rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P2812/1:b..l P5764/1:b..l P5762/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=12457, q=895 ncpus=2)
task:syz-executor.0 state:R running task stack:25616 pid:5762 tgid:5760 ppid:5111 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
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:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x86/0x290 mm/kasan/generic.c:189
Code: 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 <0f> 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc
RSP: 0018:ffffc90014a8f5c8 EFLAGS: 00000246
RAX: ffffffff81411f01 RBX: 1ffff92002951ed0 RCX: ffffffff81411f5e
RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc90014a8f680
RBP: fffffffffffffffe R08: ffffc90014a8f6df R09: 1ffff92002951edb
R10: dffffc0000000000 R11: fffff52002951eda R12: 0000000000000000
R13: ffffffff8181e600 R14: dffffc0000000001 R15: fffff52002951edc
__asan_memset+0x23/0x50 mm/kasan/shadow.c:84
__unwind_start+0x3e/0x7c0 arch/x86/kernel/unwind_orc.c:688
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x75/0x3f0 mm/page_owner.c:302
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1141 [inline]
free_unref_page_prepare+0x986/0xab0 mm/page_alloc.c:2347
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487
vfree+0x186/0x2e0 mm/vmalloc.c:3340
lzo_free+0x65/0x80 fs/squashfs/lzo_wrapper.c:59
squashfs_decompressor_destroy+0x9e/0xc0 fs/squashfs/decompressor_single.c:57
squashfs_fill_super+0x930/0x21f0 fs/squashfs/super.c:472
get_tree_bdev+0x3f9/0x570 fs/super.c:1614
vfs_get_tree+0x92/0x2a0 fs/super.c:1779
do_new_mount+0x2be/0xb40 fs/namespace.c:3352
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f418ea7e5ea
RSP: 002b:00007f418f7fcef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f418f7fcf80 RCX: 00007f418ea7e5ea
RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 00007f418f7fcf40
RBP: 00000000200001c0 R08: 00007f418f7fcf80 R09: 0000000000200048
R10: 0000000000200048 R11: 0000000000000202 R12: 0000000020000040
R13: 00007f418f7fcf40 R14: 000000000000019e R15: 00000000200000c0
task:syz-executor.5 state:X running task stack:25744 pid:5764 tgid:5761 ppid:0 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
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:__unwind_start+0x2c7/0x7c0 arch/x86/kernel/unwind_orc.c:714
Code: 04 24 00 00 00 00 e9 8e 01 00 00 e8 03 10 55 00 49 8d 6e 48 4d 8d 66 38 48 8d 15 00 00 00 00 48 89 e1 48 89 e8 48 89 4c 24 08 <48> 89 04 24 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc90014a7f4b8 EFLAGS: 00000293
RAX: ffffc90014a7f568 RBX: ffff888025c48000 RCX: ffffc90014a7f4b8
RDX: ffffffff814121dc RSI: 0000000000000000 RDI: ffffc90014a7f580
RBP: ffffc90014a7f568 R08: ffffc90014a7f57f R09: ffffc90014a7f520
R10: dffffc0000000000 R11: fffff5200294feb0 R12: ffffc90014a7f558
R13: ffffc90014a7f548 R14: ffffc90014a7f520 R15: 1ffff9200294fea9
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x75/0x3f0 mm/page_owner.c:302
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1141 [inline]
free_unref_page_prepare+0x986/0xab0 mm/page_alloc.c:2347
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487
__folio_put_large+0x168/0x1d0 mm/swap.c:132
__folio_put+0x299/0x390 mm/swap.c:140
folio_put include/linux/mm.h:1508 [inline]
put_page include/linux/mm.h:1580 [inline]
do_exit+0x1cd8/0x27e0 kernel/exit.c:916
do_group_exit+0x207/0x2c0 kernel/exit.c:1026
get_signal+0x16a1/0x1740 kernel/signal.c:2911
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+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f118767cee9
RSP: 002b:00007f11883d2178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f11877abf88 RCX: 00007f118767cee9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f11877abf88
RBP: 00007f11877abf80 R08: 00007f11883d26c0 R09: 00007f11883d26c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11877abf8c
R13: 000000000000000b R14: 00007fff2f3e8af0 R15: 00007fff2f3e8bd8
task:kworker/u8:7 state:R running task stack:23128 pid:2812 tgid:2812 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
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:5758
Code: 2b 00 74 08 4c 89 f7 e8 7a f7 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:ffffc900097379e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920012e6f48 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcac740 RDI: ffffffff8c1fae20
RBP: ffffc90009737b40 R08: ffffffff92f9c587 R09: 1ffffffff25f38b0
R10: dffffc0000000000 R11: fffffbfff25f38b1 R12: 1ffff920012e6f44
R13: dffffc0000000000 R14: ffffc90009737a40 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread starved for 10616 jiffies! g12457 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:26320 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-syzkaller-08544-g4b377b4868ef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d3 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 45 fd a0 00 f3 0f 1e fa fb f4 e9 44 04 28 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246
RAX: ffffffff8e0946c0 RBX: ffff888017afe064 RCX: 0000000000045d59
RDX: 0000000000000001 RSI: ffff888017afe000 RDI: ffff888017afe064
RBP: 000000000003a438 R08: ffff8880b9437d0b R09: 1ffff11017286fa1
R10: dffffc0000000000 R11: ffffffff8b883870 R12: ffff88801bb49000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eac6be0
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c1a219f00 CR3: 0000000076ec2000 CR4: 0000000000350ef0
Call Trace:
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x114/0x480 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:236 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:332
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
rest_init+0x2dc/0x300 init/main.c:742
start_kernel+0x47a/0x500 init/main.c:1084
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147