watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz-executor.0:10949] Modules linked in: irq event stamp: 16953893 hardirqs last enabled at (16953892): [] seqcount_lockdep_reader_access include/linux/seqlock.h:105 [inline] hardirqs last enabled at (16953892): [] timekeeping_get_delta kernel/time/timekeeping.c:252 [inline] hardirqs last enabled at (16953892): [] timekeeping_get_ns kernel/time/timekeeping.c:386 [inline] hardirqs last enabled at (16953892): [] ktime_get_with_offset+0x3f2/0x500 kernel/time/timekeeping.c:872 hardirqs last disabled at (16953893): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1097 softirqs last enabled at (16939552): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (16939552): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (16939555): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (16939555): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 CPU: 0 PID: 10949 Comm: syz-executor.0 Not tainted 5.15.0-rc4-next-20211008-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1177 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0x6a/0x150 kernel/rcu/tree.c:1167 Code: 8d 3c ed 80 98 54 8b 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ad 00 00 00 48 03 1c ed 80 98 54 8b <48> b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 80 RSP: 0018:ffffc90000007610 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: ffff8880b9c3a8c0 RCX: ffffffff815bb071 RDX: 1ffffffff16a9310 RSI: 0000000000000103 RDI: ffffffff8b549880 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d8f9ad7 R10: fffffbfff1b1f35a R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: ffff8880281aba00 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3bc41c8000 CR3: 000000000b88e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_held_common kernel/rcu/update.c:112 [inline] rcu_read_lock_held_common kernel/rcu/update.c:102 [inline] rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x522/0x720 kernel/locking/lockdep.c:5648 rcu_lock_release include/linux/rcupdate.h:273 [inline] rcu_read_unlock include/linux/rcupdate.h:727 [inline] is_bpf_text_address+0x99/0x170 kernel/bpf/core.c:709 kernel_text_address kernel/extable.c:124 [inline] kernel_text_address+0x39/0x80 kernel/extable.c:93 __kernel_text_address+0x9/0x30 kernel/extable.c:78 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3213 [inline] kmem_cache_alloc_node+0x25c/0x3d0 mm/slub.c:3249 __alloc_skb+0x214/0x360 net/core/skbuff.c:412 skb_copy+0x137/0x2f0 net/core/skbuff.c:1584 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 drivers/net/wireless/mac80211_hwsim.c:1565 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1861 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x13/0x60 kernel/kcov.c:199 Code: 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 d9 f9 8b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 <65> 48 8b 14 25 40 70 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 RSP: 0018:ffffc90015c4f6e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880281aba00 RSI: ffffffff81b4f9cb RDI: ffffea00024d4a00 RBP: ffffea00024d4a00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81b52b11 R11: 0000000000000000 R12: ffffea00024d4a00 R13: ffffea00024d4a08 R14: dffffc0000000000 R15: ffffc90015c4fab0 folio_flags.constprop.0+0xb/0x70 include/linux/page-flags.h:252 folio_test_swapbacked include/linux/page-flags.h:437 [inline] folio_test_swapcache include/linux/page-flags.h:478 [inline] PageSwapCache include/linux/page-flags.h:484 [inline] free_swap_cache+0x5f/0x200 mm/swap_state.c:291 free_pages_and_swap_cache+0x58/0x90 mm/swap_state.c:319 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:242 [inline] tlb_flush_mmu+0xe9/0x6b0 mm/mmu_gather.c:249 zap_pte_range mm/memory.c:1418 [inline] zap_pmd_range mm/memory.c:1467 [inline] zap_pud_range mm/memory.c:1496 [inline] zap_p4d_range mm/memory.c:1517 [inline] unmap_page_range+0x1cac/0x29f0 mm/memory.c:1538 unmap_single_vma+0x198/0x310 mm/memory.c:1583 unmap_vmas+0x16b/0x2f0 mm/memory.c:1615 exit_mmap+0x1d0/0x630 mm/mmap.c:3171 __mmput+0x122/0x4b0 kernel/fork.c:1165 mmput+0x56/0x60 kernel/fork.c:1186 exit_mm kernel/exit.c:502 [inline] do_exit+0xaba/0x2a30 kernel/exit.c:813 do_group_exit+0x125/0x310 kernel/exit.c:923 get_signal+0x47d/0x2160 kernel/signal.c:2868 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:863 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9d5c78a8d9 Code: Unable to access opcode bytes at RIP 