rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11049/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=44337, q=928 ncpus=2)
task:syz.1.916 state:R running task stack:24128 pid:11049 tgid:11049 ppid:10797 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:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:396
Code: 8c e8 94 a3 66 0a 65 66 8b 05 34 21 a2 7e 66 85 c0 75 5d bf 01 00 00 00 e8 5d bd 0b 00 e8 18 73 45 00 fb 65 8b 05 f8 20 a2 7e <85> c0 75 05 e8 77 92 a8 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc9000c31fa00 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff92001863f44 RCX: ffffffff817b11ca
RDX: dffffc0000000000 RSI: ffffffff8c0a9760 RDI: ffffffff8c5f9780
RBP: ffffc9000c31fab8 R08: ffffffff9429f8bf R09: 1ffffffff2853f17
R10: dffffc0000000000 R11: fffffbfff2853f18 R12: dffffc0000000000
R13: 1ffff92001863f48 R14: ffffc9000c31fa40 R15: 0000000000000201
nl80211_netlink_notify+0x452/0x840 net/wireless/nl80211.c:20136
notifier_call_chain+0x1a7/0x3f0 kernel/notifier.c:85
blocking_notifier_call_chain+0x69/0x90 kernel/notifier.c:380
netlink_release+0x11a6/0x1bf0 net/netlink/af_netlink.c:764
__sock_release net/socket.c:640 [inline]
sock_close+0xbe/0x240 net/socket.c:1408
__fput+0x23e/0xa50 fs/file_table.c:450
task_work_run+0x251/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1355985d19
RSP: 002b:00007fffb1225d58 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f1355b77ba0 RCX: 00007f1355985d19
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f1355b77ba0 R08: 0000000000000000 R09: 00007fffb122604f
R10: 000000000003fd84 R11: 0000000000000246 R12: 000000000006c20d
R13: 00007f1355b76080 R14: 0000000000000032 R15: ffffffffffffffff
rcu: rcu_preempt kthread starved for 10408 jiffies! g44337 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: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+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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: 5899 Comm: kworker/1:5 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:unwind_next_frame+0x37/0x22d0 arch/x86/kernel/unwind_orc.c:470
Code: 53 48 81 ec 98 00 00 00 49 89 fd 49 bc 00 00 00 00 00 fc ff df 48 8d 5f 48 48 89 d8 48 c1 e8 03 48 89 44 24 30 42 80 3c 20 00 <74> 08 48 89 df e8 6f 26 ba 00 48 89 5c 24 18 4d 8b 75 48 49 8d 6d
RSP: 0018:ffffc90000a17ff0 EFLAGS: 00000046
RAX: 1ffff92000143021 RBX: ffffc90000a18108 RCX: ffffffff9178f000
RDX: dffffc0000000000 RSI: ffffffff818ced9a RDI: ffffc90000a180c0
RBP: ffffc90000a18150 R08: 0000000000000009 R09: ffffc90000a181b0
R10: dffffc0000000000 R11: ffffffff818b2450 R12: dffffc0000000000
R13: ffffc90000a180c0 R14: ffffc90000a181a0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3320f000 CR3: 000000006f55c000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4314
kmalloc_noprof include/linux/slab.h:901 [inline]
dummy_urb_enqueue+0x7d/0x780 drivers/usb/gadget/udc/dummy_hcd.c:1272
usb_hcd_submit_urb+0x36e/0x1e80 drivers/usb/core/hcd.c:1533
ath9k_hif_usb_rx_cb+0x11f7/0x1590 drivers/net/wireless/ath/ath9k/hif_usb.c:722
__usb_hcd_giveback_urb+0x42e/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x856/0x4620 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:neigh_periodic_work+0xbd2/0xde0 net/core/neighbour.c:969
Code: 20 fd ff ff 48 89 ef e8 ec c4 6c f8 e9 13 fd ff ff e8 22 64 06 f8 48 8b 5c 24 38 48 89 df e8 35 0e 32 02 48 c7 c7 80 16 0c 8d c9 03 00 00 31 d2 e8 72 27 d6 f7 2e 2e 2e 31 c0 48 89 df e8 a5
RSP: 0018:ffffc9000353fb38 EFLAGS: 00000246
RAX: b0162dc20eefef00 RBX: ffffffff8fdbd080 RCX: ffffffff817b11ca
RDX: dffffc0000000000 RSI: ffffffff8c0a9760 RDI: ffffffff8d0c1680
RBP: 0000000000000000 R08: ffffffff9429f94f R09: 1ffffffff2853f29
R10: dffffc0000000000 R11: fffffbfff2853f2a R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1102c167600
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
kworker/0:2: page allocation failure: order:0, mode:0x40820(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0-1
CPU: 0 UID: 0 PID: 968 Comm: kworker/0:2 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: wg-crypt-wg2 wg_packet_tx_worker
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
warn_alloc+0x278/0x410 mm/page_alloc.c:3548
__alloc_pages_slowpath+0xf37/0x1020 mm/page_alloc.c:4482
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
__alloc_pages_noprof+0x49b/0x710 mm/page_alloc.c:4764
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
alloc_slab_page+0x6a/0x110 mm/slub.c:2408
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
