------------[ cut here ]------------ WARNING: CPU: 2 PID: 1 at kernel/rcu/tree_stall.h:770 rcu_check_gp_start_stall.part.0+0x1b2/0x2b0 kernel/rcu/tree_stall.h:762 Modules linked in: CPU: 2 PID: 1 Comm: systemd Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:rcu_check_gp_start_stall.part.0+0x1b2/0x2b0 kernel/rcu/tree_stall.h:770 Code: 78 0a 48 01 c3 48 39 da 78 5d be 04 00 00 00 48 c7 c7 a0 43 c0 8f e8 fd fe 55 00 b8 01 00 00 00 87 05 72 d0 60 0e 85 c0 75 34 <0f> 0b 48 81 fd 40 c0 d7 8b 74 0c 48 c7 c7 40 c0 d7 8b e8 27 87 9e RSP: 0018:ffffc90000560e70 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 000000010000f39c RCX: ffffffff815f7323 RDX: fffffbfff1f80874 RSI: 0000000000000004 RDI: ffffffff8fc043a0 RBP: ffffffff8bd7c040 R08: 0000000000000001 R09: 0000000000000003 R10: fffffbfff1f80874 R11: ffffffff8bd7c088 R12: 1ffffffff1741e30 R13: 0000000000000246 R14: ffff88802cc35b52 R15: ffff88802cc35bd8 FS: 00007fbead638500(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f65b8d1c20 CR3: 000000001e688000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_check_gp_start_stall kernel/rcu/tree_stall.h:733 [inline] rcu_core+0x3b1/0xf00 kernel/rcu/tree.c:2718 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:lock_acquire+0xc/0x720 kernel/locking/lockdep.c:5410 Code: ff 48 c7 c7 d8 e5 a3 8d e8 a1 99 5c 00 e9 fb fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 b8 00 00 00 00 00 fc ff df 41 57 <41> 89 d7 41 56 41 89 f6 41 55 49 89 fd 41 54 41 89 cc 55 44 89 c5 RSP: 0018:ffffc9000034f710 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 00007fbeabb97a4b RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8bd73da0 RBP: 00007fbeabb97a4b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000082083 R11: 0000000000000001 R12: ffffc9000034f840 R13: 0000000000000000 R14: ffff8880115d4040 R15: 0000000000000028 rcu_lock_acquire include/linux/rcupdate.h:259 [inline] rcu_read_lock include/linux/rcupdate.h:648 [inline] is_bpf_text_address+0x36/0x160 kernel/bpf/core.c:700 kernel_text_address kernel/extable.c:151 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:120 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:401 [inline] ____kasan_kmalloc.constprop.0+0x7f/0xa0 mm/kasan/common.c:429 kasan_slab_alloc include/linux/kasan.h:209 [inline] slab_post_alloc_hook mm/slab.h:512 [inline] slab_alloc mm/slab.c:3315 [inline] kmem_cache_alloc+0x1ab/0x4c0 mm/slab.c:3486 kmem_cache_zalloc include/linux/slab.h:672 [inline] fill_pool+0x264/0x5c0 lib/debugobjects.c:171 __debug_object_init+0x7a/0xd10 lib/debugobjects.c:560 debug_object_init lib/debugobjects.c:615 [inline] debug_object_activate+0x32c/0x3e0 lib/debugobjects.c:701 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline] __call_rcu kernel/rcu/tree.c:2951 [inline] call_rcu+0x2c/0x700 kernel/rcu/tree.c:3038 task_work_run+0xdd/0x190 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fbeabb97a4b Code: 48 8b 34 24 eb c5 66 0f 1f 84 00 00 00 00 00 48 c7 c0 ff ff ff ff eb c8 0f 1f 80 00 00 00 00 48 63 7f 70 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 f3 c3 0f 1f 00 48 8b 15 19 74 32 00 f7 d8 RSP: 002b:00007ffeef441fa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 000055f65b98a570 RCX: 00007fbeabb97a4b RDX: 00007fbeabebb900 RSI: 0000000000000001 RDI: 0000000000000013 RBP: 00007fbeabebc440 R08: 00007fbead638500 R09: 0000000000000030 R10: 00007fbead638500 R11: 0000000000000206 R12: 0000000000000000 R13: 00007ffeef442088 R14: 00007ffeef442080 R15: 00007fbead33cfa0