rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P31560/1:b..l P29138/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=367689, q=519 ncpus=2)
task:kworker/u8:10 state:R running task stack:25696 pid:29138 tgid:29138 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 9a af 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:ffffc900040a7aa0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000814f56 RCX: 000000008a810d36
RDX: 0000000000000001 RSI: ffffffff8b2cb260 RDI: ffffffff8b9001c0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284d858
R10: ffffffff9426c2c7 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb1920 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+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:syz-executor.0 state:R running task stack:27168 pid:31560 tgid:31559 ppid:30883 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
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 9a af 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:ffffc90003347870 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000668f10 RCX: 000000006df51c0e
RDX: 0000000000000001 RSI: ffffffff8b2cb260 RDI: ffffffff8b9001c0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284d858
R10: ffffffff9426c2c7 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb1920 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
filemap_get_entry+0xdb/0x470 mm/filemap.c:1837
shmem_get_folio_gfp+0x369/0x13d0 mm/shmem.c:1982
shmem_get_folio mm/shmem.c:2160 [inline]
shmem_write_begin+0x15a/0x360 mm/shmem.c:2743
generic_perform_write+0x272/0x620 mm/filemap.c:4015
shmem_file_write_iter+0x114/0x140 mm/shmem.c:2919
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0x6b6/0x1140 fs/read_write.c:590
ksys_write+0x12f/0x260 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff9c647bcaf
RSP: 002b:00007ff9c7248e80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000400000 RCX: 00007ff9c647bcaf
RDX: 0000000000400000 RSI: 00007ff9bc200000 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000011ee
R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000005
R13: 00007ff9c7248f80 R14: 00007ff9c7248f40 R15: 00007ff9bc200000
rcu: rcu_preempt kthread starved for 10562 jiffies! g367689 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:27680 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
kthread+0x2c1/0x3a0 kernel/kthread.c:389
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: 27687 Comm: kworker/u9:0 Not tainted 6.10.0-rc2-syzkaller-00235-g8a92980606e3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: 0x0 (hci0)
RIP: 0010:mark_lock+0x130/0xc60 kernel/locking/lockdep.c:4697
Code: 00 00 00 48 8b 84 24 08 01 00 00 65 48 2b 04 25 28 00 00 00 0f 85 4c 09 00 00 48 8d 65 d8 89 d0 5b 41 5c 41 5d 41 5e 41 5f 5d cc cc cc cc 48 8d 7e 22 48 89 f8 48 c1 e8 03 0f b6 04 10 48 89
RSP: 0018:ffffc90000a18a10 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff88801a32297a RCX: 1ffffffff284ea18
RDX: 0000000000000001 RSI: 0000000000000100 RDI: ffffffff942750c0
RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff284d85a
R10: ffffffff9426c2d7 R11: 0000000000000002 R12: 0000000000000002
R13: 0000000000000000 R14: ffff88801a322958 R15: 00000000000000b0
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f123f461f80 CR3: 000000001d716000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4599 [inline]
__lock_acquire+0x992/0x3b30 kernel/locking/lockdep.c:5091
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
do_write_seqcount_begin_nested include/linux/seqlock.h:469 [inline]
do_write_seqcount_begin include/linux/seqlock.h:495 [inline]
psi_account_irqtime+0x2a3/0x510 kernel/sched/psi.c:1016
update_rq_clock_task kernel/sched/core.c:726 [inline]
update_rq_clock kernel/sched/core.c:770 [inline]
update_rq_clock+0x250/0xb30 kernel/sched/core.c:751
ttwu_queue kernel/sched/core.c:4056 [inline]
try_to_wake_up+0x56a/0x13e0 kernel/sched/core.c:4378
signal_wake_up_state+0x79/0x120 kernel/signal.c:773
signal_wake_up include/linux/sched/signal.h:448 [inline]
complete_signal+0x465/0xc10 kernel/signal.c:1065
__send_signal_locked+0x509/0x11c0 kernel/signal.c:1185
do_send_sig_info kernel/signal.c:1301 [inline]
group_send_sig_info+0x2aa/0x300 kernel/signal.c:1451
do_bpf_send_signal+0x9a/0x1d0 kernel/trace/bpf_trace.c:838
irq_work_single+0x1bc/0x260 kernel/irq_work.c:221
irq_work_run_list+0x92/0xc0 kernel/irq_work.c:252
irq_work_run+0x58/0xd0 kernel/irq_work.c:261
__sysvec_irq_work+0x8c/0x410 arch/x86/kernel/irq_work.c:22
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x90/0xb0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5282
Code: a9 0a 00 00 44 8b 0d 57 4c 86 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 d9 e6 36 00 fb 65 48 8b 1d e0 89 a5 7e <48> 8d bb f8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90004287b30 EFLAGS: 00000206
RAX: 0000000000211305 RBX: ffff88801a321e00 RCX: 1ffffffff1fc84c9
RDX: 0000000000000000 RSI: ffffffff8b2caf60 RDI: ffffffff8b9001c0
RBP: ffffc90004287b78 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe468d7 R11: 0000000000000000 R12: ffff8880b933f978
R13: ffff888020fc0000 R14: 0000000000000000 R15: ffff8880b923ec00
context_switch kernel/sched/core.c:5411 [inline]
__schedule+0xf1d/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:preempt_count_add+0xc/0x150 kernel/sched/core.c:5873
Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c0 e0 ab b4 94 55 <48> ba 00 00 00 00 00 fc ff df 48 89 c1 53 83 e0 07 89 fb 48 c1 e9
RSP: 0018:ffffc90004287df0 EFLAGS: 00000202
RAX: ffffffff94b4abe0 RBX: ffff88801a321e00 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8b2caf60 RDI: 0000000000000001
RBP: ffffed10034643c0 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8fe468d7 R11: 0000000000000000 R12: ffff88801a321e2c
R13: ffff88801a321e00 R14: ffffed100935c7c8 R15: fffffbfff1b01e40
__schedule_loop kernel/sched/core.c:6821 [inline]
schedule+0xe0/0x350 kernel/sched/core.c:6837
worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244