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): P5212/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=12437, q=1890167 ncpus=2)
task:syz-executor state:R running task stack:20112 pid:5212 tgid:5212 ppid:5210 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6674
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6996
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:unwind_get_return_address+0x4f/0x90 arch/x86/kernel/unwind_orc.c:369
Code: 4b 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 74 08 48 89 df e8 8b 48 bd 00 48 8b 3b e8 03 73 1e 00 85 c0 <74> 14 43 80 3c 37 00 74 08 48 89 df e8 70 48 bd 00 48 8b 03 eb 02
RSP: 0018:ffffc9000350f620 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc9000350f688 RCX: ffffffff917ac000
RDX: ffffffff91959501 RSI: ffffc90003508000 RDI: ffffffff81ef839b
RBP: ffffc9000350f6d0 R08: ffffc9000350f978 R09: ffffc9000350f690
R10: dffffc0000000000 R11: fffff520006a1ed4 R12: ffff888028798000
R13: ffffffff81806cf0 R14: dffffc0000000000 R15: 1ffff920006a1ed1
arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
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:1108 [inline]
free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
discard_slab mm/slub.c:2678 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3146
put_cpu_partial+0x17c/0x250 mm/slub.c:3221
__slab_free+0x2ea/0x3d0 mm/slub.c:4450
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:247 [inline]
slab_post_alloc_hook mm/slub.c:4086 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4154
__d_alloc+0x31/0x700 fs/dcache.c:1636
d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1768
alloc_path_pseudo fs/file_table.c:337 [inline]
alloc_file_pseudo+0x123/0x290 fs/file_table.c:353
create_pipe_files+0x33e/0x700 fs/pipe.c:938
__do_pipe_flags+0x48/0x2d0 fs/pipe.c:973
do_pipe2+0xd4/0x310 fs/pipe.c:1024
__do_sys_pipe2 fs/pipe.c:1042 [inline]
__se_sys_pipe2 fs/pipe.c:1040 [inline]
__x64_sys_pipe2+0x5a/0x70 fs/pipe.c:1040
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: 0033:0x7f998a77cc49
RSP: 002b:00007ffc18c8a238 EFLAGS: 00000246 ORIG_RAX: 0000000000000125
RAX: ffffffffffffffda RBX: 00005555860efad0 RCX: 00007f998a77cc49
RDX: 00005550d3574e37 RSI: 0000000000000000 RDI: 00007ffc18c8a258
RBP: 00007ffc18c8a7f0 R08: 0000000000000007 R09: 00005555860f7bc0
R10: 0e3970091a0c7192 R11: 0000000000000246 R12: 00007ffc18c8a640
R13: 00005555860ef650 R14: 00007ffc18c8a380 R15: 00005555860f1180
rcu: rcu_preempt kthread starved for 9499 jiffies! g12437 f0x2 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:24464 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6674
__schedule_loop kernel/sched/core.c:6751 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6766
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+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: 2852 Comm: kworker/R-bat_e Not tainted 6.11.0-syzkaller-08833-gde5cb0dcb74c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:lock_acquire+0x28d/0x550 kernel/locking/lockdep.c:5826
Code: 45 4b c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 11 00 00 00 00 66 43 c7 44 25 15 00 00 43 c6 44 25 17 00 <65> 48 8b 04 25 28 00 00 00 48 3b 84 24 00 01 00 00 0f 85 95 02 00
RSP: 0018:ffffc90000a18920 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000143130 RCX: c4c75964ce957f00
RDX: dffffc0000000000 RSI: ffffffff8c0adbc0 RDI: ffffffff8c60ddc0
RBP: ffffc90000a18a68 R08: ffffffff9425983f R09: 1ffffffff284b307
R10: dffffc0000000000 R11: fffffbfff284b308 R12: 1ffff9200014312c
R13: dffffc0000000000 R14: ffffc90000a18980 R15: 0000000000000046
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555760265c8 CR3: 000000007f5f8000 CR4: 0000000000350ef0
Call Trace:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236
mISDN_clock_get+0x18/0x60 drivers/isdn/mISDN/clock.c:187
dsp_cmx_send+0x3a/0x2240
call_timer_fn+0x190/0x650 kernel/time/timer.c:1794
expire_timers kernel/time/timer.c:1845 [inline]
__run_timers kernel/time/timer.c:2419 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
run_timer_base kernel/time/timer.c:2439 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
handle_softirqs+0x2c7/0x980 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2299 [inline]
batadv_tt_purge+0x4e3/0xa40 net/batman-adv/translation-table.c:3561
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
rescuer_thread+0x63f/0x10a0 kernel/workqueue.c:3487
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