rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5335/1:b..l P5218/2:b..l P4900/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=8657, q=1710252 ncpus=2)
task:dhcpcd state:R running task stack:19736 pid:4900 tgid:4900 ppid:4899 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
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:stack_trace_consume_entry+0xe3/0x280 kernel/stacktrace.c:93
Code: 7d 00 4d 89 f0 4c 8b 0c 24 4c 89 ee 48 ba 00 00 00 00 00 fc ff df 48 8b 1b 45 8d 70 01 41 0f b6 04 17 84 c0 0f 85 31 01 00 00 <45> 89 31 4a 8d 1c c3 48 89 d8 48 c1 e8 03 80 3c 10 00 74 1a 4d 89
RSP: 0018:ffffc9000368f5d0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000368f7e0 RCX: ffffffff917b6000
RDX: dffffc0000000000 RSI: ffffffff81f26cf6 RDI: ffffc9000368f70c
RBP: ffffc9000368f708 R08: 0000000000000007 R09: ffffc9000368f710
R10: ffffc9000368f670 R11: ffffffff81806870 R12: 1ffff920006d1ee1
R13: 1ffff920006d1ee1 R14: 0000000000000008 R15: 1ffff920006d1ee2
arch_stack_walk+0x10e/0x150 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
discard_slab mm/slub.c:2678 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3146
put_cpu_partial+0x17c/0x250 mm/slub.c:3221
__slab_free+0x2ea/0x3d0 mm/slub.c:4450
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4086 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
__do_kmalloc_node mm/slub.c:4264 [inline]
__kmalloc_noprof+0x1a6/0x400 mm/slub.c:4277
kmalloc_noprof include/linux/slab.h:882 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
lsm_blob_alloc security/security.c:685 [inline]
lsm_sock_alloc security/security.c:4806 [inline]
security_sk_alloc+0x53/0x360 security/security.c:4822
sk_prot_alloc+0xfa/0x210 net/core/sock.c:2167
sk_alloc+0x38/0x370 net/core/sock.c:2217
unix_create1+0xb4/0x7a0
unix_create+0x14e/0x200 net/unix/af_unix.c:1094
__sock_create+0x490/0x920 net/socket.c:1577
sock_create net/socket.c:1628 [inline]
__sys_socketpair+0x2ca/0x720 net/socket.c:1775
__do_sys_socketpair net/socket.c:1828 [inline]
__se_sys_socketpair net/socket.c:1825 [inline]
__x64_sys_socketpair+0x9b/0xb0 net/socket.c:1825
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: 0033:0x7f906a2e4c0a
RSP: 002b:00007ffd212e12b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 0000557639cb7748 RCX: 00007f906a2e4c0a
RDX: 0000000000000000 RSI: 0000000000080802 RDI: 0000000000000001
RBP: 00007ffd21301728 R08: 00007ffd212e12e0 R09: 0000557639cb7710
R10: 00007ffd212e12e0 R11: 0000000000000246 R12: 00007ffd21301728
R13: 0000557639cb7710 R14: 0000000000000000 R15: 0000557639cb7744
task:syz-executor state:R running task stack:20752 pid:5218 tgid:5218 ppid:5216 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
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 fa 4a 8e 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:ffffc900037af560 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920006f5eb8 RCX: dc109fdde5558800
RDX: dffffc0000000000 RSI: ffffffff8c0adbc0 RDI: ffffffff8c6100a0
RBP: ffffc900037af6b0 R08: ffffffff942687c7 R09: 1ffffffff284d0f8
R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: 1ffff920006f5eb4
R13: dffffc0000000000 R14: ffffc900037af5c0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [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+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
discard_slab mm/slub.c:2678 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3146
put_cpu_partial+0x17c/0x250 mm/slub.c:3221
__slab_free+0x2ea/0x3d0 mm/slub.c:4450
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4086 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
__do_kmalloc_node mm/slub.c:4264 [inline]
__kmalloc_noprof+0x1a6/0x400 mm/slub.c:4277
kmalloc_noprof include/linux/slab.h:882 [inline]
kmalloc_array_noprof include/linux/slab.h:923 [inline]
alloc_pipe_info+0x1ff/0x4d0 fs/pipe.c:815
get_pipe_inode fs/pipe.c:890 [inline]
create_pipe_files+0x87/0x700 fs/pipe.c:922
__do_pipe_flags+0x48/0x2d0 fs/pipe.c:973
do_pipe2+0xd4/0x310 fs/pipe.c:1024
__do_sys_pipe2 fs/pipe.c:1042 [inline]
__se_sys_pipe2 fs/pipe.c:1040 [inline]
__x64_sys_pipe2+0x5a/0x70 fs/pipe.c:1040
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: 0033:0x7f3037d7cc89
RSP: 002b:00007ffeb648bec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000125
RAX: ffffffffffffffda RBX: 000055558d673ad0 RCX: 00007f3037d7cc89
RDX: 000000000007f280 RSI: 0000000000000000 RDI: 00007ffeb648bee0
