syz-executor.5 (4189) used greatest stack depth: 23816 bytes left watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:4254] Modules linked in: irq event stamp: 7803845 hardirqs last enabled at (7803844): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (7803845): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (7755378): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (7755381): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4254 Comm: syz-executor.1 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xa/0x160 kernel/stacktrace.c:82 Code: e8 5b a3 10 00 48 c7 c1 20 49 48 84 31 d2 be 80 01 00 00 48 c7 c7 20 47 48 84 e9 41 ce 5e 00 cc 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88806cf09888 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: ffffffff813019a0 RCX: 1ffff1100d9e1301 RDX: 1ffff1100d9e131b RSI: ffffffff8400011f RDI: ffff88806cf09948 RBP: ffff88806cf09918 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e12ff R12: ffff88806cf09948 R13: 0000000000000000 R14: ffff8880181c4ec0 R15: ffff88804b3e3a00 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3332c000 CR3: 000000000c880000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x73/0xf0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355 __kasan_slab_free+0x110/0x160 mm/kasan/common.c:422 slab_free_hook mm/slub.c:1542 [inline] slab_free_freelist_hook+0xa9/0x180 mm/slub.c:1576 slab_free mm/slub.c:3149 [inline] kmem_cache_free+0xa7/0x2d0 mm/slub.c:3165 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:638 __kfree_skb net/core/skbuff.c:695 [inline] consume_skb net/core/skbuff.c:850 [inline] consume_skb+0x11d/0x2b0 net/core/skbuff.c:844 mac80211_hwsim_tx_frame+0x15a/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1717 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:local_lock_acquire include/linux/local_lock_internal.h:28 [inline] RIP: 0010:lru_add_drain+0x51/0x360 mm/swap.c:733 Code: 55 2e e9 ff 48 c7 c3 a0 99 bf 86 31 c9 31 d2 68 60 8e 57 81 45 31 c9 41 b8 01 00 00 00 31 f6 4c 89 e7 e8 22 ba cf ff 48 89 da <59> 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 89 d8 RSP: 0018:ffff888048517680 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffffffff86bf99a0 RCX: 0000000000001ab7 RDX: ffffffff86bf99a0 RSI: 0000000000000008 RDI: 0000000000000001 RBP: 0000000000038000 R08: 0000000000000000 R09: ffffffff8686c6e7 R10: 0000000000000246 R11: 0000000000000001 R12: ffff88806cf38000 R13: dffffc0000000000 R14: 00000000000001fe R15: ffff888048517a70 free_pages_and_swap_cache+0x30/0x290 mm/swap_state.c:352 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu+0xe9/0x6e0 mm/mmu_gather.c:247 zap_pte_range mm/memory.c:1355 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0x17d9/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3253 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2762 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f315ce61b19 Code: Unable to access opcode bytes at RIP 0x7f315ce61aef. RSP: 002b:00007f315a395188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000003 RBX: 00007f315cf750e0 RCX: 00007f315ce61b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020001d80 RBP: 00007f315cebbf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4e2602bf R14: 00007f315a395300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout ---------------- Code disassembly (best guess): 0: e8 5b a3 10 00 callq 0x10a360 5: 48 c7 c1 20 49 48 84 mov $0xffffffff84484920,%rcx c: 31 d2 xor %edx,%edx e: be 80 01 00 00 mov $0x180,%esi 13: 48 c7 c7 20 47 48 84 mov $0xffffffff84484720,%rdi 1a: e9 41 ce 5e 00 jmpq 0x5ece60 1f: cc int3 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: 48 89 fb mov %rdi,%rbx 2f: 48 83 c7 10 add $0x10,%rdi 33: 48 89 fa mov %rdi,%rdx 36: 48 c1 ea 03 shr $0x3,%rdx 3a: 48 83 ec 08 sub $0x8,%rsp 3e: 0f .byte 0xf 3f: b6 .byte 0xb6