rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=7db/1/0x4000000000000000 softirq=10156/10164 fqs=4930 (t=10500 jiffies g=13005 q=1362) NMI backtrace for cpu 0 CPU: 0 PID: 5297 Comm: syz.2.295 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_dump_cpu_stacks+0x22f/0x380 kernel/rcu/tree_stall.h:349 print_cpu_stall+0x31d/0x5f0 kernel/rcu/tree_stall.h:633 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline] rcu_pending kernel/rcu/tree.c:3936 [inline] rcu_sched_clock_irq+0x6d8/0x1110 kernel/rcu/tree.c:2619 update_process_times+0x193/0x200 kernel/time/timer.c:1818 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x4fe/0xc40 kernel/time/hrtimer.c:1754 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:671 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 7d 16 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc900000074a0 EFLAGS: 00000206 RAX: 1fa361880f24ab00 RBX: 1ffff92000000e98 RCX: 1fa361880f24ab00 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: ffffc90000007580 R08: dffffc0000000000 R09: fffffbfff1ff6e39 R10: fffffbfff1ff6e39 R11: 1ffffffff1ff6e38 R12: ffffffff8c120800 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] is_bpf_text_address+0x24f/0x270 kernel/bpf/core.c:727 kernel_text_address kernel/extable.c:151 [inline] __kernel_text_address+0x9a/0x100 kernel/extable.c:105 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x98/0xe0 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_kmalloc mm/kasan/common.c:513 [inline] __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522 kmalloc_reserve net/core/skbuff.c:356 [inline] __alloc_skb+0x22c/0x750 net/core/skbuff.c:427 alloc_skb include/linux/skbuff.h:1162 [inline] ndisc_alloc_skb+0xa6/0x420 net/ipv6/ndisc.c:422 ndisc_send_rs+0x291/0x730 net/ipv6/ndisc.c:691 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3957 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x525/0x7c0 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:preempt_count_equals kernel/sched/core.c:9574 [inline] RIP: 0010:___might_sleep+0x151/0x600 kernel/sched/core.c:9607 Code: 65 44 8b 3d 99 6b af 7e 41 81 e7 ff ff ff 7f 65 48 8b 15 82 6b af 7e 4c 8d aa 3c 04 00 00 4d 89 ee 49 c1 ee 03 43 0f b6 04 26 <84> c0 0f 85 34 03 00 00 45 03 7d 00 44 3b 7c 24 2c 75 61 48 c7 84 RSP: 0018:ffffc9000346f140 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: 1ffff9200068de30 RCX: 1fa361880f24ab00 RDX: ffff88801db31dc0 RSI: ffffffff8a0b2860 RDI: ffffffff8a599340 RBP: ffffc9000346f260 R08: dffffc0000000000 R09: fffffbfff1ad2dd6 R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: dffffc0000000000 R13: ffff88801db321fc R14: 1ffff11003b6643f R15: 0000000000000000 vm_area_alloc_pages mm/vmalloc.c:2883 [inline] __vmalloc_area_node mm/vmalloc.c:2925 [inline] __vmalloc_node_range+0x54c/0x8b0 mm/vmalloc.c:3030 __vmalloc_node mm/vmalloc.c:3080 [inline] vmalloc+0x75/0x80 mm/vmalloc.c:3113 bpf_prog_calc_tag+0xb4/0x6b0 kernel/bpf/core.c:281 resolve_pseudo_ldimm64+0xd4/0x1030 kernel/bpf/verifier.c:11831 bpf_check+0x30a4/0xf090 kernel/bpf/verifier.c:14121 bpf_prog_load+0x1043/0x1550 kernel/bpf/syscall.c:2348 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4651 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline] __se_sys_bpf kernel/bpf/syscall.c:4753 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f273ee66be9 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:00007f273d0ad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f273f08e090 RCX: 00007f273ee66be9 RDX: 0000000000000094 RSI: 0000200000000380 RDI: 0000000000000005 RBP: 00007f273eee9e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f273f08e128 R14: 00007f273f08e090 R15: 00007ffce14adb58