watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz.1.16:4923]
Modules linked in:
irq event stamp: 263
hardirqs last  enabled at (262): [<ffff80001127f2ac>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (262): [<ffff80001127f2ac>] _raw_spin_unlock_irqrestore+0xa8/0x14c kernel/locking/spinlock.c:194
hardirqs last disabled at (263): [<ffff8000111a3e04>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (198): [<ffff80000f6ed3c4>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (254): [<ffff80000f9bd524>] spin_lock_bh include/linux/spinlock.h:368 [inline]
softirqs last disabled at (254): [<ffff80000f9bd524>] taprio_change+0x3018/0x415c net/sched/sch_taprio.c:1556
CPU: 0 PID: 4923 Comm: syz.1.16 Not tainted 5.15.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
pc : _raw_spin_unlock_irqrestore+0xb8/0x14c kernel/locking/spinlock.c:194
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
lr : _raw_spin_unlock_irqrestore+0xa8/0x14c kernel/locking/spinlock.c:194
sp : ffff80001f746bc0
x29: ffff80001f746bd0 x28: ffff0000c20feb38 x27: 0000000000000000
x26: ffff0000d67c9910 x25: ffff0000c20fead0 x24: dfff800000000000
x23: 0000000000000000 x22: dfff800000000000 x21: ffff80000f9bd9a4
x20: ffff0000c20feae8 x19: 0000000000000000 x18: 0000000000000203
x17: ffff800016cdf000 x16: ffff8000082bf2b8 x15: ffff8000167bf4c0
x14: ffff0000d5e95bc0 x13: 1ffff0000282a06b x12: 0000000000ff0100
x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000080
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008044e7c
x2 : 0000000000000002 x1 : ffff8000112fb080 x0 : ffff80018d058000
Call trace:
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irqrestore+0xb8/0x14c kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 taprio_change+0x3498/0x415c net/sched/sch_taprio.c:1620
 taprio_init+0x46c/0x514 net/sched/sch_taprio.c:1752
 qdisc_create+0x6e4/0xf24 net/sched/sch_api.c:1269
 tc_modify_qdisc+0x8bc/0x1308 net/sched/sch_api.c:-1
 rtnetlink_rcv_msg+0x9d4/0xd04 net/core/rtnetlink.c:5650
 netlink_rcv_skb+0x208/0x3c4 net/netlink/af_netlink.c:2489
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5668
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x60c/0x89c net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x6e8/0x9cc net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x61c/0x920 net/socket.c:2436
 ___sys_sendmsg+0x1d0/0x240 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]
 __arm64_sys_sendmsg+0x1a8/0x254 net/socket.c:2526
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584