rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10570 ticks this GP) idle=995/1/0x4000000000000000 softirq=9044/9048 fqs=4981 (t=10500 jiffies g=10593 q=739) NMI backtrace for cpu 1 CPU: 1 PID: 4775 Comm: syz.3.93 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline] rcu_pending kernel/rcu/tree.c:3932 [inline] rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619 update_process_times+0x196/0x200 kernel/time/timer.c:1818 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__sanitizer_cov_trace_pc+0x41/0x60 kernel/kcov.c:211 Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 74 2c 8b 91 10 16 00 00 83 fa 02 75 21 48 8b 91 18 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 14 16 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 RSP: 0018:ffffc90003f6f760 EFLAGS: 00000246 RAX: ffffffff8437b8e7 RBX: 0000000000000002 RCX: ffff8880199b5940 RDX: ffffc9000db69000 RSI: 000000000007ffff RDI: 0000000000000002 RBP: 0000000000000401 R08: ffffffff8437b8d4 R09: ffffed100c15240e R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88807cc6b1d0 R14: ffff888060a91b82 R15: 0000000000000040 radix_tree_load_root lib/radix-tree.c:393 [inline] radix_tree_next_chunk+0x697/0xb30 lib/radix-tree.c:1176 radix_tree_gang_lookup_tag+0x18e/0x430 lib/radix-tree.c:1311 xfs_icwalk_ag+0x274/0x1a10 fs/xfs/xfs_icache.c:1680 xfs_icwalk fs/xfs/xfs_icache.c:1773 [inline] xfs_reclaim_inodes+0x1f3/0x300 fs/xfs/xfs_icache.c:993 xfs_unmount_flush_inodes fs/xfs/xfs_mount.c:554 [inline] xfs_unmountfs+0x14f/0x270 fs/xfs/xfs_mount.c:1016 xfs_fs_put_super+0x65/0x2b0 fs/xfs/xfs_super.c:1096 generic_shutdown_super+0x130/0x310 fs/super.c:475 kill_block_super+0x7a/0xe0 fs/super.c:1427 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f35025f84ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3500466e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffec RBX: 00007f3500466ef0 RCX: 00007f35025f84ca RDX: 0000000020009800 RSI: 0000000020000140 RDI: 00007f3500466eb0 RBP: 0000000020009800 R08: 00007f3500466ef0 R09: 0000000001000000 R10: 0000000001000000 R11: 0000000000000246 R12: 0000000020000140 R13: 00007f3500466eb0 R14: 000000000000985b R15: 00000000200000c0