watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.6:7146] Modules linked in: irq event stamp: 4566259 hardirqs last enabled at (4566258): [] asm_sysvec_irq_work+0x1a/0x20 hardirqs last disabled at (4566259): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (1282478): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (1282481): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 7146 Comm: syz-executor.6 Not tainted 6.5.0-rc6-next-20230818 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x70 Code: 4d fc b5 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 8d 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 9c 14 00 00 <85> c0 74 2b 8b 82 78 14 00 00 83 f8 02 75 20 48 8b 8a 80 14 00 00 RSP: 0018:ffff88806cf09678 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffff88806cf09740 RCX: 0000000000000100 RDX: ffff88800f2f8000 RSI: ffffffff8113b40c RDI: ffff88806cf09740 RBP: ffff8880421e7738 R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000008 R13: ffff8880421e7740 R14: ffff8880421e7738 R15: ffffffff86145cf4 FS: 00007f276a153700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f793953f6f4 CR3: 0000000035d5e000 CR4: 0000000000350ee0 Call Trace: stack_access_ok+0x1c/0x260 unwind_next_frame+0xd01/0x25d0 arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x199/0x3b0 __alloc_skb+0x28c/0x330 ndisc_alloc_skb+0x134/0x330 ndisc_send_rs+0x22b/0x550 addrconf_rs_timer+0x2f0/0x7d0 call_timer_fn+0x17d/0x4e0 expire_timers+0x272/0x460 run_timer_softirq+0x2f5/0x880 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_irq_work+0xa5/0xb0 asm_sysvec_irq_work+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 Code: c0 e9 e9 4b 0f 03 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 4d fc b5 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 8d 03 00 a9 RSP: 0018:ffff8880421e72f0 EFLAGS: 00000287 RAX: 0000000080000001 RBX: ffff8880421e7378 RCX: ffffffff8113b83d RDX: ffff88800f2f8000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000006 R09: ffffffff813c10ff R10: ffffffff84800000 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff813c10ff R14: ffff8880421e73b9 R15: ffff8880421e7418 unwind_next_frame+0x1ef/0x25d0 arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node+0x60/0x160 kvmalloc_node+0xaa/0x200 nf_hook_entries_grow+0x699/0x860 __nf_register_net_hook+0x141/0x850 nf_register_net_hook+0x11c/0x170 nf_register_net_hooks+0x5d/0xd0 ops_init+0xbb/0x6b0 setup_net+0x3d9/0x990 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2b78/0x7320 kernel_clone+0xeb/0x810 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f276cbddb19 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:00007f276a153188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f276ccf0f60 RCX: 00007f276cbddb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f276cc37f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb3198d3f R14: 00007f276a153300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc6-next-20230818 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire+0xe/0x4c0 Code: 24 e9 2d ff ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df <41> 57 41 89 f7 41 56 49 89 fe 41 55 41 89 d5 41 54 41 89 cc 55 44 RSP: 0018:ffff88806ce09dc0 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8562f7c8 RBP: ffff88806ce2c290 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88806ce2c290 R13: ffff88806ce2c280 R14: ffffffff85407d68 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00068e000 CR3: 00000000157a8000 CR4: 0000000000350ef0 Call Trace: ktime_get+0x80/0x1f0 tick_sched_timer+0x25/0x110 __hrtimer_run_queues+0x17f/0xb60 hrtimer_interrupt+0x2ef/0x750 __sysvec_apic_timer_interrupt+0xb3/0x330 sysvec_apic_timer_interrupt+0x69/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 29 2e 28 00 0f 1f 44 00 00 fb f4 e9 9c 7d 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85407e10 EFLAGS: 00000206 RAX: 00000000000feda9 RBX: 0000000000000000 RCX: ffffffff845a4fbe RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81299875 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6a08 R10: ffff88806ce35043 R11: 0000000000000001 R12: ffffffff85d51ad0 R13: 1ffffffff0a80fc7 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x305/0x3c0 cpu_startup_entry+0x18/0x20 rest_init+0x168/0x290 arch_call_rest_init+0x13/0x40 start_kernel+0x3c4/0x4e0 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcf/0xe0 secondary_startup_64_no_verify+0x178/0x17b Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci0: command 0x0406 tx timeout ---------------- Code disassembly (best guess): 0: 4d fc rex.WRB cld 2: b5 7e mov $0x7e,%ch 4: 89 c1 mov %eax,%ecx 6: 48 8b 34 24 mov (%rsp),%rsi a: 81 e1 00 01 00 00 and $0x100,%ecx 10: 65 48 8b 14 25 80 8d mov %gs:0x38d80,%rdx 17: 03 00 19: a9 00 01 ff 00 test $0xff0100,%eax 1e: 74 0e je 0x2e 20: 85 c9 test %ecx,%ecx 22: 74 35 je 0x59 24: 8b 82 9c 14 00 00 mov 0x149c(%rdx),%eax * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 2b je 0x59 2e: 8b 82 78 14 00 00 mov 0x1478(%rdx),%eax 34: 83 f8 02 cmp $0x2,%eax 37: 75 20 jne 0x59 39: 48 8b 8a 80 14 00 00 mov 0x1480(%rdx),%rcx