watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.0:6684]
Modules linked in:
irq event stamp: 4891
hardirqs last  enabled at (4890): [<ffff80001236acb8>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (4890): [<ffff80001236acb8>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (4891): [<ffff800012368ab0>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (4891): [<ffff800012368ab0>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (188): [<ffff8000105d7d64>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (200): [<ffff8000108a2aa4>] fq_pie_change+0x23c/0xda4 net/sched/sch_fq_pie.c:290
CPU: 0 PID: 6684 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller-00276-ge5282a7d8f6b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : queued_spin_lock_slowpath+0x15c/0xcf8 kernel/locking/qspinlock.c:383
lr : queued_spin_lock_slowpath+0x168/0xcf8 kernel/locking/qspinlock.c:383
sp : ffff80001e4c6a60
x29: ffff80001e4c6b00 x28: 1fffe0001946f51e x27: 1ffff00003c98d58
x26: dfff800000000000 x25: 1fffe0001946f520 x24: ffff80001e4c6a80
x23: ffff80001e4c6ac0 x22: ffff700003c98d50 x21: 0000000000000001
x20: 0000000000000001 x19: ffff0000ca37a8f0 x18: ffff0000d2086406
x17: 0000000000000000 x16: ffff8000089b630c x15: 0000000000000000
x14: 1ffff00002b740ae x13: dfff800000000000 x12: 0000000000000001
x11: 1fffe0001946f51e x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000001 x7 : ffff8000108a2aa4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800012450af0
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000001
Call trace:
 __cmpwait_case_8 arch/arm64/include/asm/cmpxchg.h:249 [inline]
 __cmpwait arch/arm64/include/asm/cmpxchg.h:277 [inline]
 queued_spin_lock_slowpath+0x15c/0xcf8 kernel/locking/qspinlock.c:383
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x320/0x348 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]
 _raw_spin_lock_bh+0x50/0x60 kernel/locking/spinlock.c:178
 fq_pie_change+0x23c/0xda4 net/sched/sch_fq_pie.c:290
 fq_pie_init+0x2b0/0x714 net/sched/sch_fq_pie.c:411
 qdisc_create+0x810/0xe60 net/sched/sch_api.c:1302
 tc_modify_qdisc+0x964/0x17b4
 rtnetlink_rcv_msg+0x744/0xdb8 net/core/rtnetlink.c:6417
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2546
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6435
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 ____sys_sendmsg+0x568/0x81c net/socket.c:2503
 ___sys_sendmsg net/socket.c:2557 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2586
 __do_sys_sendmsg net/socket.c:2595 [inline]
 __se_sys_sendmsg net/socket.c:2593 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2593
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591