watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.4:8821] Modules linked in: irq event stamp: 4928457 hardirqs last enabled at (4928456): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4928457): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (4553954): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (4553957): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 8821 Comm: syz-executor.4 Not tainted 6.5.0-rc6-next-20230816 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xd24/0x25d0 Code: 89 f6 e8 8f f0 ff ff 31 ff 89 c6 88 44 24 28 e8 52 d4 39 00 0f b6 44 24 28 4c 8d 43 40 84 c0 0f 84 64 f6 ff ff e8 fc d8 39 00 <4c> 89 f7 e8 24 e7 ff ff 48 8b 0c 24 48 ba 00 00 00 00 00 fc ff df RSP: 0018:ffff88806ce096e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88806ce09768 RCX: 0000000000000100 RDX: ffff888042a88000 RSI: ffffffff8113c384 RDI: 0000000000000001 RBP: ffffffff864e4bc8 R08: ffff88806ce097a8 R09: 0000000000000000 R10: 0000000000000001 R11: 1ffff1100d9c69d4 R12: 0000000000000002 R13: ffff8880438a7cd8 R14: ffff8880438a7cd0 R15: ffffffff864e4bcc FS: 00007fe5d7cb9700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2de25000 CR3: 0000000043052000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b2/0xc90 kmem_cache_alloc_node+0x23d/0x3b0 kmalloc_reserve+0x169/0x270 __alloc_skb+0x129/0x330 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:__sanitizer_cov_trace_pc+0x47/0x70 Code: 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 <8b> 92 7c 14 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 01 48 RSP: 0018:ffff8880438a7d88 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000006 RCX: ffffc900061f4000 RDX: ffff888042a88000 RSI: ffffffff8160a10e RDI: 0000000000000005 RBP: ffff888042a88028 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000006 R11: 1ffff1100d9c69bf R12: 0000000000000282 R13: ffff888042a88000 R14: 0000000000000000 R15: ffff88803986a990 __do_sys_perf_event_open+0x19de/0x2ae0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x73/0xdd RIP: 0033:0x7fe5da743b19 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:00007fe5d7cb9188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fe5da856f60 RCX: 00007fe5da743b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000580 RBP: 00007fe5da79df6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff8aadecff R14: 00007fe5d7cb9300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 15 Comm: rcu_preempt Not tainted 6.5.0-rc6-next-20230816 #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 2a 22 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:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff845cbacb RDX: fffffbfff0b4e611 RSI: 0000000000000004 RDI: ffffffff85a73080 RBP: ffffffff85a73080 R08: 0000000000000000 R09: fffffbfff0b4e610 R10: ffffffff85a73083 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4e610 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdaed52c88 CR3: 000000000b542000 CR4: 0000000000350ee0 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:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 f6 f5 d1 fc 48 89 ef e8 ae 79 d2 fc 80 e7 02 74 06 e8 14 27 f8 fc fb 65 ff 0d 04 db a6 7b <74> 07 5b 5d e9 e3 2a 00 00 0f 1f 44 00 00 5b 5d e9 d7 2a 00 00 0f RSP: 0018:ffff888008dbfce8 EFLAGS: 00000286 RAX: 00000000003558cb RBX: 0000000000000286 RCX: 1ffffffff0ba9ea9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff845cb27c RBP: ffffffff8561b458 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff85d51f17 R11: 0000000000000001 R12: ffffffff8561b458 R13: 0000000000000286 R14: 0000000000000000 R15: ffff888008dbfd98 prepare_to_swait_event+0xf6/0x370 rcu_gp_fqs_loop+0x1dc/0xd50 rcu_gp_kthread+0x3d5/0x550 kthread+0x33f/0x440 ret_from_fork+0x48/0x80 ret_from_fork_asm+0x1b/0x30 ---------------- Code disassembly (best guess): 0: 89 f6 mov %esi,%esi 2: e8 8f f0 ff ff callq 0xfffff096 7: 31 ff xor %edi,%edi 9: 89 c6 mov %eax,%esi b: 88 44 24 28 mov %al,0x28(%rsp) f: e8 52 d4 39 00 callq 0x39d466 14: 0f b6 44 24 28 movzbl 0x28(%rsp),%eax 19: 4c 8d 43 40 lea 0x40(%rbx),%r8 1d: 84 c0 test %al,%al 1f: 0f 84 64 f6 ff ff je 0xfffff689 25: e8 fc d8 39 00 callq 0x39d926 * 2a: 4c 89 f7 mov %r14,%rdi <-- trapping instruction 2d: e8 24 e7 ff ff callq 0xffffe756 32: 48 8b 0c 24 mov (%rsp),%rcx 36: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 3d: fc ff df