syzbot

sched: DL replenish lagged too much
watchdog: BUG: soft lockup - CPU#0 stuck for 164s! [syz.4.31:6004]
Modules linked in:
irq event stamp: 9248993
hardirqs last  enabled at (9248992): [<ffffffff8185d77a>] tasklet_action_common+0x15a/0x580 kernel/softirq.c:848
hardirqs last disabled at (9248993): [<ffffffff8b55cdbe>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last  enabled at (9248984): [<ffffffff8185c3fa>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last  enabled at (9248984): [<ffffffff8185c3fa>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last  enabled at (9248984): [<ffffffff8185c3fa>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
softirqs last disabled at (9248987): [<ffffffff8185c3fa>] __do_softirq kernel/softirq.c:613 [inline]
softirqs last disabled at (9248987): [<ffffffff8185c3fa>] invoke_softirq kernel/softirq.c:453 [inline]
softirqs last disabled at (9248987): [<ffffffff8185c3fa>] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
CPU: 0 UID: 0 PID: 6004 Comm: syz.4.31 Not tainted 6.15.0-rc4-syzkaller-g358b1c0f56eb #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0xa9/0x130 kernel/kcov.c:351
Code: c9 eb 08 49 ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d 49 7b b5 10 41 81 e3 00 01 ff 00 74 13 41 81 fb 00 01 00 00 75 d9 <41> 83 b8 3c 16 00 00 00 74 cf 45 8b 98 18 16 00 00 41 83 fb 03 75
RSP: 0018:ffffc900000073a0 EFLAGS: 00000246
RAX: 0000000000000020 RBX: 0000000000000004 RCX: 0000000000000005
RDX: ffffffff81c19db5 RSI: ffffffff8df90640 RDI: 0000000000000004
RBP: 00000038e0468558 R08: ffff88803084da00 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000100 R12: dffffc0000000000
R13: ffff88801a086010 R14: ffff88801a0869ac R15: 00000000000ee384
FS:  00007f7197d116c0(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000038000 CR3: 0000000033e24000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rb_event_length+0x45/0x400 kernel/trace/ring_buffer.c:222
 rb_read_data_buffer+0x438/0x580 kernel/trace/ring_buffer.c:1816
 check_buffer+0x28a/0x750 kernel/trace/ring_buffer.c:4297
 __rb_reserve_next+0x592/0xdb0 kernel/trace/ring_buffer.c:4396
 rb_reserve_next_event kernel/trace/ring_buffer.c:4533 [inline]
 ring_buffer_lock_reserve+0xbb5/0x1010 kernel/trace/ring_buffer.c:4592
 __trace_buffer_lock_reserve kernel/trace/trace.c:1028 [inline]
 trace_event_buffer_lock_reserve+0x1d0/0x6f0 kernel/trace/trace.c:2742
 trace_event_buffer_reserve+0x2a6/0x3d0 kernel/trace/trace_events.c:661
 do_trace_event_raw_event_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline]
 trace_event_raw_event_bpf_trace_printk+0x100/0x260 kernel/trace/bpf_trace.h:11
 __do_trace_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline]
 trace_bpf_trace_printk+0x170/0x1d0 kernel/trace/bpf_trace.h:11
 ____bpf_trace_printk kernel/trace/bpf_trace.c:380 [inline]
 bpf_trace_printk+0x11e/0x190 kernel/trace/bpf_trace.c:363
 bpf_prog_0605f9f479290f07+0x38/0x3c
 bpf_dispatcher_nop_func include/linux/bpf.h:1316 [inline]
 __bpf_prog_run include/linux/filter.h:718 [inline]
 bpf_prog_run include/linux/filter.h:725 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2291 [inline]
 bpf_trace_run1+0x27c/0x4b0 kernel/trace/bpf_trace.c:2331
 __bpf_trace_rcu_utilization+0xa1/0xf0 include/trace/events/rcu.h:27
 __do_trace_rcu_utilization include/trace/events/rcu.h:27 [inline]
 trace_rcu_utilization+0x1ad/0x1d0 include/trace/events/rcu.h:27
 rcu_core+0x12b/0x1710 kernel/rcu/tree.c:2796
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7090
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 eb c3 39 f6 e8 86 43 70 f6 fb bf 01 00 00 00 <e8> 4b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000b36f4e0 EFLAGS: 00000282
RAX: a49f5cdcdc3fc000 RBX: 0000000000000000 RCX: a49f5cdcdc3fc000
