rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=a1b/1/0x4000000000000000 softirq=142068/142069 fqs=5245 (detected by 0, t=10502 jiffies, g=215685, q=222) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3625 Comm: syz-executor.1 Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0x11/0x12 Code: 51 41 52 41 53 e8 df 0a 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 3c 01 75 02 5a 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 55 48 89 e5 41 57 41 RSP: 0018:ffffc900001e0c18 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 1ffffffff21e3f5c RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff90f1fad8 RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff21e3f5c R10: fffffbfff21e3f5c R11: 0000000000000000 R12: 1ffffffff21e3f5d R13: ffffffff90f1fae8 R14: ffffffff90f1fae0 R15: ffffffff90f1fad8 FS: 0000555555918400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 000000004a13e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:596 [inline] queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline] do_raw_spin_unlock+0x134/0x8a0 kernel/locking/spinlock_debug.c:141 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock_irqrestore+0x7d/0x130 kernel/locking/spinlock.c:194 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline] debug_deactivate kernel/time/hrtimer.c:481 [inline] __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x2f9/0xa60 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:kasan_quarantine_reduce+0xb/0x190 mm/kasan/quarantine.c:243 Code: 31 ed e9 2a ff ff ff 4c 8b b1 e0 5b d0 90 4c 3b 35 12 08 f9 0e 73 aa eb c2 66 0f 1f 44 00 00 55 41 56 53 48 8b 05 e5 87 f8 0e <48> 3b 05 06 08 f9 0e 77 05 5b 41 5e 5d c3 48 c7 c7 60 c8 df 8c e8 RSP: 0018:ffffc90003f1ece0 EFLAGS: 00000206 RAX: 000000000cdb48b8 RBX: ffff888078efd840 RCX: 0000000000000001 RDX: 0000000000000cc0 RSI: ffff888078efd840 RDI: ffff88801144fa00 RBP: ffffc90003f1ef28 R08: dffffc0000000001 R09: fffffbfff1c426f6 R10: fffffbfff1c426f6 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888078efd840 R14: 0000000000000cc0 R15: ffff88801144fa00 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:446 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:749 [inline] slab_alloc_node mm/slub.c:3217 [inline] kmem_cache_alloc_node+0x201/0x370 mm/slub.c:3267 alloc_vmap_area+0x1b8/0x1c80 mm/vmalloc.c:1560 __get_vm_area_node+0x18a/0x380 mm/vmalloc.c:2466 __vmalloc_node_range+0x343/0x11c0 mm/vmalloc.c:3132 __vmalloc_node mm/vmalloc.c:3237 [inline] vzalloc+0x75/0x80 mm/vmalloc.c:3307 alloc_counters+0xd2/0x7f0 net/ipv4/netfilter/ip_tables.c:801 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:823 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1024 [inline] do_ipt_get_ctl+0xbb4/0x1cb0 net/ipv4/netfilter/ip_tables.c:1663 nf_getsockopt+0x2ab/0x2d0 net/netfilter/nf_sockopt.c:116 ip_getsockopt+0x2188/0x2ce0 net/ipv4/ip_sockglue.c:1786 __sys_getsockopt+0x213/0x4b0 net/socket.c:2224 __do_sys_getsockopt net/socket.c:2239 [inline] __se_sys_getsockopt net/socket.c:2236 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2236 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f993a48a66a Code: 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff6a304ad8 EFLAGS: 00000216 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f993a48a66a RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fff6a304b00 R08: 00007fff6a304afc R09: ff78736871746264 R10: 00007fff6a304b60 R11: 0000000000000216 R12: 00007fff6a304b60 R13: 0000000000000003 R14: 00007fff6a304afc R15: 00007f993a56e820 ---------------- Code disassembly (best guess): 0: 51 push %rcx 1: 41 52 push %r10 3: 41 53 push %r11 5: e8 df 0a 00 00 callq 0xae9 a: 41 5b pop %r11 c: 41 5a pop %r10 e: 41 59 pop %r9 10: 41 58 pop %r8 12: 5f pop %rdi 13: 5e pop %rsi 14: 5a pop %rdx 15: 59 pop %rcx 16: c3 retq 17: 66 90 xchg %ax,%ax 19: 52 push %rdx 1a: b8 01 00 00 00 mov $0x1,%eax 1f: 31 d2 xor %edx,%edx 21: f0 0f b0 17 lock cmpxchg %dl,(%rdi) 25: 3c 01 cmp $0x1,%al 27: 75 02 jne 0x2b 29: 5a pop %rdx * 2a: c3 retq <-- trapping instruction 2b: 56 push %rsi 2c: 0f b6 f0 movzbl %al,%esi 2f: e8 c5 ff ff ff callq 0xfffffff9 34: 5e pop %rsi 35: 5a pop %rdx 36: c3 retq 37: 66 90 xchg %ax,%ax 39: 55 push %rbp 3a: 48 89 e5 mov %rsp,%rbp 3d: 41 57 push %r15 3f: 41 rex.B