rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (0 ticks this GP) idle=4424/1/0x4000000000000000 softirq=53381/53381 fqs=2
rcu: (detected by 0, t=10502 jiffies, g=39593, q=220 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 16102 Comm: syz.0.2224 Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:lock_acquire+0x25b/0x550 kernel/locking/lockdep.c:5853
Code: 00 9c 8f 44 24 60 42 80 3c 2b 00 74 08 4c 89 f7 e8 0a a1 88 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb <48> c7 44 24 40 0e 36 e0 45 4b c7 44 25 00 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90000a18b00 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff817aaec4
RDX: 0000000000000000 RSI: ffffffff8c5ed740 RDI: ffffffff8c5ed700
RBP: ffffc90000a18c58 R08: ffffffff90184ef7 R09: 1ffffffff20309de
R10: dffffc0000000000 R11: fffffbfff20309df R12: 1ffff92000143168
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88805c6a2360
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2cc83b CR3: 000000004e24c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
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+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:obj_cgroup_uncharge_pages+0x157/0x210 mm/memcontrol.c:2624
Code: 8f 44 24 40 43 80 7c 25 00 00 74 05 e8 e2 fe f7 ff f6 44 24 41 02 0f 85 8b 00 00 00 f7 44 24 18 00 02 00 00 74 01 fb 4c 89 ff <89> de e8 22 2b ff ff 4c 89 ff 8b 74 24 14 e8 96 e9 ff ff 49 8d 5f
RSP: 0018:ffffc9000499f980 EFLAGS: 00000206
RAX: aea3c32641d1b500 RBX: 00000000ffffffff RCX: ffffffff81a73c8c
RDX: dffffc0000000000 RSI: ffffffff8c5ed740 RDI: ffff888028634000
RBP: ffffc9000499fa50 R08: ffffffff90184ef7 R09: 1ffffffff20309de
R10: dffffc0000000000 R11: fffffbfff20309df R12: dffffc0000000000
R13: 1ffff92000933f38 R14: 1ffff92000933f34 R15: ffff888028634000
__memcg_kmem_uncharge_page+0xe9/0x290 mm/memcontrol.c:2699
memcg_kmem_uncharge_page include/linux/memcontrol.h:1704 [inline]
exit_task_stack_account+0xd7/0x340 kernel/fork.c:567
do_exit+0x1d02/0x28e0 kernel/exit.c:979
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3017
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [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+0xce/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: 0033:0x7f756a185d19
Code: Unable to access opcode bytes at 0x7f756a185cef.
RSP: 002b:00007f756af4f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f756a375fa8 RCX: 00007f756a185d19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f756a375fa8
RBP: 00007f756a375fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f756a375fac
R13: 0000000000000000 R14: 00007ffdd401ad20 R15: 00007ffdd401ae08
rcu: rcu_preempt kthread starved for 10498 jiffies! g39593 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:26168 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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:
CPU: 0 UID: 0 PID: 16101 Comm: syz.0.2224 Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2c60 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 56 e9 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 01 e5 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 e5 e4
RSP: 0018:ffffc90004a9f680 EFLAGS: 00000293
RAX: ffffffff81938ebb RBX: 1ffff110170e88b9 RCX: ffff88805a105a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004a9f880 R08: ffffffff81938e8a R09: 1ffffffff20309de
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880b87445c8 R14: ffff8880b863f940 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa1eb452d8 CR3: 0000000063dd6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:939 [inline]
flush_tlb_mm_range+0x329/0x5c0 arch/x86/mm/tlb.c:1025
tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:465 [inline]
tlb_flush_mmu+0x1aa/0x680 mm/mmu_gather.c:372
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
exit_mmap+0x496/0xc20 mm/mmap.c:1681
__mmput+0x115/0x3b0 kernel/fork.c:1353
exit_mm+0x220/0x310 kernel/exit.c:570
do_exit+0x9b2/0x28e0 kernel/exit.c:925
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096
x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
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: 0033:0x7f756a185d19
Code: Unable to access opcode bytes at 0x7f756a185cef.
RSP: 002b:00007ffdd401b178 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f756a185d19
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffdd401b1cc R08: 00007ffdd401b25f R09: 00000000000e5914
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000032
R13: 00000000000e5914 R14: 00007ffdd401b220 R15: 00007ffdd401b220