sched: DL replenish lagged too much
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5606/1:b..l.. P5620/1:b..l.. P5600/1:b..l..
rcu: (detected by 0, t=10502 jiffies, g=37345, q=1220735 ncpus=1)
task:syz-executor state:R running task stack:24040 pid:5600 tgid:5600 ppid:5595 task_flags:0x40050c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5584 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7387
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7566
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
zap_pte_range mm/memory.c:2058 [inline]
zap_pmd_range mm/memory.c:2114 [inline]
zap_pud_range mm/memory.c:2142 [inline]
zap_p4d_range mm/memory.c:2163 [inline]
__zap_vma_range+0x40e1/0x4f70 mm/memory.c:2203
unmap_vmas+0x38b/0x550 mm/memory.c:2272
exit_mmap+0x293/0x9f0 mm/mmap.c:1315
__mmput+0x118/0x420 kernel/fork.c:1192
exit_mm+0x18e/0x240 kernel/exit.c:586
do_exit+0x6a8/0x2380 kernel/exit.c:967
do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
get_signal+0x1216/0x12c0 kernel/signal.c:3112
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d49b59317
RSP: 002b:00007ffe2b48f0b0 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000555583074500 RCX: 00007f8d49b59317
RDX: 0000000040000000 RSI: 00007ffe2b48f10c RDI: ffffffffffffffff
RBP: 00007ffe2b48f10c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007ffe2b48f368 R15: 0000000000000000
task:udevd state:R running task stack:26216 pid:5620 tgid:5620 ppid:4978 task_flags:0x40014c flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5584 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7387
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7566
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
irq_work_queue+0xe3/0x150 kernel/irq_work.c:125
__rhashtable_remove_fast_one include/linux/rhashtable.h:1126 [inline]
__rhashtable_remove_fast include/linux/rhashtable.h:1150 [inline]
rhashtable_remove_fast include/linux/rhashtable.h:1179 [inline]
netlink_remove net/netlink/af_netlink.c:596 [inline]
netlink_release+0x1793/0x1a80 net/netlink/af_netlink.c:723
__sock_release+0xa0/0x1f0 net/socket.c:735
sock_close+0x1c/0x30 net/socket.c:1529
__fput+0x408/0xa40 fs/file_table.c:513
fput_close_sync+0x11f/0x240 fs/file_table.c:619
filp_close_sync+0x6e/0xa0 fs/open.c:1573
close_files fs/file.c:572 [inline]
put_files_struct+0x230/0x3c0 fs/file.c:584
do_exit+0x6f0/0x2380 kernel/exit.c:977
do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
__do_sys_exit_group kernel/exit.c:1134 [inline]
__se_sys_exit_group kernel/exit.c:1132 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1132
x64_sys_call+0x18c6/0x18d0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2c2ef16c5
RSP: 002b:00007ffcf388df58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000055b60b70b890 RCX: 00007fa2c2ef16c5
RDX: 00000000000000e7 RSI: fffffffffffffe68 RDI: 0000000000000000
RBP: 000055b60b701910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf388dfa0 R14: 0000000000000000 R15: 0000000000000000
task:syz-executor state:R running task stack:21992 pid:5606 tgid:5606 ppid:5603 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5584 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7387
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7667
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:524 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0x11df/0x2550 arch/x86/kernel/unwind_orc.c:670
Code: 89 3b 43 0f b6 44 25 00 84 c0 0f 85 29 11 00 00 49 8d 46 36 c6 00 00 49 8d 5e 50 4c 8b 6c 24 18 48 8b 44 24 30 42 0f b6 04 20 <84> c0 4c 8b 04 24 0f 85 46 0e 00 00 42 0f b6 44 25 00 84 c0 0f 85
RSP: 0018:ffffc9000422f240 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000422f338 RCX: 0000000000000000
RDX: ffffffff916526a0 RSI: 0000000000000000 RDI: ffffc9000422f348
RBP: 1ffffffff22ca4d4 R08: ffffc9000422f347 R09: 0000000000000000
R10: ffffc9000422f338 R11: fffff52000845e69 R12: dffffc0000000000
R13: ffffffff9165269c R14: ffffc9000422f2e8 R15: ffffc9000422f330
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:183
__reset_page_owner+0x73/0x2a0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1401 [inline]
__free_frozen_pages+0xc97/0xd90 mm/page_alloc.c:2952
__slab_free+0x269/0x2c0 mm/slub.c:5926
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
__do_kmalloc_node mm/slub.c:5530 [inline]
__kmalloc_noprof+0x302/0x710 mm/slub.c:5556
_kmalloc_noprof include/linux/slab.h:995 [inline]
tomoyo_realpath_from_path+0xef/0x640 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
security_inode_getattr+0x12b/0x310 security/security.c:1942
vfs_getattr+0x23/0x70 fs/stat.c:263
vfs_statx_path+0x2b/0x230 fs/stat.c:303
vfs_statx+0x12e/0x200 fs/stat.c:360
vfs_fstatat+0x11b/0x170 fs/stat.c:377
__do_sys_newfstatat fs/stat.c:542 [inline]
__se_sys_newfstatat+0x118/0x3a0 fs/stat.c:536
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f894299c7da
RSP: 002b:00007ffc36773f98 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007f8942a34d23 RCX: 00007f894299c7da
RDX: 00007ffc36773fc0 RSI: 00007ffc36774050 RDI: 00000000ffffff9c
RBP: 00007ffc36774050 R08: 00007ffc36775050 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffc367750e0
R13: 00007f8942a34d23 R14: 000000000001e2e1 R15: 00007ffc36775120
rcu: rcu_preempt kthread starved for 427 jiffies! g37345 f0x2 RCU_GP_WAIT_FQS(5) ->state=R ->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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5584 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7387
__schedule_loop kernel/sched/core.c:7464 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7479
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 3224 Comm: kworker/R-bat_e Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: bat_events batadv_dat_purge
RIP: 0010:nft_synproxy_do_eval+0x113/0x5d0 net/netfilter/nft_synproxy.c:116
Code: 00 00 43 c6 44 3d 0a 04 49 8d 5e 11 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 a5 03 00 00 0f b6 1b bf 06 00 00 00 89 de 48 6f 95 f7 83 fb 06 0f 85 cc 00 00 00 48 8d bc 24 80 00 00 00
RSP: 0018:ffffc90000007540 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006
RBP: ffffc90000007650 R08: ffffc900000075af R09: 0000000000000000
R10: ffffc900000075a0 R11: fffff52000000eb6 R12: ffffc90000007720
R13: 1ffff92000000eb0 R14: ffffc90000007900 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888124633000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557a052a38 CR3: 000000006fa48000 CR4: 00000000003526f0
Call Trace:
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_do_chain_ipv4+0x195/0x290 net/netfilter/nft_chain_filter.c:24
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:323
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6333 [inline]
__netif_receive_skb net/core/dev.c:6446 [inline]
process_backlog+0xa6b/0x18b0 net/core/dev.c:6797
__napi_poll+0xaa/0x330 net/core/dev.c:7866
napi_poll net/core/dev.c:7929 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8086
handle_softirqs+0x223/0x840 kernel/softirq.c:645
do_softirq+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
spin_unlock_bh include/linux/spinlock.h:407 [inline]
__batadv_dat_purge net/batman-adv/distributed-arp-table.c:252 [inline]
batadv_dat_purge+0x2d7/0x3c0 net/batman-adv/distributed-arp-table.c:271
process_one_work kernel/workqueue.c:3495 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
rescuer_thread+0x84a/0x12a0 kernel/workqueue.c:3803
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245