net_ratelimit: 755 callbacks suppressed
net_ratelimit: 379 callbacks suppressed
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13148/1:b..l.. P12863/1:b..l..
rcu: (detected by 0, t=10502 jiffies, g=131029, q=678 ncpus=1)
task:syz.1.1205 state:R running task stack:22376 pid:12863 tgid:12859 ppid:9671 task_flags:0x40054c flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:422 [inline]
RIP: 0010:unwind_next_frame+0xca5/0x2550 arch/x86/kernel/unwind_orc.c:614
Code: 3c 01 0f 85 90 0e 00 00 48 8d 42 08 48 39 d8 0f 97 c1 4c 39 f8 0f 96 c0 20 c8 3c 01 0f 85 76 0e 00 00 48 89 d7 e8 eb 23 00 00 <48> 89 c3 49 bc 00 00 00 00 00 fc ff df 48 8b 44 24 20 42 80 3c 20
RSP: 0018:ffffc90003b7f480 EFLAGS: 00000202
RAX: ffffffff8257278f RBX: 1ffff9200076fea6 RCX: 1ffff9200076fe01
RDX: ffffc90003b7f9b8 RSI: 0000000000000002 RDI: ffffc90003b7f9b8
RBP: 1ffffffff24cfe9f R08: ffffc90003b7f9c0 R09: 0000000000000000
R10: ffffc90003b7f578 R11: ffffffff81b3c670 R12: 1ffff9200076fea7
R13: ffffc90003b80000 R14: ffffc90003b7f528 R15: ffffc90003b78000
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:183
__reset_page_owner+0x73/0x2a0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1416 [inline]
free_pages_prepare+0x9eb/0xaf0 mm/page_alloc.c:1461
__free_contig_range_common+0x174/0x340 mm/page_alloc.c:7137
__free_contig_range mm/page_alloc.c:7182 [inline]
free_pages_bulk+0x48/0x120 mm/page_alloc.c:5390
vm_area_free_pages mm/vmalloc.c:3511 [inline]
vfree+0x22c/0x490 mm/vmalloc.c:3560
kcov_put kernel/kcov.c:469 [inline]
kcov_close+0x28/0x50 kernel/kcov.c:574
__fput+0x408/0xa40 fs/file_table.c:513
fput_close_sync+0x11f/0x240 fs/file_table.c:619
filp_close_sync+0x6e/0xa0 fs/open.c:1898
close_files fs/file.c:572 [inline]
put_files_struct+0x230/0x3c0 fs/file.c:584
do_exit+0x6f0/0x2360 kernel/exit.c:977
do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
get_signal+0x136a/0x1430 kernel/signal.c:3113
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
do_syscall_64+0x32c/0x530 arch/x86/entry/syscall_64.c:107
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x00007faff699fb19
RSP: 002b:00007faff7898028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 000000000000001c RBX: 00007faff6c26270 RCX: 00007faff699fb19
RDX: 0000000000000080 RSI: 0000200000001540 RDI: 0000000000000005
RBP: 00007faff6a37b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faff6c26308 R14: 00007faff6c26270 R15: 00007ffd1cd4ada8
task:syz-executor state:R running task stack:23240 pid:13148 tgid:13148 ppid:5627 task_flags:0x40050c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:98 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:115 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:140 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:172 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:191 [inline]
RIP: 0010:kasan_check_range+0x97/0x2c0 mm/kasan/generic.c:200
Code: 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 3d 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 <0f> 85 9e 01 00 00 49 ff c3 48 ff c3 75 ee e9 1d 01 00 00 44 89 dd
RSP: 0018:ffffc9000357eca8 EFLAGS: 00000246
RAX: ffffc9000357fc01 RBX: ffffffffffffffff RCX: ffffffff81789654
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc9000357edf8
RBP: 0000000000000000 R08: ffffc9000357ee07 R09: 1ffff920006afdc0
R10: dffffc0000000000 R11: fffff520006afdc0 R12: 0000000000000002
R13: ffffffff925852cc R14: fffff520006afdc1 R15: 1ffff920006afdbf
__asan_memset+0x22/0x50 mm/kasan/shadow.c:84
unwind_next_frame+0xd04/0x2550 arch/x86/kernel/unwind_orc.c:621
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:183
__set_page_owner+0x8d/0x4c0 mm/page_owner.c:359
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1874
prep_new_page+0x22/0xb0 mm/page_alloc.c:1882
get_page_from_freelist+0x22a1/0x22e0 mm/page_alloc.c:3964
__alloc_frozen_pages_noprof+0x211/0x450 mm/page_alloc.c:5506
alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2520
