rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5842/1:b..l P12861/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=33601, q=424535 ncpus=2)
task:syz.3.2100 state:R running task stack:23808 pid:12861 tgid:12861 ppid:5844 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6693
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7015
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:__nr_to_section include/linux/mmzone.h:1881 [inline]
RIP: 0010:__pfn_to_section include/linux/mmzone.h:1989 [inline]
RIP: 0010:lookup_page_ext mm/page_ext.c:251 [inline]
RIP: 0010:page_ext_get+0x138/0x2a0 mm/page_ext.c:526
Code: 43 9a e8 fb 25 f3 ff 48 8b 05 24 c8 37 18 48 85 c0 74 41 4c 89 e1 48 c1 e9 16 48 8d 1c c8 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 ce 25 f3 ff 48 8b 1b 48 85 db 74 1f 4c 89 e5 48
RSP: 0018:ffffc90017cd7448 EFLAGS: 00000246
RAX: 1ffff11047ffdea8 RBX: ffff88823ffef540 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000017fe200 RDI: 000000ffffffffc0
RBP: 000000ffffffffc0 R08: ffffffff820ba04e R09: 1ffffffff285a100
R10: dffffc0000000000 R11: fffffbfff285a101 R12: 000000000005ff88
R13: 0000000000000002 R14: ffffffff820b9f80 R15: dffffc0000000000
__page_table_check_zero+0xb1/0x350 mm/page_table_check.c:148
page_table_check_free include/linux/page_table_check.h:41 [inline]
free_pages_prepare mm/page_alloc.c:1128 [inline]
free_unref_page+0xe0e/0x1140 mm/page_alloc.c:2657
discard_slab mm/slub.c:2677 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3145
put_cpu_partial+0x17c/0x250 mm/slub.c:3220
__slab_free+0x2ea/0x3d0 mm/slub.c:4449
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:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
vm_area_dup+0x27/0x290 kernel/fork.c:488
__split_vma+0x1cb/0xc50 mm/vma.c:383
split_vma mm/vma.c:459 [inline]
vma_modify+0x153a/0x1a80 mm/vma.c:1437
vma_modify_flags+0x3a5/0x430 mm/vma.c:1455
mprotect_fixup+0x45a/0xaa0 mm/mprotect.c:664
do_mprotect_pkey+0x8d7/0xd70 mm/mprotect.c:838
__do_sys_mprotect mm/mprotect.c:859 [inline]
__se_sys_mprotect mm/mprotect.c:856 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:856
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: 0033:0x7f2a5137e7d7
RSP: 002b:00007ffdcf4c7c98 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f2a5209a6c0 RCX: 00007f2a5137e7d7
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f2a5207b000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffdcf4c7df0
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
task:syz-executor state:R running task stack:20912 pid:5842 tgid:5842 ppid:5831 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6693
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7015
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+0x137/0x280 kernel/stacktrace.c:95
Code: ee 4c 89 f2 48 89 33 41 8b 19 41 0f b6 04 14 84 c0 0f 85 34 01 00 00 3b 5d 00 0f 92 c0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 44 89 c9 80 e1 07 80 c1 03 38 c1 0f 8c e9 fe ff
RSP: 0018:ffffc90003e976b0 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffffc90003e976c0 RCX: ffffffff917be000
RDX: dffffc0000000000 RSI: ffffffff81fed75a RDI: ffffc90003e977ac
RBP: ffffc90003e977a8 R08: 0000000000000004 R09: ffffc90003e977b0
R10: ffffc90003e97710 R11: ffffffff8180a270 R12: ffff8880281a1e00
R13: ffffffff8180a270 R14: ffffc90003e977a0 R15: 0000000000000000
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:1127 [inline]
free_unref_page+0xdf9/0x1140 mm/page_alloc.c:2657
discard_slab mm/slub.c:2677 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3145
put_cpu_partial+0x17c/0x250 mm/slub.c:3220
__slab_free+0x2ea/0x3d0 mm/slub.c:4449
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:4085 [inline]
slab_alloc_node mm/slub.c:4134 [inline]
kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4153
__d_alloc+0x31/0x700 fs/dcache.c:1636
d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1768
alloc_path_pseudo fs/file_table.c:337 [inline]
alloc_file_pseudo+0x123/0x290 fs/file_table.c:353
sock_alloc_file+0xb8/0x280 net/socket.c:468
sock_map_fd net/socket.c:493 [inline]
__sys_socket+0x1dd/0x3c0 net/socket.c:1725
__do_sys_socket net/socket.c:1730 [inline]
__se_sys_socket net/socket.c:1728 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1728
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: 0033:0x7f8a1b580637
RSP: 002b:00007fff34ad31f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8a1b580637
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007fff34ad391c R08: 00007fff34ad324c R09: 00007fff34ad3637
R10: 00007fff34ad32a0 R11: 0000000000000206 R12: 00007f8a1b709e40
R13: 0000000000033878 R14: 0000000000033724 R15: 00007f8a1b70c000
rcu: rcu_preempt kthread starved for 4092 jiffies! g33601 f0x2 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:25784 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6693
__schedule_loop kernel/sched/core.c:6770 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6785
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00127-gea301aec8bb7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:jhash2 include/linux/jhash.h:127 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:514 [inline]
RIP: 0010:stack_depot_save_flags+0x6d/0x830 lib/stackdepot.c:614
Code: 00 89 6c 24 10 89 5c 24 04 43 8d 34 09 46 8d 34 cd 7b 71 f5 75 83 fe 04 72 75 44 89 f3 44 89 f0 4c 8b 44 24 08 4c 89 c2 03 02 <03> 5a 04 44 03 72 08 44 89 f7 c1 c7 04 44 29 f0 31 c7 41 01 de 29
RSP: 0018:ffffc900001e6700 EFLAGS: 00000287
RAX: 00000000d4ac8e9f RBX: 000000001edf0a72 RCX: 000000001c7670be
RDX: ffffc900001e676c RSI: 0000000000000031 RDI: 0000000050b23fe4
RBP: 000000005ab10bcf R08: ffffc900001e6760 R09: 000000000000001a
R10: ffffc900001e6630 R11: ffffffff8180a270 R12: ffff888141edf3dc
R13: ffffea0006b3f940 R14: 00000000bf51cd9a R15: ffffc900001e6760
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeba87e9cc CR3: 000000006b632000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x51/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2342 [inline]
slab_free mm/slub.c:4579 [inline]
kmem_cache_free+0x1a2/0x420 mm/slub.c:4681
skb_release_all net/core/skbuff.c:1188 [inline]
__kfree_skb net/core/skbuff.c:1204 [inline]
sk_skb_reason_drop+0x194/0x380 net/core/skbuff.c:1242
ip6_rcv_core+0xdbe/0x15f0
ipv6_rcv+0x71/0xc0 net/ipv6/ip6_input.c:306
__netif_receive_skb_one_core net/core/dev.c:5670 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783
netif_receive_skb_internal net/core/dev.c:5869 [inline]
netif_receive_skb+0x1e8/0x890 net/core/dev.c:5928
NF_HOOK+0x9e/0x400 include/linux/netfilter.h:314
br_handle_frame_finish+0x18ed/0x1fe0
br_nf_hook_thresh+0x472/0x590
br_nf_pre_routing_finish_ipv6+0xaa0/0xdd0
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x379/0x770 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424
__netif_receive_skb_core+0x13e8/0x4570 net/core/dev.c:5564
__netif_receive_skb_one_core net/core/dev.c:5668 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5783
process_backlog+0x662/0x15b0 net/core/dev.c:6115
__napi_poll+0xcb/0x490 net/core/dev.c:6779
napi_poll net/core/dev.c:6848 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6970
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
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
net_ratelimit: 8073 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
net_ratelimit: 7923 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:c3:a8:72:f7, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)