allocate_slab+0x1c0/0x2b0 mm/slub.c:2582
new_slab mm/slub.c:2627 [inline]
___slab_alloc+0xc27/0x14a0 mm/slub.c:3815
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
__slab_alloc+0x58/0xa0 mm/slub.c:3905
__slab_alloc_node mm/slub.c:3980 [inline]
slab_alloc_node mm/slub.c:4141 [inline]
__kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4309
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
kmalloc_noprof include/linux/slab.h:901 [inline]
dummy_urb_enqueue+0x7d/0x780 drivers/usb/gadget/udc/dummy_hcd.c:1272
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
usb_hcd_submit_urb+0x36e/0x1e80 drivers/usb/core/hcd.c:1533
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
ath9k_hif_usb_reg_in_cb+0x4ce/0x6e0 drivers/net/wireless/ath/ath9k/hif_usb.c:790
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
__usb_hcd_giveback_urb+0x42e/0x6e0 drivers/usb/core/hcd.c:1650
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
dummy_timer+0x856/0x4620 drivers/usb/gadget/udc/dummy_hcd.c:1993
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
node 1: slabs: 948634, objs: 15178144, free: 28
SLUB: Unable to allocate memory on CPU 1 (of node 0) on node -1, gfp=0x820(GFP_ATOMIC)
cache: kmalloc-128, object size: 128, buffer size: 256, default order: 0, min order: 0
node 0: slabs: 302004, objs: 4832064, free: 0
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1803
node 1: slabs: 948634, objs: 15178144, free: 28
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
do_softirq+0x11b/0x1e0 kernel/softirq.c:462
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
wg_socket_send_skb_to_peer+0x176/0x1d0 drivers/net/wireguard/socket.c:184
wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
wg_packet_tx_worker+0x1bf/0x810 drivers/net/wireguard/send.c:276
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Mem-Info:
active_anon:21043 inactive_anon:0 isolated_anon:0
active_file:17411 inactive_file:38623 isolated_file:0
unevictable:768 dirty:408 writeback:0
slab_reclaimable:11739 slab_unreclaimable:1364705
mapped:44125 shmem:15228 pagetables:1013
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:8863 free_pcp:4531 free_cma:0
Node 0 active_anon:84172kB inactive_anon:0kB active_file:69644kB inactive_file:154420kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:176500kB dirty:1628kB writeback:0kB shmem:59376kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB writeback_tmp:0kB kernel_stack:11728kB pagetables:4052kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:72kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:4kB writeback:0kB shmem:1536kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:9840kB boost:0kB min:208kB low:260kB high:312kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:248kB local_pcp:124kB free_cma:0kB
lowmem_reserve[]: 0 2465 2466 0 0
Node 0 DMA32 free:4944kB boost:76944kB min:111144kB low:119692kB high:128240kB reserved_highatomic:8192KB active_anon:84128kB inactive_anon:0kB active_file:69644kB inactive_file:153596kB unevictable:1536kB writepending:1628kB present:3129332kB managed:2552780kB mlocked:0kB bounce:0kB free_pcp:9388kB local_pcp:944kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 Normal free:0kB boost:0kB min:8kB low:8kB high:8kB reserved_highatomic:0KB active_anon:44kB inactive_anon:0kB active_file:0kB inactive_file:824kB unevictable:0kB writepending:0kB present:1048580kB managed:876kB mlocked:0kB bounce:0kB free_pcp:8kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:20668kB boost:0kB min:55688kB low:69608kB high:83528kB reserved_highatomic:10240KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:72kB unevictable:1536kB writepending:4kB present:4194300kB managed:4111164kB mlocked:0kB bounce:0kB free_pcp:8480kB local_pcp:7252kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 0*128kB 0*256kB 1*512kB (U) 1*1024kB (U) 2*2048kB (UM) 1*4096kB (M) = 9816kB
Node 0 DMA32: 1054*4kB (M) 0*8kB 0*16kB 0*32kB 0*64kB 1*128kB (H) 0*256kB 1*512kB (H) 0*1024kB 0*2048kB 0*4096kB = 4856kB
Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB
Node 1 Normal: 3*4kB (ME) 6*8kB (MEH) 10*16kB (MEH) 8*32kB (MEH) 7*64kB (ME) 6*128kB (MEH) 4*256kB (MEH) 5*512kB (MEH) 3*1024kB (MEH) 2*2048kB (UE) 2*4096kB (M) = 20636kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=1 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
71207 total pagecache pages
0 pages in swap cache
Free swap = 124720kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
427006 pages reserved
0 pages cma reserved