rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P3822 0-.... } 3537 jiffies s: 2633 root: 0x1/T rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3822 Comm: syz.2.43 Not tainted 6.1.103-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:67 Code: c1 0f 8c dc fc ff ff 48 89 df e8 28 4d a5 00 48 ba 00 00 00 00 00 fc ff df e9 c5 fc ff ff 66 0f 1f 84 00 00 00 00 00 48 8b 07 cc cc cc cc cc cc cc cc cc cc cc cc 31 c0 81 ff 03 00 00 40 0f RSP: 0018:ffffc900000075d8 EFLAGS: 00000287 RAX: ffffffff818aa0b3 RBX: ffffc900000076c8 RCX: 1ffff92000000ed8 RDX: 1ffffffff1f57c89 RSI: 0000000000000001 RDI: ffffc90004eaf008 RBP: ffffc900000076d0 R08: 0000000000000021 R09: ffffc900000077b0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000076c0 R13: 1ffff92000000eda R14: ffffc90004ea8000 R15: ffffc90004eb0000 FS: 00007f5f7020d6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbdc8288fa8 CR3: 000000005a11e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: deref_stack_regs arch/x86/kernel/unwind_orc.c:375 [inline] unwind_next_frame+0x164d/0x2220 arch/x86/kernel/unwind_orc.c:551 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:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc_node_track_caller+0xb1/0x220 mm/slab_common.c:975 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x135/0x670 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1271 [inline] wg_packet_send_keepalive+0x5f/0x290 drivers/net/wireguard/send.c:226 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x13/0x60 kernel/kcov.c:207 Code: 48 8b 3d 48 26 0f 0d 48 89 de 5b e9 37 a5 56 00 cc cc cc cc cc cc cc 48 8b 04 24 65 48 8b 0d 94 ce 77 7e 65 8b 15 95 ce 77 7e c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 RSP: 0018:ffffc90004eaf030 EFLAGS: 00000206 RAX: ffffffff817fe167 RBX: 000000000000000f RCX: ffff8880792d0000 RDX: 0000000080000002 RSI: 000000000000000f RDI: 00000000000000ff RBP: ffffffff8c5d9332 R08: ffffffff817fe15e R09: ffffc90004eaf240 R10: 0000000000000003 R11: ffff8880792d0000 R12: 00000000000000a4 R13: ffffc90004eaf240 R14: 00000000000000da R15: dffffc0000000000 get_symbol_offset kernel/kallsyms.c:140 [inline] kallsyms_lookup_buildid+0x197/0x6a0 kernel/kallsyms.c:415 __sprint_symbol+0x186/0x3c0 kernel/kallsyms.c:523 symbol_string+0x18d/0x3b0 lib/vsprintf.c:1000 pointer+0x7a2/0x1000 lib/vsprintf.c:2403 vsnprintf+0xdf8/0x1c70 lib/vsprintf.c:2809 snprintf+0xd6/0x120 lib/vsprintf.c:2940 bpf_bprintf_prepare+0xb6e/0x1450 kernel/bpf/helpers.c:894 ____bpf_snprintf kernel/bpf/helpers.c:1050 [inline] bpf_snprintf+0x15b/0x260 kernel/bpf/helpers.c:1034 bpf_prog_f2f741945f01d4c6+0x50/0x54 bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:596 [inline] bpf_prog_run include/linux/filter.h:610 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:627 [inline] bpf_flow_dissect+0x32a/0x3d0 net/core/flow_dissector.c:913 bpf_prog_test_run_flow_dissector+0x465/0x7e0 net/bpf/test_run.c:1487 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3685 __sys_bpf+0x3eb/0x6c0 kernel/bpf/syscall.c:5038 __do_sys_bpf kernel/bpf/syscall.c:5124 [inline] __se_sys_bpf kernel/bpf/syscall.c:5122 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5122 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f5f6f3779f9 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:00007f5f7020d048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f5f6f505f80 RCX: 00007f5f6f3779f9 RDX: 0000000000000050 RSI: 0000000020000640 RDI: 000000000000000a RBP: 00007f5f6f3e58ee R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f5f6f505f80 R15: 00007fff881d9198