rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=62ac/1/0x4000000000000000 softirq=32528/32528 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7364/1:b..l P5830/1:b..l
rcu: (detected by 1, t=10505 jiffies, g=31365, q=316 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9571 Comm: syz.4.967 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__lock_acquire+0xe8f/0x2100
Code: cf 49 89 fd 48 c7 c7 40 4d 80 8e 48 89 ee e8 08 1b 78 03 4c 89 ef eb 8a 89 d8 25 ff 1f 00 00 c1 eb 03 81 e3 00 60 00 00 09 c3 <4c> 89 f0 48 c1 e8 20 29 c3 89 c1 c1 c1 04 31 d9 44 01 f0 41 29 ce
RSP: 0018:ffffc90000007930 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88805dbf64e0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff88805dbf6530 R08: ffffffff94270887 R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: ffff88805dbf5a00
R13: ffff88805dbf5a00 R14: fb268dbe5ff7dd64 R15: 0000000000000000
FS: 00007f394a90b6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb1cff8 CR3: 000000007f834000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000016 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475
__run_hrtimer kernel/time/hrtimer.c:1707 [inline]
__hrtimer_run_queues+0x305/0xd30 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 7e c5 3f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 13 f7 a9 f5 65 8b 05 44 49 40 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000c03f920 EFLAGS: 00000206
RAX: 99962237b651fb00 RBX: 1ffff92001807f28 RCX: ffffffff817b274a
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: 0000000000000001
RBP: ffffc9000c03f9b0 R08: ffffffff94270887 R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: dffffc0000000000
R13: 1ffff92001807f24 R14: ffffc9000c03f940 R15: 0000000000000246
clock_was_set+0x686/0x810 kernel/time/hrtimer.c:959
timekeeping_inject_offset+0x3d2/0x520 kernel/time/timekeeping.c:1481
do_adjtimex+0x5b1/0xb10 kernel/time/timekeeping.c:2581
do_clock_adjtime kernel/time/posix-timers.c:1165 [inline]
__do_sys_clock_adjtime kernel/time/posix-timers.c:1177 [inline]
__se_sys_clock_adjtime kernel/time/posix-timers.c:1168 [inline]
__x64_sys_clock_adjtime+0x1e1/0x290 kernel/time/posix-timers.c:1168
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: 0033:0x7f3949b85d29
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:00007f394a90b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f3949d75fa0 RCX: 00007f3949b85d29
RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000000
RBP: 00007f3949c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3949d75fa0 R15: 00007ffd5e85d458
task:syz-executor state:R running task stack:18872 pid:5830 tgid:5830 ppid:5814 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6935
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.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]
copy_pte_range mm/memory.c:1200 [inline]
copy_pmd_range+0x6dc8/0x77a0 mm/memory.c:1261
copy_pud_range mm/memory.c:1298 [inline]
copy_p4d_range mm/memory.c:1322 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1420
dup_mmap kernel/fork.c:748 [inline]
dup_mm kernel/fork.c:1691 [inline]
copy_mm+0x1126/0x1fd0 kernel/fork.c:1743
copy_process+0x1845/0x3d50 kernel/fork.c:2394
kernel_clone+0x223/0x870 kernel/fork.c:2806
__do_sys_clone kernel/fork.c:2949 [inline]
__se_sys_clone kernel/fork.c:2933 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2933
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: 0033:0x7fe564b7c593
RSP: 002b:00007fff8ca06288 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe564b7c593
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555571f3a7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000061842 R14: 00007fff8ca06410 R15: 00000000000000ca
task:kworker/u8:14 state:R running task stack:20152 pid:7364 tgid:7364 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
preempt_schedule_notrace+0x100/0x140 kernel/sched/core.c:7028
preempt_schedule_notrace_thunk+0x1a/0x30 arch/x86/entry/thunk.S:13
rcu_is_watching+0x7e/0xb0 kernel/rcu/tree.c:738
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xbf/0xa30 kernel/locking/lockdep.c:5860
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:771 [inline]
batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:825 [inline]
batadv_iv_ogm_schedule+0x6f3/0x10a0 net/batman-adv/bat_iv_ogm.c:868
batadv_iv_send_outstanding_bat_ogm_packet+0x6fe/0x810 net/batman-adv/bat_iv_ogm.c:1712
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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: rcu_preempt kthread timer wakeup didn't happen for 10504 jiffies! g31365 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=32004
rcu: rcu_preempt kthread starved for 10505 jiffies! g31365 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:25296 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