watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz.3.16347:22742]
Modules linked in:
irq event stamp: 13908901
hardirqs last  enabled at (13908900): [<ffff80000819dc64>] __local_bh_enable_ip+0x1f8/0x380 kernel/softirq.c:406
hardirqs last disabled at (13908901): [<ffff8000111cdb18>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (234): [<ffff800010cffa40>] spin_unlock_bh include/linux/spinlock.h:408 [inline]
softirqs last  enabled at (234): [<ffff800010cffa40>] tipc_skb_peek_port net/tipc/msg.h:1258 [inline]
softirqs last  enabled at (234): [<ffff800010cffa40>] tipc_sk_rcv+0x278/0x22a8 net/tipc/socket.c:2491
softirqs last disabled at (236): [<ffff800010cffa5c>] spin_trylock_bh include/linux/spinlock.h:423 [inline]
softirqs last disabled at (236): [<ffff800010cffa5c>] tipc_sk_rcv+0x294/0x22a8 net/tipc/socket.c:2496
CPU: 0 PID: 22742 Comm: syz.3.16347 Not tainted 5.15.186-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 : should_resched arch/arm64/include/asm/preempt.h:78 [inline]
pc : __local_bh_enable_ip+0x200/0x380 kernel/softirq.c:408
lr : __local_bh_enable_ip+0x1f8/0x380 kernel/softirq.c:406
sp : ffff80001fe16450
x29: ffff80001fe16460 x28: ffff0000d9ac7700 x27: ffff80001fe16640
x26: 00000000d5415962 x25: dfff800000000000 x24: 0000000000000001
x23: dfff800000000000 x22: 1fffe00019fc6001 x21: ffff800010cffa5c
x20: 0000000000000201 x19: ffff0000cfe30008 x18: 0000000000000402
x17: 0000000000000000 x16: ffff8000082c0bc8 x15: ffff80000f692638
x14: ffff80000f6923fc x13: 0000000000000003 x12: 0000000000ff0100
x11: 0000000000000201 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000002 x1 : ffff80001132b080 x0 : ffff80018cfe0000
Call trace:
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline]
 __local_bh_enable_ip+0x200/0x380 kernel/softirq.c:406
 __raw_spin_trylock_bh include/linux/spinlock_api_smp.h:186 [inline]
 _raw_spin_trylock_bh+0x160/0x230 kernel/locking/spinlock.c:146
 spin_trylock_bh include/linux/spinlock.h:423 [inline]
 tipc_sk_rcv+0x294/0x22a8 net/tipc/socket.c:2496
 tipc_node_xmit+0x1a4/0xdb4 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x248/0x33c net/tipc/node.c:1783
 tipc_sk_rcv+0x1de8/0x22a8 net/tipc/socket.c:2501
 tipc_node_xmit+0x1a4/0xdb4 net/tipc/node.c:1703
 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline]
 tipc_sk_filter_connect net/tipc/socket.c:2255 [inline]
 tipc_sk_filter_rcv+0x120c/0x2798 net/tipc/socket.c:2364
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x5c8/0x22a8 net/tipc/socket.c:2497
 tipc_node_xmit+0x1a4/0xdb4 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0x248/0x33c net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x168/0x224 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1061 [inline]
 __release_sock+0x19c/0x3a0 net/core/sock.c:2725
 release_sock+0x60/0x258 net/core/sock.c:3266
 sock_setsockopt+0x199c/0x1e1c net/core/sock.c:1379
 __sys_setsockopt+0x32c/0x4b0 net/socket.c:2199
 __do_sys_setsockopt net/socket.c:2214 [inline]
 __se_sys_setsockopt net/socket.c:2211 [inline]
 __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211
 __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