RDX: 0000000000000006 RSI: ffffffff8d749fcc RDI: 0000000000000001
RBP: ffffc9000b36f580 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e
R10: dffffc0000000000 R11: fffffbfff1efda6f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200166de9c
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:try_charge_memcg+0x501/0x1480 mm/memcontrol.c:2261
Code: 01 00 00 00 00 00 00 9c 8f 84 24 10 01 00 00 f6 84 24 11 01 00 00 02 0f 85 1b 02 00 00 41 f7 c7 00 02 00 00 74 01 fb 45 84 e4 <44> 8b 64 24 24 0f 85 50 0c 00 00 f7 44 24 20 00 0c 00 00 44 0f 44
RSP: 0018:ffffc9000b36f640 EFLAGS: 00000202
RAX: a49f5cdcdc3fc000 RBX: 0000000000000001 RCX: a49f5cdcdc3fc000
RDX: 0000000000000006 RSI: ffffffff8d749fcc RDI: ffffffff8bc1cde0
RBP: ffffc9000b36f850 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e
R10: dffffc0000000000 R11: fffffbfff1efda6f R12: dffffc0000000001
R13: ffff88807f028000 R14: dffffc0000000000 R15: 0000000000000206
 obj_cgroup_charge_pages+0x91/0x1c0 mm/memcontrol.c:2695
 __memcg_kmem_charge_page+0xd1/0x1c0 mm/memcontrol.c:2739
 __alloc_frozen_pages_noprof+0x1b5/0x370 mm/page_alloc.c:4987
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2301
 alloc_frozen_pages_noprof mm/mempolicy.c:2372 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2392
 anon_pipe_get_page fs/pipe.c:125 [inline]
 anon_pipe_write+0xb85/0x1360 fs/pipe.c:514
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x548/0xa90 fs/read_write.c:684
 ksys_write+0x145/0x250 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7196f8e969
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:00007f7197d11038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f71971b6080 RCX: 00007f7196f8e969
RDX: 00000000fffffdef RSI: 00002000000001c0 RDI: 0000000000000000
RBP: 00007f7197010ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f71971b6080 R15: 00007fff9d108568
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6010 Comm: syz.3.34 Not tainted 6.15.0-rc4-syzkaller-g358b1c0f56eb #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0x25/0x3e0 kernel/locking/lockdep.c:5877
Code: 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 49 89 f5 49 89 fe 65 48 8b 05 10 23 d7 10 48 89 44 24 28 <e9> 3a 03 00 00 65 8b 05 13 23 d7 10 83 f8 08 0f 83 9a 02 00 00 89
RSP: 0018:ffffc90000a071b8 EFLAGS: 00000086
RAX: 56bcedae72651900 RBX: 0000000000000001 RCX: ffff88802afd0000
RDX: 0000000000010100 RSI: ffffffff81cad457 RDI: ffffffff8df3b860
RBP: ffffc90000a07318 R08: ffffc90000a072af R09: 0000000000000000
R10: ffffc90000a072a0 R11: ffffffffa0001f1c R12: 0000000000000000
R13: ffffffff81cad457 R14: ffffffff8df3b860 R15: 0000000000000000
FS:  00007f58653f66c0(0000) GS:ffff8881261cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc94784b218 CR3: 0000000032e96000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 trace_call_bpf+0x5a9/0x850 kernel/trace/bpf_trace.c:148
 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10788
 do_perf_trace_lock include/trace/events/lock.h:50 [inline]
 perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50
 __do_trace_lock_release include/trace/events/lock.h:69 [inline]
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5877
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x70/0x110 kernel/locking/spinlock.c:194
 debug_object_activate+0x2e2/0x420 lib/debugobjects.c:836
 debug_hrtimer_activate kernel/time/hrtimer.c:445 [inline]
 debug_activate kernel/time/hrtimer.c:484 [inline]
 enqueue_hrtimer+0x30/0x3a0 kernel/time/hrtimer.c:1088
 __run_hrtimer kernel/time/hrtimer.c:1778 [inline]
 __hrtimer_run_queues+0x656/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 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:unwind_next_frame+0x91/0x2390 arch/x86/kernel/unwind_orc.c:-1
Code: 4d 8b 7e 38 4d 89 f4 49 c1 ec 03 41 0f b6 04 2c 84 c0 0f 85 de 1b 00 00 41 8b 06 85 c0 0f 84 32 02 00 00 89 84 24 84 00 00 00 <4c> 89 bc 24 90 00 00 00 e8 82 00 36 00 4c 8d 3d 00 00 00 00 48 c7
