rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 ticks this GP) idle=63cc/1/0x4000000000000000 softirq=144293/144293 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19377/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=126133, q=742 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 19381 Comm: syz.2.3552 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:107 [inline]
RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
RIP: 0010:do_raw_spin_lock+0x13d/0x2b0 kernel/locking/spinlock_debug.c:116
Code: 28 00 00 00 00 e8 93 3d 8a 00 be 04 00 00 00 48 8d 7c 24 28 e8 84 3d 8a 00 8b 44 24 28 ba 01 00 00 00 89 44 24 04 f0 0f b1 13 <0f> 85 94 00 00 00 65 44 8b 35 29 19 34 12 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000007cf8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880616b02e8 RCX: ffffffff8198c6ec
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007d20
RBP: 1ffff92000000fa0 R08: 0000000000000001 R09: fffff52000000fa4
R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880616b02f0
R13: ffff8880616b02f8 R14: ffff8880616b0340 R15: ffffffff89937240
FS: 00007f2aeef966c0(0000) GS:ffff888124752000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd2af6ea6b0 CR3: 0000000058fe4000 CR4: 00000000003526f0
Call Trace:
spin_lock include/linux/spinlock.h:351 [inline]
advance_sched+0xd9/0xc80 net/sched/sch_taprio.c:924
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x1ff/0xad0 kernel/time/hrtimer.c:1825
hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
__sysvec_apic_timer_interrupt+0x108/0x3f0 arch/x86/kernel/apic/apic.c:1056
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a2/0xc60 kernel/printk/printk.c:3227
Code: 00 e8 72 9e 28 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 20 c9 20 00 48 85 db 0f 85 55 01 00 00 e8 a2 cd 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 87 a9 87
RSP: 0018:ffffc900056171e0 EFLAGS: 00000283
RAX: ffffffff8f2eb398 RBX: 0000000000000000 RCX: ffffc9000bdb9000
RDX: 0000000000080000 RSI: ffffffff819b52fe RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8f2eb398
R13: ffffffff8f2eb340 R14: ffffc90005617270 R15: dffffc0000000000
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
xt_ct_set_helper net/netfilter/xt_CT.c:89 [inline]
xt_ct_tg_check+0xcb8/0xe00 net/netfilter/xt_CT.c:203
xt_ct_tg_check_v0+0x1a5/0x280 net/netfilter/xt_CT.c:250
xt_check_target+0x279/0xa40 net/netfilter/x_tables.c:1038
check_target net/ipv4/netfilter/ip_tables.c:510 [inline]
find_check_entry.constprop.0+0x7be/0x9b0 net/ipv4/netfilter/ip_tables.c:552
translate_table+0xc98/0x1720 net/ipv4/netfilter/ip_tables.c:716
do_replace net/ipv4/netfilter/ip_tables.c:1137 [inline]
do_ipt_set_ctl+0x570/0xae0 net/ipv4/netfilter/ip_tables.c:1635
nf_setsockopt+0x8d/0xf0 net/netfilter/nf_sockopt.c:101
ip_setsockopt+0xcb/0xf0 net/ipv4/ip_sockglue.c:1424
ipv6_setsockopt+0x155/0x170 net/ipv6/ipv6_sockglue.c:988
tcp_setsockopt+0xa7/0x100 net/ipv4/tcp.c:4108
do_sock_setsockopt+0x221/0x470 net/socket.c:2296
__sys_setsockopt+0x1a0/0x230 net/socket.c:2321
__do_sys_setsockopt net/socket.c:2327 [inline]
__se_sys_setsockopt net/socket.c:2324 [inline]
__x64_sys_setsockopt+0xbd/0x160 net/socket.c:2324
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2aee18e929
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:00007f2aeef96038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f2aee3b5fa0 RCX: 00007f2aee18e929
RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000006
RBP: 00007f2aee210b39 R08: 00000000000004a0 R09: 0000000000000000
R10: 0000200000000ec0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2aee3b5fa0 R15: 00007fffdf809fd8
task:syz.5.3551 state:R running task stack:27672 pid:19377 tgid:19374 ppid:13286 task_flags:0x40044c flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6965
