rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=89f/1/0x4000000000000000 softirq=65515/65517 fqs=5235 (t=10502 jiffies g=104081 q=1617) NMI backtrace for cpu 0 CPU: 0 PID: 24236 Comm: syz-executor.1 Not tainted 5.18.0-rc2-syzkaller-00455-gd08ed852560e #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:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x262/0x3f0 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:639 [inline] check_cpu_stall kernel/rcu/tree_stall.h:723 [inline] rcu_pending kernel/rcu/tree.c:3923 [inline] rcu_sched_clock_irq.cold+0xa1/0x8d6 kernel/rcu/tree.c:2625 update_process_times+0x16d/0x200 kernel/time/timer.c:1785 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473 __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:645 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline] RIP: 0010:__local_bh_disable_ip+0x18/0xc0 kernel/softirq.c:310 Code: 83 ec 80 5b 5d c3 e8 d7 13 18 08 0f 1f 80 00 00 00 00 65 8b 05 a9 c2 ba 7e a9 00 00 0f 00 55 53 89 f3 0f 85 97 00 00 00 9c 5d 65 01 1d 90 c2 ba 7e 65 8b 05 89 c2 ba 7e 48 31 d8 f6 c4 ff 74 RSP: 0018:ffffc900037fefc8 EFLAGS: 00000246 RAX: 0000000000000201 RBX: 0000000000000201 RCX: ffffc900102d1000 RDX: 0000000000040000 RSI: 0000000000000201 RDI: ffffffff88fd4784 RBP: 0000000000000246 R08: 0000000000000400 R09: ffffffff900319f7 R10: ffffffff88fd4921 R11: 0000000000000000 R12: 0000000000000100 R13: ffff888049f8e798 R14: 0000000000000189 R15: dffffc0000000000 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline] _raw_spin_lock_bh+0x13/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:354 [inline] batadv_tt_local_purge+0x114/0x370 net/batman-adv/translation-table.c:1355 batadv_tt_local_resize_to_mtu+0x8e/0x130 net/batman-adv/translation-table.c:3957 batadv_hardif_activate_interface.part.0.cold+0x65/0x1ba net/batman-adv/hard-interface.c:662 batadv_hardif_activate_interface net/batman-adv/hard-interface.c:753 [inline] batadv_hardif_enable_interface+0xaba/0xac0 net/batman-adv/hard-interface.c:745 batadv_softif_slave_add+0x64/0x130 net/batman-adv/soft-interface.c:839 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2534 __rtnl_newlink+0x13b3/0x1760 net/core/rtnetlink.c:3500 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3531 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5993 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:705 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:725 ____sys_sendmsg+0x6e2/0x800 net/socket.c:2413 ___sys_sendmsg+0xf3/0x170 net/socket.c:2467 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2496 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: 0033:0x7fb4640890e9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb46520b168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb46419bf60 RCX: 00007fb4640890e9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000013 RBP: 00007fb4640e308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd08402a6f R14: 00007fb46520b300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 83 ec 80 sub $0xffffff80,%esp 3: 5b pop %rbx 4: 5d pop %rbp 5: c3 retq 6: e8 d7 13 18 08 callq 0x81813e2 b: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 12: 65 8b 05 a9 c2 ba 7e mov %gs:0x7ebac2a9(%rip),%eax # 0x7ebac2c2 19: a9 00 00 0f 00 test $0xf0000,%eax 1e: 55 push %rbp 1f: 53 push %rbx 20: 89 f3 mov %esi,%ebx 22: 0f 85 97 00 00 00 jne 0xbf 28: 9c pushfq 29: 5d pop %rbp * 2a: fa cli <-- trapping instruction 2b: 65 01 1d 90 c2 ba 7e add %ebx,%gs:0x7ebac290(%rip) # 0x7ebac2c2 32: 65 8b 05 89 c2 ba 7e mov %gs:0x7ebac289(%rip),%eax # 0x7ebac2c2 39: 48 31 d8 xor %rbx,%rax 3c: f6 c4 ff test $0xff,%ah 3f: 74 .byte 0x74