RBP: 00007f7e609a7ba0 R08: 000000000001127c R09: 00007fff58d1066f
R10: 00007f7e609a7ac0 R11: 0000000000000246 R12: 00000000000496ce
R13: 00007f7e609a5fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.8.1505:5589]
Modules linked in:
CPU: 0 PID: 5589 Comm: syz.8.1505 Not tainted 6.1.124-syzkaller-00114-g2055772eada0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline]
RIP: 0010:smp_call_function_single+0x27b/0x510 kernel/smp.c:787
Code: 0f 85 18 02 00 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 c7 ad 09 00 41 83 e5 01 75 0a e8 0c aa 09 00 e9 eb 00 00 00 f3 90 <42> 0f b6 04 23 84 c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd 00 00
RSP: 0018:ffffc90002497a80 EFLAGS: 00000293
RAX: ffffffff816bead7 RBX: 1ffff92000492f59 RCX: ffff888119559440
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002497b78 R08: ffffffff816beaa9 R09: fffff52000492f29
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffc90002497ac8 R15: 0000000000000000
FS:  00005555809ea500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd92c22588 CR3: 0000000123b10000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 rcu_barrier+0x31b/0x5f0 kernel/rcu/tree.c:4126
 netdev_run_todo+0x14b/0xd00 net/core/dev.c:10404
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:147
 tun_detach drivers/net/tun.c:704 [inline]
 tun_chr_close+0xc4/0x140 drivers/net/tun.c:3492
 __fput+0x1e5/0x870 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x24d/0x2e0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7e6078cda9
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:00007fff58d10368 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f7e609a7ba0 RCX: 00007f7e6078cda9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f7e609a7ba0 R08: 000000000001127c R09: 00007fff58d1066f
R10: 00007f7e609a7ac0 R11: 0000000000000246 R12: 00000000000496ce
R13: 00007f7e609a5fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5600 Comm: syz.0.1508 Not tainted 6.1.124-syzkaller-00114-g2055772eada0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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+0x117/0x180 arch/x86/kernel/kvm.c:1058
Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 53 41 0f b6 45 00 44 38 f0 0f 85 63 ff ff ff 66 90 0f 00 2d da de 50 04 f4 <e9> 54 ff ff ff fa 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b
RSP: 0018:ffffc90000a672c0 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff9200014ce5c RCX: ffffffff8522775c
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88811064e140
RBP: ffffc90000a67370 R08: dffffc0000000000 R09: ffffed10220c9c29
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88811064e140 R14: 0000000000000003 R15: 1ffff9200014ce60
FS:  00007f67308556c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30b1dff8 CR3: 0000000130dc4000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <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+0x6de/0xda0 kernel/locking/qspinlock.c:511
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 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+0x1a0/0x210 kernel/locking/spinlock.c:162
 queue_stack_map_push_elem+0x17a/0x570 kernel/bpf/queue_stack_maps.c:214
 bpf_prog_216c997a1f42e404+0x37/0x3b
 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:2282 [inline]
 bpf_trace_run2+0x133/0x290 kernel/trace/bpf_trace.c:2321
 __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+0xd59/0xda0 kernel/locking/qspinlock.c:560
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 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+0x1a0/0x210 kernel/locking/spinlock.c:162
 queue_stack_map_push_elem+0x17a/0x570 kernel/bpf/queue_stack_maps.c:214
 bpf_prog_216c997a1f42e404+0x37/0x3b
 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_prog_run_pin_on_cpu include/linux/filter.h:627 [inline]
 bpf_flow_dissect+0x12b/0x3e0 net/core/flow_dissector.c:913
 bpf_prog_test_run_flow_dissector+0x465/0x7e0 net/bpf/test_run.c:1487
 bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3670
 __sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5025
 __do_sys_bpf kernel/bpf/syscall.c:5111 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5109 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5109
 x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f672f98cda9
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:00007f6730855038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f672fba5fa0 RCX: 00007f672f98cda9
RDX: 0000000000000050 RSI: 0000000020000000 RDI: 000000000000000a
RBP: 00007f672fa0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f672fba5fa0 R15: 00007ffd2e535ff8
 </TASK>