RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000032
R10: 0000000000021000 R11: 0000000000020000 R12: 00007ffc02a5f970
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
watchdog: BUG: soft lockup - CPU#1 stuck for 245s! [syz.6.6685:21410]
Modules linked in:
CPU: 1 PID: 21410 Comm: syz.6.6685 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8c3/0x9f0 kernel/smp.c:969
Code: 84 c0 0f 85 9d 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 90 37 0a 00 83 e3 01 48 8b 5c 24 10 75 07 e8 d1 33 0a 00 eb 42 f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 10 41 f7
RSP: 0000:ffffc90000fe7580 EFLAGS: 00000293
RAX: ffffffff815e8b05 RBX: ffff8881f7138e80 RCX: ffff8881153a3b40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000fe7690 R08: dffffc0000000000 R09: ffffed10268c16f6
R10: ffffed10268c16f6 R11: 1ffff110268c16f5 R12: 1ffff1103ee271d0
R13: 1ffff1103ee07af9 R14: 0000000000000000 R15: ffff8881f703d7c8
FS: 000055557d05a500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3aa98d680 CR3: 0000000160cb0000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1135
native_flush_tlb_multi+0x144/0x210 arch/x86/mm/tlb.c:-1
__flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:946 [inline]
flush_tlb_mm_range+0x32f/0x490 arch/x86/mm/tlb.c:1034
flush_tlb_page arch/x86/include/asm/tlbflush.h:240 [inline]
ptep_clear_flush+0x111/0x150 mm/pgtable-generic.c:98
wp_page_copy+0xd72/0x18f0 mm/memory.c:3294
do_wp_page+0x731/0xc90 mm/memory.c:-1
handle_pte_fault+0x73c/0x2680 mm/memory.c:4932
__handle_mm_fault mm/memory.c:-1 [inline]
do_handle_mm_fault+0x1a6d/0x1d50 mm/memory.c:5333
do_user_addr_fault+0x554/0x1180 arch/x86/mm/fault.c:1325
handle_page_fault arch/x86/mm/fault.c:1509 [inline]
exc_page_fault+0x51/0xb0 arch/x86/mm/fault.c:1565
asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7fd3a9bb5fbe
Code: 31 ff 4d 01 f2 41 0f 92 c7 72 a6 48 8b 44 24 08 48 8d 84 06 00 08 00 00 4c 01 f0 48 21 d8 49 39 c2 72 8e 31 c0 be 01 00 00 00 0f b1 35 ba 76 dd 00 0f 85 26 0a 00 00 c1 e1 02 48 8b 05 ca 76
RSP: 002b:00007ffc02a5f820 EFLAGS: 00010246
RAX: 0000000000000000 RBX: fffffffffffff000 RCX: 0000000000000006
RDX: 000000000000003f RSI: 0000000000000001 RDI: 00007ffc02a5f968
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000032
R10: 0000000000021000 R11: 0000000000020000 R12: 00007ffc02a5f970
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 21411 Comm: syz.6.6685 Tainted: G W 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:912
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 e5 91 d6 03 f4 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc900009e7400 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff8881002fb06c RCX: ffffffff814f4259
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8881002fb06c
RBP: ffffc900009e7490 R08: dffffc0000000000 R09: ffffed102005f60e
R10: ffffed102005f60e R11: 1ffff1102005f60d R12: 1ffff1103ee00001
R13: ffff8881f7038ad4 R14: dffffc0000000000 R15: 1ffff9200013ce80
FS: 00007fd3a86676c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 0000000160cb0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x60f/0x9c0 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock include/linux/spinlock.h:187 [inline]
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:129 [inline]
_raw_spin_lock_irq+0xd9/0xe0 kernel/locking/spinlock.c:170
get_wchan kernel/sched/core.c:2021 [inline]
perf_trace_sched_blocked_reason+0x243/0x4a0 include/trace/events/sched.h:490
trace_sched_blocked_reason include/trace/events/sched.h:490 [inline]
try_to_wake_up+0xea1/0x1160 kernel/sched/core.c:4190
wake_up_process+0x10/0x20 kernel/sched/core.c:4348
swake_up_locked kernel/sched/swait.c:30 [inline]
swake_up_one+0x6a/0x150 kernel/sched/swait.c:53
__rcu_report_exp_rnp+0x1aa/0x1b0 kernel/rcu/tree_exp.h:201
rcu_report_exp_rnp kernel/rcu/tree_exp.h:223 [inline]
rcu_preempt_deferred_qs_irqrestore+0x6f3/0x9d0 kernel/rcu/tree_plugin.h:562
rcu_read_unlock_special+0xab/0x460 kernel/rcu/tree_plugin.h:673
__rcu_read_unlock+0x5e/0xa0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:780 [inline]
security_compute_sid+0x1315/0x1440 security/selinux/ss/services.c:1916
security_transition_sid+0x7d/0x90 security/selinux/ss/services.c:1940
socket_sockcreate_sid security/selinux/hooks.c:4677 [inline]
selinux_socket_post_create+0x328/0x450 security/selinux/hooks.c:4730
security_socket_post_create+0x82/0xb0 security/security.c:2221
__sock_create+0x43b/0x7a0 net/socket.c:1507
sock_create net/socket.c:1542 [inline]
__sys_socketpair+0x1a1/0x590 net/socket.c:1642
__do_sys_socketpair net/socket.c:1695 [inline]
__se_sys_socketpair net/socket.c:1692 [inline]
__x64_sys_socketpair+0x9b/0xb0 net/socket.c:1692
x64_sys_call+0x36/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:54
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd3a9bfeec9
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:00007fd3a8667038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007fd3a9e55fa0 RCX: 00007fd3a9bfeec9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001
RBP: 00007fd3a9c81f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3a9e56038 R14: 00007fd3a9e55fa0 R15: 00007ffc02a5f878