rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5943/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=9197, q=1744012 ncpus=2)
task:syz-executor state:R running task stack:19928 pid:5943 tgid:5943 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7080
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:bytes_is_nonzero mm/kasan/generic.c:86 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x79/0x290 mm/kasan/generic.c:189
Code: 4d 89 c1 49 c1 e9 03 49 be 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 <4c> 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 0f 85 c9 01 00 00 49 ff c3
RSP: 0018:ffffc900033875f0 EFLAGS: 00000206
RAX: ffff8880308eda01 RBX: 1ffff92000670ed4 RCX: ffffffff816bb706
RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc900033876a0
RBP: 000000000000000c R08: ffffc900033876ff R09: 1ffff92000670edf
R10: dffffc0000000000 R11: fffff52000670ed4 R12: 0000000000000000
R13: ffffffff81aae620 R14: dffffc0000000001 R15: fffff52000670ee0
__asan_memset+0x23/0x50 mm/kasan/shadow.c:84
__unwind_start+0x36/0x740 arch/x86/kernel/unwind_orc.c:688
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe5/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660
discard_slab mm/slub.c:2684 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3153
put_cpu_partial+0x17c/0x250 mm/slub.c:3228
__slab_free+0x290/0x380 mm/slub.c:4479
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_kmalloc+0x23/0xb0 mm/kasan/common.c:385
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4294 [inline]
__kmalloc_noprof+0x285/0x4c0 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
lsm_blob_alloc security/security.c:684 [inline]
lsm_sock_alloc security/security.c:4841 [inline]
security_sk_alloc+0x53/0x360 security/security.c:4857
sk_prot_alloc+0xfa/0x210 net/core/sock.c:2181
sk_alloc+0x38/0x370 net/core/sock.c:2231
inet_create+0x648/0xea0 net/ipv4/af_inet.c:326
__sock_create+0x4c0/0xa30 net/socket.c:1569
sock_create net/socket.c:1627 [inline]
__sys_socket_create net/socket.c:1664 [inline]
__sys_socket+0x150/0x3c0 net/socket.c:1711
__do_sys_socket net/socket.c:1725 [inline]
__se_sys_socket net/socket.c:1723 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1723
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: 0033:0x7eff49387c47
RSP: 002b:00007ffd08edc3b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007eff49387c47
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007ffd08edcadc R08: 00007ffd08edc40c R09: 00007ffd08edc7f7
R10: 00007ffd08edc460 R11: 0000000000000206 R12: 00007eff49548e40
R13: 0000000000024353 R14: 00007ffd08edcb30 R15: 00007eff4954b000
rcu: rcu_preempt kthread starved for 5324 jiffies! g9197 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:25624 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ipv4_conntrack_in+0x6/0x20 net/netfilter/nf_conntrack_proto.c:206
Code: ff ff ff 4c 89 f7 e8 f9 5a 1d f8 e9 4d ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 56 <53> 49 89 d6 48 89 f3 e8 8e de b6 f7 48 89 df 4c 89 f6 5b 41 5e e9
RSP: 0018:ffffc90000157508 EFLAGS: 00000246
RAX: 1ffff110055323c8 RBX: ffff88802a991e38 RCX: dffffc0000000000
RDX: ffffc900001575c0 RSI: ffff8881f0e8ca00 RDI: 0000000000000000
RBP: ffffffff8a084580 R08: 0000000000000001 R09: ffffffff8a03eba7
R10: 0000000000000004 R11: ffffffff8a084580 R12: ffffc900001575c0
R13: 0000000000000003 R14: ffff88802a991e40 R15: 1ffff110055323c0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42bc1ffffc CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5672 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5785
process_backlog+0x662/0x15b0 net/core/dev.c:6117
__napi_poll+0xcb/0x490 net/core/dev.c:6883
napi_poll net/core/dev.c:6952 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7074
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244