watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.1.4607:16404] Modules linked in: CPU: 0 PID: 16404 Comm: syz.1.4607 Tainted: G W 5.10.233-syzkaller-00881-gfbe98d68b6b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x5a1/0xc70 kernel/locking/qspinlock.c:508 Code: 85 ba 01 00 00 c6 03 00 48 8b 44 24 28 42 0f b6 04 30 84 c0 0f 85 bf 01 00 00 48 8b 04 24 c6 00 01 bb 00 80 ff ff eb 06 f3 90 c3 74 50 43 0f b6 44 35 00 84 c0 75 32 41 80 3c 24 00 75 e9 4c RSP: 0018:ffffc90000b17740 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 00000000ffffc2c1 RCX: ffffffff8150ca44 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90000b176c0 RBP: ffffc90000b17830 R08: dffffc0000000000 R09: ffffed10246aa3d2 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888123551e88 R13: 1ffff110246aa3d1 R14: dffffc0000000000 R15: ffff88823ff52800 FS: 00007ff0ad1ad6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2e2b15 CR3: 000000011397c000 CR4: 00000000003506b0 DR0: 0000000020000280 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:183 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] lock_sock_nested+0x92/0x300 net/core/sock.c:3117 lock_sock include/net/sock.h:1648 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1540 sock_sendmsg_nosec net/socket.c:652 [inline] __sock_sendmsg net/socket.c:664 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2376 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2430 __sys_sendmsg net/socket.c:2459 [inline] __do_sys_sendmsg net/socket.c:2468 [inline] __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2466 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2466 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7ff0aeb42da9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff0ad1ad038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff0aed5bfa0 RCX: 00007ff0aeb42da9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 000000000000000a RBP: 00007ff0aebc42a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff0aed5bfa0 R15: 00007fff4d687748 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 16405 Comm: syz.1.4607 Tainted: G W 5.10.233-syzkaller-00881-gfbe98d68b6b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:190 Code: 00 00 0f 0b 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 74 11 79 05 48 89 de e8 44 f5 3c 00 5b 5d c3 cc 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d d0 ae 97 7e 65 8b 15 d5 ae 97 7e RSP: 0018:ffffc90000170630 EFLAGS: 00000082 RAX: ffff888118714f00 RBX: 0000000000000002 RCX: ffff888118714f00 RDX: ffff888118714f00 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000170790 R08: ffffffff8100dd51 R09: ffffc900001706c0 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff9200002e0d4 R14: ffffc90000de6758 R15: ffffc900001706c0 FS: 00007ff0ad18c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000001 CR3: 000000011397c000 CR4: 00000000003506a0 DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: get_perf_callchain+0x579/0x810 kernel/events/callchain.c:200 perf_callchain kernel/events/core.c:7203 [inline] perf_prepare_sample+0x35a/0x1af0 kernel/events/core.c:7230 __perf_event_output kernel/events/core.c:7388 [inline] perf_event_output_forward+0xdb/0x1b0 kernel/events/core.c:7408 __perf_event_overflow+0x1c8/0x350 kernel/events/core.c:9064 perf_swevent_hrtimer+0x3fd/0x560 kernel/events/core.c:10467 __run_hrtimer kernel/time/hrtimer.c:1585 [inline] __hrtimer_run_queues+0x3d7/0xa50 kernel/time/hrtimer.c:1649 hrtimer_interrupt+0x39a/0x8b0 kernel/time/hrtimer.c:1711 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xfb/0x3f0 arch/x86/kernel/apic/apic.c:1112 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0x85/0xe0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:rhashtable_lookup include/linux/rhashtable.h:638 [inline] RIP: 0010:tipc_sk_lookup+0x243/0x650 net/tipc/socket.c:2997 Code: 94 d0 fc 45 85 ff 0f 85 fa 01 00 00 e8 56 90 d0 fc 44 89 f0 48 8b 4c 24 20 48 8d 5c c1 40 4c 8b 7c 24 18 48 89 d8 48 83 c8 01 <48> 89 44 24 30 49 be 00 00 00 00 00 fc ff df 48 89 5c 24 38 48 89 RSP: 0018:ffffc90000de6800 EFLAGS: 00000286 RAX: ffff88811ee146a9 RBX: ffff88811ee146a8 RCX: ffff88811ee14000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000de68f0 R08: ffffffff849a2e3c R09: 0000000000000003 R10: fffff520001bcd10 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920001bcd10 R14: 00000000000000cd R15: ffff88811fa6d0de tipc_sk_rcv+0x499/0x1e30 net/tipc/socket.c:2488 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_rcv+0x177d/0x1e30 net/tipc/socket.c:2497 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_sk_push_backlog net/tipc/socket.c:1306 [inline] tipc_sk_filter_connect net/tipc/socket.c:2253 [inline] tipc_sk_filter_rcv+0x1da8/0x3e00 net/tipc/socket.c:2362 tipc_sk_enqueue net/tipc/socket.c:2442 [inline] tipc_sk_rcv+0x8a1/0x1e30 net/tipc/socket.c:2493 tipc_node_xmit+0x34b/0xe30 net/tipc/node.c:1674 tipc_node_xmit_skb net/tipc/node.c:1739 [inline] tipc_node_distr_xmit+0x36a/0x4d0 net/tipc/node.c:1754 tipc_sk_backlog_rcv+0x18b/0x210 net/tipc/socket.c:2410 sk_backlog_rcv include/net/sock.h:1052 [inline] __release_sock+0x148/0x410 net/core/sock.c:2583 release_sock net/core/sock.c:3134 [inline] sock_setsockopt+0x1e3b/0x2e00 net/core/sock.c:1257 __sys_setsockopt+0x441/0x870 net/socket.c:2142 __do_sys_setsockopt net/socket.c:2157 [inline] __se_sys_setsockopt net/socket.c:2154 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2154 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7ff0aeb42da9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff0ad18c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ff0aed5c080 RCX: 00007ff0aeb42da9 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000009 RBP: 00007ff0aebc42a0 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff0aed5c080 R15: 00007fff4d687748