0x7f9d5c78a8af. RSP: 002b:00007f9d59d01188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00007f9d5c88ef60 RCX: 00007f9d5c78a8d9 RDX: 0000000020000000 RSI: 0000000000008933 RDI: 0000000000000005 RBP: 00007f9d5c7e4cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff55ad088f R14: 00007f9d59d01300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10952 Comm: syz-executor.1 Not tainted 5.15.0-rc4-next-20211008-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:asm_sysvec_apic_timer_interrupt+0x0/0x20 arch/x86/include/asm/idtentry.h:637 Code: 00 66 0f 1f 84 00 00 00 00 00 0f 01 ca 6a ff e8 76 03 00 00 48 89 e7 e8 fe 90 eb ff e9 29 04 00 00 66 0f 1f 84 00 00 00 00 00 <0f> 01 ca 6a ff e8 56 03 00 00 48 89 e7 e8 5e 8f eb ff e9 09 04 00 RSP: 0018:ffffc90000dc0a08 EFLAGS: 00000006 RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff1933ff8 RDX: 0000000000000001 RSI: 0000000000000102 RDI: 0000000000000000 RBP: ffffffff8c99ffc0 R08: 0000000000000001 R09: ffffffff8ff3d9a7 R10: 0000000000000001 R11: 0000000000000080 R12: 00000000000043f2 R13: fffffbfff1933ff8 R14: 0000000000000001 R15: ffff8880b9d3a840 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558c0652c070 CR3: 000000006fa74000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x3ba/0xb40 kernel/locking/qspinlock.c:508 Code: eb c6 45 01 01 41 bc 00 80 00 00 48 c1 e9 03 83 e3 07 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 2c 01 eb 0c f3 90 <41> 83 ec 01 0f 84 72 04 00 00 41 0f b6 45 00 38 d8 7f 08 84 c0 0f RSP: 0018:ffffc90000dc0a38 EFLAGS: 00000206 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:368 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x68f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1516 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1861 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:finish_task_switch.isra.0+0x221/0xa20 kernel/sched/core.c:4821 Code: 8b 3a 4c 89 e7 48 c7 02 00 00 00 00 ff d1 4d 85 ff 75 bf 4c 89 e7 e8 fe 27 fe 07 e8 09 86 2c 00 fb 65 48 8b 1c 25 40 70 02 00 <48> 8d bb 88 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc90015c6f830 EFLAGS: 00000202 RAX: 0000000000dd0001 RBX: ffff8880281a9d00 RCX: 1ffffffff1b1ede9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90015c6f870 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817cbcb8 R11: 0000000000000000 R12: ffff8880b9d39a40 R13: ffff88801bccd700 R14: 0000000000000000 R15: ffff8880b9d39a58 context_switch kernel/sched/core.c:4956 [inline] __schedule+0x948/0x26f0 kernel/sched/core.c:6234 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6400 __cond_resched+0x13/0x20 kernel/sched/core.c:8113 _cond_resched include/linux/sched.h:2026 [inline] vunmap_pmd_range mm/vmalloc.c:359 [inline] vunmap_pud_range mm/vmalloc.c:382 [inline] vunmap_p4d_range mm/vmalloc.c:405 [inline] vunmap_range_noflush+0x4ec/0x6d0 mm/vmalloc.c:436 free_unmap_vmap_area mm/vmalloc.c:1778 [inline] remove_vm_area+0x1c2/0x230 mm/vmalloc.c:2521 vm_remove_mappings mm/vmalloc.c:2550 [inline] __vunmap+0x392/0xb70 mm/vmalloc.c:2615 __vfree+0x3c/0xd0 mm/vmalloc.c:2673 vfree+0x5a/0x90 mm/vmalloc.c:2704 kcov_put kernel/kcov.c:411 [inline] kcov_put+0x26/0x40 kernel/kcov.c:407 kcov_close+0xc/0x10 kernel/kcov.c:513 __fput+0x286/0x9f0 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xbac/0x2a30 kernel/exit.c:826 do_group_exit+0x125/0x310 kernel/exit.c:923 get_signal+0x47d/0x2160 kernel/signal.c:2868 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:863 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2e8f0338d9 Code: Unable to access opcode bytes at RIP 0x7f2e8f0338af. RSP: 002b:00007f2e8c5aa188 EFLAGS: 00000246 ORIG_RAX: 000000000000009b RAX: 0000000000000000 RBX: 00007f2e8f137f60 RCX: 00007f2e8f0338d9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000340 RBP: 00007f2e8f08dcb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd9d872c9f R14: 00007f2e8c5aa300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 8d 3c ed 80 98 54 8b lea -0x74ab6780(,%rbp,8),%edi 7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax e: fc ff df 11: 48 89 fa mov %rdi,%rdx 14: 48 c1 ea 03 shr $0x3,%rdx 18: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1c: 0f 85 ad 00 00 00 jne 0xcf 22: 48 03 1c ed 80 98 54 add -0x74ab6780(,%rbp,8),%rbx 29: 8b * 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 31: fc ff df 34: 48 8d 7b 18 lea 0x18(%rbx),%rdi 38: 48 89 fa mov %rdi,%rdx 3b: 48 c1 ea 03 shr $0x3,%rdx 3f: 80 .byte 0x80