alloc_frozen_pages_noprof mm/mempolicy.c:2591 [inline]
alloc_pages_noprof+0xb1/0x2b0 mm/mempolicy.c:2611
get_free_pages_noprof+0xf/0x80 mm/page_alloc.c:5582
tlb_remove_table+0x5b/0x8f0 mm/mmu_gather.c:374
__pte_free_tlb arch/x86/include/asm/pgalloc.h:58 [inline]
free_pte_range mm/memory.c:181 [inline]
free_pmd_range mm/memory.c:199 [inline]
free_pud_range mm/memory.c:233 [inline]
free_p4d_range mm/memory.c:267 [inline]
free_pgd_range+0x8bb/0x13c0 mm/memory.c:356
free_pgtables+0x956/0xb70 mm/memory.c:419
exit_mmap+0x4aa/0xa40 mm/mmap.c:1327
__mmput+0x118/0x420 kernel/fork.c:1194
exit_mm+0x18e/0x240 kernel/exit.c:586
do_exit+0x6a8/0x2360 kernel/exit.c:967
do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
get_signal+0x136a/0x1430 kernel/signal.c:3113
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
do_syscall_64+0x32c/0x530 arch/x86/entry/syscall_64.c:107
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x00007f7dce95ac97
RSP: 002b:00007fff81b3a910 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000555558fe0500 RCX: 00007f7dce95ac97
RDX: 0000000040000000 RSI: 00007fff81b3a96c RDI: ffffffffffffffff
RBP: 00007fff81b3a96c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007fff81b3abc8 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 609 jiffies! g131029 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:27400 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
__schedule_loop kernel/sched/core.c:7459 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7474
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 3234 Comm: kworker/R-bat_e Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 90 36 67 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 32 c0 3e 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 cf 49 6a 0a cc 48 8d 3d 27 4f 1d
RSP: 0018:ffffc90000006f60 EFLAGS: 00000296
RAX: 8a76a3c52f002500 RBX: 0000000000000000 RCX: 8000000000000101
RDX: 00000000071bee9f RSI: ffffffff8e93c1df RDI: ffffffff8c8eba80
RBP: ffff8880303d8000 R08: ffffffff817889df R09: 0000000000000000
R10: ffffc90000007098 R11: ffffffff81b3c670 R12: ffffffff9015a560
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff8881233f0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dbedb58008 CR3: 000000000ff48000 CR4: 00000000003526f0
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3f/0x90 mm/kasan/common.c:79
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:599
poison_slab_object mm/kasan/common.c:267 [inline]
__kasan_slab_free+0x70/0x90 mm/kasan/common.c:299
kasan_slab_free include/linux/kasan.h:239 [inline]
slab_free_hook mm/slub.c:2778 [inline]
slab_free mm/slub.c:6613 [inline]
kmem_cache_free+0x184/0x660 mm/slub.c:6740
nft_synproxy_eval_v4+0x36a/0x4e0 net/netfilter/nft_synproxy.c:-1
nft_synproxy_do_eval+0x389/0x5d0 net/netfilter/nft_synproxy.c:142
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_do_chain_ipv4+0x195/0x290 net/netfilter/nft_chain_filter.c:24
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:323
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6437 [inline]
__netif_receive_skb net/core/dev.c:6550 [inline]
process_backlog+0xa6b/0x18b0 net/core/dev.c:6901
__napi_poll+0xaa/0x330 net/core/dev.c:7987
napi_poll net/core/dev.c:8050 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8207
handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
do_softirq+0x77/0xd0 kernel/softirq.c:569
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
spin_unlock_bh include/linux/spinlock.h:407 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2930 [inline]
batadv_tt_purge+0x4ee/0xa40 net/batman-adv/translation-table.c:4333
process_one_work kernel/workqueue.c:3505 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3588
rescuer_thread+0x84a/0x12a0 kernel/workqueue.c:3813
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245