watchdog: BUG: soft lockup - CPU#0 stuck for 117s! [syz.0.17:5980] Modules linked in: irq event stamp: 9493017 hardirqs last enabled at (9493016): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (9493017): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (8900708): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (8900708): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (8900708): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (8900711): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (8900711): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (8900711): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 5980 Comm: syz.0.17 Not tainted 6.15.0-syzkaller-gf66b4aaff254 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5875 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 3b 8a fe 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90000006798 EFLAGS: 00000206 RAX: 6ad35ce3ad2cee00 RBX: 0000000000000000 RCX: 6ad35ce3ad2cee00 RDX: 0000000000000000 RSI: ffffffff8db69c35 RDI: ffffffff8be28800 RBP: ffffffff81729de5 R08: 0000000000000000 R09: ffffffff81729de5 R10: ffffc900000065e0 R11: ffffffff81acf670 R12: 0000000000000002 R13: ffffffff8e13f060 R14: 0000000000000000 R15: 0000000000000246 FS: 00007fbdafdf66c0(0000) GS:ffff888125c54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f751dd02050 CR3: 000000007f7e8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4745 tcp_rcv_established+0xea8/0x1de0 net/ipv4/tcp_input.c:6217 tcp_v4_do_rcv+0xa23/0xce0 net/ipv4/tcp_ipv4.c:1925 tcp_v4_rcv+0x2676/0x2f00 net/ipv4/tcp_ipv4.c:2363 ip_protocol_deliver_rcu+0x221/0x440 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2fb/0x580 net/ipv4/ip_input.c:233 NF_HOOK+0x309/0x3a0 include/linux/netfilter.h:317 dst_input include/net/dst.h:469 [inline] ip_sublist_rcv_finish+0x21d/0x2a0 net/ipv4/ip_input.c:578 ip_list_rcv_finish net/ipv4/ip_input.c:627 [inline] ip_sublist_rcv+0x6e7/0x9b0 net/ipv4/ip_input.c:635 ip_list_rcv+0x3e2/0x430 net/ipv4/ip_input.c:669 __netif_receive_skb_list_ptype net/core/dev.c:6020 [inline] __netif_receive_skb_list_core+0x7d2/0x800 net/core/dev.c:6067 __netif_receive_skb_list net/core/dev.c:6119 [inline] netif_receive_skb_list_internal+0x975/0xcc0 net/core/dev.c:6210 gro_normal_list include/net/gro.h:532 [inline] napi_complete_done+0x2f2/0x7c0 net/core/dev.c:6580 virtqueue_napi_complete drivers/net/virtio_net.c:737 [inline] virtnet_poll+0x23bd/0x2d90 drivers/net/virtio_net.c:3053 __napi_poll+0xc4/0x480 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x707/0xe30 net/core/dev.c:7605 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__schedule+0x112/0x4d00 kernel/sched/core.c:6678 Code: be 08 00 00 00 e8 7e 5c bd f6 48 0f a3 1d 86 2b 3a 04 73 16 e8 cf 4f 40 f6 84 c0 75 0d 80 3d 18 17 24 04 00 0f 84 44 18 00 00 59 4b ff ff 48 63 d8 83 fb 08 0f 83 9d 18 00 00 48 8d 1c dd 60 RSP: 0018:ffffc90005a17420 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 6ad35ce3ad2cee00 RDX: 0000000000000000 RSI: ffffffff8be287e0 RDI: ffffffff8be287a0 RBP: ffffc90005a17630 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: 0000000000000000 R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92000b42ec8 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5875 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 3b 8a fe 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90005a177b0 EFLAGS: 00000206 RAX: 6ad35ce3ad2cee00 RBX: 0000000000000000 RCX: 6ad35ce3ad2cee00 RDX: 0000000000000001 RSI: ffffffff8db69c35 RDI: ffffffff8be28800 RBP: ffffffff81cf4a16 R08: 0000000000000000 R09: ffffffff81cf4a16 R10: ffffc90005a17620 R11: ffffffffa0205154 R12: 0000000000000002 R13: ffffffff8e13f060 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] is_bpf_text_address+0x47/0x2b0 kernel/bpf/core.c:772 kernel_text_address+0xa5/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4328 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] lsm_blob_alloc security/security.c:684 [inline] lsm_sock_alloc security/security.c:4839 [inline] security_sk_alloc+0x52/0x390 security/security.c:4855 sk_prot_alloc+0x101/0x220 net/core/sock.c:2250 sk_alloc+0x3a/0x370 net/core/sock.c:2303 inet_create+0x76b/0x1000 net/ipv4/af_inet.c:326 __sock_create+0x4b3/0x9f0 net/socket.c:1541 sock_create net/socket.c:1599 [inline] __sys_socket_create net/socket.c:1636 [inline] __sys_socket+0xd7/0x1b0 net/socket.c:1683 __do_sys_socket net/socket.c:1697 [inline] __se_sys_socket net/socket.c:1695 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1695 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbdb1f8e929 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:00007fbdafdf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fbdb21b6160 RCX: 00007fbdb1f8e929 RDX: 0000000000000000 RSI: 0200000000000001 RDI: 0000000000000002 RBP: 00007fbdb2010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbdb21b6160 R15: 00007ffd47e09648 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5855 Comm: kworker/u9:9 Not tainted 6.15.0-syzkaller-gf66b4aaff254 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: hci2 hci_cmd_timeout RIP: 0010:sprintf+0xe2/0x120 lib/vsprintf.c:3040 Code: 89 44 24 68 48 8d 44 24 10 48 89 44 24 70 be ff ff ff 7f 4c 89 f7 48 89 da 4c 89 f9 e8 77 ba ff ff 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 43 c7 44 2c 08 00 00 00 00 65 48 8b 0d 35 RSP: 0000:ffffc900045ef020 EFLAGS: 00000286 RAX: 000000000000000e RBX: ffffffff8b8b8120 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000007fffffff RDI: 0000000000000000 RBP: ffffc900045ef110 R08: ffffc900045ef26d R09: 1ffff920008bde4d R10: dffffc0000000000 R11: fffff520008bde4e R12: 1ffff920008bde0c R13: dffffc0000000000 R14: ffffc900045ef260 R15: ffffc900045ef080 FS: 0000000000000000(0000) GS:ffff888125d54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562a66e6f5a0 CR3: 000000004b2d0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: print_time kernel/printk/printk.c:1381 [inline] info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407 record_print_text+0x154/0x430 kernel/printk/printk.c:1456 printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 bt_err+0x10b/0x160 net/bluetooth/lib.c:296 hci_cmd_timeout+0xff/0x1e0 net/bluetooth/hci_core.c:1457 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245