rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7136/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=13961, q=1043 ncpus=2)
task:syz.0.362 state:R running task stack:24608 pid:7136 tgid:7135 ppid:5841 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7012
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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5829
Code: 2b 00 74 08 4c 89 f7 e8 8a 56 8e 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90004807040 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000900e14 RCX: 41199a65254bf300
RDX: dffffc0000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c610960
RBP: ffffc90004807198 R08: ffffffff942cd807 R09: 1ffffffff2859b00
R10: dffffc0000000000 R11: fffffbfff2859b01 R12: 1ffff92000900e10
R13: dffffc0000000000 R14: ffffc900048070a0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
page_ext_get+0x3d/0x2a0 mm/page_ext.c:525
__set_page_owner+0x9e/0x800 mm/page_owner.c:322
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
prep_new_page mm/page_alloc.c:1545 [inline]
get_page_from_freelist+0x303f/0x3190 mm/page_alloc.c:3457
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
get_free_pages_noprof+0xc/0x30 mm/page_alloc.c:4780
kasan_populate_vmalloc_pte+0x38/0xe0 mm/kasan/shadow.c:304
apply_to_pte_range mm/memory.c:2817 [inline]
apply_to_pmd_range mm/memory.c:2861 [inline]
apply_to_pud_range mm/memory.c:2897 [inline]
apply_to_p4d_range mm/memory.c:2933 [inline]
__apply_to_page_range+0x806/0xde0 mm/memory.c:2967
alloc_vmap_area+0x1d52/0x2400 mm/vmalloc.c:2035
__get_vm_area_node+0x1a9/0x270 mm/vmalloc.c:3116
__vmalloc_node_range_noprof+0x3a6/0x13f0 mm/vmalloc.c:3788
__bpf_map_area_alloc kernel/bpf/syscall.c:307 [inline]
bpf_map_area_alloc+0xfc/0x120 kernel/bpf/syscall.c:314
sock_map_alloc+0x1b0/0x2c0 net/core/sock_map.c:57
map_create+0x946/0x11c0 kernel/bpf/syscall.c:1341
__sys_bpf+0x6d1/0x810 kernel/bpf/syscall.c:5635
__do_sys_bpf kernel/bpf/syscall.c:5760 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5758 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5758
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: 0033:0x7fc2a417e719
RSP: 002b:00007fc2a5024038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fc2a4335f80 RCX: 00007fc2a417e719
RDX: 0000000000000050 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007fc2a41f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc2a4335f80 R15: 00007ffccf0b0518
rcu: rcu_preempt kthread starved for 6713 jiffies! g13961 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:25880 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
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:
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc6-syzkaller-00166-g55d42a0c3f9c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5829
Code: 2b 00 74 08 4c 89 f7 e8 8a 56 8e 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900001e7720 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200003cef0 RCX: 8c32bb4f9b46c400
RDX: dffffc0000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c610960
RBP: ffffc900001e7868 R08: ffffffff942cd8d7 R09: 1ffffffff2859b1a
R10: dffffc0000000000 R11: fffffbfff2859b1b R12: 1ffff9200003ceec
R13: dffffc0000000000 R14: ffffc900001e7780 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f364a60c86c CR3: 00000000784da000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
process_backlog+0x824/0x15b0 net/core/dev.c:6122
__napi_poll+0xcb/0x490 net/core/dev.c:6779
napi_poll net/core/dev.c:6848 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6970
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
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