watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.2:15876] Modules linked in: irq event stamp: 7787327 hardirqs last enabled at (7787326): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7787327): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (7775638): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (7775641): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 15876 Comm: syz-executor.2 Not tainted 6.5.0-rc5-next-20230808 #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: 7d e2 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:ffff88806ce09598 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffff88806ce09660 RCX: 0000000000000100 RDX: ffff888018e60000 RSI: ffffffff8113ed2d RDI: ffff88806ce09670 RBP: ffff8880436776b0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000001 R14: ffff888043678000 R15: ffff8880436776b8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efe9d471718 CR3: 000000000dca4000 CR4: 0000000000350ef0 Call Trace: stack_access_ok+0xfd/0x260 unwind_next_frame+0x1b94/0x25d0 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 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:lock_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 75 a6 d3 7e 83 f8 01 0f 85 8f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff888043677588 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff110086ceeb3 RCX: 0000000000000001 RDX: 1ffff110031cc13d RSI: c0927cb26ae65a2c RDI: 00000000653e8aca RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff0eea768 R10: ffffffff87753b47 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8560d9e0 R15: 0000000000000000 __is_insn_slot_addr+0x41/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x7d/0xe0 arch_stack_walk+0xa2/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x8e/0xa0 __call_rcu_common.constprop.0+0x6a/0xbd0 kmemleak_free_percpu+0x190/0x2f0 free_percpu+0x30/0xec0 percpu_counter_destroy+0x11e/0x1c0 __mmdrop+0x2c6/0x440 mmput+0x303/0x390 do_exit+0x99f/0x2740 do_group_exit+0xd4/0x2a0 get_signal+0x2693/0x2720 arch_do_signal_or_restart+0x81/0x790 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f303ed95b19 Code: Unable to access opcode bytes at 0x7f303ed95aef. RSP: 002b:00007f303c30b188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000005 RBX: 00007f303eea8f60 RCX: 00007f303ed95b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000580 RBP: 00007f303edeff6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6a4e0def R14: 00007f303c30b300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.5.0-rc5-next-20230808 #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 4a 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:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff845e2b3b RDX: fffffbfff0b4e591 RSI: 0000000000000004 RDI: ffffffff85a72c80 RBP: ffffffff85a72c80 R08: 0000000000000000 R09: fffffbfff0b4e590 R10: ffffffff85a72c83 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4e590 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf5a8fc430 CR3: 000000000dca4000 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: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 69 bd 26 00 0f 1f 44 00 00 fb f4 e9 1c 7d 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff888008de7e70 EFLAGS: 00000206 RAX: 000000000047a2c5 RBX: 0000000000000001 RCX: ffffffff845bc03e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8129cac5 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6a08 R10: ffff88806cf35043 R11: 0000000000000001 R12: ffffffff85d51b90 R13: 1ffff110011bcfd3 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x305/0x3c0 cpu_startup_entry+0x18/0x20 start_secondary+0x1bf/0x220 secondary_startup_64_no_verify+0x179/0x17b ---------------- Code disassembly (best guess): 0: 7d e2 jge 0xffffffe4 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