sched: DL replenish lagged too much
=============================
[ BUG: Invalid wait context ]
6.13.0-syzkaller-g57e71f8c8923 #0 Not tainted
-----------------------------
syz.2.50/6094 is trying to lock:
ffffffff8ea70118 (stack_list_lock){-.-.}-{3:3}, at: add_stack_record_to_list mm/page_owner.c:182 [inline]
ffffffff8ea70118 (stack_list_lock){-.-.}-{3:3}, at: inc_stack_record_count mm/page_owner.c:214 [inline]
ffffffff8ea70118 (stack_list_lock){-.-.}-{3:3}, at: __set_page_owner+0x5cb/0x800 mm/page_owner.c:329
other info that might help us debug this:
context-{2:2}
3 locks held by syz.2.50/6094:
#0: ffff88807265f6d8 (&lockref->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#0: ffff88807265f6d8 (&lockref->lock){+.+.}-{3:3}, at: fast_dput+0x208/0x420 fs/dcache.c:783
#1: ffff8880234d4aa8 (&sb->s_type->i_lock_key#16){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
#1: ffff8880234d4aa8 (&sb->s_type->i_lock_key#16){+.+.}-{3:3}, at: lock_for_kill+0x85/0x210 fs/dcache.c:670
#2: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
stack backtrace:
CPU: 0 UID: 0 PID: 6094 Comm: syz.2.50 Not tainted 6.13.0-syzkaller-g57e71f8c8923 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
check_wait_context kernel/locking/lockdep.c:4900 [inline]
__lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
add_stack_record_to_list mm/page_owner.c:182 [inline]
inc_stack_record_count mm/page_owner.c:214 [inline]
__set_page_owner+0x5cb/0x800 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627
kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48
__kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544
task_work_add+0xd9/0x490 kernel/task_work.c:77
task_tick_numa kernel/sched/fair.c:3614 [inline]
task_tick_fair+0x30d/0x4e0 kernel/sched/fair.c:13074
sched_tick+0x21e/0x660 kernel/sched/core.c:5656
update_process_times+0x276/0x2f0 kernel/time/timer.c:2520
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1738 [inline]
__hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1802
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1864
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:321 [inline]
RIP: 0010:handle_softirqs+0x1ef/0x9b0 kernel/softirq.c:549
Code: 00 00 00 45 0f b7 e4 48 c7 c7 60 86 09 8c e8 88 a1 71 0a 65 66 c7 05 b6 0b a2 7e 00 00 e8 29 56 45 00 fb 49 c7 c6 c0 b0 60 8e ff ff ff ff 41 0f bc c4 41 89 c7 41 ff c7 0f 84 0a 04 00 00 44
RSP: 0018:ffffc90000007e20 EFLAGS: 00000282
RAX: 96c5d3e45a7f7c00 RBX: ffffc90000007ee0 RCX: ffffffff817b480a
RDX: dffffc0000000000 RSI: ffffffff8c0a8e60 RDI: ffffffff8c6011c0
RBP: ffffc90000007f50 R08: ffffffff942ed887 R09: 1ffffffff285db10
R10: dffffc0000000000 R11: fffffbfff285db11 R12: 0000000000000200
R13: 0000000000000000 R14: ffffffff8e60b0c0 R15: 1ffff11004a6e3c0
__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_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:rcu_read_unlock_special+0x88/0x570 kernel/rcu/tree_plugin.h:694
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 69 d7 7d 7e 41 f7 c7 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22
RSP: 0018:ffffc9000544fc20 EFLAGS: 00000206
RAX: 96c5d3e45a7f7c00 RBX: 1ffff92000a89f8c RCX: ffffffff817b480a
RDX: dffffc0000000000 RSI: ffffffff8c0a8e60 RDI: ffffffff8c6011c0
RBP: ffffc9000544fcf8 R08: ffffffff942ed887 R09: 1ffffffff285db10
R10: dffffc0000000000 R11: fffffbfff285db11 R12: 1ffff92000a89f88
R13: ffff888025372260 R14: ffffc9000544fc60 R15: 0000000000000000
__rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:438
dput+0x197/0x2b0 fs/dcache.c:866
__fput+0x5ba/0xa50 fs/file_table.c:458
task_work_run+0x24f/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: 0033:0x7fe84e58cda9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe37dfca08 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000001b25e RCX: 00007fe84e58cda9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fe84e7a7ba0 R08: 0000000000000001 R09: 00007ffe37dfcd0f
R10: 00007fe84e400000 R11: 0000000000000246 R12: 000000000001b6a4
R13: 00007fe84e7a5fa0 R14: 0000000000000032 R15: ffffffffffffffff
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 45 0f add %al,0xf(%rbp)
5: b7 e4 mov $0xe4,%bh
7: 48 c7 c7 60 86 09 8c mov $0xffffffff8c098660,%rdi
e: e8 88 a1 71 0a call 0xa71a19b
13: 65 66 c7 05 b6 0b a2 movw $0x0,%gs:0x7ea20bb6(%rip) # 0x7ea20bd3
1a: 7e 00 00
1d: e8 29 56 45 00 call 0x45564b
22: fb sti
23: 49 c7 c6 c0 b0 60 8e mov $0xffffffff8e60b0c0,%r14
* 2a: b8 ff ff ff ff mov $0xffffffff,%eax <-- trapping instruction
2f: 41 0f bc c4 bsf %r12d,%eax
33: 41 89 c7 mov %eax,%r15d
36: 41 ff c7 inc %r15d
39: 0f 84 0a 04 00 00 je 0x449
3f: 44 rex.R