rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2636 jiffies s: 3969 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7215 Comm: syz-executor.1 Not tainted 6.5.0-rc7-next-20230823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:debug_object_deactivate lib/debugobjects.c:785 [inline]
RIP: 0010:debug_object_deactivate+0x11b/0x320 lib/debugobjects.c:771
Code: 49 8d 8c 24 08 37 41 92 49 8d 84 24 00 37 41 92 48 89 cf 48 89 4c 24 18 48 89 44 24 10 e8 bd 74 16 06 48 89 c6 48 8b 44 24 10 <48> c1 e8 03 80 3c 18 00 0f 85 ab 01 00 00 49 8b 9c 24 00 37 41 92
RSP: 0018:ffffc900001f0d40 EFLAGS: 00000096
RAX: ffffffff924c18c8 RBX: dffffc0000000000 RCX: ffffffff8169051e
RDX: 1ffffffff249831c RSI: 0000000000000002 RDI: ffffc900001f0cb0
RBP: ffffc900001f0e30 R08: 0000000000000001 R09: fffff5200003e196
R10: 0000000000000003 R11: dffffc0000000000 R12: 00000000000ae1c8
R13: 1ffff9200003e1ac R14: ffffffff8a8f2b80 R15: ffff888079572340
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff15e626fe8 CR3: 0000000026354000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
 debug_deactivate kernel/time/hrtimer.c:483 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1656 [inline]
 __hrtimer_run_queues+0x470/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__orc_find+0x8b/0x130 arch/x86/kernel/unwind_orc.c:100
Code: 4d 00 49 8d 5f 04 4c 89 3c 24 e8 70 95 4d 00 48 39 dd 72 67 e8 66 95 4d 00 48 89 e8 48 29 d8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 <48> 01 d0 48 d1 f8 4c 8d 3c 83 4c 89 fa 48 c1 ea 03 42 0f b6 0c 32
RSP: 0018:ffffc90015c6f660 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8ee5cfdc RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff813a3cda RDI: 0000000000000006
RBP: ffffffff8ee5cfdc R08: 0000000000000006 R09: ffffffff81dd4c5a
R10: ffffffff81dd4c25 R11: 0000000000000001 R12: ffffffff81dd4c5a
R13: ffffffff81dd4c25 R14: dffffc0000000000 R15: ffffffff8ee5cfd8
 orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
 unwind_next_frame+0x329/0x2390 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
 slab_free mm/slub.c:3809 [inline]
 kmem_cache_free+0xf0/0x480 mm/slub.c:3831
 anon_vma_chain_free mm/rmap.c:147 [inline]
 unlink_anon_vmas+0x455/0x800 mm/rmap.c:448
 free_pgtables+0x309/0x800 mm/memory.c:399
 exit_mmap+0x383/0xa60 mm/mmap.c:3221
 __mmput+0x12a/0x4d0 kernel/fork.c:1356
 mmput+0x62/0x70 kernel/fork.c:1378
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9b4/0x2a20 kernel/exit.c:861
 __do_sys_exit kernel/exit.c:991 [inline]
 __se_sys_exit kernel/exit.c:989 [inline]
 __x64_sys_exit+0x42/0x50 kernel/exit.c:989
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff15d87cae9
Code: Unable to access opcode bytes at 0x7ff15d87cabf.
RSP: 002b:0000000020003318 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007ff15d87cae9
RDX: 00007ff15d87cae9 RSI: 0000000020003340 RDI: 000000000000000b
RBP: 00007ff15d8c847a R08: 0000000020003980 R09: 0000000000000000
R10: 0000000020003980 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff15d99c050 R15: 00007fffad1b4e98
 </TASK>