watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:4824] Modules linked in: irq event stamp: 6258997 hardirqs last enabled at (6258996): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (6258997): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (6254084): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (6254087): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4824 Comm: syz-executor.2 Not tainted 5.10.233 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x781/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1461 Code: c6 84 24 a8 00 00 00 00 49 39 de 74 bb e8 67 78 77 fe 48 8d bb 8c 26 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 0f b6 04 28 <38> d0 7f 08 84 c0 0f 85 64 09 00 00 44 0f b6 bb 8c 26 00 00 31 ff RSP: 0018:ffff88806ce09b90 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff8880487131c0 RCX: ffffffff82c94139 RDX: 0000000000000004 RSI: ffffffff82c93f99 RDI: ffff88804871584c RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8686a72f R10: 0000000000000007 R11: 0000000000000001 R12: ffff8880491c7280 R13: ffff8880473cb3f0 R14: ffff8880473cb1c0 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f68adfcc000 CR3: 000000001752c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 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: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:ffff8880470cf698 EFLAGS: 00000246 RAX: fffff940001c3b00 RBX: fffff940001c3b01 RCX: ffffffff8167c263 RDX: fffff940001c3b01 RSI: 0000000000000008 RDI: ffffea0000e1d800 RBP: fffff940001c3b00 R08: 0000000000000000 R09: ffffea0000e1d807 R10: fffff940001c3b00 R11: 0000000000000001 R12: 0000000000000060 R13: dffffc0000000000 R14: 00000000000001fe R15: ffffea0000e1d800 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] PageSwapBacked include/linux/page-flags.h:357 [inline] PageSwapCache include/linux/page-flags.h:402 [inline] free_swap_cache mm/swap_state.c:326 [inline] free_pages_and_swap_cache+0xd3/0x290 mm/swap_state.c:354 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: 0033:0x7fc6e12c2b19 Code: Unable to access opcode bytes at RIP 0x7fc6e12c2aef. RSP: 002b:00007fc6de838188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000004 RBX: 00007fc6e13d5f60 RCX: 00007fc6e12c2b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007fc6e131cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2f74533f R14: 00007fc6de838300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4819 Comm: syz-executor.6 Not tainted 5.10.233 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:25 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:200 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:162 [inline] RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:281 [inline] RIP: 0010:lapic_next_deadline+0x21/0x50 arch/x86/kernel/apic/apic.c:479 Code: a5 ee ca 02 0f 1f 44 00 00 66 0f 1f 44 00 00 0f 31 48 c1 e2 20 b9 e0 06 00 00 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 0f 30 <0f> 1f 44 00 00 31 c0 e9 d3 3c 12 03 48 89 c6 31 d2 bf e0 06 00 00 RSP: 0018:ffff88806cf09820 EFLAGS: 00000012 RAX: 000000e6724ac708 RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 00000000000000e6 RSI: ffff88806cf27980 RDI: 00000000000006a3 RBP: ffff88806cf27980 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 00000000000006a3 R13: 0000000000000000 R14: 7fffffffffffffff R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb9ac90f998 CR3: 000000001752c000 CR4: 0000000000350ee0 Call Trace: clockevents_program_event+0x244/0x360 kernel/time/clockevents.c:334 tick_program_event+0xa0/0x140 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x3e1/0x9b0 kernel/time/hrtimer.c:1725 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xfb/0x310 arch/x86/kernel/apic/apic.c:1112 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x3e/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [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+0x5a/0x1f0 mm/kasan/generic.c:192 Code: 87 c0 00 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 <49> 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e 14 01 00 00 41 89 RSP: 0018:ffff88806cf09a18 EFLAGS: 00000282 RAX: fffffbfff0f40c10 RBX: ffffffff87a06080 RCX: ffffffff8127af67 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff87a06080 RBP: fffffbfff0f40c10 R08: 0000000000000000 R09: ffffffff87a06083 R10: fffffbfff0f40c10 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f40c10 R14: 0000000000000001 R15: 1ffff1100d9e1348 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/asm-generic/atomic-instrumented.h:27 [inline] virt_spin_lock arch/x86/include/asm/qspinlock.h:99 [inline] queued_spin_lock_slowpath+0xa7/0x8c0 kernel/locking/qspinlock.c:326 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1dc/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x695/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1450 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 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: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:ffff8880177af740 EFLAGS: 00000246 RAX: ffffed1001956bdc RBX: ffffed1001956bdd RCX: ffffffff81600524 RDX: ffffed1001956bdd RSI: 0000000000000008 RDI: ffff88800cab5ee0 RBP: ffffed1001956bdc R08: 0000000000000001 R09: ffff88800cab5ee7 R10: ffffed1001956bdc R11: 0000000000000001 R12: ffffffffffffffd4 R13: ffff88800cab5ee0 R14: dffffc0000000000 R15: ffffffffffffffd4 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic64_add_return include/asm-generic/atomic-instrumented.h:882 [inline] atomic_long_add_return include/asm-generic/atomic-long.h:59 [inline] add_mm_counter include/linux/mm.h:1910 [inline] add_mm_rss_vec mm/memory.c:491 [inline] zap_pte_range mm/memory.c:1339 [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+0x12e4/0x1fe0 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: 0033:0x7fbe61f00b19 Code: Unable to access opcode bytes at RIP 0x7fbe61f00aef. RSP: 002b:00007fbe5f476188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000004 RBX: 00007fbe62013f60 RCX: 00007fbe61f00b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007fbe61f5af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5c255bcf R14: 00007fbe5f476300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: c6 84 24 a8 00 00 00 movb $0x0,0xa8(%rsp) 7: 00 8: 49 39 de cmp %rbx,%r14 b: 74 bb je 0xffffffc8 d: e8 67 78 77 fe callq 0xfe777879 12: 48 8d bb 8c 26 00 00 lea 0x268c(%rbx),%rdi 19: 48 89 f8 mov %rdi,%rax 1c: 48 89 fa mov %rdi,%rdx 1f: 48 c1 e8 03 shr $0x3,%rax 23: 83 e2 07 and $0x7,%edx 26: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax * 2a: 38 d0 cmp %dl,%al <-- trapping instruction 2c: 7f 08 jg 0x36 2e: 84 c0 test %al,%al 30: 0f 85 64 09 00 00 jne 0x99a 36: 44 0f b6 bb 8c 26 00 movzbl 0x268c(%rbx),%r15d 3d: 00 3e: 31 ff xor %edi,%edi