rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4535/1:b..l
(detected by 0, t=10502 jiffies, g=14497, q=172)
task:syz-executor.0 state:R running task stack:20224 pid: 4535 ppid: 4521 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6552
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6577
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
vprintk_emit+0x146/0x150 kernel/printk/printk.c:2275
_printk+0xd1/0x120 kernel/printk/printk.c:2299
batadv_check_known_mac_addr+0x28a/0x3d0 net/batman-adv/hard-interface.c:522
batadv_hard_if_event+0x300/0x17a0 net/batman-adv/hard-interface.c:986
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
call_netdevice_notifiers net/core/dev.c:2044 [inline]
dev_set_mac_address+0x325/0x470 net/core/dev.c:9074
dev_set_mac_address_user+0x2d/0x50 net/core/dev.c:9088
do_setlink+0x897/0x3ae0 net/core/rtnetlink.c:2696
__rtnl_newlink net/core/rtnetlink.c:3429 [inline]
rtnl_newlink+0x17a4/0x2070 net/core/rtnetlink.c:3549
rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5629
netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2505
netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356
netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
__sys_sendto+0x564/0x720 net/socket.c:2058
__do_sys_sendto net/socket.c:2070 [inline]
__se_sys_sendto net/socket.c:2066 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2066
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4ee3ddfb5c
RSP: 002b:00007fff82ddabb0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f4ee4a34620 RCX: 00007f4ee3ddfb5c
RDX: 000000000000002c RSI: 00007f4ee4a34670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff82ddac04 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f4ee4a34670 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10539 jiffies! g14497 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:26976 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
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: 4690 Comm: syz-executor.3 Not tainted 5.15.154-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_release+0x102/0x9a0 kernel/locking/lockdep.c:5636
Code: 00 83 3d 24 bc 81 0c 00 0f 84 3e 05 00 00 65 8b 05 13 a7 9f 7e 85 c0 0f 85 2f 05 00 00 65 48 8b 05 c3 9d 9f 7e 48 89 44 24 18 <48> 8d 98 ec 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f
RSP: 0018:ffffc90000dd0ce0 EFLAGS: 00000046
RAX: ffff888018d18000 RBX: 0000000000000001 RCX: ffffffff8162d1a8
RDX: 0000000000000000 RSI: ffffffff8ad8f220 RDI: ffffffff8ad8f1e0
RBP: ffffc90000dd0e10 R08: dffffc0000000000 R09: fffffbfff1bc8b4e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001ba1a8
R13: ffffffff816f5b3c R14: ffffc90000dd0e40 R15: dffffc0000000000
FS: 00007f9c9a6516c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c9a650d00 CR3: 000000001d52a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline]
_raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
hrtimer_interrupt+0x53c/0x980 kernel/time/hrtimer.c:1822
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 91 80 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ee c3 3b f7 48 89 df e8 c6 17 3d f7 e8 21 cd 5f f7 fb bf 01 00 00 00 e6 53 30 f7 65 8b 05 97 62 db 75 85 c0 74 02 5b c3 e8 04 81 d9
RSP: 0018:ffffc900023e7bc0 EFLAGS: 00000282
RAX: 3954b1b26dc97200 RBX: ffff8880209f1bc0 RCX: ffffffff913edf03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a00 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8186da70 R09: ffffed100413e379
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021
R13: dffffc0000000000 R14: ffff8880209f2058 R15: ffff8880209f1bc0
spin_unlock_irq include/linux/spinlock.h:413 [inline]
get_signal+0x13ee/0x14e0 kernel/signal.c:2892
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9c9c0dee67
Code: 14 25 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
RSP: 002b:00007f9c9a6510c8 EFLAGS: 00000246
RAX: 0000000000000116 RBX: 00007f9c9c20cf80 RCX: 00007f9c9c0dee69
RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f9c9c12b47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9c9c20cf80 R15: 00007ffc2b0f63b8