RBP: 00007f2a216ab493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8520c28f R14: 00007f2a211d3300 R15: 0000000000022000 watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.0:433] Modules linked in: CPU: 0 PID: 433 Comm: syz-executor.0 Not tainted 5.10.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:104 [inline] RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:923 [inline] RIP: 0010:kvm_wait+0x3e/0x40 arch/x86/kernel/kvm.c:903 Code: 40 38 d6 74 03 50 9d c3 f6 c4 02 75 0f 0f 1f 44 00 00 0f 00 2d f1 76 35 01 f4 eb e9 0f 1f 44 00 00 0f 00 2d e2 76 35 01 fb f4 d9 8b 05 2a 89 d7 01 83 f8 ff 74 06 85 c0 0f 95 c0 c3 55 48 89 RSP: 0018:ffffc900006077b8 EFLAGS: 00000242 RAX: 0000000000000246 RBX: ffff888237c4a980 RCX: 0000000000000008 RDX: 0000000000000003 RSI: 0000000000000003 RDI: ffff8881059d84ac RBP: ffffc900006077f8 R08: ffff88823fff1980 R09: 0000000000000000 R10: 0000000000000001 R11: ffff888237c4a980 R12: ffff8881059d84ac R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000100 FS: 00007f2a211d3700(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 000000010e287000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0x39/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] get_dist_table+0x92/0xd0 net/sched/sch_netem.c:798 netem_change+0x4da/0x5e0 net/sched/sch_netem.c:988 netem_init+0x41/0x60 net/sched/sch_netem.c:1075 qdisc_create+0x1a9/0x4b0 net/sched/sch_api.c:1264 tc_modify_qdisc+0x13c/0x8d0 net/sched/sch_api.c:1689 rtnetlink_rcv_msg+0x132/0x370 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x4e/0xf0 net/netlink/af_netlink.c:2496 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:5589 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x250/0x340 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x239/0x470 net/netlink/af_netlink.c:1915 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0x35/0x40 net/socket.c:671 ____sys_sendmsg+0x23e/0x260 net/socket.c:2356 ___sys_sendmsg+0x74/0xc0 net/socket.c:2410 __sys_sendmsg+0x5d/0xb0 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x1a/0x20 net/socket.c:2446 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f2a21660389 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:00007f2a211d3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2a2177ff80 RCX: 00007f2a21660389 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f2a216ab493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8520c28f R14: 00007f2a211d3300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x5a/0x60 drivers/acpi/processor_idle.c:575