RBP: 00007ffeb648c480 R08: 0000000000000007 R09: 000055558d6736c0
R10: 5c91017fde128f90 R11: 0000000000000246 R12: 00007ffeb648c2d0
R13: 000055558d673650 R14: 00007ffeb648c010 R15: 000055558d676380
task:syz.1.8 state:R running task stack:19440 pid:5335 tgid:5335 ppid:5250 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
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:__pte_offset_map+0x11c/0x380
Code: 0a 7a aa ff eb 24 e8 03 7a aa ff c6 05 67 4a 1c 0e 01 48 c7 c7 e0 de 15 8c be 53 03 00 00 48 c7 c2 20 df 15 8c e8 24 3c 86 ff <48> 8d 5c 24 40 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef
RSP: 0018:ffffc900043a69c0 EFLAGS: 00000293
RAX: ffffffff81ea3b04 RBX: 0000000000000001 RCX: ffff888025533c00
RDX: 0000000000000000 RSI: ffffffff8c610080 RDI: ffffffff8c610040
RBP: ffffc900043a6a70 R08: ffffffff81ea3af2 R09: 1ffffffff284d0f8
R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: 1ffff92000874d3c
R13: ffff88802c68d368 R14: dffffc0000000000 R15: ffffc900043a6b00
__pte_offset_map_lock+0xc7/0x300 mm/pgtable-generic.c:371
pte_offset_map_lock include/linux/mm.h:3014 [inline]
follow_page_pte+0x129/0x2010 mm/gup.c:846
follow_pmd_mask mm/gup.c:969 [inline]
follow_pud_mask mm/gup.c:1021 [inline]
follow_p4d_mask mm/gup.c:1038 [inline]
follow_page_mask mm/gup.c:1081 [inline]
__get_user_pages+0xb75/0x48d0 mm/gup.c:1483
__get_user_pages_locked mm/gup.c:1751 [inline]
get_dump_page+0x155/0x2f0 mm/gup.c:2269
dump_user_range+0x14c/0x890 fs/coredump.c:1012
elf_core_dump+0x42f3/0x4d00 fs/binfmt_elf.c:2139
do_coredump+0x25f5/0x3470 fs/coredump.c:800
get_signal+0x140e/0x1810 kernel/signal.c:2904
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x79/0x280 kernel/entry/common.c:231
exc_page_fault+0x590/0x8c0 arch/x86/mm/fault.c:1542
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f6c6a37df41
RSP: 002b:0000000000000050 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f6c6a536130 RCX: 00007f6c6a37df39
RDX: 0000000000000000 RSI: 0000000000000050 RDI: 0000000000000000
RBP: 00007f6c6a3f0216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6c6a536130 R15: 00007f6c6a65fa28
rcu: rcu_preempt kthread starved for 9647 jiffies! g8657 f0x2 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:25904 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5285 Comm: kworker/0:7 Not tainted 6.11.0-syzkaller-10622-gaa486552a110 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
RIP: 0010:unwind_next_frame+0xcb1/0x22d0 arch/x86/kernel/unwind_orc.c:585
Code: 0c 00 00 4c 39 f0 0f 87 74 0c 00 00 4c 89 ef e8 a5 22 00 00 49 89 c6 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 30 80 3c 28 00 <48> 8b 5c 24 18 74 08 48 89 df e8 80 30 bd 00 4c 89 33 48 8b 44 24
RSP: 0018:ffffc90000006a30 EFLAGS: 00000246
RAX: 1ffff92000000d69 RBX: ffffc90000006b10 RCX: 1ffff92000000d60
RDX: ffffffff90ae6fd2 RSI: 0000000000000002 RDI: ffffc90000006f38
RBP: dffffc0000000000 R08: 0000000000000009 R09: ffffc90000006bf0
R10: ffffc90000006b50 R11: ffffffff81806870 R12: ffffc90000008000
R13: ffffc90000006f38 R14: ffffffff8988fd31 R15: 1ffff92000000d62
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000c2c0 CR3: 000000000e734000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
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
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:257 [inline]
__do_kmalloc_node mm/slub.c:4265 [inline]
__kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4284
kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:609
__alloc_skb+0x1f3/0x440 net/core/skbuff.c:678
alloc_skb include/linux/skbuff.h:1322 [inline]
synproxy_send_client_synack+0x1ba/0xf30 net/netfilter/nf_synproxy_core.c:460
nft_synproxy_eval_v4+0x3ca/0x610 net/netfilter/nft_synproxy.c:59
nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141
expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288
nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5662 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775
process_backlog+0x662/0x15b0 net/core/dev.c:6107
__napi_poll+0xcb/0x490 net/core/dev.c:6771
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6962
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
nsim_dev_trap_report_work+0x75d/0xaa0 drivers/net/netdevsim/dev.c:850
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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