RBP: 00007fe09b011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe09b1e6218 R14: 00007fe09b1e6180 R15: 00007ffefb72ffd8
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 225s! [syz.1.2019:7455]
Modules linked in:
CPU: 1 PID: 7455 Comm: syz.1.2019 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x591/0xc40 kernel/locking/qspinlock.c:511
Code: 0f 85 33 01 00 00 41 c6 45 00 00 41 0f b6 04 17 84 c0 0f 85 46 01 00 00 48 8b 44 24 10 c6 00 01 41 bd 00 80 ff ff eb 07 f3 90 <41> ff c5 74 5b 41 0f b6 04 16 84 c0 75 35 80 3b 00 75 eb 48 89 df
RSP: 0000:ffffc900009d7520 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffff88811234b798 RCX: ffffffff84f43dc2
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88811234b798
RBP: ffffc900009d7610 R08: dffffc0000000000 R09: ffffed10224696f4
R10: ffffed10224696f4 R11: 1ffff110224696f3 R12: 1ffff1103ee20001
R13: 00000000ffffd05c R14: 1ffff110224696f3 R15: 1ffff110224696f3
FS:  00007fe0999f76c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2f0de48f98 CR3: 00000001286a8000 CR4: 00000000003506a0
DR0: 0000000000000002 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]
 _raw_spin_lock_bh+0xd8/0xe0 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x92/0x280 net/core/sock.c:3507
 lock_sock include/net/sock.h:1769 [inline]
 tipc_wait_for_rcvmsg+0x2ec/0x5e0 net/tipc/socket.c:1852
 tipc_recvstream+0x1f7/0xe80 net/tipc/socket.c:2042
 ____sys_recvmsg+0x2a0/0x590 net/socket.c:-1
 ___sys_recvmsg+0x1b2/0x510 net/socket.c:2770
 __sys_recvmsg net/socket.c:2800 [inline]
 __do_sys_recvmsg net/socket.c:2810 [inline]
 __se_sys_recvmsg net/socket.c:2807 [inline]
 __x64_sys_recvmsg+0x1ed/0x2c0 net/socket.c:2807
 x64_sys_call+0x75/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:48
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe09af8eec9
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:00007fe0999f7038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fe09b1e6180 RCX: 00007fe09af8eec9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 000000000000000c
RBP: 00007fe09b011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe09b1e6218 R14: 00007fe09b1e6180 R15: 00007ffefb72ffd8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7454 Comm: syz.1.2019 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline]
RIP: 0010:kvm_wait+0xcc/0x140 arch/x86/kernel/kvm.c:1058
Code: 20 f6 44 24 21 02 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 a6 66 90 0f 00 2d 45 96 13 04 f4 <eb> 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90009206640 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffffc90000df9080 RCX: ffffffff84f43dc2
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffffc90000df9080
RBP: ffffc900092066d0 R08: dffffc0000000000 R09: fffff520001bf211
R10: fffff520001bf211 R11: 1ffff920001bf210 R12: 1ffff1103ee00001
R13: ffff8881f7038cf4 R14: dffffc0000000000 R15: 1ffff92001240cc8
FS:  00007fe09bd3f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000073d000 CR3: 00000001286a8000 CR4: 00000000003506b0
Call Trace:
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x690/0xc40 kernel/locking/qspinlock.c:511
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:162
 __bpf_ringbuf_reserve+0x19c/0x500 kernel/bpf/ringbuf.c:413
 ____bpf_ringbuf_output kernel/bpf/ringbuf.c:539 [inline]
 bpf_ringbuf_output+0x68/0x1e0 kernel/bpf/ringbuf.c:529
 bpf_prog_918f90024333f9ff+0x3a/0x3e
 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline]
 bpf_trace_run2+0xff/0x250 kernel/trace/bpf_trace.c:2322
 __bpf_trace_contention_end+0xb/0x10 include/trace/events/lock.h:122
 trace_contention_end include/trace/events/lock.h:122 [inline]
 __pv_queued_spin_lock_slowpath+0xbff/0xc40 kernel/locking/qspinlock.c:560
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:162
 __bpf_ringbuf_reserve+0x19c/0x500 kernel/bpf/ringbuf.c:413
 ____bpf_ringbuf_output kernel/bpf/ringbuf.c:539 [inline]
 bpf_ringbuf_output+0x68/0x1e0 kernel/bpf/ringbuf.c:529
 bpf_prog_918f90024333f9ff+0x3a/0x3e
 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline]
 bpf_trace_run3+0x113/0x270 kernel/trace/bpf_trace.c:2323
 __bpf_trace_kfree_skb+0x2b/0x40 include/trace/events/skb.h:24
 trace_kfree_skb include/trace/events/skb.h:24 [inline]
 kfree_skb_reason+0x1db/0x230 net/core/skbuff.c:895
 tipc_sk_proto_rcv+0xc18/0x1580 net/tipc/socket.c:-1
 tipc_sk_filter_rcv+0x2a93/0x2c80 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x7d9/0x2cc0 net/tipc/socket.c:2497
 tipc_node_xmit+0x257/0xd00 net/tipc/node.c:1703
 tipc_node_xmit_skb+0xe9/0x130 net/tipc/node.c:1768
 tipc_sk_send_ack+0x38c/0x630 net/tipc/socket.c:1828
 tipc_recvstream+0x801/0xe80 net/tipc/socket.c:2097
 ____sys_recvmsg+0x2a0/0x590 net/socket.c:-1
 ___sys_recvmsg+0x1b2/0x510 net/socket.c:2770
 __sys_recvmsg net/socket.c:2800 [inline]
 __do_sys_recvmsg net/socket.c:2810 [inline]
 __se_sys_recvmsg net/socket.c:2807 [inline]
 __x64_sys_recvmsg+0x1ed/0x2c0 net/socket.c:2807
 x64_sys_call+0x75/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:48
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe09af8eec9
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:00007fe09bd3f038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fe09b1e6090 RCX: 00007fe09af8eec9
RDX: 0000000000001f00 RSI: 0000200000000500 RDI: 000000000000000b
RBP: 00007fe09b011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe09b1e6128 R14: 00007fe09b1e6090 R15: 00007ffefb72ffd8
 </TASK>