watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.3.799:10170] Modules linked in: irq event stamp: 464404179 hardirqs last enabled at (464404178): [] __local_bh_enable_ip+0x9e/0x120 kernel/softirq.c:455 hardirqs last disabled at (464404179): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1061 softirqs last enabled at (506): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (506): [] tipc_skb_peek_port net/tipc/msg.h:1235 [inline] softirqs last enabled at (506): [] tipc_sk_rcv+0x2e1/0x1c90 net/tipc/socket.c:2491 softirqs last disabled at (508): [] spin_trylock_bh include/linux/spinlock.h:414 [inline] softirqs last disabled at (508): [] tipc_sk_rcv+0x318/0x1c90 net/tipc/socket.c:2496 CPU: 0 UID: 0 PID: 10170 Comm: syz.3.799 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:__sanitizer_cov_trace_pc+0x3f/0x70 kernel/kcov.c:217 Code: 01 12 a9 00 01 ff 00 74 1b f6 c4 01 74 07 a9 00 00 ff 00 74 05 e9 d1 20 82 09 8b 82 ec 16 00 00 85 c0 74 f1 8b 82 c8 16 00 00 <83> f8 02 75 e6 48 8b 8a d0 16 00 00 8b 92 cc 16 00 00 48 8b 01 48 RSP: 0018:ffffc90003946ca8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 000000004ab476e3 RCX: ffffffff8b2a3154 RDX: ffff88807b255d00 RSI: ffffffff8b2a3162 RDI: ffff88807b255d00 RBP: ffffc90003946e90 R08: 0000000000000005 R09: 0000000000000000 R10: 000000004ab476e3 R11: 0000000000000000 R12: ffff88804ce4e000 R13: ffff88802dbca440 R14: 000000004ab476e3 R15: dffffc0000000000 FS: 00007f51a62f46c0(0000) GS:ffff88812438e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000005000 CR3: 000000007579a000 CR4: 00000000003526f0 Call Trace: skb_queue_is_last include/linux/skbuff.h:1954 [inline] tipc_skb_peek_port net/tipc/msg.h:1228 [inline] tipc_sk_rcv+0x1e2/0x1c90 net/tipc/socket.c:2491 tipc_node_xmit+0x23e/0xfb0 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x177/0x3c0 net/tipc/node.c:1781 tipc_sk_rcv+0xaab/0x1c90 net/tipc/socket.c:2501 tipc_node_xmit+0x23e/0xfb0 net/tipc/node.c:1701 tipc_sk_push_backlog+0x318/0xa00 net/tipc/socket.c:1312 tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x960/0x3230 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0xea5/0x1c90 net/tipc/socket.c:2497 tipc_node_xmit+0x23e/0xfb0 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x177/0x3c0 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x16f/0x1e0 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x3a2/0x440 net/core/sock.c:3220 release_sock+0x1e5/0x280 net/core/sock.c:3819 sockopt_release_sock net/core/sock.c:1163 [inline] sk_setsockopt+0x46b/0x5c40 net/core/sock.c:1676 do_sock_setsockopt+0x193/0x1d0 net/socket.c:2377 __sys_setsockopt+0x119/0x190 net/socket.c:2406 __do_sys_setsockopt net/socket.c:2412 [inline] __se_sys_setsockopt net/socket.c:2409 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f51a539ce59 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:00007f51a62f4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f51a5616090 RCX: 00007f51a539ce59 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f51a5432d6f R08: 0000000000000009 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f51a5616128 R14: 00007f51a5616090 R15: 00007ffc222fb398