rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=509/1/0x4000000000000000 softirq=115503/115504 fqs=5228 (t=10503 jiffies g=163785 q=40411) NMI backtrace for cpu 0 CPU: 0 PID: 13866 Comm: syz-executor.3 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_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline] check_cpu_stall kernel/rcu/tree_stall.h:711 [inline] rcu_pending kernel/rcu/tree.c:3878 [inline] rcu_sched_clock_irq.cold+0x9d/0x746 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:trace_lock_release include/trace/events/lock.h:58 [inline] RIP: 0010:lock_release+0x473/0x720 kernel/locking/lockdep.c:5648 Code: 06 48 8d 3c c5 90 e9 70 8d e8 19 a2 61 00 48 0f a3 1d 81 0a 14 0c 0f 83 4a fc ff ff 65 ff 05 e4 90 a5 7e 48 8b 1d 9d d9 ff 0b <48> 85 db 74 30 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa RSP: 0018:ffffc90009a6f548 EFLAGS: 00000203 RAX: 0000000000000001 RBX: ffff88807f4e2e10 RCX: ffffffff815cdf07 RDX: fffffbfff1ae1d33 RSI: 0000000000000008 RDI: ffffffff8d70e990 RBP: 1ffff9200134deab R08: 0000000000000000 R09: ffffffff8d70e997 R10: fffffbfff1ae1d32 R11: 0000000000000000 R12: ffffffff8b983a20 R13: 0000000000000000 R14: ffff8880365d0000 R15: ffff88808dfcf1c0 rcu_lock_release include/linux/rcupdate.h:273 [inline] rcu_read_unlock include/linux/rcupdate.h:721 [inline] is_bpf_text_address+0x99/0x170 kernel/bpf/core.c:710 kernel_text_address kernel/extable.c:124 [inline] kernel_text_address+0x39/0x80 kernel/extable.c:93 __kernel_text_address+0x9/0x30 kernel/extable.c:78 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:122 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:590 [inline] io_add_buffers fs/io_uring.c:4405 [inline] io_provide_buffers fs/io_uring.c:4439 [inline] io_issue_sqe+0x2887/0x7010 fs/io_uring.c:6705 __io_queue_sqe fs/io_uring.c:6974 [inline] io_queue_sqe fs/io_uring.c:7016 [inline] io_submit_sqe fs/io_uring.c:7219 [inline] io_submit_sqes+0x1bca/0x8a20 fs/io_uring.c:7325 __do_sys_io_uring_enter+0xf6e/0x1f50 fs/io_uring.c:10039 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: 0033:0x7f1937864ae9 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:00007f1934db9188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f1937978020 RCX: 00007f1937864ae9 RDX: 0000000000000000 RSI: 00000000000000b4 RDI: 0000000000000003 RBP: 00007f19378bef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1937eabb2f R14: 00007f1934db9300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 8d 3c c5 90 e9 70 lea -0x728f1670(,%rax,8),%rdi 7: 8d 8: e8 19 a2 61 00 callq 0x61a226 d: 48 0f a3 1d 81 0a 14 bt %rbx,0xc140a81(%rip) # 0xc140a96 14: 0c 15: 0f 83 4a fc ff ff jae 0xfffffc65 1b: 65 ff 05 e4 90 a5 7e incl %gs:0x7ea590e4(%rip) # 0x7ea59106 22: 48 8b 1d 9d d9 ff 0b mov 0xbffd99d(%rip),%rbx # 0xbffd9c6 * 29: 48 85 db test %rbx,%rbx <-- trapping instruction 2c: 74 30 je 0x5e 2e: 48 8d 7b 08 lea 0x8(%rbx),%rdi 32: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 39: fc ff df 3c: 48 89 fa mov %rdi,%rdx