rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9028/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=50121, q=324 ncpus=2)
task:syz-executor state:R running task stack:20992 pid:9028 tgid:9028 ppid:9020 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/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]
copy_pte_range mm/memory.c:1191 [inline]
copy_pmd_range+0x7ad5/0x8500 mm/memory.c:1252
copy_pud_range mm/memory.c:1289 [inline]
copy_p4d_range mm/memory.c:1313 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1411
dup_mmap kernel/fork.c:749 [inline]
dup_mm kernel/fork.c:1672 [inline]
copy_mm+0x11ea/0x1f30 kernel/fork.c:1721
copy_process+0x187c/0x3e10 kernel/fork.c:2387
kernel_clone+0x223/0x880 kernel/fork.c:2800
__do_sys_clone kernel/fork.c:2943 [inline]
__se_sys_clone kernel/fork.c:2927 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2927
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5596d706d3
RSP: 002b:00007ffdc12470d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5596d706d3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555569ce87d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000920d7 R14: 0000000000091c74 R15: 00007ffdc1247260
rcu: rcu_preempt kthread timer wakeup didn't happen for 10425 jiffies! g50121 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=30807
rcu: rcu_preempt kthread starved for 10426 jiffies! g50121 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10673 Comm: syz.0.2112 Not tainted 6.11.0-rc3-syzkaller-00279-ge5fa841af679 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5497 [inline]
RIP: 0010:lock_is_held_type+0xb7/0x190 kernel/locking/lockdep.c:5831
Code: 89 eb 48 81 c3 e0 0a 00 00 31 ed 48 83 fd 31 73 24 48 89 df 4c 89 fe e8 67 02 00 00 85 c0 75 2a 48 ff c5 49 63 85 d8 0a 00 00 <48> 83 c3 28 48 39 c5 7c d8 eb 11 48 c7 c7 a0 51 60 8e 48 89 ee e8
RSP: 0018:ffffc90000a18d18 EFLAGS: 00000002
RAX: 0000000000000004 RBX: ffff888029fa0ae0 RCX: ffff888029fa0000
RDX: ffff888029fa0000 RSI: ffff8880b932c898 RDI: ffff888029fa0ae0
RBP: 0000000000000001 R08: ffffffff8180d0de R09: 0000000000000000
R10: ffff8880282cc340 R11: ffffed100505986b R12: 0000000000000046
R13: ffff888029fa0000 R14: 00000000ffffffff R15: ffff8880b932c898
FS: 00007f8950a8e6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3141cff8 CR3: 000000006ae16000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
__run_hrtimer kernel/time/hrtimer.c:1655 [inline]
__hrtimer_run_queues+0x2d9/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3055
Code: ff ff e8 06 c3 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 f8 c2 1f 00 e8 43 43 3a 0a 4d 85 f6 74 b6 e8 e9 c2 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31
RSP: 0018:ffffc9000947eb00 EFLAGS: 00000287
RAX: 1ffff9200128fdac RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9001b6d6000 RSI: 00000000000028c2 RDI: 00000000000028c3
RBP: ffffc9000947ecb0 R08: ffffffff8173c714 R09: 1ffffffff269e508
R10: dffffc0000000000 R11: fffffbfff269e509 R12: ffffffff8ef1fb18
R13: ffffffff8ef1fac0 R14: 0000000000000200 R15: dffffc0000000000
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348
_printk+0xd5/0x120 kernel/printk/printk.c:2373
validate_nla lib/nlattr.c:414 [inline]
__nla_validate_parse+0x1af9/0x3090 lib/nlattr.c:635
__nla_parse+0x40/0x60 lib/nlattr.c:732
nla_parse_nested_deprecated include/net/netlink.h:1339 [inline]
__rtnl_newlink net/core/rtnetlink.c:3630 [inline]
rtnl_newlink+0x79c/0x20a0 net/core/rtnetlink.c:3743
rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6647
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f894fd79e79
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:00007f8950a8e038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f894ff15f80 RCX: 00007f894fd79e79
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f894fde7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f894ff15f80 R15: 00007fff6e765f88
watchdog: BUG: soft lockup - CPU#0 stuck for 226s! [kworker/u8:2:35]
Modules linked in:
irq event stamp: 10345530
hardirqs last enabled at (10345529): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357
