watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.2:18091] Modules linked in: irq event stamp: 4198943 hardirqs last enabled at (4198942): [] slab_alloc_node mm/slab.c:3334 [inline] hardirqs last enabled at (4198942): [] kmem_cache_alloc_node_trace+0x2da/0x3b0 mm/slab.c:3666 hardirqs last disabled at (4198943): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (13496): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (15049): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (15049): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 18091 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:42 [inline] RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:321 [inline] RIP: 0010:deref_stack_reg+0xba/0x1d0 arch/x86/kernel/unwind_orc.c:331 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 00 01 00 00 49 8d 7c 24 10 4d 8b 74 24 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa <48> c1 ea 03 80 3c 02 00 0f 85 c7 00 00 00 49 39 ee 49 8b 44 24 10 RSP: 0018:ffff8880ba107548 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff11017420eaa RCX: 0000000000000000 RDX: ffff8880ba107720 RSI: ffff88802e20f460 RDI: ffff8880ba107720 RBP: ffff88802e20f460 R08: ffffffff8b9ab8ba R09: ffffffff8b9ab8b6 R10: ffff8880ba10776f R11: 0000000000074071 R12: ffff8880ba107710 R13: ffff8880ba107758 R14: ffff88802e208000 R15: ffffffff8b9ab8b6 FS: 00007f95f4eec700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f10d6995218 CR3: 00000000331d5000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0x9fc/0x1400 arch/x86/kernel/unwind_orc.c:502 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slab.c:3340 [inline] kmem_cache_alloc_node_trace+0x13c/0x3b0 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407 __netdev_alloc_skb_ip_align include/linux/skbuff.h:2700 [inline] netdev_alloc_skb_ip_align include/linux/skbuff.h:2710 [inline] br_ip6_multicast_alloc_query net/bridge/br_multicast.c:479 [inline] br_multicast_alloc_query net/bridge/br_multicast.c:585 [inline] __br_multicast_send_query+0x1a7/0x2dc0 net/bridge/br_multicast.c:941 br_multicast_send_query+0x216/0x3a0 net/bridge/br_multicast.c:988 br_multicast_query_expired net/bridge/br_multicast.c:1942 [inline] br_ip6_multicast_query_expired+0xdc/0x110 net/bridge/br_multicast.c:1958 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_is_held_type+0x17a/0x210 kernel/locking/lockdep.c:3948 Code: 00 00 00 00 fc ff df c7 85 84 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 75 63 48 83 3d 45 cc a6 08 00 74 2c 48 89 df 57 9d <0f> 1f 44 00 00 48 83 c4 08 44 89 e0 5b 5d 41 5c c3 48 83 c4 08 41 RSP: 0018:ffff88802e20f308 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: 0000000000000286 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: 0000000000000286 RBP: ffff88802bb74180 R08: 0000000000000001 R09: ffffed10059abea0 R10: ffff88802cd5f503 R11: 00000000f507e2aa R12: 0000000000000000 R13: ffff88823b88e2a0 R14: 0000000000000000 R15: ffffffff8871e720 lock_is_held include/linux/lockdep.h:344 [inline] ___might_sleep+0x227/0x2b0 kernel/sched/core.c:6157 begin_current_label_crit_section security/apparmor/include/cred.h:154 [inline] apparmor_file_alloc_security+0xe2/0xad0 security/apparmor/lsm.c:437 security_file_alloc+0x40/0x90 security/security.c:880 __alloc_file+0xd8/0x340 fs/file_table.c:105 alloc_empty_file+0x6d/0x170 fs/file_table.c:150 alloc_file+0x5e/0x4d0 fs/file_table.c:192 alloc_file_pseudo+0x165/0x250 fs/file_table.c:231 __shmem_file_setup.part.0+0x102/0x2b0 mm/shmem.c:3976 __shmem_file_setup mm/shmem.c:3959 [inline] shmem_kernel_file_setup mm/shmem.c:3995 [inline] shmem_zero_setup+0xdf/0x430 mm/shmem.c:4039 mmap_region+0x11c8/0x16b0 mm/mmap.c:1773 do_mmap+0x8e8/0x1080 mm/mmap.c:1530 do_mmap_pgoff include/linux/mm.h:2329 [inline] vm_mmap_pgoff+0x197/0x200 mm/util.c:357 vm_mmap+0x92/0xc0 mm/util.c:376 __x86_set_memory_region+0x391/0x580 arch/x86/kvm/x86.c:9142 alloc_apic_access_page arch/x86/kvm/vmx.c:5866 [inline] vmx_create_vcpu+0x18fe/0x2450 arch/x86/kvm/vmx.c:11123 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:2732 [inline] kvm_vm_ioctl+0x5f7/0x1700 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3238 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f95f6576e99 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:00007f95f4eec168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f95f6689f60 RCX: 00007f95f6576e99 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004 RBP: 00007f95f65d0ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4fcebf9f R14: 00007f95f4eec300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: fa cli 4: 48 c1 ea 03 shr $0x3,%rdx 8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) c: 0f 85 00 01 00 00 jne 0x112 12: 49 8d 7c 24 10 lea 0x10(%r12),%rdi 17: 4d 8b 74 24 08 mov 0x8(%r12),%r14 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 89 fa mov %rdi,%rdx * 29: 48 c1 ea 03 shr $0x3,%rdx <-- trapping instruction 2d: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 31: 0f 85 c7 00 00 00 jne 0xfe 37: 49 39 ee cmp %rbp,%r14 3a: 49 8b 44 24 10 mov 0x10(%r12),%rax