rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P20803/1:b..l
rcu: (detected by 0, t=10504 jiffies, g=196685, q=12 ncpus=2)
task:kworker/u4:14 state:R running task stack:21296 pid:20803 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1873/0x48f0 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+0x26/0x520 kernel/locking/lockdep.c:5721
Code: 00 00 66 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 20 01 00 00 4c 89 4c 24 28 4c 89 44 24 38 <48> 89 4c 24 30 89 54 24 1c 41 89 f6 48 89 7c 24 20 65 48 8b 04 25
RSP: 0018:ffffc900051b7a80 EFLAGS: 00000282
RAX: ffffffff8a980b0e RBX: ffff88807bf79a70 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d32c4a0
RBP: ffffc900051b7bd8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d346de R12: 000000000000034e
R13: dffffc0000000000 R14: ffff888078094c80 R15: ffff88801e4b5ec0
rcu_lock_acquire+0x2e/0x40 include/linux/rcupdate.h:303
rcu_read_lock include/linux/rcupdate.h:749 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xc5/0x5c0 net/batman-adv/network-coding.c:719
process_one_work+0x781/0x1130 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0xabf/0x1060 kernel/workqueue.c:2784
kthread+0x2b8/0x350 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 timer wakeup didn't happen for 10501 jiffies! g196685 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=199122
rcu: rcu_preempt kthread starved for 10502 jiffies! g196685 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:25008 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_timeout+0x1bd/0x310 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+0x2b8/0x350 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9398 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-11275-gdb906f0ca6bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:206
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d 64 ab 0c 0d 48 89 de 5b e9 33 14 59 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d f0 2a 76 7e 65 8b 15 f1 2a 76 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc900001f0c88 EFLAGS: 00000046
RAX: ffffffff88e6f178 RBX: 0000000000000000 RCX: ffff888076880000
RDX: ffff888076880000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888012ea58c8 R08: ffffffff88e6f15f R09: 1ffff1100a98d42b
R10: dffffc0000000000 R11: ffffed100a98d42c R12: dffffc0000000000
R13: ffff888012ea5808 R14: ffff888012ea5800 R15: ffff888054c6a360
FS: 00007fd3bdd056c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe53600d58 CR3: 00000000565eb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:778 [inline]
advance_sched+0xac8/0xc80 net/sched/sch_taprio.c:998
__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:profile_hit include/linux/profile.h:57 [inline]
RIP: 0010:schedule_debug kernel/sched/core.c:5959 [inline]
RIP: 0010:__schedule+0x2a8/0x48f0 kernel/sched/core.c:6589
Code: 48 c7 c2 60 3c 0a 8b e8 a6 e2 9c f6 0f 1f 44 00 00 48 c7 c0 b0 38 9a 8e 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 0f 85 2c 18 00 00 83 3d c9 c4 c9 03 02 0f 84 a6 16 00 00 4c
RSP: 0018:ffffc9000ee8f2a0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8b597480 RDI: ffffffff8b597440
RBP: ffffc9000ee8f4c8 R08: ffffc9000ee8f45f R09: 0000000000000000
R10: ffffc9000ee8f450 R11: fffff52001dd1e8c R12: ffff888076880000
R13: 1ffff92001dd1ea0 R14: dffffc0000000000 R15: ffff8880b9900000
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
unix_wait_for_peer+0x24f/0x340 net/unix/af_unix.c:1471
unix_dgram_sendmsg+0x13b4/0x2070 net/unix/af_unix.c:2057
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg net/socket.c:753 [inline]
____sys_sendmsg+0x592/0x890 net/socket.c:2540
___sys_sendmsg net/socket.c:2594 [inline]
__sys_sendmmsg+0x3b2/0x730 net/socket.c:2680
__do_sys_sendmmsg net/socket.c:2709 [inline]
__se_sys_sendmmsg net/socket.c:2706 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2706
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: 0033:0x7fd3bd07cae9
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:00007fd3bdd050c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fd3bd19bf80 RCX: 00007fd3bd07cae9
RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000004
RBP: 00007fd3bd0c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd3bd19bf80 R15: 00007ffce55cfea8