watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:4424] Modules linked in: irq event stamp: 11086029 hardirqs last enabled at (11086028): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (11086029): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (11076486): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (11076489): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 4424 Comm: syz-executor.1 Not tainted 6.5.0-rc3-next-20230728 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_access_ok+0x2a/0x1d0 Code: 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 49 89 d4 48 89 fa 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 4b 01 00 00 8b 0b 85 c9 74 65 48 b8 00 00 RSP: 0018:ffff88806cf09708 EFLAGS: 00000292 RAX: 0000000000000000 RBX: ffff88806cf097b0 RCX: ffffffff860f10f2 RDX: 1ffff1100d9e12f6 RSI: ffff88806cf098e0 RDI: ffff88806cf097b0 RBP: ffff88806cf098e0 R08: ffffffff860f10f6 R09: ffff88806cf097f0 R10: 0000000000038001 R11: 0000000000010eb9 R12: 0000000000000008 R13: ffff88806cf097f8 R14: ffff88806cf098e8 R15: ffff88806cf097b0 FS: 00007fcb28445700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005648dfb87190 CR3: 000000000e304000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0xa58/0x2490 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b2/0xc90 kmem_cache_alloc_node+0x23d/0x3b0 __alloc_skb+0x28c/0x330 skb_copy+0x13d/0x3f0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb11/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0xb3/0x1a0 Code: 0f 82 f8 00 00 00 48 c7 c0 00 00 00 80 48 2b 05 cb c1 ac 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 a9 c1 ac 03 48 8b 48 08 <48> 89 c2 f6 c1 01 0f 85 ba 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 RSP: 0018:ffff888045467568 EFLAGS: 00000286 RAX: ffffea000040ab00 RBX: ffff8880102ac380 RCX: ffff88800844d8c0 RDX: ffff8880902ac380 RSI: ffff88800ee51f40 RDI: ffff8880087b43c0 RBP: 0000000000000000 R08: ffff8880102ac380 R09: 0000000000000000 R10: ffffea00003b9440 R11: 0000000000800026 R12: dffffc0000000000 R13: ffff8880454675a8 R14: 0000000000000000 R15: ffff88800ee51f40 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x17b/0x390 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x23d/0x3b0 kmalloc_reserve+0x169/0x270 __alloc_skb+0x129/0x330 alloc_uevent_skb+0x7b/0x210 kobject_uevent_env+0xa8a/0xf80 device_add+0x1015/0x18a0 device_create_groups_vargs+0x207/0x280 device_create+0xe0/0x120 bdi_register_va.part.0+0x9c/0x680 bdi_register_va+0x6b/0x90 super_setup_bdi_name+0xe5/0x230 v9fs_mount+0x2d8/0xbd0 legacy_get_tree+0x109/0x220 vfs_get_tree+0x92/0x360 path_mount+0x133c/0x1e50 __x64_sys_mount+0x286/0x310 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fcb2aecfb19 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:00007fcb28445188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fcb2afe2f60 RCX: 00007fcb2aecfb19 RDX: 0000000020000080 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007fcb2af29f6d R08: 00000000200001c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef7a58aff R14: 00007fcb28445300 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-rc3-next-20230728 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xb20 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 5c 09 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 5a 21 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff845bef2b RDX: fffffbfff0b4de91 RSI: 0000000000000004 RDI: ffffffff85a6f480 RBP: ffffffff85a6f480 R08: 0000000000000000 R09: fffffbfff0b4de90 R10: ffffffff85a6f483 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4de90 R14: 0000000000000001 R15: 1ffff1100d9c1348 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000674000 CR3: 000000001c9b2000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6e7/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 63 e9 28 00 fb f4 e9 fb 7a 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85407e10 EFLAGS: 00000206 RAX: 00000000001e8ff9 RBX: 0000000000000000 RCX: ffffffff8459866e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8128e645 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6a00 R10: ffff88806ce35003 R11: 0000000000000001 R12: ffffffff85d4a7d0 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+0x179/0x17b ---------------- Code disassembly (best guess): 0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 7: fc ff df a: 41 56 push %r14 c: 41 55 push %r13 e: 41 54 push %r12 10: 49 89 d4 mov %rdx,%r12 13: 48 89 fa mov %rdi,%rdx 16: 55 push %rbp 17: 48 c1 ea 03 shr $0x3,%rdx 1b: 48 89 f5 mov %rsi,%rbp 1e: 53 push %rbx 1f: 48 89 fb mov %rdi,%rbx 22: 48 83 ec 08 sub $0x8,%rsp 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 74 08 je 0x36 2e: 3c 03 cmp $0x3,%al 30: 0f 8e 4b 01 00 00 jle 0x181 36: 8b 0b mov (%rbx),%ecx 38: 85 c9 test %ecx,%ecx 3a: 74 65 je 0xa1 3c: 48 rex.W 3d: b8 .byte 0xb8