sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:4056] Modules linked in: irq event stamp: 9890471 hardirqs last enabled at (9890470): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (9890471): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (9860338): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (9860341): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4056 Comm: syz-executor.5 Not tainted 5.10.233 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__kernel_text_address+0x9/0x40 kernel/extable.c:105 Code: c7 20 6a 03 85 e8 77 5f 25 00 0f b6 c0 eb ab 48 c7 c7 c4 43 67 85 e8 e6 d6 50 00 e9 29 ff ff ff 90 53 48 89 fb e8 d7 fe ff ff <85> c0 75 1b 48 81 fb 00 30 e7 85 72 0c 31 c0 48 81 fb a5 50 f5 85 RSP: 0018:ffff88806ce09718 EFLAGS: 00000282 RAX: 0000000000000001 RBX: ffffffff81600a19 RCX: 1ffff1100d9c1201 RDX: 1ffff1100d9c12f1 RSI: ffff888049847730 RDI: ffffffff81600a19 RBP: ffff88806ce09788 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c12d5 R12: ffff88806ce097f8 R13: 0000000000000000 R14: ffff88801831b480 R15: 00000000000000e8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efce7227a40 CR3: 0000000009b96000 CR4: 0000000000350ef0 Call Trace: unwind_get_return_address arch/x86/kernel/unwind_orc.c:323 [inline] unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:318 arch_stack_walk+0x99/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x14b/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:200 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:448 netdev_alloc_skb include/linux/skbuff.h:2855 [inline] dev_alloc_skb include/linux/skbuff.h:2868 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __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:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __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:bytes_is_nonzero mm/kasan/generic.c:91 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0x198/0x1f0 mm/kasan/generic.c:192 Code: 7d 85 41 bb 01 00 00 00 5b 5d 44 89 d8 41 5c e9 1e 92 b3 02 48 85 d2 74 e9 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 db 80 38 00 <74> f2 e9 28 ff ff ff 48 29 c3 48 89 da 49 89 d3 49 c1 fb 3f 49 c1 RSP: 0018:ffff888049847610 EFLAGS: 00000246 RAX: fffff940002347e6 RBX: fffff940002347e7 RCX: ffffffff8156e925 RDX: fffff940002347e7 RSI: 0000000000000004 RDI: ffffea00011a3f34 RBP: fffff940002347e6 R08: 0000000000000000 R09: ffffea00011a3f37 R10: fffff940002347e6 R11: 0000000000000001 R12: ffffea00011a3f34 R13: dffffc0000000000 R14: ffff888009da0870 R15: ffffea00011a3f00 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/asm-generic/atomic-instrumented.h:27 [inline] page_ref_count include/linux/page_ref.h:67 [inline] put_page_testzero include/linux/mm.h:707 [inline] release_pages+0x115/0xc20 mm/swap.c:914 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: 0033:0x7fdce8ef9c27 Code: Unable to access opcode bytes at RIP 0x7fdce8ef9bfd. RSP: 002b:00007fdce646ffa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fdce8ef9c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000180 RBP: 00007fdce6470040 R08: 0000000000000000 R09: 0000000000100000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000180 R14: 00007fdce6470000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 syz-executor.5 (286) used greatest stack depth: 23664 bytes left ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 20 6a 03 and %ch,0x3(%rdx) 3: 85 e8 test %ebp,%eax 5: 77 5f ja 0x66 7: 25 00 0f b6 c0 and $0xc0b60f00,%eax c: eb ab jmp 0xffffffb9 e: 48 c7 c7 c4 43 67 85 mov $0xffffffff856743c4,%rdi 15: e8 e6 d6 50 00 callq 0x50d700 1a: e9 29 ff ff ff jmpq 0xffffff48 1f: 90 nop 20: 53 push %rbx 21: 48 89 fb mov %rdi,%rbx 24: e8 d7 fe ff ff callq 0xffffff00 * 29: 85 c0 test %eax,%eax <-- trapping instruction 2b: 75 1b jne 0x48 2d: 48 81 fb 00 30 e7 85 cmp $0xffffffff85e73000,%rbx 34: 72 0c jb 0x42 36: 31 c0 xor %eax,%eax 38: 48 81 fb a5 50 f5 85 cmp $0xffffffff85f550a5,%rbx