bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5828/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=8509, q=1320 ncpus=2)
task:syz.2.126       state:R  running task     stack:23808 pid:5828  tgid:5828  ppid:5239   flags:0x00000000
Call Trace:
 <TASK>
 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:xas_start+0x35b/0x7b0 lib/xarray.c:195
Code: 08 4c 89 e7 e8 a6 5f 3e f6 49 8b 2c 24 84 db 74 76 49 8d 5d fe 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 0f 85 c2 03 00 00 0f b6 1b bf 40 00 00 00 89 de e8 8e b0 d4
RSP: 0000:ffffc900158df5a0 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff888148f25600 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00000000000003ff R08: ffffffff8bc00744 R09: 1ffffffff284dcf8
R10: dffffc0000000000 R11: fffffbfff284dcf9 R12: ffffc900158df6a8
R13: ffff888148f25602 R14: ffffc900158df6b8 R15: 1ffff92002b1bed7
 xas_load+0x2c/0x5c0 lib/xarray.c:238
 filemap_get_entry+0x1f0/0x3b0 mm/filemap.c:1842
 __filemap_get_folio+0x71/0xbd0 mm/filemap.c:1887
 filemap_get_folio include/linux/pagemap.h:770 [inline]
 filemap_fault+0x258/0x1950 mm/filemap.c:3318
 __do_fault+0x135/0x460 mm/memory.c:4876
 do_shared_fault mm/memory.c:5346 [inline]
 do_fault mm/memory.c:5420 [inline]
 do_pte_missing mm/memory.c:3965 [inline]
 handle_pte_fault+0x1105/0x6800 mm/memory.c:5751
 __handle_mm_fault mm/memory.c:5894 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6062
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ffa95a5cb46
RSP: 002b:00007ffc22136420 EFLAGS: 00010202
RAX: 0000001b32c20000 RBX: 00007ffa96865720 RCX: 0000001b32820210
RDX: 0000001b32c1fffc RSI: 00000000003ffdf0 RDI: 00007ffa96865700
RBP: 0000000000000000 R08: 00007ffa95d20000 R09: 00007ffa95d22000
R10: 00007ffa96865700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000169
 </TASK>
rcu: rcu_preempt kthread starved for 10539 jiffies! g8509 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:26144 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 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
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.11.0-syzkaller-11503-gc824deb1a897 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826
Code: 2b 00 74 08 4c 89 f7 e8 9a 4f 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:ffffc90000007980 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000000f3c RCX: acce97801d065900
RDX: dffffc0000000000 RSI: ffffffff8c0adbc0 RDI: ffffffff8c6100e0
RBP: ffffc90000007ac8 R08: ffffffff9426e7c7 R09: 1ffffffff284dcf8
R10: dffffc0000000000 R11: fffffbfff284dcf9 R12: 1ffff92000000f38
R13: dffffc0000000000 R14: ffffc900000079e0 R15: 0000000000000246
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb25e4656c0 CR3: 0000000029312000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 process_backlog+0x5dc/0x15b0 net/core/dev.c:6106
 __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
 </IRQ>
 <TASK>
 __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
 </TASK>
net_ratelimit: 20002 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
net_ratelimit: 22613 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:72:27:b0:e5:e9:d8, vlan:0)