watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:14195] Modules linked in: irq event stamp: 4362411 hardirqs last enabled at (4362410): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4362411): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4317094): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (4317097): [] irq_exit_rcu+0x11f/0x190 CPU: 1 PID: 14195 Comm: syz-executor.7 Not tainted 6.2.0-rc5-next-20230124 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x967/0x2130 Code: 44 24 28 48 8d 70 f8 48 89 74 24 20 e8 d2 f4 ff ff 4d 8d 5e 40 84 c0 0f 84 43 fa ff ff 48 8b 74 24 20 48 89 f7 e8 69 ef ff ff <48> 89 e9 48 8b 74 24 20 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 RSP: 0018:ffff88806cf096b8 EFLAGS: 00000202 RAX: ffffffff817d38e9 RBX: 0000000000000001 RCX: 0000000000000001 RDX: ffff88801c5bf701 RSI: ffff88801c5bf778 RDI: ffff88801c5bf778 RBP: ffff88806cf09790 R08: ffffffff860fe2aa R09: ffffffff860fe2ae R10: ffff88806cf09ff8 R11: ffff88806cf09778 R12: ffff88806cf09779 R13: ffff88806cf09798 R14: ffff88806cf09738 R15: ffffffff860fe2af FS: 00007f1f16584700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200fc000 CR3: 0000000046c56000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller+0x53/0xb0 __alloc_skb+0xe9/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x567/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:rcu_preempt_deferred_qs_irqrestore+0x142/0xf00 Code: 84 f6 75 3c 41 f7 c4 00 02 00 00 75 13 48 83 c4 50 5b 5d 41 5c 41 5d 41 5e 41 5f e9 1c cb 10 03 e8 e3 0a 1c 00 fb 48 83 c4 50 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 03 cb 10 03 e8 0a 45 ff ff eb 8e RSP: 0018:ffff88801c5bf348 EFLAGS: 00000286 RAX: 000000000020c3b9 RBX: ffff888019c85040 RCX: ffffffff812b8caf RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88806cf3a140 R08: 0000000000000001 R09: ffffffff8765e99f R10: fffffbfff0ecbd33 R11: 0000000000000001 R12: 0000000000000246 R13: ffff88806cf3a151 R14: 0000000000000100 R15: ffff888019c85438 __rcu_read_unlock+0x289/0x520 __is_insn_slot_addr+0x12f/0x290 kernel_text_address+0x48/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x172/0x300 alloc_buffer_head+0x24/0x150 alloc_page_buffers+0x2a2/0x690 create_empty_buffers+0x3a/0xa60 create_page_buffers+0x286/0x300 __block_write_begin_int+0x178/0x13d0 ext4_da_write_begin+0x357/0x9c0 generic_perform_write+0x25a/0x580 ext4_buffered_write_iter+0x164/0x460 ext4_file_write_iter+0x3ff/0x1930 vfs_write+0x9c7/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1f1900eb19 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:00007f1f16584188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1f19121f60 RCX: 00007f1f1900eb19 RDX: 00000000000292e9 RSI: 0000000020000080 RDI: 0000000000000008 RBP: 00007f1f19068f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe9639070f R14: 00007f1f16584300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc5-next-20230124 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc90 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 e6 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ce 1f 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:ffff88806ce09a30 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff84452cbb RDX: fffffbfff0b491fd RSI: 0000000000000004 RDI: ffffffff85a48fe0 RBP: ffffffff85a48fe0 R08: 0000000000000000 R09: ffffffff85a48fe3 R10: fffffbfff0b491fc R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b491fc R14: 0000000000000001 R15: 1ffff1100d9c1347 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555c0ec58 CR3: 0000000006998000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x567/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 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 93 59 3f 00 fb f4 e9 af 23 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85407e38 EFLAGS: 00000206 RAX: 00000000007b518d RBX: 0000000000000000 RCX: ffffffff84431652 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8542a800 R08: 0000000000000001 R09: ffff88806ce34f83 R10: ffffed100d9c69f0 R11: 0000000000000001 R12: fffffbfff0a85500 R13: ffffffff85d11e10 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x30d/0x3e0 cpu_startup_entry+0x18/0x20 rest_init+0x164/0x290 arch_call_rest_init+0x13/0x2c start_kernel+0x4a2/0x4c7 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: 44 24 28 rex.R and $0x28,%al 3: 48 8d 70 f8 lea -0x8(%rax),%rsi 7: 48 89 74 24 20 mov %rsi,0x20(%rsp) c: e8 d2 f4 ff ff callq 0xfffff4e3 11: 4d 8d 5e 40 lea 0x40(%r14),%r11 15: 84 c0 test %al,%al 17: 0f 84 43 fa ff ff je 0xfffffa60 1d: 48 8b 74 24 20 mov 0x20(%rsp),%rsi 22: 48 89 f7 mov %rsi,%rdi 25: e8 69 ef ff ff callq 0xffffef93 * 2a: 48 89 e9 mov %rbp,%rcx <-- trapping instruction 2d: 48 8b 74 24 20 mov 0x20(%rsp),%rsi 32: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 39: fc ff df 3c: 48 c1 e9 03 shr $0x3,%rcx