batman_adv: batadv0: Interface activated: batadv_slave_1 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-executor.1:9587] Modules linked in: irq event stamp: 40450 hardirqs last enabled at (40449): [] restore_regs_and_return_to_kernel+0x0/0x2a hardirqs last disabled at (40450): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (36194): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (35883): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (35883): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 9587 Comm: syz-executor.1 Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809767e6c0 task.stack: ffff88809cc30000 RIP: 0010:cpu_clock_event_update kernel/events/core.c:8831 [inline] RIP: 0010:cpu_clock_event_read+0x1f/0x30 kernel/events/core.c:8862 RSP: 0018:ffff88809cc37280 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 000000f9a978d3d4 RBX: ffff888097fc4040 RCX: 0000000000000001 RDX: 000000f9a978d346 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff88809cc37370 R08: ffff88823fff7018 R09: ffff88823fff700f R10: ffff88823fff7017 R11: 000000fba3f55f2f R12: dffffc0000000000 R13: ffffed1013986eaa R14: ffff88809cc37528 R15: 0000000000000010 FS: 00007f90aef14700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020f5e000 CR3: 00000000a2adf000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_output_read_group kernel/events/core.c:5891 [inline] perf_output_read+0xc28/0x1090 kernel/events/core.c:5930 perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5972 __perf_event_output kernel/events/core.c:6285 [inline] perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6298 __perf_event_overflow+0x113/0x310 kernel/events/core.c:7547 perf_swevent_overflow kernel/events/core.c:7623 [inline] perf_swevent_event+0x299/0x460 kernel/events/core.c:7651 do_perf_sw_event kernel/events/core.c:7764 [inline] ___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7795 __perf_sw_event+0x4f/0x100 kernel/events/core.c:7807 perf_sw_event include/linux/perf_event.h:1046 [inline] __do_page_fault+0x692/0xad0 arch/x86/mm/fault.c:1483 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181 RSP: 0018:ffff88809cc37a78 EFLAGS: 00010206 RAX: ffffed10130a488a RBX: 000000000000444a RCX: 0000000000003f15 RDX: 000000000000444a RSI: 0000000020f5e000 RDI: ffff888098520535 RBP: 0000000020f5dacb R08: 0000000000000001 R09: ffffed10130a4889 R10: ffff888098524449 R11: 0000000000000000 R12: ffff888098520000 R13: 00007ffffffff000 R14: 0000000020f61f15 R15: ffff888098520000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline] copyin+0x99/0xc0 lib/iov_iter.c:146 _copy_from_iter_full+0x197/0x690 lib/iov_iter.c:608 copy_from_iter_full include/linux/uio.h:126 [inline] skb_do_copy_data_nocache include/net/sock.h:1889 [inline] skb_copy_to_page_nocache include/net/sock.h:1915 [inline] tcp_sendmsg_locked+0x23fc/0x2ef0 net/ipv4/tcp.c:1360 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665f9 RSP: 002b:00007f90aef14188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000053 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffef143cabf R14: 00007f90aef14300 R15: 0000000000022000 Code: 24 e8 06 79 1b 00 48 8b 04 24 eb d6 53 48 89 fb e8 97 d1 f1 ff 65 8b 3d 50 2d 9e 7e e8 4b 23 d7 ff 48 89 c2 48 87 93 c8 01 00 00 <48> 29 d0 48 01 83 90 00 00 00 5b c3 0f 1f 44 00 00 41 57 49 89 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff8722b3ee