bridge0: received packet on veth1_to_bridge with own address as source address (addr:66:e7:99:f4:e7:ff, vlan:12)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:66:e7:99:f4:e7:ff, vlan:12)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P17724/1:b..l
rcu: (detected by 1, t=10528 jiffies, g=92697, q=2011 ncpus=2)
task:syz.3.2769 state:R running task stack:24648 pid:17724 tgid:17724 ppid:5614 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
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: d7 f1 11 00 00 00 00 eb b5 e8 5b d7 41 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 b3 92 f1 11 48 3b 44 24 28 75 48 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 d0 db 44 0a cc 48 8d 3d a8 10 da
RSP: 0018:ffffc900033c7128 EFLAGS: 00000286
RAX: c82460d20d07b200 RBX: 0000000000000206 RCX: 0000000000000046
RDX: ffffc900033c7201 RSI: ffffffff8e6fe025 RDI: ffffffff8c6d9c80
RBP: ffff88802f762b40 R08: ffffc900033c76f0 R09: 0000000000000000
R10: ffffc900033c7258 R11: fffff52000678e4d R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff8ed5c8a0 R15: ffff88802f761f40
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+0x71/0x1f0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__slab_free+0x274/0x2c0 mm/slub.c:5815
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:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4683 [inline]
slab_alloc_node mm/slub.c:4996 [inline]
kmem_cache_alloc_noprof+0x2b9/0x600 mm/slub.c:5010
vm_area_dup+0x28/0x760 mm/vma_init.c:128
__split_vma+0x1d7/0xa60 mm/vma.c:560
split_vma mm/vma.c:643 [inline]
vma_modify+0x887/0x1f40 mm/vma.c:1771
vma_modify_flags+0x2a4/0x3c0 mm/vma.c:1799
mprotect_fixup+0x51a/0xad0 mm/mprotect.c:824
do_mprotect_pkey+0x8e7/0xd10 mm/mprotect.c:1002
__do_sys_mprotect mm/mprotect.c:1023 [inline]
__se_sys_mprotect mm/mprotect.c:1020 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1020
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: 0033:0x7f398139df57
RSP: 002b:00007ffdefcf9068 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f398224c6c0 RCX: 00007f398139df57
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f398222d000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffdefcf91c0
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 2348 jiffies! g92697 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:5526 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7368
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7009 Comm: kworker/u8:12 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:220 [inline]
RIP: 0010:unwind_next_frame+0x1bc/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: c2 a0 c5 09 8c 48 29 dd 0f 84 b5 02 00 00 48 81 fd 00 00 00 81 0f 92 c0 48 81 fd 20 28 e9 8b 0f 93 c1 08 c1 0f 85 0b 01 00 00 <48> c7 c0 00 00 00 81 49 89 ef 49 29 c7 49 c1 ef 08 8b 15 1d 9a fc
RSP: 0018:ffffc90000007420 EFLAGS: 00000246
RAX: 1ffff92000000e00 RBX: 0000000000000001 RCX: 8000000000000100
RDX: ffffffff8c09c5a0 RSI: ffffffff8c6d9c60 RDI: ffffffff8c6d9c20
RBP: ffffffff81331039 R08: ffffffff8177f1df R09: 0000000000000000
R10: ffffc90000007518 R11: ffffffff81b285f0 R12: dffffc0000000000
R13: ffffffff8177f1df R14: ffffc900000074c8 R15: ffffc90000007510
FS: 0000000000000000(0000) GS:ffff888124cd1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564658d96d08 CR3: 0000000022b0a000 CR4: 00000000003526f0
Call Trace:
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
unpoison_slab_object mm/kasan/common.c:340 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4683 [inline]
slab_alloc_node mm/slub.c:4996 [inline]
kmem_cache_alloc_node_noprof+0x354/0x610 mm/slub.c:5068
kmalloc_reserve net/core/skbuff.c:615 [inline]
pskb_expand_head+0x1d8/0x13a0 net/core/skbuff.c:2315
__skb_cow include/linux/skbuff.h:3909 [inline]
skb_cow include/linux/skbuff.h:3928 [inline]
skb_reorder_vlan_header net/core/skbuff.c:6321 [inline]
skb_vlan_untag+0x477/0xdd0 net/core/skbuff.c:6366
__netif_receive_skb_core+0x3d4/0x30c0 net/core/dev.c:6085
__netif_receive_skb_one_core net/core/dev.c:6262 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6728
__napi_poll+0xaa/0x330 net/core/dev.c:7787
napi_poll net/core/dev.c:7850 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8007
handle_softirqs+0x226/0x860 kernel/softirq.c:645
do_softirq+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
local_bh_enable include/linux/bottom_half.h:33 [inline]
__alloc_skb+0x1b1/0x7a0 net/core/skbuff.c:699
alloc_skb include/linux/skbuff.h:1384 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:744 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:801 [inline]
nsim_dev_trap_report_work+0x25f/0xb40 drivers/net/netdevsim/dev.c:847
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
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