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1765 [inline]
zap_pmd_range mm/memory.c:1827 [inline]
zap_pud_range mm/memory.c:1856 [inline]
zap_p4d_range mm/memory.c:1877 [inline]
unmap_page_range+0x106b/0x4350 mm/memory.c:1898
unmap_single_vma.constprop.0+0x153/0x240 mm/memory.c:1941
unmap_vmas+0x218/0x470 mm/memory.c:1985
exit_mmap+0x1b9/0xb90 mm/mmap.c:1284
__mmput+0x12a/0x410 kernel/fork.c:1121
mmput+0x62/0x70 kernel/fork.c:1144
exit_mm kernel/exit.c:581 [inline]
do_exit+0x7c4/0x2bd0 kernel/exit.c:952
do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
get_signal+0x2673/0x26d0 kernel/signal.c:3034
arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x84/0x110 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x3f6/0x4c0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18c098e929
RSP: 002b:00007f18c17ec0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f18c0bb6168 RCX: 00007f18c098e929
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f18c0bb6168
RBP: 00007f18c0bb6160 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f18c0bb616c
R13: 0000000000000000 R14: 00007ffdee686080 R15: 00007ffdee686168
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g126133 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=88612
rcu: rcu_preempt kthread starved for 10502 jiffies! g126133 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27464 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6878
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2256
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
watchdog: BUG: soft lockup - CPU#1 stuck for 245s! [syz.2.3552:19384]
Modules linked in:
irq event stamp: 873944
hardirqs last enabled at (873943): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:310
hardirqs last disabled at (873944): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050
softirqs last enabled at (873942): [] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last enabled at (873942): [] handle_softirqs+0x5be/0x8e0 kernel/softirq.c:607
softirqs last disabled at (873911): [] __do_softirq kernel/softirq.c:613 [inline]
softirqs last disabled at (873911): [] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last disabled at (873911): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
CPU: 1 UID: 0 PID: 19384 Comm: syz.2.3552 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #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+0xd7b/0x1510 kernel/smp.c:885
Code: e8 2a 1a 0c 00 45 85 ed 74 46 48 8b 14 24 49 89 d6 49 89 d5 49 c1 ee 03 41 83 e5 07 4d 01 e6 41 83 c5 03 e8 c7 1e 0c 00 f3 90 <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 6f 05 00 00 8b 43 08 31 ff
RSP: 0018:ffffc900054a7690 EFLAGS: 00000246
RAX: 0000000000080000 RBX: ffff8880b84421e0 RCX: ffffc9000d88e000
RDX: 0000000000080000 RSI: ffffffff81b001d9 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000003 R14: ffffed101708843d R15: ffff8880b853b580
FS: 00007f2aeef756c0(0000) GS:ffff888124852000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c41e0c6 CR3: 0000000058fe4000 CR4: 00000000003526f0
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
on_each_cpu include/linux/smp.h:71 [inline]
smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2691 [inline]
smp_text_poke_batch_finish+0x27b/0xdb0 arch/x86/kernel/alternative.c:2901
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x376/0x550 kernel/jump_label.c:919
static_key_slow_inc_cpuslocked kernel/jump_label.c:168 [inline]
static_key_slow_inc_cpuslocked+0x82/0x120 kernel/jump_label.c:151
static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:191
kvm_create_lapic+0x37b/0x4d0 arch/x86/kvm/lapic.c:2914
kvm_arch_vcpu_create+0x283/0xb20 arch/x86/kvm/x86.c:12348
kvm_vm_ioctl_create_vcpu virt/kvm/kvm_main.c:4192 [inline]
