watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.6:5922] Modules linked in: irq event stamp: 4287741 hardirqs last enabled at (4287740): [<ffffffff84000c82>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4287741): [<ffffffff83e057db>] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (4280628): [<ffffffff84001002>] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4280631): [<ffffffff84001002>] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5922 Comm: syz-executor.6 Not tainted 5.10.154 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 RSP: 0018:ffff88806ce09518 EFLAGS: 00000216 RAX: 1ffffffff0ae1a41 RBX: ffffffff8570d208 RCX: ffffffff81600b61 RDX: 0000000000000000 RSI: ffffffff859f4c30 RDI: ffffffff8570d208 RBP: ffffffff8570d208 R08: ffffffff859f4c30 R09: ffffffff859f4c36 R10: 0000000000032042 R11: 1ffff1100d9c12b4 R12: ffffffff8570d208 R13: ffffffff8570d208 R14: ffffffff8570d208 R15: dffffc0000000000 FS: 00007f4677afb700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d525000 CR3: 00000000451e8000 CR4: 0000000000350ef0 Call Trace: <IRQ> orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x2b3/0x1a90 arch/x86/kernel/unwind_orc.c:448 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x360 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x360 mm/slub.c:2909 __skb_ext_alloc+0x19/0x90 net/core/skbuff.c:6223 skb_ext_add+0x508/0x670 net/core/skbuff.c:6318 skb_set_kcov_handle include/linux/skbuff.h:4632 [inline] skb_set_kcov_handle include/linux/skbuff.h:4622 [inline] __alloc_skb+0x3c1/0x620 net/core/skbuff.c:253 skb_copy+0x137/0x2f0 net/core/skbuff.c:1522 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1494 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1711 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1765 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1788 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x86b kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 </IRQ> __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:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:pte_none arch/x86/include/asm/pgtable.h:756 [inline] RIP: 0010:copy_pte_range mm/memory.c:975 [inline] RIP: 0010:copy_pmd_range mm/memory.c:1070 [inline] RIP: 0010:copy_pud_range mm/memory.c:1107 [inline] RIP: 0010:copy_p4d_range mm/memory.c:1131 [inline] RIP: 0010:copy_page_range+0xee1/0x38c0 mm/memory.c:1204 Code: 00 48 8b 44 24 38 48 2b 44 24 28 48 01 e8 48 89 44 24 10 e8 91 1e e0 ff 48 89 e8 48 c1 e8 03 42 80 3c 38 00 0f 85 34 20 00 00 <48> 8b 5d 00 31 ff 49 89 dc 49 83 e4 9f 4c 89 e6 e8 da 17 e0 ff 4d RSP: 0018:ffff888021277840 EFLAGS: 00000246 RAX: 1ffff11001cd14be RBX: 0000000000000010 RCX: ffffc90006e0a000 RDX: 0000000000040000 RSI: ffffffff81600b4f RDI: 0000000000000005 RBP: ffff88800e68a5f0 R08: 0000000000000000 R09: ffffea00010dbdc7 R10: 000000000000001f R11: 0000000000000001 R12: 0000000000000008 R13: 0000000000000028 R14: 00007f46784fd000 R15: dffffc0000000000 dup_mmap kernel/fork.c:593 [inline] dup_mm+0x8b9/0x1110 kernel/fork.c:1368 copy_mm kernel/fork.c:1424 [inline] copy_process+0x23fc/0x66f0 kernel/fork.c:2106 kernel_clone+0xe7/0xa20 kernel/fork.c:2467 __do_sys_fork+0x8a/0xc0 kernel/fork.c:2530 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f467a585b19 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:00007f4677afb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f467a698f60 RCX: 00007f467a585b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f467a5dff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7c06089f R14: 00007f4677afb300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.154 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:memory_is_nonzero mm/kasan/generic.c:107 [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+0x64/0x1f0 mm/kasan/generic.c:192 Code: 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 eb 41 83 e3 07 0f 85 a9 00 00 RSP: 0018:ffff88806cf09a18 EFLAGS: 00000202 RAX: fffffbfff0f269b4 RBX: fffffbfff0f269b5 RCX: ffffffff81275d27 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff87934da0 RBP: fffffbfff0f269b4 R08: 0000000000000000 R09: ffffffff87934da3 R10: fffffbfff0f269b4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f269b4 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc49e1d8998 CR3: 000000000cf02000 CR4: 0000000000350ee0 Call Trace: <IRQ> 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:1445 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1711 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1765 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1788 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x86b kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 </IRQ> __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:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:default_idle+0xe/0x20 arch/x86/kernel/process.c:690 Code: 89 fd e9 4b ff ff ff 4c 89 e7 e8 4d e5 89 fd eb 8f 66 66 2e 0f 1f 84 00 00 00 00 00 e9 07 00 00 00 0f 00 2d 84 59 60 00 fb f4 <e9> fd 57 3e 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffff88800856fe78 EFLAGS: 00000206 RAX: ffffffff83e1e7f0 RBX: ffff88800852b300 RCX: ffffffff83e0653c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e1ebb3 RBP: ffffed10010a5660 R08: 0000000000000001 R09: ffff88806cf3c12b R10: ffffed100d9e7825 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff85670c88 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x8b/0xd0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x3ad/0x520 kernel/sched/idle.c:300 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396 secondary_startup_64_no_verify+0xc2/0xcb ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 50 jne 0x8b 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1