watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:10230] Modules linked in: irq event stamp: 2104277 hardirqs last enabled at (2104276): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2104277): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2095570): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2095573): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 10230 Comm: syz-executor.3 Not tainted 6.12.0-next-20241120 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:e1000_xmit_frame+0x2d48/0x4fb0 Code: 00 00 00 48 01 c3 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 5f 1d 00 00 41 8b 47 18 89 03 f5 ea ff ff e8 ee 26 2a fe 4c 8b 34 24 4d 85 f6 74 36 e8 e0 26 RSP: 0018:ffff88806ce08938 EFLAGS: 00000246 RAX: 000000000000001b RBX: ffffc90000663818 RCX: ffffffff8327dac0 RDX: 1ffff1100185a1c3 RSI: ffffffff8327db33 RDI: ffff88800c2d0e2a RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff0c7f282 R10: 0000000000000000 R11: 00000000000c397a R12: 0000000000000018 R13: ffff88800c5c21a0 R14: ffff88800c018000 R15: ffff88800c2d0e00 FS: 00007f9093cb5700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ef22000 CR3: 000000003cec4000 CR4: 0000000000350ef0 Call Trace: dev_hard_start_xmit+0x186/0x740 sch_direct_xmit+0x26c/0x810 __dev_queue_xmit+0x1ad7/0x3d30 ip_finish_output2+0x11ca/0x1bc0 __ip_finish_output.part.0+0x1bb/0x350 ip_output+0x27f/0x850 ip_local_out+0x359/0x4c0 __ip_queue_xmit+0x770/0x1910 __tcp_transmit_skb+0x2884/0x39a0 __tcp_send_ack.part.0+0x3a6/0x650 tcp_send_ack+0x81/0xa0 __tcp_ack_snd_check+0x188/0xc20 tcp_rcv_established+0x8ab/0x2060 tcp_v4_do_rcv+0x5cf/0xa50 tcp_v4_rcv+0x31a0/0x42d0 ip_protocol_deliver_rcu+0xba/0x480 ip_local_deliver_finish+0x2f0/0x500 ip_local_deliver+0x1a3/0x200 ip_sublist_rcv_finish+0x274/0x570 ip_list_rcv_finish.constprop.0+0x3fe/0x580 ip_list_rcv+0x2c5/0x3e0 __netif_receive_skb_list_core+0x695/0x8d0 netif_receive_skb_list_internal+0x6c2/0xc90 napi_gro_receive+0x994/0xbb0 e1000_clean_rx_irq+0x7e1/0x11a0 e1000_clean+0x960/0x2540 __napi_poll+0xb9/0x540 net_rx_action+0xa08/0xe00 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:do_raw_spin_unlock+0x53/0x220 Code: 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b8 01 00 00 81 7b 04 ad 4e ad de 0f 85 52 01 00 00 be 04 00 00 00 48 89 df e8 4d 55 5b 00 <48> 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 RSP: 0018:ffff888015817b78 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff88806ce41500 RCX: ffffffff8130ac23 RDX: ffffed100d9c82a1 RSI: 0000000000000004 RDI: ffff88806ce41500 RBP: ffff88806ce41500 R08: 0000000000000000 R09: ffffed100d9c82a0 R10: ffff88806ce41503 R11: 00000000000007e0 R12: 0000000000000000 R13: 000000000003f04e R14: ffffea0000fc1380 R15: ffff88807ffdcb80 _raw_spin_unlock+0x1e/0x40 free_unref_page+0x622/0xe90 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 security_file_alloc+0x35/0x130 init_file+0x95/0x490 alloc_empty_file+0x94/0x1e0 alloc_file_pseudo+0x139/0x200 sock_alloc_file+0x53/0x1d0 __sys_socket+0x1bc/0x260 __x64_sys_socket+0x73/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f909673fb19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9093cb5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f9096852f60 RCX: 00007f909673fb19 RDX: 0000000000000300 RSI: 0000000000000003 RDI: 0000000000000011 RBP: 00007f9096799f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2ff4cfaf R14: 00007f9093cb5300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 252 Comm: sshd Not tainted 6.12.0-next-20241120 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88801a93f8d0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8486f2bf RDX: ffffed100176c359 RSI: 0000000000000004 RDI: ffff88800bb61ac0 RBP: ffff88800bb61ac0 R08: 0000000000000000 R09: ffffed100176c358 R10: ffff88800bb61ac3 R11: 0000000000000001 R12: 1ffff11003527f1b R13: 0000000000000003 R14: ffffed100176c358 R15: ffff88801a93f908 FS: 00007effc682b900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4670b7f708 CR3: 0000000016192000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1de/0x270 lock_sock_nested+0x5f/0xf0 tcp_recvmsg+0xf8/0x630 inet_recvmsg+0x12b/0x6b0 sock_recvmsg+0x198/0x240 sock_read_iter+0x2bb/0x3b0 vfs_read+0xa28/0xbd0 ksys_read+0x1fe/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7effc6d0de8e Code: c0 e9 b6 fe ff ff 50 48 8d 3d 6e 18 0a 00 e8 b9 e7 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 RSP: 002b:00007ffc21a1ec28 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffc21a22cbf RCX: 00007effc6d0de8e RDX: 0000000000004000 RSI: 00007ffc21a1ec30 RDI: 0000000000000004 RBP: 0000000000000004 R08: 0024dec99206d000 R09: 00007effc73a2000 R10: 00007effc73a2070 R11: 0000000000000246 R12: 000055b70198cec0 R13: 00007ffc21a1ec30 R14: 0000000000000004 R15: 000055b6ca20ea80 Bluetooth: hci6: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci6: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci6: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci6: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci6: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci6: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci6: command tx timeout Bluetooth: hci6: command tx timeout ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 48 01 add %cl,0x1(%rax) 5: c3 retq 6: 48 c1 ea 03 shr $0x3,%rdx a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 11: fc ff df 14: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 18: 84 c0 test %al,%al 1a: 74 08 je 0x24 1c: 3c 03 cmp $0x3,%al 1e: 0f 8e 5f 1d 00 00 jle 0x1d83 24: 41 8b 47 18 mov 0x18(%r15),%eax 28: 89 03 mov %eax,(%rbx) * 2a: e9 f5 ea ff ff jmpq 0xffffeb24 <-- trapping instruction 2f: e8 ee 26 2a fe callq 0xfe2a2722 34: 4c 8b 34 24 mov (%rsp),%r14 38: 4d 85 f6 test %r14,%r14 3b: 74 36 je 0x73 3d: e8 .byte 0xe8 3e: e0 26 loopne 0x66