rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P28611/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=149605, q=73 ncpus=2)
task:kworker/u4:49 state:R running task stack:27112 pid:28611 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6981
irqentry_exit+0x35/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:rcu_is_watching+0x5/0xb0 kernel/rcu/tree.c:691
Code: 00 00 00 00 00 f3 0f 1e fa 48 c7 c7 80 ee 4d 8a e8 b0 29 a3 08 65 8a 05 25 3d 97 7e 0f b6 c0 c3 0f 1f 44 00 00 f3 0f 1e fa 55 <53> 65 ff 05 ab 22 97 7e e8 6e 29 a3 08 48 c7 c3 e8 6c 03 00 83 f8
RSP: 0018:ffffc90004cf7b88 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff888076b7df58 RCX: 0000000000000000
RDX: ffff8880a1ba4040 RSI: ffffffff89d5ddde RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000094001 R12: ffff88802108c0a4
R13: dffffc0000000000 R14: ffff88801ef94c80 R15: 00000000000003eb
rcu_read_lock include/linux/rcupdate.h:774 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
batadv_iv_ogm_schedule_buff+0xaf3/0x1520 net/batman-adv/bat_iv_ogm.c:825
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x333/0x960 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2408
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2555
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: rcu_preempt kthread starved for 10498 jiffies! g149605 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:28056 pid:15 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 29970 Comm: syz-executor.5 Not tainted 6.4.0-rc7-syzkaller-00226-ga92b7d26c743 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:csd_lock_wait kernel/smp.c:285 [inline]
RIP: 0010:smp_call_function_many_cond+0x67f/0x15a0 kernel/smp.c:828
Code: 89 ee e8 d4 3f 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 93 43 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 ad 0c 00 00 8b 43 08 31
RSP: 0018:ffffc90003b0f450 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffffe8ffffc0b360 RCX: ffffc9002ae0c000
RDX: 0000000000040000 RSI: ffffffff817827ad RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: fffff91ffff8166d
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
FS: 00007f8ab8786700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 00000000aa81a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:996
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1770 [inline]
text_poke_bp_batch+0x237/0x770 arch/x86/kernel/alternative.c:1970
text_poke_flush arch/x86/kernel/alternative.c:2161 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2158 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:829
static_key_slow_inc_cpuslocked kernel/jump_label.c:165 [inline]
static_key_slow_inc_cpuslocked+0xe5/0x1a0 kernel/jump_label.c:148
static_key_slow_inc+0x1b/0x30 kernel/jump_label.c:186
fl_create+0x9c5/0xd10 net/ipv6/ip6_flowlabel.c:458
ipv6_flowlabel_get net/ipv6/ip6_flowlabel.c:639 [inline]
ipv6_flowlabel_opt+0x9e6/0x2ff0 net/ipv6/ip6_flowlabel.c:742
do_ipv6_setsockopt+0x3e3/0x4ac0 net/ipv6/ipv6_sockglue.c:936
ipv6_setsockopt+0xdf/0x190 net/ipv6/ipv6_sockglue.c:1012
tcp_setsockopt+0x9f/0x100 net/ipv4/tcp.c:3804
__sys_setsockopt+0x2c6/0x5b0 net/socket.c:2273
__do_sys_setsockopt net/socket.c:2284 [inline]
__se_sys_setsockopt net/socket.c:2281 [inline]
__x64_sys_setsockopt+0xbe/0x160 net/socket.c:2281
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8ab7a8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ab8786168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f8ab7babf80 RCX: 00007f8ab7a8c389
RDX: 0000000000000020 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 00007f8ab7ad7493 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6ec0429f R14: 00007f8ab8786300 R15: 0000000000022000