net_ratelimit: 14 callbacks suppressed
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4977/1:b..l.. P19784/1:b..l.. P20183/1:b..l..
rcu: (detected by 0, t=10502 jiffies, g=617201, q=913 ncpus=1)
task:syz-executor state:R running task stack:21640 pid:20183 tgid:20183 ppid:20180 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7385
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7665
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:524 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__read_once_word_nocheck+0x0/0x10 include/asm-generic/rwonce.h:67
Code: 89 e7 e8 03 c1 c5 00 e9 1e fd ff ff 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 07 c3 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90
RSP: 0018:ffffc90003c6ec78 EFLAGS: 00000202
RAX: ffffc90003c6f501 RBX: 1ffff9200078dda6 RCX: 1ffff9200078dd01
RDX: ffffc90003c6f558 RSI: 0000000000000002 RDI: ffffc90003c6f558
RBP: 1ffffffff24c60c8 R08: ffffc90003c6f560 R09: 0000000000000000
R10: ffffc90003c6ed78 R11: ffffffff81b35c60 R12: 1ffff9200078dda7
R13: ffffc90003c70000 R14: ffffc90003c6ed28 R15: ffffc90003c68000
deref_stack_reg arch/x86/kernel/unwind_orc.c:422 [inline]
unwind_next_frame+0xca5/0x2550 arch/x86/kernel/unwind_orc.c:614
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:1401 [inline]
__free_frozen_pages+0xc97/0xd90 mm/page_alloc.c:2952
__slab_free+0x269/0x2c0 mm/slub.c:5926
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
kmem_cache_alloc_noprof+0x2b4/0x600 mm/slub.c:5047
ptlock_alloc+0x20/0x70 mm/memory.c:7768
ptlock_init include/linux/mm.h:4024 [inline]
pagetable_pte_ctor include/linux/mm.h:4093 [inline]
__pte_alloc_one_noprof include/asm-generic/pgalloc.h:79 [inline]
pte_alloc_one+0x7a/0x3d0 arch/x86/mm/pgtable.c:18
__pte_alloc+0x25/0x1a0 mm/memory.c:453
copy_pte_range mm/memory.c:1298 [inline]
copy_pmd_range+0x5395/0x5c00 mm/memory.c:1453
copy_pud_range mm/memory.c:1490 [inline]
copy_p4d_range mm/memory.c:1514 [inline]
copy_page_range+0xcc2/0x12b0 mm/memory.c:1600
dup_mmap+0xf17/0x1dc0 mm/mmap.c:1819
dup_mm kernel/fork.c:1542 [inline]
copy_mm+0x115/0x470 kernel/fork.c:1594
copy_process+0x1ea5/0x4460 kernel/fork.c:2310
kernel_clone+0x2d7/0x940 kernel/fork.c:2774
__do_sys_clone kernel/fork.c:2916 [inline]
__se_sys_clone kernel/fork.c:2900 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2900
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7f047c6d52
RSP: 002b:00007ffcbe656670 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffcbe656670 RCX: 00007f7f047c6d52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffcbe6567fc R08: 0000000000000000 R09: 0000000000000001
R10: 0000555583e227d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000017e05a R15: 00007ffcbe656850
task:syz-executor state:R running task stack:21640 pid:19784 tgid:19784 ppid:19775 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7385
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7665
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:524 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0xd04/0x2550 arch/x86/kernel/unwind_orc.c:-1
Code: 38 4c 8b 6c 24 18 74 08 48 89 df e8 16 e5 c5 00 48 8b 04 24 48 89 03 ba 10 00 00 00 49 8d 5e 50 48 89 df 31 f6 e8 dc e6 c5 00 <48> 8b 54 24 08 e9 c7 04 00 00 48 89 5c 24 48 49 8d 7e 08 48 89 fb
RSP: 0018:ffffc90004b9f4c0 EFLAGS: 00000246
RAX: ffffc90004b9f5b8 RBX: ffffc90004b9f5b8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90004b9f5c8
RBP: 1ffffffff24cb492 R08: ffffc90004b9f5c7 R09: 0000000000000000
R10: ffffc90004b9f5b8 R11: fffff52000973eb9 R12: dffffc0000000000
R13: ffffffff9265a492 R14: ffffc90004b9f568 R15: ffffc90004b9f5b0
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:1401 [inline]
__free_frozen_pages+0xc97/0xd90 mm/page_alloc.c:2952
__slab_free+0x269/0x2c0 mm/slub.c:5926
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
kmem_cache_alloc_noprof+0x2b4/0x600 mm/slub.c:5047
lsm_file_alloc security/security.c:172 [inline]
security_file_alloc+0x34/0x310 security/security.c:2453
init_file+0x90/0x2b0 fs/file_table.c:185
alloc_empty_file+0x74/0x1d0 fs/file_table.c:267
path_openat+0x96/0x20f0 fs/namei.c:5044
do_file_open+0x258/0x570 fs/namei.c:5087
do_sys_openat2+0x115/0x200 fs/open.c:1442
do_sys_open fs/open.c:1448 [inline]
__do_sys_openat fs/open.c:1788 [inline]
__se_sys_openat fs/open.c:1783 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1783
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb936d5eb0e
RSP: 002b:00007ffe5e4036b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555588060500 RCX: 00007fb936d5eb0e
RDX: 0000000000000001 RSI: 00007ffe5e403800 RDI: ffffffffffffff9c
RBP: 00007ffe5e4037ac R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000181
R13: 0000555588073a00 R14: 000000000017e7d0 R15: 00007ffe5e403800
