watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:24993]
Modules linked in:
CPU: 1 PID: 24993 Comm: syz-executor.0 Not tainted 5.10.186-syzkaller-01315-g59b65efafe20 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 05 48 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d f6 47 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04
RSP: 0018:ffffc90000e365e0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff920001c6cc0 RCX: 1ffffffff0cd8d87
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffc90000e36620
RBP: ffffc90000e36690 R08: dffffc0000000000 R09: ffffed103ee2ae4b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7157254 R14: 0000000000000001 R15: 0000000000000246
FS:  00007f3d6a808700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d6a808718 CR3: 0000000119e5b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline]
 __pv_queued_spin_lock_slowpath+0x407/0xc70 kernel/locking/qspinlock.c:473
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:183 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 __dev_xmit_skb net/core/dev.c:3808 [inline]
 __dev_queue_xmit+0xbc0/0x28e0 net/core/dev.c:4147
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4215
 neigh_hh_output include/net/neighbour.h:501 [inline]
 neigh_output include/net/neighbour.h:515 [inline]
 ip6_finish_output2+0xeec/0x1850 net/ipv6/ip6_output.c:145
 __ip6_finish_output+0x658/0x820 net/ipv6/ip6_output.c:210
 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:220
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:243
 dst_output include/net/dst.h:437 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ip6_xmit+0xc71/0x1580 net/ipv6/ip6_output.c:347
 inet6_csk_xmit+0x267/0x370 net/ipv6/inet6_connection_sock.c:135
 __tcp_transmit_skb+0x1de4/0x3870 net/ipv4/tcp_output.c:1402
 tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:3830 [inline]
 tcp_connect+0x2bcc/0x4c80 net/ipv4/tcp_output.c:3869
 tcp_v6_connect+0x1519/0x1f00 net/ipv6/tcp_ipv6.c:335
 __inet_stream_connect+0x276/0xd80 net/ipv4/af_inet.c:665
 tcp_sendmsg_fastopen+0x373/0x590 net/ipv4/tcp.c:1180
 tcp_sendmsg_locked+0x349d/0x3ae0 net/ipv4/tcp.c:1222
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1451
 inet6_sendmsg+0xa1/0xc0 net/ipv6/af_inet6.c:653
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 __sys_sendto+0x545/0x700 net/socket.c:1987
 __do_sys_sendto net/socket.c:1999 [inline]
 __se_sys_sendto net/socket.c:1995 [inline]
 __x64_sys_sendto+0xe5/0x100 net/socket.c:1995
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f3d6bad7389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f3d6a808168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f3d6bbf7120 RCX: 00007f3d6bad7389
RDX: adf29f33fb903ae1 RSI: 00000000200000c0 RDI: 0000000000000006
RBP: 00007f3d6bb22493 R08: 0000000020b63fe4 R09: 000000000000001c
R10: 0000000020000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe12c1306f R14: 00007f3d6a808300 R15: 0000000000022000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24989 Comm: syz-executor.0 Not tainted 5.10.186-syzkaller-01315-g59b65efafe20 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 05 48 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d f6 47 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04
RSP: 0018:ffffc90000f06b00 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff920001e0d64 RCX: ffffffff8150a3c4
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90000f06b40
RBP: ffffc90000f06bb0 R08: dffffc0000000000 R09: ffffed10214d3416
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88810a69a0ac R14: 0000000000000003 R15: 0000000000000246
FS:  00007f3d6a829700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556904728 CR3: 0000000119e5b000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:183 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 get_dist_table+0x207/0x2e0 net/sched/sch_netem.c:798
 netem_change+0x9d7/0x1fb0 net/sched/sch_netem.c:995
 netem_init+0x5b/0xb0 net/sched/sch_netem.c:1075
 qdisc_create+0x879/0x12d0 net/sched/sch_api.c:1264
 tc_modify_qdisc+0x8a4/0x13f0
 rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5571
 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2496
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5589
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0xa46/0xd00 net/netlink/af_netlink.c:1915
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2357
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2411
 __sys_sendmsg net/socket.c:2440 [inline]
 __do_sys_sendmsg net/socket.c:2449 [inline]
 __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2447
 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2447
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f3d6bad7389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f3d6a829168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3d6bbf7050 RCX: 00007f3d6bad7389
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007f3d6bb22493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe12c1306f R14: 00007f3d6a829300 R15: 0000000000022000