watchdog: BUG: soft lockup - CPU#0 stuck for 95s! [syz-executor.5:6142] Modules linked in: irq event stamp: 148312 hardirqs last enabled at (148311): [] console_unlock+0x7c0/0x9c0 kernel/printk/printk.c:2651 hardirqs last disabled at (148312): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (148284): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (148284): [] __irq_exit_rcu kernel/softirq.c:636 [inline] softirqs last enabled at (148284): [] irq_exit_rcu+0x229/0x270 kernel/softirq.c:648 softirqs last disabled at (141857): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (141857): [] __irq_exit_rcu kernel/softirq.c:636 [inline] softirqs last disabled at (141857): [] irq_exit_rcu+0x229/0x270 kernel/softirq.c:648 CPU: 0 PID: 6142 Comm: syz-executor.5 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:695 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:140 [inline] RIP: 0010:console_unlock+0x7ea/0x9c0 kernel/printk/printk.c:2651 Code: 48 c7 c0 80 54 57 89 48 c1 e8 03 80 3c 18 00 0f 85 62 01 00 00 48 83 3d 23 5f 00 08 00 0f 84 8d 00 00 00 fb 66 0f 1f 44 00 00 d8 fd ff ff 48 89 c1 48 c7 c2 60 1a ec 87 be 40 00 00 00 48 c7 RSP: 0018:ffffc90000d3ec58 EFLAGS: 00000286 RAX: 1ffffffff12aea90 RBX: dffffc0000000000 RCX: 1ffffffff1846a62 RDX: 0000000000000000 RSI: ffffffff87eb6120 RDI: ffffffff8833f160 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8c234ba7 R10: fffffbfff1846974 R11: 615f6e616d746162 R12: ffffffff89f01808 R13: 0000000000000000 R14: ffffffff89f017d0 R15: 0000000000000200 FS: 00000000017ce400(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005560a9b094b8 CR3: 000000010e514002 CR4: 00000000001706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vprintk_emit+0x1d1/0x4c0 kernel/printk/printk.c:2174 printk+0xad/0xde kernel/printk/printk.c:2216 batadv_check_known_mac_addr.cold+0x1f/0x28 net/batman-adv/hard-interface.c:516 batadv_hard_if_event+0x3d5/0x1150 net/batman-adv/hard-interface.c:969 notifier_call_chain+0x94/0x170 kernel/notifier.c:83 call_netdevice_notifiers_extack net/core/dev.c:2135 [inline] call_netdevice_notifiers net/core/dev.c:2149 [inline] dev_set_mac_address+0x261/0x360 net/core/dev.c:9083 dev_set_mac_address_user+0x28/0x40 net/core/dev.c:9097 do_setlink+0x12a0/0x2cb0 net/core/rtnetlink.c:2676 __rtnl_newlink+0xaca/0x13b0 net/core/rtnetlink.c:3393 rtnl_newlink+0x5a/0x90 net/core/rtnetlink.c:3508 rtnetlink_rcv_msg+0x31d/0x8d0 net/core/rtnetlink.c:5574 netlink_rcv_skb+0x118/0x370 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x42e/0x700 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x704/0xbf0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg+0xab/0xe0 net/socket.c:723 __sys_sendto+0x1a4/0x270 net/socket.c:2019 __do_sys_sendto net/socket.c:2031 [inline] __se_sys_sendto net/socket.c:2027 [inline] __x64_sys_sendto+0xd8/0x1b0 net/socket.c:2027 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: 0033:0x416ff6 Code: 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 72 c3 90 55 48 83 ec 30 44 89 4c 24 2c 4c 89 RSP: 002b:00007ffd74eb0ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a93700 RCX: 0000000000416ff6 RDX: 000000000000002c RSI: 0000000000a93750 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd74eb0af4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000a93750