task:udevd state:R running task stack:21640 pid:4977 tgid:4977 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7385
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7665
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:524 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x2e1/0x3c0 kernel/locking/lockdep.c:5968
Code: c2 3d 13 00 00 00 00 eb b5 e8 5b 20 62 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 c3 7a 3d 13 48 3b 44 24 28 75 48 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 68 24 1c
RSP: 0018:ffffc90002f1f1c8 EFLAGS: 00000282
RAX: f67d29ea8471f100 RBX: 0000000000000206 RCX: 0000000000000046
RDX: ffffc90002f1f201 RSI: ffffffff8ea31f14 RDI: ffffffff8c8f9b80
RBP: ffff88807e2869c0 R08: ffffc90002f1fb10 R09: 0000000000000000
R10: ffffc90002f1f2f8 R11: fffff520005e3e61 R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff90159f60 R15: ffff88807e285dc0
rcu_lock_release include/linux/rcupdate.h:319 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
class_rcu_destructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0x1baa/0x2550 arch/x86/kernel/unwind_orc.c:709
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:1401 [inline]
__free_frozen_pages+0xc97/0xd90 mm/page_alloc.c:2952
__slab_free+0x269/0x2c0 mm/slub.c:5926
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:417
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5531 [inline]
__kmalloc_noprof+0x366/0x710 mm/slub.c:5556
_kmalloc_noprof include/linux/slab.h:995 [inline]
_kzalloc_noprof include/linux/slab.h:1312 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x2ad/0x570 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x5fa/0x640 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
security_inode_getattr+0x12b/0x310 security/security.c:1942
vfs_getattr+0x23/0x70 fs/stat.c:263
vfs_statx_path+0x2b/0x230 fs/stat.c:303
vfs_statx+0x12e/0x200 fs/stat.c:360
vfs_fstatat+0x11b/0x170 fs/stat.c:377
__do_sys_newfstatat fs/stat.c:542 [inline]
__se_sys_newfstatat+0x118/0x3a0 fs/stat.c:536
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a9b311b0a
RSP: 002b:00007fff6c3ac518 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055c5974fb408 RCX: 00007f6a9b311b0a
RDX: 00007fff6c3ac520 RSI: 000055c5974e9ef3 RDI: 00000000ffffff9c
RBP: 000055c5c84d7198 R08: 00063489548db180 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff6c3ac520 R14: 0000000000000000 R15: 00063489548db180
rcu: rcu_preempt kthread starved for 391 jiffies! g617201 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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7385
__schedule_loop kernel/sched/core.c:7462 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7477
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: 3227 Comm: kworker/R-bat_e Tainted: G L Y syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP, [Y]=FORCED_BIND
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 f0 52 62 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 52 ad 3d 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 87 53 1c
RSP: 0018:ffffc90000006f20 EFLAGS: 00000292
RAX: 1e2db571ca284c00 RBX: 0000000000000000 RCX: 8000000000000101
RDX: 00000000071bee9f RSI: ffffffff8ea31f14 RDI: ffffffff8c8f9b80
RBP: ffff8880338c1f40 R08: ffffffff8178899f R09: 0000000000000000
R10: ffffc90000007058 R11: ffffffff81b35c60 R12: ffffffff90159f60
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff888123408000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558807ba38 CR3: 000000000ff48000 CR4: 00000000003526f0
DR0: 0000000000000009 DR1: 00000000000000c9 DR2: 00000000000000f3
DR3: 00000000000000c0 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:264 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2780 [inline]
slab_free mm/slub.c:6630 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6757
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_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
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:6335 [inline]
__netif_receive_skb net/core/dev.c:6448 [inline]
process_backlog+0xa6b/0x18b0 net/core/dev.c:6799
__napi_poll+0xaa/0x330 net/core/dev.c:7868
napi_poll net/core/dev.c:7931 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8088
handle_softirqs+0x223/0x840 kernel/softirq.c:645
do_softirq+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
spin_unlock_bh include/linux/spinlock.h:407 [inline]
batadv_tt_local_purge+0x277/0x300 net/batman-adv/translation-table.c:1798
batadv_tt_purge+0x35/0xa40 net/batman-adv/translation-table.c:4269
process_one_work kernel/workqueue.c:3495 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
rescuer_thread+0x84a/0x12a0 kernel/workqueue.c:3803
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