rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2662 jiffies s: 485 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5086 Comm: syz-executor110 Not tainted 6.5.0-rc6-syzkaller-01637-gcb39c35783f2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200 Code: 76 02 9a 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1e fa 65 8b 05 ed 98 7d 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffffc90000007bb8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffffc90011cf3390 RCX: ffffffff885aaba2 RDX: ffff8880729b5940 RSI: 0000000000000100 RDI: 0000000000000006 RBP: ffff88807b5e5b00 R08: 0000000000000006 R09: 000000000001c9c3 R10: 0000000000000000 R11: 9d7d12de2fd8fe64 R12: 000000000001c9c3 R13: 0000000000000000 R14: fffffff0a3da8872 R15: 0000000000000001 FS: 00007fa2ffe716c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe085e09c0 CR3: 0000000024cf7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pie_calculate_probability+0x41c/0x850 net/sched/sch_pie.c:409 fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x218/0x965 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:dump_stack_lvl+0x15c/0x1b0 lib/dump_stack.c:108 Code: 63 f7 e8 b7 03 64 f7 e8 72 ae 6a f7 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 30 ff 63 f7 48 85 db 75 37 e8 96 03 64 f7 fb 5b <5d> 41 5c e9 8c 03 64 f7 e8 87 03 64 f7 e8 42 79 13 00 48 89 de 31 RSP: 0018:ffffc9000460f0a0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff920008c1e1b RCX: 0000000000000000 RDX: ffff8880729b5940 RSI: ffffffff8a221cfa RDI: 0000000000000007 RBP: ffffffff8bb00040 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880729b5940 warn_alloc+0x24a/0x3a0 mm/page_alloc.c:3299 __vmalloc_area_node mm/vmalloc.c:3125 [inline] __vmalloc_node_range+0x1027/0x1540 mm/vmalloc.c:3316 kvmalloc_node+0x14b/0x1a0 mm/util.c:629 kvmalloc include/linux/slab.h:720 [inline] kvmalloc_array include/linux/slab.h:738 [inline] kvcalloc include/linux/slab.h:743 [inline] fq_pie_init+0x555/0x8f0 net/sched/sch_fq_pie.c:429 qdisc_create+0x4f7/0x10a0 net/sched/sch_api.c:1326 tc_modify_qdisc+0x4a4/0x1bf0 net/sched/sch_api.c:1720 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6427 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:728 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:751 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2538 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2592 __sys_sendmsg+0x117/0x1e0 net/socket.c:2621 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: 0033:0x7fa2ffeb0929 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa2ffe71238 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa2fff3b328 RCX: 00007fa2ffeb0929 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 RBP: 00007fa2fff3b320 R08: 00000000ffffffff R09: 00007fa2ffe716c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa2fff3b32c R13: 0000000000000011 R14: 00007ffe085b6920 R15: 00007ffe085b6a08 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.773 msecs