RBP: 00007fd66ed1106b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd66ef02038 R14: 00007fd66ef01fa0 R15: 00007ffea6ffafa8
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 263s! [syz.9.3928:16073]
Modules linked in:
CPU: 0 PID: 16073 Comm: syz.9.3928 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:qdisc_tree_reduce_backlog+0x174/0x380 net/sched/sch_api.c:804
Code: 80 3c 28 00 74 08 4c 89 f7 e8 28 35 ce fd 4d 89 e7 85 db 74 07 e8 2c bf 8e fd eb 7a 4d 8b 36 49 8d 46 20 48 89 c3 48 c1 eb 03 <42> 80 3c 2b 00 74 0d 49 8d 7e 20 e8 fc 34 ce fd 49 8d 46 20 48 83
RSP: 0018:ffffc90000fc6f28 EFLAGS: 00000a02
RAX: ffffffff8595e4a0 RBX: 1ffffffff0b2bc94 RCX: ffff888120a7e2c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000fc6f70 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001f8de0 R12: ffff88810599e800
R13: dffffc0000000000 R14: ffffffff8595e480 R15: ffff88810599e800
FS:  00007fd66d6d36c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd30ae5608 CR3: 000000011c24e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 codel_change+0x8e4/0xc20 net/sched/sch_codel.c:218
 codel_init+0x1a3/0x390 net/sched/sch_codel.c:237
 qdisc_create+0x807/0x11a0 net/sched/sch_api.c:1270
 tc_modify_qdisc+0x8ce/0x1550 net/sched/sch_api.c:-1
 rtnetlink_rcv_msg+0x9fd/0xcb0 net/core/rtnetlink.c:5662
 netlink_rcv_skb+0x1e9/0x430 net/netlink/af_netlink.c:2520
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5680
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x86c/0xa30 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x879/0xb80 net/netlink/af_netlink.c:1923
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x5be/0x8f0 net/socket.c:2436
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2490
 __sys_sendmsg net/socket.c:2519 [inline]
 __do_sys_sendmsg net/socket.c:2528 [inline]
 __se_sys_sendmsg net/socket.c:2526 [inline]
 __x64_sys_sendmsg+0x201/0x2d0 net/socket.c:2526
 x64_sys_call+0x4b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd66ec7a159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd66d6d3028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd66ef01fa0 RCX: 00007fd66ec7a159
RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000005
RBP: 00007fd66ed1106b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd66ef02038 R14: 00007fd66ef01fa0 R15: 00007ffea6ffafa8
 </TASK>