rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8713/1:b..l P8411/1:b..l P5230/1:b..l P4677/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=35997, q=634 ncpus=2)
task:udevd state:R running task stack:21664 pid:4677 tgid:4677 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
fast_dput+0x1e1/0x420
dput+0xe8/0x2b0 fs/dcache.c:851
step_into+0x355/0x1080 fs/namei.c:1906
walk_component fs/namei.c:2059 [inline]
link_path_walk+0x7b7/0xea0 fs/namei.c:2418
path_openat+0x266/0x3590 fs/namei.c:3929
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_openat fs/open.c:1446 [inline]
__se_sys_openat fs/open.c:1441 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8cdcd9f9a4
RSP: 002b:00007ffdb799f5c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8cdcd9f9a4
RDX: 0000000000080141 RSI: 00005584befa80d8 RDI: 00000000ffffff9c
RBP: 00005584befa80d8 R08: 00000000ffffffff R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141
R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff
task:syz-executor state:R running task stack:20888 pid:5230 tgid:5230 ppid:5217 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1191 [inline]
copy_pmd_range+0x7ad5/0x8500 mm/memory.c:1252
copy_pud_range mm/memory.c:1289 [inline]
copy_p4d_range mm/memory.c:1313 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1411
dup_mmap kernel/fork.c:749 [inline]
dup_mm kernel/fork.c:1672 [inline]
copy_mm+0x11e2/0x1f30 kernel/fork.c:1721
copy_process+0x1854/0x3d80 kernel/fork.c:2373
kernel_clone+0x223/0x880 kernel/fork.c:2780
__do_sys_clone kernel/fork.c:2923 [inline]
__se_sys_clone kernel/fork.c:2907 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2907
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4dfd174753
RSP: 002b:00007ffc9a010928 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4dfd174753
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555824ae7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000525a3 R14: 0000000000052434 R15: 00007ffc9a010ab0
task:syz-executor state:R running task stack:20208 pid:8411 tgid:8411 ppid:8400 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
vprintk_emit+0x84c/0xa10 kernel/printk/printk.c:2408
_printk+0xd5/0x120 kernel/printk/printk.c:2432
batadv_check_known_mac_addr+0x2b1/0x410 net/batman-adv/hard-interface.c:526
batadv_hard_if_event+0x3a5/0x1620 net/batman-adv/hard-interface.c:998
notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
call_netdevice_notifiers net/core/dev.c:2048 [inline]
dev_set_mac_address+0x3d9/0x510 net/core/dev.c:9100
dev_set_mac_address_user+0x31/0x50 net/core/dev.c:9114
do_setlink+0x8b6/0x41f0 net/core/rtnetlink.c:2855
__rtnl_newlink net/core/rtnetlink.c:3696 [inline]
rtnl_newlink+0x180d/0x20a0 net/core/rtnetlink.c:3743
rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6646
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x398/0x4f0 net/socket.c:2210
__do_sys_sendto net/socket.c:2222 [inline]
__se_sys_sendto net/socket.c:2218 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2218
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f212117fd8c
RSP: 002b:00007ffd228da300 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f2121e64620 RCX: 00007f212117fd8c
RDX: 000000000000002c RSI: 00007f2121e64670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffd228da354 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f2121e64670 R15: 0000000000000000
task:rm state:R running task stack:24992 pid:8713 tgid:8713 ppid:8686 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826
Code: 2b 00 74 08 4c 89 f7 e8 0a 56 88 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003ca7ce0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000794fa8 RCX: af2fd8a314874800
RDX: dffffc0000000000 RSI: ffffffff8c0aea80 RDI: ffffffff8c5fea80
RBP: ffffc90003ca7e28 R08: ffffffff94211887 R09: 1ffffffff2842310
R10: dffffc0000000000 R11: fffffbfff2842311 R12: 1ffff92000794fa4
R13: dffffc0000000000 R14: ffffc90003ca7d40 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
__fget_files+0x4a/0x470 fs/file.c:1031
ksys_mmap_pgoff+0x23b/0x720 mm/mmap.c:1485
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f20451bcb74
RSP: 002b:00007ffef5bc10a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffef5bc1120 RCX: 00007f20451bcb74
RDX: 0000000000000001 RSI: 0000000000028000 RDI: 00007f204516d000
RBP: 00007ffef5bc1410 R08: 0000000000000003 R09: 0000000000097000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f20451990c0
R13: 00007ffef5bc1498 R14: 0000000000096066 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10628 jiffies! g35997 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:25552 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-syzkaller-05319-g4a39ac5b7d62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d6 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 25 f9 b3 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff88801d6f8000 RBX: ffff8881412e7864 RCX: 0000000000daa599
RDX: 0000000000000001 RSI: ffff8881412e7800 RDI: ffff8881412e7864
RBP: 000000000003a878 R08: ffff8880b8937e9b R09: 1ffff11017126fd3
R10: dffffc0000000000 R11: ffffffff8bb5ac70 R12: ffff8881482e9000
R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f10b6a0
FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c28f8cf CR3: 0000000062fb0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:264
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147