rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10499 ticks this GP) idle=86b4/1/0x4000000000000000 softirq=13293/13293 fqs=4
rcu: (t=10501 jiffies g=16985 q=679 ncpus=2)
rcu: rcu_preempt kthread starved for 10488 jiffies! g16985 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:28240 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:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
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: 41 Comm: kworker/u4:2 Not tainted 6.5.0-rc3-syzkaller-00840-g36e68eadd303 #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 7a 90 2c 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 5a 8b 2c f9 49 39 ef 73
RSP: 0018:ffffc90000007bc0 EFLAGS: 00000207
RAX: 00000001ad7f29ab RBX: 0000000000abcc77 RCX: 0000000000989680
RDX: 000000000078f87f RSI: ffffffff8859ee56 RDI: 0000000000000000
RBP: 00000010c6f7a0b5 R08: 0000000000000005 R09: 00000000000f4240
R10: 00000000000f4240 R11: 0000000016aaf2f6 R12: 00000000004c4b40
R13: 0000000000000001 R14: 0000000000044b82 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f72db3250f4 CR3: 000000002c2dd000 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 d5 f1 9a 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:ffffc90000b27ac8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000164f5b RCX: 0000000000000001
RDX: 1ffff11002ece510 RSI: ffffffff8a6c7b80 RDI: ffffffff8ac812e0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff230a9d0
R10: ffffffff91854e87 R11: 1ffffffff19362a1 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c9a6700 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:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.809 msecs
CPU: 1 PID: 5935 Comm: syz-executor427 Not tainted 6.5.0-rc3-syzkaller-00840-g36e68eadd303 #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+0x28/0x90 kernel/kcov.c:236
Code: 00 00 65 8b 05 91 40 7d 7e 49 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
RSP: 0018:ffffc900001e0bc8 EFLAGS: 00000206
RAX: 0000000000000102 RBX: 00000000002af31d RCX: ffffffff8859ee86
RDX: ffff888022a5bb80 RSI: 0000000000000100 RDI: 0000000000000006
RBP: 00000001ad7f29ab R08: 0000000000000006 R09: 0000000000000000
R10: 00000001ad7f29ab R11: 0000000000094000 R12: 0000000000989680
R13: 0000000000000001 R14: 0000000000044b82 R15: 0000000000000000
FS: 00005555556193c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000a0ba1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pie_calculate_probability+0x296/0x850 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
spin_unlock_bh include/linux/spinlock.h:396 [inline]
dev_reset_queue+0xb9/0x1d0 net/sched/sch_generic.c:1295
netdev_for_each_tx_queue include/linux/netdevice.h:2537 [inline]
dev_deactivate_many+0x36f/0xb10 net/sched/sch_generic.c:1359
dev_deactivate+0xed/0x1b0 net/sched/sch_generic.c:1382
qdisc_graft+0xde1/0x1680 net/sched/sch_api.c:1108
tc_modify_qdisc+0xcd2/0x1bf0 net/sched/sch_api.c:1731
rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6423
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575
netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline]
netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1370
netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1939
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg+0xd9/0x180 net/socket.c:748
____sys_sendmsg+0x6ac/0x940 net/socket.c:2494
___sys_sendmsg+0x135/0x1d0 net/socket.c:2548
__sys_sendmsg+0x117/0x1e0 net/socket.c:2577
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: 0033:0x7f72db2930c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 1a 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:00007fff7348fe38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f72db2930c9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 00007fff7348feb0 R09: 00007fff7348feb0
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000004f43d
R13: 00007f72db31bb60 R14: 00007f72db31dd20 R15: 00007fff7348fe64