SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=5241 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=5241 comm=syz-executor.1 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:5196] Modules linked in: irq event stamp: 2478225 hardirqs last enabled at (2478224): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (2478225): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (2474586): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (2474589): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5196 Comm: syz-executor.2 Not tainted 5.10.191 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:find_busiest_group+0x1a53/0x2de0 kernel/sched/fair.c:9647 Code: 00 00 c7 40 08 00 00 00 00 48 c7 40 10 00 00 00 00 48 c7 40 30 00 00 00 00 48 8b 84 24 80 02 00 00 65 48 2b 04 25 28 00 00 00 <0f> 85 7c 11 00 00 48 81 c4 88 02 00 00 4c 89 e8 5b 5d 41 5c 41 5d RSP: 0018:ffff88806ce099f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff812187ea RDX: 1ffff1100d9c13bb RSI: 0000000000000005 RDI: ffff88806ce09dd8 RBP: 0000000000000002 R08: 0000000000000000 R09: ffffffff8567158f R10: fffffbfff0ace2b1 R11: 0000000000000001 R12: ffff88800807e000 R13: 0000000000000000 R14: ffff88806ce09da8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564b01f61998 CR3: 0000000040b1e000 CR4: 0000000000350ef0 Call Trace: load_balance+0x358/0x29d0 kernel/sched/fair.c:9904 rebalance_domains+0x690/0xe40 kernel/sched/fair.c:10336 __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:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:release_pages+0x730/0xc20 mm/swap.c:879 Code: 89 67 08 48 c1 e8 03 42 80 3c 28 00 0f 85 dd 03 00 00 48 8d 44 24 68 49 89 47 10 48 8b 44 24 10 48 89 44 24 68 e8 b0 f3 e9 ff <8b> 5c 24 40 83 c5 01 89 ee 89 df e8 70 ec e9 ff 39 eb 0f 84 1a 02 RSP: 0018:ffff88804941f640 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 0000000000000005 RCX: ffffffff81567d50 RDX: ffff888045e48000 RSI: ffffffff81568310 RDI: 0000000000000001 RBP: 00000000000001d3 R08: 0000000000000001 R09: ffffea0000f0b1b7 R10: 0000000000000000 R11: 0000000000000001 R12: ffffea0000f0b100 R13: dffffc0000000000 R14: ffff8880470e1eb0 R15: ffffea0000f0b180 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:3235 __mmput kernel/fork.c:1093 [inline] mmput+0xca/0x340 kernel/fork.c:1114 exit_mm kernel/exit.c:534 [inline] do_exit+0xa96/0x2600 kernel/exit.c:845 do_group_exit+0x125/0x310 kernel/exit.c:980 get_signal+0x4bc/0x22f0 kernel/signal.c:2751 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 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:287 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0033:0x7fb5f3920b19 Code: Unable to access opcode bytes at RIP 0x7fb5f3920aef. RSP: 002b:00007fb5f0e96218 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007fb5f3a33f68 RCX: 00007fb5f3920b19 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fb5f3a33f6c RBP: 00007fb5f3a33f60 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb5f3a33f6c R13: 00007fff9b5c2f9f R14: 00007fb5f0e96300 R15: 0000000000022000 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 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: c7 40 08 00 00 00 00 movl $0x0,0x8(%rax) 9: 48 c7 40 10 00 00 00 movq $0x0,0x10(%rax) 10: 00 11: 48 c7 40 30 00 00 00 movq $0x0,0x30(%rax) 18: 00 19: 48 8b 84 24 80 02 00 mov 0x280(%rsp),%rax 20: 00 21: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax 28: 00 00 * 2a: 0f 85 7c 11 00 00 jne 0x11ac <-- trapping instruction 30: 48 81 c4 88 02 00 00 add $0x288,%rsp 37: 4c 89 e8 mov %r13,%rax 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: 41 5c pop %r12 3e: 41 5d pop %r13