kvm_vm_ioctl+0xf57/0x3da0 virt/kvm/kvm_main.c:5138
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2aee18e929
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:00007f2aeef75038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2aee3b6080 RCX: 00007f2aee18e929
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000008
RBP: 00007f2aee210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2aee3b6080 R15: 00007fffdf809fd8
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 19381 Comm: syz.2.3552 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rb_insert_color_cached include/linux/rbtree.h:113 [inline]
RIP: 0010:rb_add_cached include/linux/rbtree.h:183 [inline]
RIP: 0010:timerqueue_add+0x255/0x330 lib/timerqueue.c:40
Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 92 00 00 00 48 8b 04 24 48 c7 45 10 00 00 00 00 48 89 28 d6 24 3f f6 48 8b 04 24 48 8d 78 08 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90000007e00 EFLAGS: 00000046
RAX: ffff8880b8427dd0 RBX: 0000000000000000 RCX: ffffffff8b7cf9b8
RDX: 1ffff1100c2d606a RSI: ffffffff8b7cfb4d RDI: ffff8880616b0350
RBP: ffff8880616b0340 R08: 0000000000000006 R09: ffff8880616b0340
R10: ffff8880616b0340 R11: ffffffff9af99228 R12: ffff8880b8427c80
R13: 0000000000000000 R14: ffff8880616b0340 R15: 0000000000000001
FS: 00007f2aeef966c0(0000) GS:ffff888124752000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd2af6ea6b0 CR3: 0000000058fe4000 CR4: 00000000003526f0
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1778 [inline]
__hrtimer_run_queues+0x8ff/0xad0 kernel/time/hrtimer.c:1825
hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
__sysvec_apic_timer_interrupt+0x108/0x3f0 arch/x86/kernel/apic/apic.c:1056
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a2/0xc60 kernel/printk/printk.c:3227
Code: 00 e8 72 9e 28 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 20 c9 20 00 48 85 db 0f 85 55 01 00 00 e8 a2 cd 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 87 a9 87
RSP: 0018:ffffc900056171e0 EFLAGS: 00000283
RAX: ffffffff8f2eb398 RBX: 0000000000000000 RCX: ffffc9000bdb9000
RDX: 0000000000080000 RSI: ffffffff819b52fe RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8f2eb398
R13: ffffffff8f2eb340 R14: ffffc90005617270 R15: dffffc0000000000
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
xt_ct_set_helper net/netfilter/xt_CT.c:89 [inline]
xt_ct_tg_check+0xcb8/0xe00 net/netfilter/xt_CT.c:203
xt_ct_tg_check_v0+0x1a5/0x280 net/netfilter/xt_CT.c:250
xt_check_target+0x279/0xa40 net/netfilter/x_tables.c:1038
check_target net/ipv4/netfilter/ip_tables.c:510 [inline]
find_check_entry.constprop.0+0x7be/0x9b0 net/ipv4/netfilter/ip_tables.c:552
translate_table+0xc98/0x1720 net/ipv4/netfilter/ip_tables.c:716
do_replace net/ipv4/netfilter/ip_tables.c:1137 [inline]
do_ipt_set_ctl+0x570/0xae0 net/ipv4/netfilter/ip_tables.c:1635
nf_setsockopt+0x8d/0xf0 net/netfilter/nf_sockopt.c:101
ip_setsockopt+0xcb/0xf0 net/ipv4/ip_sockglue.c:1424
ipv6_setsockopt+0x155/0x170 net/ipv6/ipv6_sockglue.c:988
tcp_setsockopt+0xa7/0x100 net/ipv4/tcp.c:4108
do_sock_setsockopt+0x221/0x470 net/socket.c:2296
__sys_setsockopt+0x1a0/0x230 net/socket.c:2321
__do_sys_setsockopt net/socket.c:2327 [inline]
__se_sys_setsockopt net/socket.c:2324 [inline]
__x64_sys_setsockopt+0xbd/0x160 net/socket.c:2324
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2aee18e929
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:00007f2aeef96038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f2aee3b5fa0 RCX: 00007f2aee18e929
RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000006
RBP: 00007f2aee210b39 R08: 00000000000004a0 R09: 0000000000000000
R10: 0000200000000ec0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2aee3b5fa0 R15: 00007fffdf809fd8