00
RDX: 00000000000a826f RSI: ffffffff9052adee RDI: ffffffff8c035820
RBP: ffffffff910293f8 R08: 0000000000013ea2 R09: 0000000000000000
R10: ffffc90003d9f698 R11: ffffffff81ad2180 R12: ffffffff8165a4f9
R13: 0000000000013e9b R14: ffffc90003d9f648 R15: 00000000000065a4
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559
slab_free_hook mm/slub.c:2378 [inline]
slab_free mm/slub.c:4680 [inline]
kmem_cache_free+0x2f6/0x400 mm/slub.c:4782
task_work_run+0x1d4/0x260 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x6b5/0x2300 kernel/exit.c:961
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1286/0x1340 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x130 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feacc784e57
RSP: 002b:00007fffd48fe0c0 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 000000000000006c RCX: 00007feacc784e57
RDX: 0000000040000000 RSI: 00007fffd48fe12c RDI: 00000000ffffffff
RBP: 00007fffd48fe12c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000020
R13: 0000555560672590 R14: 00000000000753b5 R15: 00007fffd48fe180
task:syz-executor state:R running task stack:24232 pid:12744 tgid:12744 ppid:5846 task_flags:0x400100 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288
irqentry_exit+0x6f/0x90 kernel/entry/common.c:197
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x70/0x360 kernel/locking/lockdep.c:5833
Code: f8 08 0f 83 b8 01 00 00 89 c0 48 0f a3 05 b8 bf 25 0e 73 16 e8 61 02 09 00 84 c0 75 0d f6 05 12 a2 0f 0e 01 0f 84 d7 01 00 00 <83> 3d d9 f0 25 0e 00 0f 84 f0 00 00 00 48 8b b4 24 90 00 00 00 4c
RSP: 0018:ffffc9000b586c58 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 384e5232fe56b000
RDX: 0000000000000000 RSI: ffffffff8c035860 RDI: ffffffff8c035820
RBP: ffffffff8173a1d5 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000b586e18 R11: ffffffff81ad2180 R12: 0000000000000002
R13: ffffffff8e33bfe0 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf5/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895
discard_slab mm/slub.c:2753 [inline]
__put_partials+0x146/0x170 mm/slub.c:3218
put_cpu_partial+0x17c/0x250 mm/slub.c:3293
__slab_free+0x2b9/0x390 mm/slub.c:4550
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:349
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4180 [inline]
slab_alloc_node mm/slub.c:4229 [inline]
kmem_cache_alloc_noprof+0x1ad/0x390 mm/slub.c:4236
ptlock_alloc+0x20/0x70 mm/memory.c:7289
ptlock_init include/linux/mm.h:3009 [inline]
pagetable_pte_ctor include/linux/mm.h:3058 [inline]
__pte_alloc_one_noprof include/asm-generic/pgalloc.h:78 [inline]
pte_alloc_one+0x7d/0x170 arch/x86/mm/pgtable.c:18
__pte_alloc+0x25/0x1a0 mm/memory.c:452
copy_pte_range mm/memory.c:1235 [inline]
copy_pmd_range+0x7805/0x7f00 mm/memory.c:1389
copy_pud_range mm/memory.c:1426 [inline]
copy_p4d_range mm/memory.c:1450 [inline]
copy_page_range+0xc14/0x1270 mm/memory.c:1538
dup_mmap+0xf57/0x1ac0 mm/mmap.c:1834
dup_mm kernel/fork.c:1488 [inline]
copy_mm+0x13c/0x4b0 kernel/fork.c:1540
copy_process+0x1706/0x3c00 kernel/fork.c:2178
kernel_clone+0x21e/0x840 kernel/fork.c:2608
__do_sys_clone kernel/fork.c:2751 [inline]
__se_sys_clone kernel/fork.c:2735 [inline]
__x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2735
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1baef85453
RSP: 002b:00007ffd52a17798 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1baef85453
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00005555844f67d0 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000