rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1):
P5305/1:b..l
P4681/1:b..l
P5322/1:b..l
P2567/2:b..l
rcu: (detected by 1, t=10512 jiffies, g=12293, q=796 ncpus=2)
task:kworker/u8:10 state:R
running task stack:24624 pid:2567 tgid:2567 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 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
__local_bh_enable_ip+0x179/0x200 kernel/softirq.c:389
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]
__dev_queue_xmit+0x1763/0x3e90 net/core/dev.c:4450
neigh_output include/net/neighbour.h:542 [inline]
ip6_finish_output2+0xffa/0x1680 net/ipv6/ip6_output.c:137
ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:222
NF_HOOK+0x9e/0x430 include/linux/netfilter.h:314
mld_sendpack+0x843/0xdb0 net/ipv6/mcast.c:1818
ipv6_mc_dad_complete+0x88/0x490 net/ipv6/mcast.c:2244
addrconf_dad_completed+0x712/0xcd0 net/ipv6/addrconf.c:4340
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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
task:modprobe state:R
running task stack:23680 pid:5322 tgid:5322 ppid:11 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 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:5763
Code: 2b 00 74 08 4c 89 f7 e8 2a f3 8a 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:ffffc90004476d20 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200088edb0 RCX: ae40e30dce0b1500
RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c605cc0
RBP: ffffc90004476e68 R08: ffffffff9372a807 R09: 1ffffffff26e5500
R10: dffffc0000000000 R11: fffffbfff26e5501 R12: 1ffff9200088edac
R13: dffffc0000000000 R14: ffffc90004476d80 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:767
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
fill_pool lib/debugobjects.c:169 [inline]
debug_objects_fill_pool+0x4ad/0x9b0 lib/debugobjects.c:616
debug_object_activate+0x135/0x510 lib/debugobjects.c:705
debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
__call_rcu_common kernel/rcu/tree.c:3091 [inline]
call_rcu+0x97/0xa70 kernel/rcu/tree.c:3210
remove_vma mm/mmap.c:189 [inline]
remove_mt mm/mmap.c:2415 [inline]
do_vmi_align_munmap+0x155c/0x18c0 mm/mmap.c:2758
do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
mmap_region+0x72f/0x2090 mm/mmap.c:2881
do_mmap+0x8f9/0x1010 mm/mmap.c:1468
vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514
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: 0033:0x7fb9c0871b74
RSP: 002b:00007ffd108aa578 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffd108aa628 RCX: 00007fb9c0871b74
RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007fb9c05a0000
RBP: 00007ffd108aa910 R08: 0000000000000000 R09: 0000000000052000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fb9c084e570
R13: 00007ffd108aa998 R14: 0000000000052120 R15: 0000000000000000
task:udevd state:R running task stack:23864 pid:4681 tgid:4681 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 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:instrument_write include/linux/instrumented.h:40 [inline]
RIP: 0010:___set_bit include/asm-generic/bitops/instrumented-non-atomic.h:28 [inline]
RIP: 0010:__update_page_owner_handle mm/page_owner.c:254 [inline]
RIP: 0010:__set_page_owner+0x297/0x800 mm/page_owner.c:325
Code: 46 10 49 83 c6 20 ba 10 00 00 00 4c 89 f7 48 8b 74 24 50 e8 1b 59 aa 09 4c 89 ff be 08 00 00 00 e8 5e 79 f6 ff 49 0f ba 2f 00 <4c> 89 ff be 08 00 00 00 e8 4c 79 f6 ff 49 0f ba 2f 01 48 b8 00 00
RSP: 0018:ffffc900031073a0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffffffff82043922
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888016a43dd0
RBP: ffffc90003107490 R08: ffff888016a43dd7 R09: 1ffff11002d487ba
R10: dffffc0000000000 R11: ffffed1002d487bb R12: 0000000000000001
R13: 0000000000000008 R14: ffff888016a43df8 R15: ffff888016a43dd0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3442
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4700
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2321
allocate_slab+0x5a/0x2f0 mm/slub.c:2484
new_slab mm/slub.c:2537 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
__slab_alloc+0x58/0xa0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_noprof+0x25a/0x400 mm/slub.c:4170
kmalloc_noprof include/linux/slab.h:685 [inline]
tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
security_inode_getattr+0xd8/0x130 security/security.c:2269
vfs_getattr+0x45/0x430 fs/stat.c:204
vfs_fstat fs/stat.c:229 [inline]
vfs_fstatat+0xe4/0x190 fs/stat.c:338
__do_sys_newfstatat fs/stat.c:505 [inline]
__se_sys_newfstatat fs/stat.c:499 [inline]
__x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:499
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: 0033:0x7f0f043165f4
RSP: 002b:00007fffec7dbb68 EFLAGS: 00000202 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000561f3b65c5f0 RCX: 00007f0f043165f4
RDX: 00007fffec7dbb80 RSI: 00007f0f043b3130 RDI: 000000000000000d
RBP: 0000561f3b677b40 R08: 0000000000090800 R09: 0000561f3b64e000
R10: 0000000000001000 R11: 0000000000000202 R12: 00007fffec7dbb80
R13: 00000000000000ff R14: 0000561f132e41c4 R15: 0000000000000000
task:syz.1.2 state:R
running task stack:26000 pid:5305 tgid:5299 ppid:5240 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 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]
zap_pte_range mm/memory.c:1688 [inline]
zap_pmd_range mm/memory.c:1736 [inline]
zap_pud_range mm/memory.c:1765 [inline]
zap_p4d_range mm/memory.c:1786 [inline]
unmap_page_range+0x3818/0x42c0 mm/memory.c:1807
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1897
exit_mmap+0x264/0xc80 mm/mmap.c:3412
__mmput+0x115/0x390 kernel/fork.c:1345
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x27f0 kernel/exit.c:869
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43a19779f9
RSP: 002b:00007f43a27cd0f8 EFLAGS: 00000246
ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f43a1b06060 RCX: 00007f43a19779f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f43a1b06060
RBP: 00007f43a1b06058 R08: 00007f43a27cd6c0 R09: 00007f43a27cd6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43a1b06064
R13: 000000000000006e R14: 00007f43a1c2f950 R15: 00007f43a1c2fa38
rcu: rcu_preempt kthread starved for 10949 jiffies! g12293 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:26128 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 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:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
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-rc1-syzkaller-00272-g17712b7ea075 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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 40 d7 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d e5 33 b4 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: ffff888018280000 RBX: ffff88801b2b6064 RCX: 0000000000051099
RDX: 0000000000000001 RSI: ffff88801b2b6000 RDI: ffff88801b2b6064
RBP: 000000000003a6b8 R08: ffff8880b9337c7b R09: 1ffff11017266f8f
R10: dffffc0000000000 R11: ffffffff8bb5d790 R12: ffff888018b7f000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f0db4e0
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb9c05c3ba8 CR3: 000000002049a000 CR4: 00000000003506f0
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+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
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+0x100/0x100 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147