rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6029/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=9301, q=2803946 ncpus=2)
task:syz.0.20 state:R running task stack:24592 pid:6029 tgid:6028 ppid:5920 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__reset_page_owner+0x68/0x430
Code: 00 00 00 00 00 fc ff df 48 8b 05 13 db 91 0c 49 8d 5c 07 08 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 8d 03 00 00 8b 03 <89> 44 24 20 bf 00 28 00 00 e8 ca 03 00 00 41 89 c6 65 48 8b 04 25
RSP: 0018:ffffc90004056ec0 EFLAGS: 00000246
RAX: 00000000057402cc RBX: ffff88801e023e20 RCX: ffff888030480000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8216fb7a R09: 1ffffffff2851510
R10: dffffc0000000000 R11: fffffbfff2851511 R12: ffffea000181cb48
R13: dffffc0000000000 R14: ffffea000181cb40 R15: ffff88801e023e10
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0xdf9/0x1140 mm/page_alloc.c:2693
discard_slab mm/slub.c:2673 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3142
put_cpu_partial+0x17c/0x250 mm/slub.c:3217
__slab_free+0x2ea/0x3d0 mm/slub.c:4468
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4104 [inline]
slab_alloc_node mm/slub.c:4153 [inline]
kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4205
kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:587
__alloc_skb+0x1f3/0x440 net/core/skbuff.c:678
alloc_skb include/linux/skbuff.h:1323 [inline]
nlmsg_new include/net/netlink.h:1018 [inline]
netlink_ack+0x13f/0xa30 net/netlink/af_netlink.c:2478
nfnl_err_deliver net/netfilter/nfnetlink.c:359 [inline]
nfnetlink_rcv_batch net/netfilter/nfnetlink.c:603 [inline]
nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:647 [inline]
nfnetlink_rcv+0x26bd/0x2ab0 net/netfilter/nfnetlink.c:665
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1891
sock_sendmsg_nosec net/socket.c:711 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:726
____sys_sendmsg+0x52a/0x7e0 net/socket.c:2583
___sys_sendmsg net/socket.c:2637 [inline]
__sys_sendmsg+0x269/0x350 net/socket.c:2669
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: 0033:0x7f5a2d37e819
RSP: 002b:00007f5a2e126038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5a2d535fa0 RCX: 00007f5a2d37e819
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f5a2d3f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5a2d535fa0 R15: 00007ffe354f5448
rcu: rcu_preempt kthread starved for 8252 jiffies! g9301 f0x2 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:26072 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 3450 Comm: kworker/u8:7 Not tainted 6.12.0-next-20241122-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:asm_exc_int3+0x0/0x40 arch/x86/include/asm/idtentry.h:622
Code: e9 e5 08 00 00 0f 1f 44 00 00 f3 0f 1e fa 0f 01 ca fc 6a ff e8 91 07 00 00 48 89 c4 48 89 e7 e8 26 eb e7 ff e9 c1 08 00 00 90 0f 1e fa 0f 01 ca fc 6a ff f6 44 24 10 03 75 18 ff 74 24 28 ff
RSP: 0018:ffffc90000006ce8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000028 RDI: ffffffff8ea4f860
RBP: ffffffff84c6ef50 R08: 00000000ffffffff R09: 0000000000000000
R10: ffff8881e654c8f8 R11: ffffffff818b3690 R12: ffff8881e654c8c8
R13: 00000000fffffff3 R14: 0000000000002120 R15: ffff88801ac4f8c0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f155281f5b0 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:kfence_alloc include/linux/kfence.h:121 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:4137 [inline]
RIP: 0010:kmem_cache_alloc_noprof+0x84/0x380 mm/slub.c:4160
Code: 00 00 e8 2f 0c 71 ff 2e 2e 2e 31 c0 4c 89 ff 89 de e8 10 d1 0c 00 31 db 4d 85 ff 0f 84 97 01 00 00 85 c0 0f 85 8f 01 00 00 cc <1f> 44 00 00 48 c7 44 24 08 00 00 00 00 41 b8 ff ff ff ff 65 48 8b
RSP: 0018:ffffc90000006d10 EFLAGS: 00000246