rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=a3dc/1/0x4000000000000000 softirq=89195/89199 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P15727/1:b..l
rcu: (detected by 1, t=10506 jiffies, g=139337, q=125 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24938 Comm: syz-executor.0 Not tainted 6.6.0-rc7-syzkaller-00018-gd88520ad73b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4819 [inline]
RIP: 0010:__lock_acquire+0xb1a/0x7f70 kernel/locking/lockdep.c:5086
Code: 38 c1 0f 8c c7 fe ff ff 48 c7 c7 d0 9d 99 8e e8 9c a6 7b 00 49 b8 00 00 00 00 00 fc ff df e9 ac fe ff ff 8b 84 24 80 00 00 00 <38> 44 24 30 4c 8b 6c 24 58 4c 8b 3c 24 76 38 e8 32 45 ce 02 49 b8
RSP: 0018:ffffc90000007820 EFLAGS: 00000046
RAX: 00000000ffffff02 RBX: 00000000ffffff02 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff906e4380
RBP: ffffc90000007ae8 R08: dffffc0000000000 R09: 1ffffffff20dc870
R10: dffffc0000000000 R11: fffffbfff20dc871 R12: ffff8880215e8ac0
R13: 0000000000000000 R14: ffff8880215e8aac R15: ffff8880215e8ae8
FS: 00005555559f0480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000480 CR3: 0000000042512000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock include/linux/rcupdate.h:749 [inline]
advance_sched+0xa27/0xcb0 net/sched/sch_taprio.c:996
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x59f/0xd10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
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 2e 29 12 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 03 ed 89 f6 65 8b 05 f4 24 2d 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc9000af1fa60 EFLAGS: 00000206
RAX: f2a9ce62a3d8e100 RBX: 1ffff920015e3f50 RCX: ffffffff91edc303
RDX: dffffc0000000000 RSI: ffffffff8b0aa520 RDI: 0000000000000001
RBP: ffffc9000af1fae8 R08: ffffffff8e99692f R09: 1ffffffff1d32d25
R10: dffffc0000000000 R11: fffffbfff1d32d26 R12: dffffc0000000000
R13: 1ffff920015e3f4c R14: ffffc9000af1fa80 R15: 0000000000000246
futex_wait_queue+0xaf/0x1d0 kernel/futex/waitwake.c:342
futex_wait+0x207/0x5c0 kernel/futex/waitwake.c:656
do_futex+0x331/0x530 kernel/futex/syscalls.c:106
__do_sys_futex kernel/futex/syscalls.c:183 [inline]
__se_sys_futex+0x3f8/0x480 kernel/futex/syscalls.c:164
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fde8e27cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe98ea0dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00000000001fdae4 RCX: 00007fde8e27cae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fde8e39bf8c
RBP: 0000000000000032 R08: 00007fde8e39bf8c R09: 00007fde8e39bf8c
R10: 00007ffe98ea0f10 R11: 0000000000000246 R12: 00007fde8e39bf8c
R13: 00000000001fdb16 R14: 00007ffe98ea0f30 R15: 00007ffe98ea0f10
task:kworker/u4:1 state:R running task stack:20264 pid:15727 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:7007
irqentry_exit+0x57/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x25a/0x520 kernel/locking/lockdep.c:5757
Code: 2b 00 74 08 4c 89 f7 e8 e4 b5 7b 00 f6 44 24 61 02 0f 85 84 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 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90005a979c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000b52f44 RCX: ffffffff816d1d87
RDX: 0000000000000000 RSI: ffffffff8b0ab6a0 RDI: ffffffff8b5986a0
RBP: ffffc90005a97b10 R08: dffffc0000000000 R09: 1ffffffff20dc870
R10: dffffc0000000000 R11: fffffbfff20dc871 R12: 1ffff92000b52f40
R13: dffffc0000000000 R14: ffffc90005a97a20 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock include/linux/rcupdate.h:749 [inline]
batadv_nc_process_nc_paths+0xd6/0x390 net/batman-adv/network-coding.c:687
batadv_nc_worker+0x42a/0x610 net/batman-adv/network-coding.c:728
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: rcu_preempt kthread starved for 10506 jiffies! g139337 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:26504 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1613
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1812
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 24942 Comm: syz-executor.4 Not tainted 6.6.0-rc7-syzkaller-00018-gd88520ad73b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:csd_lock_wait kernel/smp.c:300 [inline]
RIP: 0010:smp_call_function_many_cond+0x1805/0x2890 kernel/smp.c:844
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 b4 58 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 ef 54 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 d3 54
RSP: 0018:ffffc9000b19f7a0 EFLAGS: 00000246
RAX: ffffffff8182c88d RBX: 1ffff110173087b9 RCX: 0000000000040000
RDX: ffffc9000aab2000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000b19f990 R08: ffffffff8182c85c R09: 1ffffffff1d32d25
R10: dffffc0000000000 R11: fffffbfff1d32d26 R12: dffffc0000000000
R13: ffff8880b9843dc8 R14: ffff8880b993d440 R15: 0000000000000000
FS: 00007fc5c7d336c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000440 CR3: 0000000039e1d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
clock_was_set+0x779/0x830 kernel/time/hrtimer.c:976
timekeeping_inject_offset+0x663/0x710 kernel/time/timekeeping.c:1395
do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2444
do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
__do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
__se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
__x64_sys_clock_adjtime+0x1e0/0x290 kernel/time/posix-timers.c:1162
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc5c707cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc5c7d330c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007fc5c719bf80 RCX: 00007fc5c707cae9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fc5c70c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc5c719bf80 R15: 00007ffd98a3a3f8