watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [kworker/u4:7:16885] Modules linked in: irq event stamp: 13935105 hardirqs last enabled at (13935104): [] kvm_wait+0x1a2/0x200 hardirqs last disabled at (13935105): [] sysvec_apic_timer_interrupt+0xa/0xb0 arch/x86/kernel/apic/apic.c:1096 softirqs last enabled at (13881374): [] batadv_forw_packet_steal+0x145/0x160 softirqs last disabled at (13881384): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (13881384): [] batadv_tt_local_commit_changes+0x1a/0x30 net/batman-adv/translation-table.c:3717 CPU: 0 PID: 16885 Comm: kworker/u4:7 Not tainted 5.15.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:kvm_wait+0x1b4/0x200 arch/x86/kernel/kvm.c:918 Code: e0 48 c1 e8 03 42 0f b6 04 28 84 c0 75 42 45 0f b6 34 24 e8 ee bf 4e 00 44 3a 74 24 1c 75 10 66 90 0f 00 2d 1e 84 50 09 fb f4 c8 fe ff ff fb e9 c2 fe ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 54 RSP: 0018:ffffc90004dff760 EFLAGS: 00000246 RAX: 3bccb978eece3100 RBX: 1ffff920009bfef0 RCX: ffffffff8162e998 RDX: dffffc0000000000 RSI: ffffffff8a8b0b60 RDI: ffffffff8ad87980 RBP: ffffc90004dff830 R08: dffffc0000000000 R09: fffffbfff1f7b240 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888075405330 R13: dffffc0000000000 R14: 0000000000000003 R15: ffffc90004dff7a0 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020042030 CR3: 00000000430ba000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x269/0x370 kernel/locking/spinlock_debug.c:115 spin_lock_bh include/linux/spinlock.h:368 [inline] batadv_tt_local_commit_changes+0x1a/0x30 net/batman-adv/translation-table.c:3717 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:812 [inline] batadv_iv_ogm_schedule+0x26c/0x1000 net/batman-adv/bat_iv_ogm.c:869 batadv_iv_send_outstanding_bat_ogm_packet+0x6fa/0x800 net/batman-adv/bat_iv_ogm.c:1713 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3740 Comm: syz-executor.1 Not tainted 5.15.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:check_kcov_mode kernel/kcov.c:174 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x32/0x60 kernel/kcov.c:197 Code: d4 4d 82 7e 65 8b 15 d5 4d 82 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 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 RSP: 0018:ffffc90004fbe288 EFLAGS: 00000046 RAX: ffffffff8186a36b RBX: 0000000000000000 RCX: ffff888025c70000 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004fbe348 R08: ffffffff8186a350 R09: ffffed1008342c69 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920009f7c5c R14: ffffc90004fbe2e0 R15: 0000000000000201 FS: 00007fb7894e66c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200bd038 CR3: 000000007400e000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hardirqs_on+0x4b/0x80 kernel/trace/trace_preemptirq.c:44 __local_bh_enable_ip+0x164/0x1f0 kernel/softirq.c:388 spin_unlock_bh include/linux/spinlock.h:408 [inline] batadv_tt_local_purge_pending_clients+0x2f1/0x380 net/batman-adv/translation-table.c:3673 batadv_tt_local_resize_to_mtu+0x90/0x130 net/batman-adv/translation-table.c:3957 batadv_update_min_mtu net/batman-adv/hard-interface.c:647 [inline] batadv_hardif_activate_interface+0x1ca/0x390 net/batman-adv/hard-interface.c:674 batadv_hard_if_event+0xbc/0x17a0 net/batman-adv/hard-interface.c:965 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 __dev_notify_flags+0x304/0x610 dev_change_flags+0xe7/0x190 net/core/dev.c:8863 vlan_device_event+0x442/0x1dd0 net/8021q/vlan.c:469 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391 __dev_notify_flags+0x304/0x610 dev_change_flags+0xe7/0x190 net/core/dev.c:8863 do_setlink+0xcd1/0x3ae0 net/core/rtnetlink.c:2741 rtnl_group_changelink net/core/rtnetlink.c:3270 [inline] __rtnl_newlink net/core/rtnetlink.c:3439 [inline] rtnl_newlink+0x10b0/0x2070 net/core/rtnetlink.c:3549 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5630 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2505 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2429 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2483 __sys_sendmsg net/socket.c:2512 [inline] __do_sys_sendmsg net/socket.c:2521 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2519 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fb78afa6ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007fb7894e60c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb78b0c6120 RCX: 00007fb78afa6ae9 RDX: 0000000000000000 RSI: 0000000020006440 RDI: 000000000000000a RBP: 00007fb78aff247a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fb78b0c6120 R15: 00007ffcd3914108