RSP: 0018:ffffc90000a079b8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff81a79fce RCX: 56bcedae72651900
RDX: dffffc0000000000 RSI: ffffffff81a79fce RDI: ffffc90000a07a88
RBP: dffffc0000000000 R08: ffffc90000a07b50 R09: 0000000000000015
R10: ffffc90000a07760 R11: ffffffff81acaa70 R12: 1ffff92000140f51
R13: ffffc90000a07ac0 R14: ffffc90000a07a88 R15: ffffc9000b34eca0
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4341 [inline]
 __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4353
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 ieee802_11_parse_elems_full+0x152/0x2b20 net/mac80211/parse.c:1013
 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2402 [inline]
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2409 [inline]
 ieee80211_inform_bss+0x10c/0x10a0 net/mac80211/scan.c:79
 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
 cfg80211_inform_single_bss_data+0xd02/0x1ac0 net/wireless/scan.c:2367
 cfg80211_inform_bss_data+0x1f6/0x3ad0 net/wireless/scan.c:3222
 cfg80211_inform_bss_frame_data+0x362/0x700 net/wireless/scan.c:3317
 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x527/0x9b0 net/mac80211/scan.c:340
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5179 [inline]
 ieee80211_rx_list+0x22fc/0x2d80 net/mac80211/rx.c:5416
 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5439
 ieee80211_rx include/net/mac80211.h:5179 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:441
 tasklet_action_common+0x369/0x580 kernel/softirq.c:829
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 8b e1 6e f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 73 63 38 f6 65 8b 05 5c e5 1c 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000b34eaa0 EFLAGS: 00000206
RAX: 56bcedae72651900 RBX: 0000000000000246 RCX: 56bcedae72651900
RDX: 0000000000000007 RSI: ffffffff8d749fcc RDI: 0000000000000001
RBP: ffffc9000b34eb30 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e
R10: dffffc0000000000 R11: fffffbfff1efda6f R12: dffffc0000000000
R13: ffffffff8df40c00 R14: ffffffff8df40bc0 R15: 1ffff92001669d54
 rcu_preempt_deferred_qs_irqrestore+0x851/0xc40 kernel/rcu/tree_plugin.h:-1
 rcu_read_unlock_special+0x3fe/0x4c0 kernel/rcu/tree_plugin.h:693
 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438
 rcu_read_unlock include/linux/rcupdate.h:873 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0x19ae/0x2390 arch/x86/kernel/unwind_orc.c:680
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf7/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0xb0e/0xcd0 mm/page_alloc.c:2725
 discard_slab mm/slub.c:2730 [inline]
 __put_partials+0x161/0x1c0 mm/slub.c:3199
 put_cpu_partial+0x17c/0x250 mm/slub.c:3274
 __slab_free+0x2f7/0x400 mm/slub.c:4526
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4161 [inline]
 slab_alloc_node mm/slub.c:4210 [inline]
 __do_kmalloc_node mm/slub.c:4340 [inline]
 __kvmalloc_node_noprof+0x2b7/0x5e0 mm/slub.c:5026
 kvmalloc_array_node_noprof include/linux/slab.h:1065 [inline]
 bpf_check+0xee2/0x19a70 kernel/bpf/verifier.c:23980
 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2971
 __sys_bpf+0x5f1/0x860 kernel/bpf/syscall.c:5834
 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5939 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f586758e969
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:00007f58653f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f58677b6080 RCX: 00007f586758e969
RDX: 0000000000000094 RSI: 0000200000000500 RDI: 0000000000000005
RBP: 00007f5867610ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f58677b6080 R15: 00007fff7fa133b8
 </TASK>