icmp: detected local route for 10.128.0.121 during ICMP sending, src 10.128.0.163 icmp: detected local route for 10.128.0.121 during ICMP sending, src 10.128.0.163 icmp: detected local route for 10.128.0.121 during ICMP sending, src 10.128.0.163 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P32646/1:b..l rcu: (detected by 0, t=10504 jiffies, g=214265, q=315 ncpus=2) task:dhcpcd-run-hook state:R running task stack:24968 pid:32646 ppid:5434 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0x1553/0x45a0 kernel/sched/core.c:6700 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010 irqentry_exit+0x67/0x70 kernel/entry/common.c:438 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:lock_is_held_type+0x20/0x190 kernel/locking/lockdep.c:5810 Code: bf e8 84 fc ff ff 0f 1f 40 00 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 ff ff ff ff 83 3d e0 e0 04 04 00 0f 84 03 01 00 00 65 8b 05 4f RSP: 0018:ffffc90004d67738 EFLAGS: 00000282 RAX: de9324b0098a7200 RBX: ffff888050877300 RCX: ffff888065913c00 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff888056d84420 RBP: ffffc90004d67930 R08: ffff888065913c00 R09: 0000000000000003 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88805a181e80 R14: ffff888056d84420 R15: 0000000000000300 lock_is_held include/linux/lockdep.h:288 [inline] mt_locked lib/maple_tree.c:-1 [inline] mt_slot lib/maple_tree.c:814 [inline] mas_slot lib/maple_tree.c:847 [inline] mt_validate_nulls lib/maple_tree.c:7183 [inline] mt_validate+0x3dfb/0x4400 lib/maple_tree.c:7237 validate_mm+0xc6/0x450 mm/mmap.c:288 mmap_region+0xe8d/0x2000 mm/mmap.c:2947 do_mmap+0x92c/0x10a0 mm/mmap.c:1385 vm_mmap_pgoff+0x1c4/0x3f0 mm/util.c:556 ksys_mmap_pgoff+0x520/0x700 mm/mmap.c:1431 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7494d44242 RSP: 002b:00007fffb9577ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7494d44242 RDX: 0000000000000001 RSI: 00000000001dfe98 RDI: 0000000000000000 RBP: 0000000000000802 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000802 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7494d205f0 R14: 00007fffb9578700 R15: 00000ffff72aefdc rcu: rcu_preempt kthread starved for 10497 jiffies! g214265 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:27496 pid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0x1553/0x45a0 kernel/sched/core.c:6700 schedule+0xbd/0x170 kernel/sched/core.c:6774 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168 rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 rcu: Stack dump where RCU GP kthread last ran: CPU: 0 PID: 32650 Comm: syz.5.6284 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:__sanitizer_cov_trace_pc+0x49/0x60 kernel/kcov.c:222 Code: 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 <8b> 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 c3 0f 1f RSP: 0018:ffffc90004e4fa78 EFLAGS: 00000246 RAX: ffffffff817c3166 RBX: 1ffff110171e826d RCX: ffff888027499e00 RDX: ffffc900150b1000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc90004e4fbf0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335 R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff8880b8f41368 R13: dffffc0000000000 R14: ffff8880b8e3d148 R15: 0000000000000001 FS: 00007fd5f2db46c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa1cff8 CR3: 000000006ad21000 CR4: 00000000003506f0 Call Trace: csd_lock_wait kernel/smp.c:311 [inline] smp_call_function_many_cond+0xe16/0x1140 kernel/smp.c:855 clock_was_set+0x71f/0x7d0 kernel/time/hrtimer.c:997 do_settimeofday64+0x5ba/0x760 kernel/time/timekeeping.c:1345 __do_sys_clock_settime kernel/time/posix-timers.c:1130 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1114 [inline] __x64_sys_clock_settime+0x25e/0x2a0 kernel/time/posix-timers.c:1114 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd5f4b9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd5f2db4028 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007fd5f4e16180 RCX: 00007fd5f4b9ce59 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000 RBP: 00007fd5f4c32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd5f4e16218 R14: 00007fd5f4e16180 R15: 00007ffeefc47fe8