bridge0: received packet on veth0_to_bridge with own address as source address (addr:6a:ee:a7:64:cb:75, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5856/1:b..l P5223/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=7633, q=1689 ncpus=2)
task:udevd state:R running task stack:23872 pid:5223 tgid:5223 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
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+0x3e3/0x740 arch/x86/kernel/unwind_orc.c:729
Code: 00 81 48 39 c3 40 0f 94 c5 49 8d 5e 35 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 3d 03 00 00 40 88 2b 40 b5 01 49 8d 5e 38 <48> 89 d8 48 c1 e8 03 48 89 44 24 20 80 3c 10 00 74 12 48 89 df e8
RSP: 0018:ffffc900039eeec0 EFLAGS: 00000246
RAX: ffffc900039eef68 RBX: ffffc900039eef58 RCX: ffffc900039eeec0
RDX: dffffc0000000000 RSI: ffffffff8141af28 RDI: ffffc900039eef80
RBP: ffffc900039eef01 R08: ffffc900039eef7f R09: 0000000000000000
R10: ffffc900039eef20 R11: fffff5200073ddf0 R12: ffffc900039eef58
R13: ffffc900039eef48 R14: ffffc900039eef20 R15: 1ffff9200073dde9
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe5/0x150 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+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:1646
d_alloc fs/dcache.c:1726 [inline]
d_alloc_parallel+0xdf/0x1600 fs/dcache.c:2490
__lookup_slow+0x117/0x3f0 fs/namei.c:1776
lookup_slow+0x53/0x70 fs/namei.c:1808
walk_component fs/namei.c:2112 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2477
path_openat+0x266/0x3590 fs/namei.c:3983
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
do_sys_openat2+0x13e/0x1d0 fs/open.c:1398
do_sys_open fs/open.c:1413 [inline]
__do_sys_openat fs/open.c:1429 [inline]
__se_sys_openat fs/open.c:1424 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1424
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: 0033:0x7f6e77b169a4
RSP: 002b:00007fff1a9f02f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f6e77b169a4
RDX: 0000000000080000 RSI: 00007fff1a9f0428 RDI: 00000000ffffff9c
RBP: 00007fff1a9f0428 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 000055ac7dce7b42 R14: 0000000000000001 R15: 0000000000000000
task:syz-executor state:R running task stack:19616 pid:5856 tgid:5856 ppid:5840 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
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:5853
Code: 2b 00 74 08 4c 89 f7 e8 da 25 8f 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:ffffc9000218eca0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000431da0 RCX: ffff888078ab8ad8
RDX: dffffc0000000000 RSI: ffffffff8c2ae4e0 RDI: ffffffff8c820860
RBP: ffffc9000218edf0 R08: ffffffff94546887 R09: 1ffffffff28a8d10
R10: dffffc0000000000 R11: fffffbfff28a8d11 R12: 1ffff92000431d9c
R13: dffffc0000000000 R14: ffffc9000218ed00 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
page_ext_get+0x3d/0x2a0 mm/page_ext.c:525
__reset_page_owner+0x30/0x430 mm/page_owner.c:290
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_noprof+0x135/0x2a0 mm/slub.c:4141
ptlock_alloc+0x20/0x70 mm/memory.c:6918
ptlock_init include/linux/mm.h:2970 [inline]
pagetable_pte_ctor include/linux/mm.h:2997 [inline]
__pte_alloc_one_noprof include/asm-generic/pgalloc.h:73 [inline]
pte_alloc_one+0xd3/0x610 arch/x86/mm/pgtable.c:33
__pte_alloc+0x79/0x3c0 mm/memory.c:448
copy_pte_range mm/memory.c:1108 [inline]
copy_pmd_range+0x7d6d/0x85b0 mm/memory.c:1255
copy_pud_range mm/memory.c:1292 [inline]
copy_p4d_range mm/memory.c:1316 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1414
dup_mmap kernel/fork.c:746 [inline]
dup_mm kernel/fork.c:1675 [inline]
copy_mm+0x1117/0x1e80 kernel/fork.c:1724
copy_process+0x1845/0x3d50 kernel/fork.c:2375
kernel_clone+0x226/0x8f0 kernel/fork.c:2787
__do_sys_clone kernel/fork.c:2930 [inline]
__se_sys_clone kernel/fork.c:2914 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2914
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: 0033:0x7f85a9577053
RSP: 002b:00007ffd942d93d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f85a9577053
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 000055556004a7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000010ddc R14: 0000000000010d4a R15: 00007ffd942d9560
rcu: rcu_preempt kthread starved for 2124 jiffies! g7633 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:25848 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
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: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-syzkaller-05525-g8d5c1b8c3e71 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:preempt_count_add+0x44/0x190 kernel/sched/core.c:5851
Code: 00 00 00 fc ff df 42 0f b6 04 38 84 c0 0f 85 ed 00 00 00 83 3d 8c 76 01 19 00 75 07 65 8b 05 cb 72 a0 7e 65 01 1d c4 72 a0 7e <48> c7 c0 c0 d9 64 9a 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 e4 00
RSP: 0018:ffffc90000156610 EFLAGS: 00000282
RAX: 0000000080000100 RBX: 0000000000000001 RCX: ffffffff9a64d903
RDX: dffffc0000000000 RSI: ffffffff8aa00517 RDI: 0000000000000001
RBP: ffffc90000156738 R08: 0000000000000006 R09: ffffc900001567f0
R10: ffffc90000156750 R11: ffffffff8180c110 R12: dffffc0000000000
R13: ffffc90000156700 R14: ffffffff8aa00517 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5fdb50def8 CR3: 000000002ac36000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0xb0/0x22d0 arch/x86/kernel/unwind_orc.c:479
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
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
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
skb_ext_maybe_cow net/core/skbuff.c:6942 [inline]
skb_ext_add+0x1d6/0x910 net/core/skbuff.c:7016
nf_bridge_unshare net/bridge/br_netfilter_hooks.c:169 [inline]
br_nf_forward_ip+0xd8/0x7b0 net/bridge/br_netfilter_hooks.c:712
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+0x2a7/0x460 include/linux/netfilter.h:312
__br_forward+0x489/0x660 net/bridge/br_forward.c:115
br_handle_frame_finish+0x18ba/0x1fe0 net/bridge/br_input.c:215
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+0x14eb/0x4690 net/core/dev.c:5566
__netif_receive_skb_one_core net/core/dev.c:5670 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5785
process_backlog+0x662/0x15b0 net/core/dev.c:6117
__napi_poll+0xcb/0x490 net/core/dev.c:6877
napi_poll net/core/dev.c:6946 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7068
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:943
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: 26678 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6a:ee:a7:64:cb:75, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6a:ee:a7:64:cb:75, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6a:ee:a7:64:cb:75, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)