hardirqs last disabled at (10345530): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043
softirqs last enabled at (10345528): [] __do_softirq kernel/softirq.c:588 [inline]
softirqs last enabled at (10345528): [] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last enabled at (10345528): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
softirqs last disabled at (10345507): [] __do_softirq kernel/softirq.c:588 [inline]
softirqs last disabled at (10345507): [] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last disabled at (10345507): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
CPU: 0 UID: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.11.0-rc3-syzkaller-00279-ge5fa841af679 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:312 [inline]
RIP: 0010:smp_call_function_many_cond+0x1860/0x29d0 kernel/smp.c:856
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 19 15 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 c4 10 0c 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 a8 10
RSP: 0018:ffffc90000ab7700 EFLAGS: 00000293
RAX: ffffffff818779b8 RBX: 1ffff110172688f1 RCX: ffff88801badda00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000ab78e0 R08: ffffffff81877987 R09: 1ffffffff269e508
R10: dffffc0000000000 R11: fffffbfff269e509 R12: dffffc0000000000
R13: ffff8880b9344788 R14: ffff8880b923fb40 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31c1eff8 CR3: 000000000e534000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295
text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:833
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10673 Comm: syz.0.2112 Not tainted 6.11.0-rc3-syzkaller-00279-ge5fa841af679 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
RIP: 0010:_raw_spin_lock+0x16/0x40 kernel/locking/spinlock.c:154
Code: cc cc 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 48 89 fb bf 01 00 00 00 e8 8e e3 aa f5 48 8d 7b 18 <31> f6 31 d2 31 c9 41 b8 01 00 00 00 45 31 c9 ff 74 24 08 e8 12 b0
RSP: 0018:ffffc90000a18c80 EFLAGS: 00000002
RAX: 0000000000010002 RBX: ffff8880282cc2e8 RCX: ffffffff94cea903
RDX: 0000000000010000 RSI: 0000000000000000 RDI: ffff8880282cc300
RBP: dffffc0000000000 R08: ffffffff8180d35f R09: 1ffffffff1fed52d
R10: dffffc0000000000 R11: ffffffff89b4e260 R12: 0000000000000000
R13: ffffffff89b4e260 R14: ffff8880282cc340 R15: ffff888029fa0ac8
FS: 00007f8950a8e6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3141cff8 CR3: 000000006ae16000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_lock include/linux/spinlock.h:351 [inline]
advance_sched+0xab/0xca0 net/sched/sch_taprio.c:924
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3055
Code: ff ff e8 06 c3 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 f8 c2 1f 00 e8 43 43 3a 0a 4d 85 f6 74 b6 e8 e9 c2 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31
RSP: 0018:ffffc9000947eb00 EFLAGS: 00000287
RAX: 1ffff9200128fdac RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9001b6d6000 RSI: 00000000000028c2 RDI: 00000000000028c3
RBP: ffffc9000947ecb0 R08: ffffffff8173c714 R09: 1ffffffff269e508
R10: dffffc0000000000 R11: fffffbfff269e509 R12: ffffffff8ef1fb18
R13: ffffffff8ef1fac0 R14: 0000000000000200 R15: dffffc0000000000
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348
_printk+0xd5/0x120 kernel/printk/printk.c:2373
validate_nla lib/nlattr.c:414 [inline]
__nla_validate_parse+0x1af9/0x3090 lib/nlattr.c:635
__nla_parse+0x40/0x60 lib/nlattr.c:732
nla_parse_nested_deprecated include/net/netlink.h:1339 [inline]
__rtnl_newlink net/core/rtnetlink.c:3630 [inline]
rtnl_newlink+0x79c/0x20a0 net/core/rtnetlink.c:3743
rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6647
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f894fd79e79
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:00007f8950a8e038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f894ff15f80 RCX: 00007f894fd79e79
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f894fde7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f894ff15f80 R15: 00007fff6e765f88