rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10500 ticks this GP) idle=7a5/1/0x4000000000000000 softirq=34946/34946 fqs=278 (t=10500 jiffies g=49601 q=1332) NMI backtrace for cpu 0 CPU: 0 PID: 6976 Comm: syz.4.757 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline] rcu_pending kernel/rcu/tree.c:3932 [inline] rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619 update_process_times+0x196/0x200 kernel/time/timer.c:1818 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:kasan_check_range+0x3/0x290 mm/kasan/generic.c:188 Code: 48 89 c7 e8 7f cb 6a 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 41 57 <41> 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd 48 01 f5 0f 82 RSP: 0018:ffffc90000007050 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000010 RCX: ffffffff81389418 RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc90000007190 RBP: ffffc90000007190 R08: 0000000000000003 R09: ffffc90000007230 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1cc4f2f R13: 1ffffffff1cc4f2f R14: 0000000000000000 R15: ffffc90000007140 memset+0x1f/0x40 mm/kasan/shadow.c:44 unwind_next_frame+0xbc8/0x1fa0 arch/x86/kernel/unwind_orc.c:547 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] kmem_cache_alloc_node+0x121/0x2c0 mm/slub.c:3256 __alloc_skb+0xdd/0x590 net/core/skbuff.c:415 alloc_skb include/linux/skbuff.h:1167 [inline] nlmsg_new include/net/netlink.h:953 [inline] __neigh_notify+0x7c/0x130 net/core/neighbour.c:3375 neigh_cleanup_and_release+0xa5/0x260 net/core/neighbour.c:101 neigh_del net/core/neighbour.c:197 [inline] neigh_remove_one+0x4b1/0x5c0 net/core/neighbour.c:218 neigh_forced_gc net/core/neighbour.c:251 [inline] neigh_alloc net/core/neighbour.c:429 [inline] ___neigh_create+0x45a/0x2220 net/core/neighbour.c:591 ip6_finish_output2+0x11c5/0x15a0 net/ipv6/ip6_output.c:127 dst_output include/net/dst.h:443 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xae0/0x13c0 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:BPF_PROG_RUN_ARRAY include/linux/bpf.h:1339 [inline] RIP: 0010:trace_call_bpf+0x236/0x660 kernel/trace/bpf_trace.c:127 Code: 42 80 3c 20 00 74 08 48 89 df e8 a5 0d 40 00 48 89 5c 24 48 4c 89 2b 4c 89 f3 49 8d 5e 10 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 08 48 89 df e8 00 0d 40 00 4c 8b 33 4d 85 f6 0f 84 d4 01 00 00 RSP: 0018:ffffc900030076a0 EFLAGS: 00000246 RAX: 1ffff11004fda3e2 RBX: ffff888027ed1f10 RCX: 0000000000040000 RDX: ffffc9000faea000 RSI: 00000000000011bf RDI: 00000000000011c0 RBP: ffffc900030077b8 R08: ffffffff818a1705 R09: fffffbfff20e2419 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc90003007740 R14: ffff888027ed1f00 R15: ffff888027ed1f00 perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9987 perf_trace_lock_acquire+0x3bf/0x4a0 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x4c6/0x4f0 kernel/locking/lockdep.c:5594 down_read_trylock+0x24a/0x3b0 kernel/locking/rwsem.c:1540 mmap_read_trylock include/linux/mmap_lock.h:136 [inline] do_user_addr_fault arch/x86/mm/fault.c:1298 [inline] handle_page_fault arch/x86/mm/fault.c:1445 [inline] exc_page_fault+0x181/0x700 arch/x86/mm/fault.c:1501 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline] RIP: 0010:strncpy_from_user+0x170/0x370 lib/strncpy_from_user.c:139 Code: 4c 89 ee e8 92 ba 55 fd 49 83 fd 07 0f 86 a2 00 00 00 4c 89 7c 24 08 48 c7 44 24 10 f8 ff ff ff 45 31 e4 4c 89 f5 48 8b 04 24 <4e> 8b 3c 20 48 b8 ff fe fe fe fe fe fe fe 49 8d 1c 07 4d 89 fe 49 RSP: 0018:ffffc90003007c98 EFLAGS: 00050246 RAX: 0000000000000000 RBX: 00007ffffffff000 RCX: ffff8880226f5940 RDX: ffffc9000faea000 RSI: 0000000000000fe0 RDI: 0000000000000007 RBP: ffff888056a1e620 R08: ffffffff842aa3be R09: 0000000000001000 R10: ffff8880171f2500 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000fe0 R14: ffff888056a1e620 R15: 0000000000000fe0 getname_flags+0xf5/0x4e0 fs/namei.c:149 do_sys_openat2+0xd2/0x4f0 fs/open.c:1247 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1280 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fa9264c3ff9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa92493c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa92667bf80 RCX: 00007fa9264c3ff9 RDX: 0000000000007a05 RSI: 0000000000000000 RDI: ffffffffffffff9c RBP: 00007fa926536296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa92667bf80 R15: 00007ffd4ed64708