IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor970:8348] Modules linked in: irq event stamp: 293077 hardirqs last enabled at (293076): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (293076): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (293076): [] ktime_get+0x235/0x2f0 kernel/time/timekeeping.c:756 hardirqs last disabled at (293077): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (60): [] netlink_insert+0x156/0x11d0 net/netlink/af_netlink.c:603 softirqs last disabled at (68): [] __dev_queue_xmit+0x1e2/0x2e00 net/core/dev.c:3773 CPU: 0 PID: 8348 Comm: syz-executor970 Not tainted 4.19.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:cake_heapify+0x2cd/0x340 net/sched/sch_cake.c:1403 Code: e8 38 d5 ca fa 44 0f b7 6c 24 06 89 ee 44 89 ef e8 18 d6 ca fa 41 39 ed 0f 85 45 fe ff ff 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e <41> 5f e9 0c d5 ca fa e8 b7 95 00 fb e9 fc fd ff ff e8 1d 95 00 fb RSP: 0018:ffff888095f07670 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8880922b07c0 RCX: ffffffff86978838 RDX: 0000000000000932 RSI: ffff8880ade9e0c0 RDI: 0000000000000004 RBP: dffffc0000000000 R08: ffffffff8c663018 R09: 0000000000000932 R10: 0000000000000004 R11: ffffffff8c66301b R12: 0000000000000931 R13: 0000000000000300 R14: ffff88808a800180 R15: dffffc0000000000 FS: 00007fef04876700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a18d4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cake_drop net/sched/sch_cake.c:1468 [inline] cake_enqueue+0x1296/0x33d0 net/sched/sch_cake.c:1844 __dev_xmit_skb net/core/dev.c:3494 [inline] __dev_queue_xmit+0x140a/0x2e00 net/core/dev.c:3807 __netlink_deliver_tap_skb net/netlink/af_netlink.c:303 [inline] __netlink_deliver_tap net/netlink/af_netlink.c:321 [inline] netlink_deliver_tap+0x8fb/0xb00 net/netlink/af_netlink.c:334 netlink_deliver_tap_kernel net/netlink/af_netlink.c:343 [inline] netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x545/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4519b9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fef04876318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004d04d8 RCX: 00000000004519b9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000005 RBP: 00000000004d04d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049f7f0 R13: 00007ffc1b725baf R14: 00007fef04876400 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60