sl0: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 21100 ms
sl0: transmit timed out, driver error?
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=a744/1/0x4000000000000000 softirq=100085/100086 fqs=2
rcu: (detected by 0, t=10502 jiffies, g=81265, q=721 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 19133 Comm: syz.7.3034 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x11/0x90 kernel/kcov.c:314
Code: 09 cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 14 25 08 90 9c 92 <65> 8b 0d 28 66 dc 10 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75
RSP: 0018:ffffc90000a08c68 EFLAGS: 00000046
RAX: ffffffff89863f8d RBX: 0000000000000001 RCX: ffff888026d7da00
RDX: ffff888026d7da00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200014117c R12: ffff88802a466340
R13: ffff88802a466000 R14: dffffc0000000000 R15: ffff88805187a400
FS: 0000000000000000(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d41fffc CR3: 000000000df38000 CR4: 00000000003526f0
Call Trace:
advance_sched+0x14d/0xc90 net/sched/sch_taprio.c:927
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825
hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
__sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:ptep_get include/linux/pgtable.h:340 [inline]
RIP: 0010:do_zap_pte_range mm/memory.c:1672 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1735 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1827 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1856 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1877 [inline]
RIP: 0010:unmap_page_range+0xcae/0x41c0 mm/memory.c:1898
Code: 18 48 89 de 48 83 e6 08 31 ff e8 1d bb b9 ff 48 83 e3 08 0f 85 3f 27 00 00 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 58 9d 19 00 4c 8b 3b 4c 89 7c 24 30 4d 29 f4 49
RSP: 0018:ffffc9000e6d75e0 EFLAGS: 00000246
RAX: 1ffff1100bd11129 RBX: ffff88805e888948 RCX: ffff888026d7da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000e6d7890 R08: ffffea0001d2b8f3 R09: 1ffffd40003a571e
R10: dffffc0000000000 R11: fffff940003a571f R12: 000000110c400000
R13: dffffc0000000000 R14: 000000110c329000 R15: ffffea0001d2b8f0
unmap_single_vma mm/memory.c:1941 [inline]
unmap_vmas+0x399/0x580 mm/memory.c:1985
exit_mmap+0x248/0xb50 mm/mmap.c:1284
__mmput+0x118/0x410 kernel/fork.c:1121
exit_mm+0x1da/0x2c0 kernel/exit.c:581
do_exit+0x648/0x22e0 kernel/exit.c:952
do_group_exit+0x21c/0x2d0 kernel/exit.c:1105
__do_sys_exit_group kernel/exit.c:1116 [inline]
__se_sys_exit_group kernel/exit.c:1114 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1114
x64_sys_call+0x21ba/0x21c0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43f3f8e9a9
Code: Unable to access opcode bytes at 0x7f43f3f8e97f.
RSP: 002b:00007ffd42827738 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f43f3f8e9a9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd4282779c R08: 000000024282782f R09: 00005555942ad590
R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000000a9
R13: 00005555942ad590 R14: 000000000015fa27 R15: 00007ffd428277f0
rcu: rcu_preempt kthread starved for 10498 jiffies! g81265 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:26888 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5397 [inline]
__schedule+0x16aa/0x4c90 kernel/sched/core.c:6786
__schedule_loop kernel/sched/core.c:6864 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6879
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 5501 Comm: dhcpcd Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0xf69/0x12d0 kernel/smp.c:885
Code: 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 80 6e 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 2b 6a 0b 00 eb 37 f3 90 <43> 0f b6 04 2c 84 c0 75 10 41 f7 07 01 00 00 00 74 1e e8 10 6a 0b
RSP: 0018:ffffc90003a6f580 EFLAGS: 00000293
RAX: ffffffff81b4bba0 RBX: ffff8880b863b040 RCX: ffff88802fd29e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003a6f6e0 R08: ffffffff8fa0b2f7 R09: 1ffffffff1f4165e
R10: dffffc0000000000 R11: fffffbfff1f4165f R12: 1ffff110170e7f2d
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b873f968
FS: 00007fe6b43ff740(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c28d33e CR3: 000000007eff0000 CR4: 00000000003526f0
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
flush_tlb_mm_range+0x6b1/0x12c0 arch/x86/mm/tlb.c:1451
dup_mmap+0x15a0/0x1ac0 mm/mmap.c:1877
dup_mm kernel/fork.c:1477 [inline]
copy_mm+0x13c/0x4b0 kernel/fork.c:1529
copy_process+0x16d3/0x3b80 kernel/fork.c:2169
kernel_clone+0x224/0x7f0 kernel/fork.c:2599
__do_sys_clone kernel/fork.c:2742 [inline]
__se_sys_clone kernel/fork.c:2726 [inline]
__x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2726
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe6b44d3636
Code: 89 df e8 6d e8 f6 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 52 89 c5 85 c0 75 31 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffeab6be800 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffeab6be808 RCX: 00007fe6b44d3636
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffeab6ded50 R08: 0000000000000000 R09: 0000000000000001
R10: 00007fe6b43ffa10 R11: 0000000000000246 R12: 00007ffeab6be940
R13: 0000000000000000 R14: 0000000000000000 R15: 000055bb40aafac0