rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P10/1:b..l P19625/1:b..l P19642/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=139465, q=310 ncpus=2)
task:syz-executor.3 state:R running task stack:27184 pid:19642 tgid:19642 ppid:18948 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6925
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1674 [inline]
zap_pmd_range mm/memory.c:1722 [inline]
zap_pud_range mm/memory.c:1751 [inline]
zap_p4d_range mm/memory.c:1772 [inline]
unmap_page_range+0x1c06/0x3c30 mm/memory.c:1793
unmap_single_vma+0x194/0x2b0 mm/memory.c:1839
unmap_vmas+0x22f/0x490 mm/memory.c:1883
exit_mmap+0x1c1/0xb90 mm/mmap.c:3267
__mmput+0x12a/0x4d0 kernel/fork.c:1346
mmput+0x62/0x70 kernel/fork.c:1368
exit_mm kernel/exit.c:569 [inline]
do_exit+0x999/0x2c10 kernel/exit.c:865
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
__do_sys_exit_group kernel/exit.c:1038 [inline]
__se_sys_exit_group kernel/exit.c:1036 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f243887dea9
RSP: 002b:00007fffd67bd888 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f243887dea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f2438800000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
task:syz-executor.4 state:R running task stack:24976 pid:19625 tgid:19623 ppid:15301 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6925
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1674 [inline]
zap_pmd_range mm/memory.c:1722 [inline]
zap_pud_range mm/memory.c:1751 [inline]
zap_p4d_range mm/memory.c:1772 [inline]
unmap_page_range+0xbe0/0x3c30 mm/memory.c:1793
unmap_single_vma+0x194/0x2b0 mm/memory.c:1839
unmap_vmas+0x22f/0x490 mm/memory.c:1883
unmap_region+0x1f3/0x420 mm/mmap.c:2310
do_vmi_align_munmap+0x11b3/0x1ad0 mm/mmap.c:2628
do_vmi_munmap+0x20b/0x450 mm/mmap.c:2696
__vm_munmap+0x145/0x3a0 mm/mmap.c:2972
__do_sys_munmap mm/mmap.c:2989 [inline]
__se_sys_munmap mm/mmap.c:2986 [inline]
__x64_sys_munmap+0x61/0x90 mm/mmap.c:2986
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb1d687df37
RSP: 002b:00007fb1d63feea8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007fb1d687df37
RDX: 0000000000000000 RSI: 0000000008400000 RDI: 00007fb1cc600000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000097aa
R10: 0000000020009782 R11: 0000000000000246 R12: 0000000000000003
R13: 00007fb1d63fef80 R14: 00007fb1d63fef40 R15: 00007fb1cc600000
task:kworker/u8:0 state:R running task stack:22704 pid:10 tgid:10 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7068
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 ca 9f 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900000f7aa8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200001ef57 RCX: 00000000e0ab1720
RDX: 0000000000000001 RSI: ffffffff8b0cb100 RDI: ffffffff8b6f5720
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff27bb030
R10: ffffffff93dd8187 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8d7b0e20 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x16e/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g139465 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=62353
rcu: rcu_preempt kthread starved for 10502 jiffies! g139465 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28736 pid:16 tgid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2582
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1663
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1862
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 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 PID: 18948 Comm: syz-executor.3 Not tainted 6.9.0-rc5-syzkaller-00007-g4d2008430ce8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:mark_usage kernel/locking/lockdep.c:4566 [inline]
RIP: 0010:__lock_acquire+0x124b/0x3b30 kernel/locking/lockdep.c:5091
Code: 02 00 e8 e8 41 59 09 e9 e2 fc ff ff 65 8b 05 d4 db 96 7e 85 c0 0f 85 0f 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 7c 24 48 <48> 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0
RSP: 0018:ffffc90000a08be0 EFLAGS: 00000002
RAX: dffffc0000000000 RBX: ffff88802256a8fa RCX: 1ffffffff27bbb33
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88802256a8bc
RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff27bb031
R10: ffffffff93dd818f R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffff88802256a8d8 R15: 0000000000000002
FS: 000055555d308480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d723000 CR3: 000000004471a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1696 [inline]
__hrtimer_run_queues+0x2c0/0xcc0 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5283
Code: a9 0a 00 00 44 8b 0d 07 09 41 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 a9 81 36 00 fb 65 48 8b 1d 10 7c a5 7e <48> 8d bb f0 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000323fc60 EFLAGS: 00000202
RAX: 00000000000d52e5 RBX: ffff888022569e00 RCX: 1ffffffff1f3ddc1
RDX: 0000000000000000 RSI: ffffffff8b0cae00 RDI: ffffffff8b6f5720
RBP: ffffc9000323fca8 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f9f3097 R11: 0000000000000000 R12: ffff8880b953f7b8
R13: ffff888028193c00 R14: 0000000000000000 R15: ffff8880b953ea40
context_switch kernel/sched/core.c:5412 [inline]
__schedule+0xf1d/0x5d00 kernel/sched/core.c:6746
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7068
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:165 [inline]
RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
RIP: 0010:do_syscall_64+0x9a/0x260 arch/x86/entry/common.c:79
Code: 00 48 8b 7d 08 e8 16 51 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 f6 14 ba f6 90 90 e8 6f 16 ba f6 fb 65 48 8b 05 d6 10 29 75 <48> 8b 50 08 f6 c2 3f 0f 85 3e 01 00 00 90 90 41 81 fc cd 01 00 00
RSP: 0018:ffffc9000323ff28 EFLAGS: 00000206
RAX: ffff888022569e00 RBX: ffffc9000323ff58 RCX: 1ffffffff1f3ddc1
RDX: 0000000000000000 RSI: ffffffff8b0cae00 RDI: ffffffff8b6f5720
RBP: ffffc9000323ff48 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f9f3097 R11: 0000000000000000 R12: 000000000000003d
R13: 000000000000003d R14: 0000000000000000 R15: 0000000000000000
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f243887a8d7
Code: 89 7c 24 10 48 89 4c 24 18 e8 d5 a3 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 25 a4 02 00 8b 44
RSP: 002b:00007fffd67bd880 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000000077 RCX: 00007f243887a8d7
RDX: 0000000040000001 RSI: 00007fffd67bd90c RDI: 00000000ffffffff
RBP: 00007fffd67bd90c R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000119734 R14: 00000000001196eb R15: 0000000000000003
vkms_vblank_simulate: vblank timer overrun