rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=be5c/1/0x4000000000000000 softirq=9887/9888 fqs=15
rcu: (t=10501 jiffies g=8149 q=1098 ncpus=2)
rcu: rcu_preempt kthread starved for 10422 jiffies! g8149 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:28320 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1808
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12 Comm: kworker/u4:1 Not tainted 6.5.0-rc4-syzkaller-00177-ga47e598fbd86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:div_u64_rem include/linux/math64.h:29 [inline]
RIP: 0010:div_u64 include/linux/math64.h:130 [inline]
RIP: 0010:pie_calculate_probability+0x284/0x850 net/sched/sch_pie.c:345
Code: 89 c5 48 89 6c 24 38 e8 8a dc 2d f9 47 8d 24 a4 31 d2 4c 89 ff 43 8d 0c 24 49 c1 ee 02 48 b8 ff ff ff ff ff ff ff 00 48 f7 f1 <48> 89 c5 48 89 c6 48 c1 eb 02 49 89 cc e8 6a d7 2d f9 49 39 ef 73
RSP: 0018:ffffc90000007bc0 EFLAGS: 00000206
RAX: 00004189374bc6a7 RBX: 00000000abcc7711 RCX: 00000000000003e8
RDX: 00000000000003a7 RSI: ffffffff88582b96 RDI: 0000000000000000
RBP: ffff88807dd98300 R08: 0000000000000007 R09: 00028f5c28f5c28e
R10: 0000000000000000 R11: 0000000085494f21 R12: 00000000000001f4
R13: 0000000000000005 R14: 00000000044b82fa R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555563756f8 CR3: 000000000c776000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5729
Code: c1 05 55 6f 9b 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 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:ffffc90000117ac8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000022f5b RCX: 0000000000000001
RDX: 1ffff11002a4cc80 RSI: ffffffff8a6c7780 RDI: ffffffff8ac80560
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23095d0
R10: ffffffff9184ae87 R11: 1ffffffff1936271 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c9a6580 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
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+0x175/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
worker_thread+0x687/0x1110 kernel/workqueue.c:2748
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
CPU: 1 PID: 5023 Comm: sshd Not tainted 6.5.0-rc4-syzkaller-00177-ga47e598fbd86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x32/0x90 kernel/kcov.c:236
Code: 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25 80 b9 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 04 16 00 00 <85> c0 74 4f 8b 82 e0 15 00 00 83 f8 03 75 44 48 8b 82 e8 15 00 00
RSP: 0018:ffffc900001e0bc8 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 000000002af31dc4 RCX: ffffffff88582bdd
RDX: ffff8880279f1dc0 RSI: 0000000000000100 RDI: 0000000000000005
RBP: 00004189374bc6a7 R08: 0000000000000005 R09: 00000000000f4240
R10: 00000000000003e8 R11: 0000000023950e10 R12: 00000000000003e8
R13: 0000000000000005 R14: 00000000044b82fa R15: 0000000000000000
FS: 00007f24c5297800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff76acd80f0 CR3: 0000000072d79000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pie_calculate_probability+0x2ad/0x850 net/sched/sch_pie.c:345
fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x218/0x965 kernel/softirq.c:553
do_softirq kernel/softirq.c:454 [inline]
do_softirq+0xaa/0xe0 kernel/softirq.c:441
__local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:819 [inline]
__dev_queue_xmit+0xb1d/0x3f20 net/core/dev.c:4230
dev_queue_xmit include/linux/netdevice.h:3088 [inline]
neigh_hh_output include/net/neighbour.h:528 [inline]
neigh_output include/net/neighbour.h:542 [inline]
ip_finish_output2+0x1701/0x24b0 net/ipv4/ip_output.c:230
__ip_finish_output net/ipv4/ip_output.c:308 [inline]
__ip_finish_output+0x38b/0x640 net/ipv4/ip_output.c:290
ip_finish_output+0x31/0x280 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:292 [inline]
ip_output+0x198/0x310 net/ipv4/ip_output.c:432
dst_output include/net/dst.h:458 [inline]
ip_local_out net/ipv4/ip_output.c:127 [inline]
__ip_queue_xmit+0xa15/0x1bf0 net/ipv4/ip_output.c:534
__tcp_transmit_skb+0x199b/0x3a80 net/ipv4/tcp_output.c:1401
tcp_transmit_skb net/ipv4/tcp_output.c:1419 [inline]
tcp_write_xmit+0xf28/0x72b0 net/ipv4/tcp_output.c:2735
__tcp_push_pending_frames+0xaf/0x390 net/ipv4/tcp_output.c:2919
tcp_push+0x4a1/0x730 net/ipv4/tcp.c:734
tcp_sendmsg_locked+0x26de/0x3420 net/ipv4/tcp.c:1301
tcp_sendmsg+0x2e/0x40 net/ipv4/tcp.c:1333
inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg+0xd9/0x180 net/socket.c:748
sock_write_iter+0x29b/0x3d0 net/socket.c:1129
call_write_iter include/linux/fs.h:1871 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x650/0xe40 fs/read_write.c:584
ksys_write+0x1f0/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f24c4f16bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffdd271cf78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000074 RCX: 00007f24c4f16bf2
RDX: 0000000000000074 RSI: 0000564263c50be0 RDI: 0000000000000004
RBP: 0000564263c42220 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000564262020aa4
R13: 0000000000000047 R14: 00005642620213e8 R15: 00007ffdd271cfe8